CN101874520B - Fermented milk beverage containing red date particles and preparation method thereof - Google Patents
Fermented milk beverage containing red date particles and preparation method thereof Download PDFInfo
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- CN101874520B CN101874520B CN200910237714A CN200910237714A CN101874520B CN 101874520 B CN101874520 B CN 101874520B CN 200910237714 A CN200910237714 A CN 200910237714A CN 200910237714 A CN200910237714 A CN 200910237714A CN 101874520 B CN101874520 B CN 101874520B
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Abstract
The invention relates to the field of liquid milk, in particular to a fermented milk beverage containing red date particles and a preparation method thereof. The milk beverage comprises the following components in percentage by weight: 24 to 80 percent of milk, 0.0025 to 0.005 percent of lactic acid bacteria baking agent, 0.25 to 1 percent of stabilizer, 1 to 20 percent of red date particles, 0.1 to 0.4 percent of acidity regulator and the balance of water, wherein the stabilizer consists of a thickener and/or an emulsifier, and the thickener contains 0.1 to 0.15 weight percent of high acyl gellan gum. The milk beverage containing the red date particles ensures that the red date particles can more completely, uniformly and stably suspend in milk for long time while the nutrition of yogurt, the flavor of the red date and the chewing sense of the red date particles are effectively combined, and enables consumers to truly feel the real existence of the red date particles in taste and vision of the product.
Description
Technical field
The present invention relates to field of liquid milk, particularly, the present invention relates to a kind of leben that contains red date particles and preparation method thereof.
Background technology
Milk is nutritious, advantages of easy digesting absorbs, inexpensive, instant, is the most approaching perfectly food, be called as " white blood ", and be one of optimal wholefood.Comprises amounts of protein in the milk, be mainly casein, albumin, globulin, lactoprotein etc., comprise 8 seed amino acids of needed by human in the 20 contained several amino acids, and milk proem matter is complete protein that digestibility is up to 98%.
The bacterial classification of using in fermented type milk-contained drink and the sour milk beverage production has lactobacillus bulgaricus, streptococcus thermophilus and Bifidobacterium etc.; They can both glucose fermentation, fructose, galactolipin and lactose; Generate lactic acid and a spot of other materials respectively; These variations have not only improved the former nutritious of milk, and have given beverage special local flavor.
Fermented type milk-contained drink and sour milk beverage are a kind of food with good health care; Its health-care effect mainly contains: regulate gastrointestinal bacterial flora, improve body immune system, suppress tumour; Improve the dysbolism of lactose intolerance; Reduce cholesterol levels, suppress vivotoxin, delay body aging.Especially to producing the lactose intolerance person of symptoms such as borborygmus, stomachache, diarrhoea behind the drink milk, producing fermented type milk-contained drink and the required sour milk of sour milk beverage is good milk protein source, can relievedly drink.
Red date is a kind of nutrient excellent product, is described as " kings of all kinds of fruits ".Red date contains the necessary kind vitamin of human bodies such as abundant vitamin A, B, C and 18 seed amino acids, mineral matter; Wherein the content of vitamin C (ascorbic acid) is finished 70-80 times up to grape, apple; The road is also very high in the content of (citrin), and these two kinds of vitamins all have certain effect to anti-cancer and prophylaxis of hypertension, high fat of blood.
Put down in writing according to Huangdi's Internal Classics, Compendium of Material Medica: jujube has the effect that beneficial gas is supported kidney, blood-enriching face-nourishing, tonifying liver step-down, soothing nerves, tonifying yang, controlled the consumptive disease damage.Abundant CAMP, the catechuic acid of content has unique anti-cancer step-down effect in the red date, so red date is splendid tonic food.
If with fermented type milk-contained drink or sour milk beverage and red date mixed edible; Can be through the complementation of food; Make amino acid whose kind of food protein and quantity more near the physiological requirements of human body; Therefore, no matter the combination of fermented type milk-contained drink or sour milk beverage and red date is said or is said from the research and development of milk beverage from nutrition, all be a kind of way that is highly profitable.
The product of red date is various in the market; Wherein the product that combines with red date of liquid milk is also more; But this series products is through adding the fragrance that jujube juice and red date essence reach red date mostly; Can't accomplish when experiencing red date fragrance, can chew again the true mouthfeel of red date pulp, also can't accomplish numerous health-care efficacies that fermented type milk-contained drink and sour milk beverage bring.
The suspension stability problem of red date particles is the key issue that the puzzlement suspending beverage is produced always. the settlement polar earth effect of red date particles the presentation quality of product.There are some researches show, add stabilizing agents such as CMC, pectin and can suppress caseic gathering.But this can not solve the suspension problem of red date particles.The dairy products of more existing in the market interpolation red date particles; Though received liking of consumer; But this type dairy products will take place to be added in shelf life red date particles has all sunk to the bottom of the packing of product; Cause the consumer not shaking up with strength under the situation of product; What can occur when drinking product just having begun to drink is that liquid just can drink the unjoyful sensation of red date particles gradually, even the situation that liquid in the product can not drink red date particles can occur finishing off, because red date particles all has been bonded at the bottom of packing.
Milk product is of a great variety at present, but the production technology of product is basic identical, in essence no significant difference.Production technology mainly comprises the steps:
1, former milk check: to organoleptic indicator, acidity, fat, protein, real milk solids, mingle, several indexs such as alcohol experiment detect, and meet relevant national standards;
2, batching:
After a, thickener or emulsifying agent fully dissolve, squeeze into after the cooling in the material-compound tank, fully mix with milk (or cultured milk);
If b produces acidic milk drink, carry out the dissolving of tart flavour conditioning agent, white granulated sugar or sweetener: fully in the online adding cow's milk in dissolving back or among the spray adding a, stir fast, fully mix with cow's milk (or cultured milk);
C, interpolation nutrient: as adding nutrient or fruit juice or other auxiliary materials, nutrient or auxiliary material are fully dissolved among the back adding a, fully mix with product.
3, constant volume: replenish into remaining water;
4, temporary: or add flavor substance;
5, sterilization: adopt pasteurize or UHT disinfection system, mainly may further comprise the steps: preheating → homogeneous → sterilization → cooling.
A, disinfection equipment mainly adopt heat-exchangers of the plate type or bushing type sterilization;
B, homogeneous: generally adopt 18～25MPa, temperature is 60～70 ℃; Mainly be to smash fat, and carry out emulsification and dispersion.
6, can;
7, packing, check are dispatched from the factory after qualified.
The dairy products of existing interpolation red date particles are in the process of producing, and also there are a lot of problems in technology.The dairy products that this type adds red date particles just added red date particles before above-mentioned steps 3, disinfection equipment adopts the bushing type sterilization.Even can cause red date particles in material-compound tank, under the condition that the rotation of stirring is arranged, still can not guarantee the amount basically identical of each position of red date particles in material-compound tank like this; Final in finished product each packaging unit all can not guarantee the content basically identical of red date particles; Have have more lack; And stir bigger to the mechanical damage of red date particles; The shape size of red date particles also can be destroyed; So the also big amount of the red date particles content that on batching the time will add than virtual package unit, indicates has so not only been wasted raw material but also has been caused the difference between the finished product with the red date particles content that the content that guarantees red date particles in each packaging unit indicates on all more than or equal to packaging unit.In addition; It is irreversible operation that red date particles mixes before sterilization with the milk liquid base material; With respect to red date particles and milk liquid base material sterilization respectively, also be the technology that is unfavorable for production management the such production technology of can respectively, in case because workman's maloperation and something unexpected happened such as power failure can cause inevitable waste.
Summary of the invention
In order to address the above problem, inventor of the present invention proposes and accomplishes the present invention.
Main purpose of the present invention is to provide a kind of leben that contains red date particles; When the fragrance of the nutrition of sour milk, red date and red date particles chewiness are effectively tied platform; And red date particles can be more intactly, even stable suspension in milk for a long time, can make the consumer in the product mouthfeel with visually really feel the necessary being of red date particles.
A purpose more of the present invention provides above-mentioned leben that contains red date particles of preparation and preparation method thereof.
According to the leben that contains red date particles of the present invention, based on the said leben of 100wt%, its prescription is:
Milk 24～80wt%;
Lactic acid bacteria fermenting agent 0.0025～0.005wt%;
Stabilizing agent 0.25～1wt%;
Red date particles 1～20wt%;
Acidity regulator 0.1～0.4wt%;
Water surplus,
Wherein, said stabilizing agent is made up of thickener and/or emulsifying agent, and its said thickener comprises the high acyl gellan gum of 0.1～0.15wt%.
But gellan gum is the exploitation of U.S. Si Bikai company, and another can being widely used in the industry after xanthans is a kind of Microbial exopolysaccharides that utilizes microorganism under aerobic conditions, to synthesize.After gellan gum is water-soluble, can assemble forming the bifilar helix structure between the molecule automatically, the further gathering of double helix can form tridimensional network, so the particulate matter that can suspend.At present, the commercial goods gellan gum mainly contains two kinds of high acyl gellan gum and low-acyl gellan gums, but because both different structures cause the difference on rheology and the functional characteristic.Inventor of the present invention is through reading up the literature and test for a long time; Find low-acyl gellan gum since unprotected side chain group or side-chain radical seldom; Big, the easy embrittlement of formed gel strength is not suitable for being used in and plays suspension effect in the beverage, and is bigger to the stability influence of product.And through moving sphingolipid monad fermentation back less without the high acyl gellan gum of deacylated tRNA base processing gained; Gel has good stable property, and acidproof, anti-enzyme is even all very stable under autoclaving and baking condition; Also very stable and best in acid product in pH value performance under 4.0～7.5 conditions; High acyl gellan gum still can have the netted gelinite in good space under the external force shear action of less variation receiving, and still can play suspension, stabilization well, has good anti-shear ability.Simultaneously, this gellan gum has very high viscosity at low shear rate and when static, therefore has good transport performance and shelf stabilities.What high acyl gellan gum formed is soft, elastic gel, and gel is rich in juice, has good local flavor release property, and the mouthfeel of just melt in the mouth is arranged.
Inventor of the present invention is used in high acyl gellan gum and can forms weak gel structure in the beverage thereby can under extremely low consumption, obtain good suspension effect; Find that through long experiment the high acyl gellan gum consumption is 1.2 ‰ when above; The red date particles of the most of kind that can add in the beverage products, size can even stable suspension; And its quality, stability do not receive time and Influence of Temperature when storage, and effect is very good.
Employed milk mainly is meant the fresh milk or the reconstituted milk of answering Fu Tai China fresh cow's milk acquisition criteria GB6914 in the leben that contains red date particles provided by the invention, can be whole milk, also can be skim milk or lowfat milk.Getting the part sour milk after milk ferments through lactic acid bacteria fermenting agent joins in the middle of the fermented type milk-contained drink or sour milk beverage production that contains red date particles.According to milk-contained drink national standard GB 21732-2008; Sour milk content in product is 30～80wt%; Be commonly referred to the fermented type milk-contained drink; Whether divide into sterilization (non-viable bacteria) type and not sterilization (viable bacteria) type, content of milk protein>=1.0wt% in the fermented type milk-contained drink finished product physical and chemical index according to it through sterilization processing; Sour milk content in product is 24～80wt%, is commonly referred to sour milk beverage, whether divides into sterilization (non-viable bacteria) type and not sterilization (viable bacteria) type, content of milk protein>=0.7wt% in the sour milk beverage finished product physical and chemical index through sterilization processing according to it; The viable lactic acid bacteria number of not sterilization (viable bacteria) type not sterilization of fermented type milk-contained drink (viable bacteria) type sour milk beverage answers>=1 * 10 in the phase of dispatching from the factory
6CFU/ml should carry out by the viable lactic acid bacteria number of Product labelling mark at selling period.
In containing the milk beverage of particle, the long-term evenly suspension stability of particle is one of critical nature of estimating product.Red date particles can evenly be suspended in the product for a long time among the present invention, mainly is because the less and preferred stabilizing agent of density of red date particles itself.Result according to concrete test experiments shows; In the milk beverage of the present invention; The viscosity of milk liquid between 15～70 centipoises, is preferably 20～40 centipoises usually, and the distribution of red date particles in milk liquid is more uniform; The overwhelming majority is even suspended state, in actual industrial production, can realize the even can of red date particles at each packing unit; And product of the present invention can be preserved at normal temperatures, and whole liquid milk system all is more stablely phenomenons such as serious fat floating, albumen precipitation, suction grumeleuse can not occur uniformly in reaching 6 months shelf life, has good stable property.
According to leben of the present invention; Wherein, Said thickener also comprises to be selected from and comprises in sodium carboxymethylcellulose, locust bean gum, gelatin, agar, Arabic gum, guar gum, xanthans, the carragheen one or more, but these thickener actings in conjunction realize the stability of product.
According to leben of the present invention; Wherein, Said emulsifying agent is to be selected from the group that comprises glycerin monostearate, bi-tristearin, polyglycerol ester, sucrose ester, stearoyl lactate, citric acid monoglyceride, tartaric acid monoglyceride, butanedioic acid monoglyceride, acetate monoglyceride, propylene glycol alginate, junket wine acid sodium one or more, and the content of said emulsifying agent is 0.5～1.5wt ‰.
According to leben of the present invention, wherein, said acidity regulator can be selected from one or more of lactic acid, citric acid and malic acid.
According to leben of the present invention; Wherein, said lactic acid bacteria fermenting agent comprises lactobacillus bulgaricus Lactobacillus bulgaricus, streptococcus thermophilus Streptococcus thermophilus, lactobacillus acidophilus Lactobacillus.acidophilus, Bifidobacterium Bifidobacterium, Lactobacillus casei Lactobacillys case for being selected from) and the lactobacillus Lactobacillus GG of sandlwood Tang in one or more.
In the milk beverage that contains red date particles of the present invention; The red date particles that is contained can be that rule or irregular particle shape also can be fibrous; Can be that to be packaged in the aseptic packaging unit that contains the saccharic acid aqueous solution also can be natural air drying or through the dehydration red date particles (be preferably the employing vacuum freeze drying, can keep the nutritional labeling in the red date to greatest extent) after vacuum freeze drying or the heated-air drying.It is rule or irregular particle shape red date particles or the pulp class red date particles of about 1-10mm that red date particles is preferably selected particle diameter for use, and perhaps length is about 2-10mm, and width is the fibrous red date particles of about 1-5mm, perhaps its combination.When adding these red date particles, can adopt the red date product that has processed or the preparation voluntarily that are purchased, its addition serves as to calculate benchmark with the amount of red date particles.
In the milk beverage that contains red date particles of the present invention; Also selectivity is added with as required: one or more in dietary fiber, composite nutrient, jujube juice, sweet substance (carbohydrate or sweetener), flavoring essence, salt or other flavoring substance or the additive etc.; To give the abundant more nutrition of product or further to improve product special flavour, increase the kind of product.The selection of these materials and addition can be confirmed for a person skilled in the art according to actual needs.
The milk beverage that contains red date particles provided by the invention specifically is meant fermented type milk-contained drink or the sour milk beverage that contains red date particles; The sour milk and the red date particles that wherein contain special ratios; The nutrition of sour milk and the chewiness of red date particles are effectively combined; Red date particles in the product can evenly suspend again to distribute and exist simultaneously; And the consumer can be from mouthfeel in process of consumption and visually really feel and the necessary being of red date particles can obtain the health-care efficacy that sour milk brings again, thereby brings genuine goods at a fair price and, joyful and healthy sensation to the consumer.
On the other hand, the present invention also provides said two kinds of preparation methods that contain the leben of red date particles.
A kind of method for preparing said leben according to the present invention may further comprise the steps:
1) preparation sour milk, with the sterilization of milk homogeneous, aseptic then interpolation lactic acid bacteria fermenting agent fermentation,
A) homogeneous: the milk that standardization is good carries out homogeneous, and homogenizing temperature is that 70～75 ℃, pressure are 200bar (transfer secondary to make Pressure gauge be designated as 50bar earlier, transfer one-level to make Pressure gauge be designated as 200bar again);
B) sterilization: 95 ℃/300s of sterilization of milk technology or 110～121 ℃/4～12s or be heated to 90～95 ℃, and insulation 120min with recombined milk;
C) fermentation: whether the raw material milk after the sterilization is cooled to 25～44 ℃ rapidly, squeezes in the fermentation tank, it is stable to measure the raw material milk temperature; When treating that the raw material milk temperature stabilization is in the temperature range that fermentation requires, the required lactic acid bacteria fermenting agent of aseptic interpolation; Slowly stirring stops after 10-15 minute stirring, and begins fermentation; Fermentation time and fermentation termination are looked selected lactic acid bacteria fermenting agent and are confirmed that fermentation time was generally 3.5～72 hours, preferred rapid lactic acid bacterium leavening agent fermentation time 4.5～5.5 hours, fermentation termination: pH value about 4.3,120～130 ° of T of titratable acidity; When using fermented yoghourt immediately; Earlier the cultured milk is cooled to≤20 ℃ (require whole jar of cultured milk in 40 minutes, to reduce to and require temperature) rapidly; Homogeneous (earlier secondary pressure is transferred to 50bar, adjust the first class pressure handle again and make gross pressure reach 150bar) is squeezed into material-compound tank then; When producing fermented yoghourt for use, can the cultured milk behind the homogeneous be cooled to≤4 ℃ of stored for future use (resting period must not above 24 hours) rapidly, please stir before reusing.
2) preparation base-material, the steady dissolution agent mixes with sour milk then, adds the acidity regulator acid adjustment, stirring, homogeneous then, 65～70 ℃ of homogenizing temperatures, homogenization pressure 200～250bar (can transfer secondary to make Pressure gauge be designated as 50bar earlier; Transfer one-level to make Pressure gauge be designated as 200～250bar) again; Behind the homogeneous, according to the formula for a product needs, also can add additive kind raw materials such as composite nutrient, sweetener and/or flavoring essence, obtain base-material, pipeline is produced in input.
3) add red date particles; In having the compensating cylinder of stirring, add the red date particles feed liquid; Utilize displacement pump that proportionally on-line mixing of pipeline and base-material is produced in red date particles feed liquid input, obtain mixed liquor, wherein the system pressure of the base-material behind the pressure of displacement pump and the homogeneous is consistent.
4) mixed liquor sterilization; And
5) with the mixed liquor can after the sterilization, above-mentioned mixed liquor is transported to the tubular type sterilization machine carries out 2～30s under 115～121 ℃ sterilization through displacement pump with mixed liquor; The concrete parameter of sterilization processing is confirmed according to concrete equipment, as preferred scheme, can control the about 121 ℃/4s of sterilization parameter, obtains leben.
Carry out the sterilization of 121 ℃/4s after can selectively stabilizing agent fully being dissolved according to the method for the invention earlier in water, cool to after the sterilization below 45 ℃, obtain stabilizing agent syrup base-material; The back mixes with fermented yoghourt; The red date particles feed liquid for preparing through 100～142 ℃ of tubular type sterilization machines, 2～30s sterilization, is obtained the red date particles feed liquid of commercial sterilization, and the concrete parameter of sterilization processing is confirmed according to concrete equipment; As preferred scheme, the sterilization parameter is 105 ℃/30s; Cooling back is online adds to and promptly obtains not sterilization (viable bacteria) type fermented type milk-contained drink or sour milk beverage in mixing without the direct cold-aseptic filling of sterilization machine to packaging unit with base-material in the base-material.
According to the method for the invention, can be according to the production pipeline of the different choice different tube diameters of red date particles particle diameter, so that base-material and red date particles feed liquid on-line mixing successfully.
Wherein when adding red date particles; Can the red date particles input be had in the compensating cylinder of stirring; Add a certain amount of water and be made into the red date particles feed liquid, in the red date particles feed liquid input compensating cylinder that perhaps directly will be purchased, configure firm discharge through aseptic process; The red date particles feed liquid is transported to produces in the pipeline, with base-material on-line mixing proportionally.When the solid content of used red date particles feed liquid is higher, possibly be unfavorable for that direct pumping gets into the production pipeline, therefore, can the red date particles feed liquid be added suitable quantity of water and dilute, be beneficial to pumping.Preferably, the red date particles content in the red date particles feed liquid for preparing preferably is controlled in the 50-90wt.% scope, and preferable range is 50-65wt.%, and this red date particles feed liquid can be got into the production pipeline by smooth pumping mixes with base-material, guarantees to produce and carries out continuously.For employed red date particles feed liquid,, before sending into production line, suitably adjust or handle according to the parameter request of online interpolation equipment in wherein granule content, viscosity of sludge and the production.
According to the method for the invention, for the shape and the uniform state of red date particles in compensating cylinder that guarantee red date particles, the rotating speed of the mixer in the compensating cylinder may be controlled to about 30～80rpm.
According to the method for the invention, preferably, the employing displacement pump is sent into the red date particles feed pump and is produced in the pipeline, and the system pressure basically identical of the pressure of displacement pump and the base-material behind the homogeneous, can keep the integrality of red date particles in the feed liquid to greatest extent.Said displacement pump can be screw pump, gear pump or membrane pump.The inventive method is particularly useful for producing the milk beverage of red date particles content at 1-20wt.%.
Wherein, after the on-line mixing that the present invention adopted (the online interpolation of red date particles in other words) was meant that base-material and red date particles feed liquid get into the production pipeline, the different inlet from triple valve got into triple valve realization mixing respectively, obtains mixed liquor sterilization again.In the on-line mixing process, according to the difference of the content of red date particles in final the milk beverage that will obtain, the flow of control base-material and red date particles; The flow of red date particles also with the red date particles feed liquid in granule content relevant.For example; Use red date particles content in the red date particles feed liquid about 65%, and require finished product red date particles content to reach 5% at least, calculate according to one ton of product; Need the about 50Kg of pure red date particles; Being converted to the red date particles feed liquid just needs 77Kg, and the residue base-material is 923Kg, and flow proportional is exactly 923: 77 so.During online interpolation red date particles, can control the flow proportional of base-material and red date particles, flow can be monitored through flowmeter.Production process was engaged togather well before and after operation can make like this, formed the production of serialization, and guaranteed that red date particles feed liquid and base-material mix better, and in the milk beverage that can obtains, red date particles can suspend uniformly and stably; In actual production, also can the base-material behind the homogeneous be kept at earlier in the buffer tank, when needs, import the production pipeline again and mix with the red date particles feed liquid.
According to the method for the invention, after base-material and the red date particles feed liquid on-line mixing, can handle, directly get into sterilization machine and carry out sterilization processing without other; Base-material and red date particles feed liquid are mixed the back and are got into before the sterilization machine; Also can be introduced into a static mixer further mixes; The red date particles feed liquid is mixed with base-material better, make in the milk beverage of final acquisition, red date particles can suspend uniformly and stably.
According to the method for the invention, in order to guarantee the accurate quantitative filling of red date particles, the feed liquid can that mixes red date particles adopts suitable granule filling machine to carry out can separately.For guaranteeing the canned smoothly of red date particles in the product, the granule filling machine that should select to have suitable caliber fill head, preferably, the fill head caliber of granule filling machine be the red date particles particle diameter 2-5 doubly.For example, the fill head of employing 10mm caliber is come the red date particles of can 4 * 4 * 4mm.
According to the method for the invention; The feed liquid can adopts the mixed liquor will mix red date particles to be cooled to about 90 ℃, generally is 85～90 ℃, hot filling or be cooled to cryogenic sterile below 30 ℃ and be filled to packaging unit (flexible package body for example; Gather and mould bottle/jar etc.) in, milk beverage obtained.Wherein, preferably use hot filling during other feed liquids of can (like base-material).The packaging unit that is suitable for milk beverage of the present invention preferably includes: PET, HDPE, Tetra Pak, Kang Meibao etc.
The production method that contains the milk beverage of red date particles provided by the present invention has realized base-material and the real on-line mixing of red date particles feed liquid; Need not carry out mechanical agitation in process of production to red date particles feed liquid or the mixed liquor that contains red date particles; Can avoid red date particles is caused mechanical damage, reduce the percentage of damage of red date particles.
In the production method of the milk beverage that contains red date particles provided by the invention; Need not keep in perhaps buffer memory to red date particles feed liquid or the mixed liquor that contains red date particles; Need be to the mixed liquor that obtains after red date particles and the base-material mixing is not stirred yet; Can reduce the destruction of mechanical agitation to red date particles, the shape size of protection red date particles is not destroyed, and reduces the percentage of damage of red date particles; In the milk beverage that obtains in accordance with the present production process, the percentage of damage of red date particles generally can both remain on below 5.0%.
The method that another kind according to the present invention prepares leben may further comprise the steps:
1) preparation sour milk, with the sterilization of milk homogeneous, aseptic then interpolation lactic acid bacteria fermenting agent fermentation, the preparation sour milk is with first kind of production method;
2) preparation red date particles feed liquid adds red date particles in the red date particles material-compound tank, adds required water, slowly stirs to make red date particles in water, be homogeneously dispersed state;
3) preparation base-material, stabilizing agent fully mixes with required sour milk after the dissolving in water, adds the acidity regulator acid adjustment; Add excess water, stir, carry out homogeneous then; 65～70 ℃ of homogenizing temperatures, homogenization pressure 200～250bar (can transfer secondary to make Pressure gauge be designated as 50bar earlier; Transfer one-level to make Pressure gauge be designated as 200～250bar) again; Behind the homogeneous, according to the formula for a product needs, also can add additive kind raw materials such as composite nutrient, sweetener and/or flavoring essence, obtain base-material, pipeline is produced in input;
4) sterilization; The red date particles feed liquid for preparing through 100～142 ℃ of tubular type sterilization machines, 2～30s sterilization, is obtained the red date particles feed liquid of commercial sterilization, and the concrete parameter of sterilization processing is confirmed according to concrete equipment; As preferred scheme, the sterilization parameter is 105 ℃/30s; Base-material is delivered to sterilization machine, 115～121 ℃, 2～30s sterilization, the concrete parameter of sterilization processing confirms that according to concrete equipment as preferred scheme, the sterilization parameter is 121 ℃/4s;
5) feed liquid can, the red date particles feed liquid after the first can sterilization, the base-material after the can sterilization obtains leben then;
6) the upset packaging unit makes red date particles and base-material mixing.
According to the method for the invention; Carry out the sterilization of 121 ℃/4s after can selectively stabilizing agent fully being dissolved earlier in water; Cool to after the sterilization below 45 ℃, obtain stabilizing agent syrup base-material, the back mixes with fermented yoghourt; Obtain base-material, promptly obtain not sterilization (viable bacteria) type fermented type milk-contained drink or sour milk beverage in all without the direct cold-aseptic filling of sterilization machine to packaging unit through the red date particles feed liquid of sterilization and base-material.
According to the method for the invention, when the solid content of used red date particles feed liquid is higher, possibly be unfavorable for that direct pumping gets into the production pipeline, therefore, can the red date particles feed liquid be added suitable quantity of water and dilute, be beneficial to pumping.According to the preferred embodiments of the invention; Red date particles content in the red date particles feed liquid for preparing preferably is controlled in 50～90wt.% scope; Preferable range is 50～65wt%, and this red date particles feed liquid can be got into by smooth pumping and produce the pipeline sterilization, guarantees to produce and carries out continuously.
According to the method for the invention, for the shape and the uniform state of red date particles in the red date particles material-compound tank that guarantee red date particles, the rotating speed of the mixer in the red date particles material-compound tank may be controlled to about 30-80rpm; In production method of the present invention, preferably, adopt displacement pump that the red date particles feed pump is sent into and produce sterilization in the pipeline.Said displacement pump can be screw pump, gear pump or membrane pump;
According to the method for the invention, in order to guarantee the accurate quantitative filling of red date particles, the feed liquid can that mixes red date particles adopts suitable granule filling machine to carry out can separately.Red date particles feed liquid after the sterilization is cooled to about 90 ℃; Generally be 85-90 ℃, hot filling or be cooled to cryogenic sterile below 30 ℃ and be filled in the packaging unit (for example the flexible package body gathers and moulds bottle/jar etc.); For guaranteeing the canned smoothly of red date particles in the product; Should select to have the granule filling machine of suitable caliber fill head, preferably, the fill head caliber of granule filling machine is 2-5 a times of red date particles particle diameter.For example, the fill head of employing 10mm caliber is come the red date particles of can 4 * 4 * 4mm.
According to the method for the invention, the base-material can is adopted feed liquid is cooled to about 90 ℃, generally is 85-90 ℃, hot filling or be cooled to cryogenic sterile below 30 ℃ and be filled in the packaging unit (for example the flexible package body gathers and moulds bottle/jar etc.).
The packaging unit that is suitable for milk beverage of the present invention preferably includes: PET, HDPE, Tetra Pak, Kang Meibao etc.
The production method that contains the leben of red date particles provided by the present invention has realized that base-material and red date particles feed liquid prepare separately; Sterilization separately; Can separately; Can better control the addition of red date particles in process of production, reduce because error in the production process or emergency the loss of the red date particles raw material that (mixing that causes like power failure the base-material of particle can't reclaim) cause.
In the production method of two kinds of milk beverages that contain red date particles provided by the invention; Can avoid out the uneven situation of each packaging unit red date particles content in the ready-made article; When producing the milk beverage of same amount, the amount of employed red date particles raw material is less relatively, helps saving production cost; Red date particles content is even in the unit package of each milk beverage, and good mouthfeel has kept the nutrition in milk and the red date particles, has improved product quality.Production method provided by the invention is applied widely, and product form is many, and market application foreground is wide.
In the production method of two kinds of milk beverages that contain red date particles provided by the invention, need not adopt particular form to guarantee gnotobasis, avoid because of adopting sterile equipment to cause the increase of production cost to carry out sterile working; Production technology is relatively simple, helps reducing production costs; Production cycle is long more, and the time that milk liquid and red date particles retain in producing pipeline is also just long more, and is also just big more to the influence of its flavor taste, and in the production method of the present invention, the production cycle is shorter, and the flavor taste of the milk beverage that obtains at last is unaffected.
The specific embodiment
Below specify technology of the present invention and characteristics through specific embodiment, but these embodiment are not in order to limit protection scope of the present invention.
Embodiment 1, the leben that contains red date particles and preparation thereof
Prescription (in one ton of product):
350 kilograms in milk
80 kilograms of white granulated sugars
3 kilograms of sodium carboxymethylcelluloses
1.5 kilograms of high acyl gellan gums
0.5 kilogram of propylene glycol alginate
YF-L706 (the freezing bacterial classification of CHR HANSEN) 100 grams
1 kilogram of lactic acid
0.5 kilogram of citric acid
50 kilograms of red date particles
1.5 kilograms in essence
Excess water.
Raw material standard:
Milk: protein >=2.95%, fat >=3.0%, non-fat solid >=8.5%.
White granulated sugar: meet country-level standard.
The red date particles raw material adopts the red date product process in advance: flesh-content >=65.0% wherein; Red date particles particle diameter: 3mm; Pulp is fresh, and the normal fragrance of red date is arranged; PH:3.50-4.3; Pol: 23BX.
Pure water, lactic acid, citric acid: National standard.
All the other raw materials meet the correlated quality standard-required.
The preparation process:
1) standardization is good milk carries out homogeneous, and homogenizing temperature is that 70～75 ℃, pressure are 200bar (transfer secondary to make Pressure gauge be designated as 50bar earlier, transfer one-level to make Pressure gauge be designated as 200bar again); Through 95 ℃/300s or 110121 ℃/4～12s sterilization; Cool to 43 ± 1 ℃ then, add deep cooling bacterial classification YF-L706, mix; Be cooled to 4～25 ℃ behind heat-preservation fermentation 3.5～5h, it is subsequent use to obtain the sour milk base-material.
2) preparation base-material: with white granulated sugar and sodium carboxymethylcellulose, gellan gum, propylene glycol alginate dried be mixed even, fully dissolving in 75 ℃ of water, cooling back and required sour milk mix, lactic acid and citric acid are dissolved in 50 times the batching water; Online acid adjustment gets into material-compound tank, stirs fast, replenishes suitable quantity of water; Add flavoring essence, mix, carry out homogeneous; Homogenizing temperature 65-70 ℃, homogenization pressure is that (transfer the secondary pressure handle earlier, pressure regulation is to 50bar for 200bar; Transfer the first class pressure handle again, pressure regulation is to 200bar), obtain base-material, and be conveyed into the production pipeline;
3) the online interpolation of red date particles: in the compensating cylinder that has stirring (speed of stirring is 30rpm), add red date particles feed liquid (red date particles content is 50wt%); Configure firm discharge; Proportionally on-line mixing of pipeline and base-material is produced in red date particles feed liquid input; Obtain mixed liquor, then mixed liquor is transported in the tubular type sterilization machine through displacement pump, under 121 ℃ temperature, carry out the 4s sterilization;
3) feed liquid can: the mixed liquor can with after the sterilization obtains milk beverage.
Production process is smooth, and equipment operation is normal, and the red date particles percentage of damage is 4.0%, and is more much lower than the percentage of damage of common process 75%, has guaranteed red date particles shape and mouthfeel preferably.
The product feature of the leben that contains red date particles that present embodiment provides is: the gross weight with milk beverage is a benchmark, and fat content is about 1%, and protein content is about 1%, and soluble solid is about 10%, and red date particles content is about 3.25%.The viscosity of the milk beverage that records 25 ℃ the time with BROKFIELD DV-III type viscosimeter is about the 20-30 centipoise, and the pH value is about 4.2.The milk beverage integrality is even, and red date particles is even suspended dispersed in milk liquid.This product smooth mouth feel when drinking is smooth and easy, and the grain sense along sliding mouthfeel and red date particles of milk is arranged, and has the fragrance of frankincense and red date flavor simultaneously.Through experimental test this to contain liquid milk beverage Product Status in six months normal temperature shelf-lifves process normal, no elutriation state, no lamination does not have serious fat floating, local flavor is normal.
Embodiment 2, the leben that contains red date particles and preparation thereof
Prescription (in one ton of product):
33 kilograms of skimmed milk powers
70 kilograms of white granulated sugars
2 kilograms of sodium carboxymethylcelluloses
1.2 kilograms of high acyl gellan gums
0.1 kilogram of xanthans
1 kilogram of tartaric acid monoglyceride
Freezing bacterial classification 100 grams of YF-L706 (CHR HANSEN)
LGG (Lactobacillus rhamnosus) 10 grams
1.5 kilograms of lactic acid
0.5 kilogram of malic acid
60 kilograms of red date particles
1.5 kilograms in essence
Excess water.
Raw material standard:
Skimmed milk power: protein>=32.2%; Fat≤1.5%.
White granulated sugar: meet country-level standard.
The red date particles raw material adopts the red date product process in advance: flesh-content >=85.0% wherein; The red date particles particle diameter: length is about 3mm, and width is the fibrous red date particles of about 1mm; Pulp is fresh, and the normal fragrance of red date is arranged; PH:3.00-3.60; Pol: 35-40BX.
Pure water, lactic acid, citric acid: National standard.
All the other raw materials meet the correlated quality standard-required.
The preparation process:
1) skimmed milk power is dissolved in 45～50 ℃ the batching water, stir dissolving fully after, under 45～50 ℃ temperature, be incubated 30min; This solution is heated to 90～95 ℃, and insulation 120min, cool to 37 ℃ then; Add the deep cooling bacterial classification; Mix, homogeneous is cooled to 4～20 ℃ behind the heat-preservation fermentation 60h, and it is subsequent use to obtain zymotic fluid.
2) preparation base-material: with white granulated sugar and sodium carboxymethylcellulose, gellan gum, xanthans and tartaric acid monoglyceride dried be mixed even; The sterilization of 121 ℃/4s is carried out in fully dissolving then in 75 ℃ of water, cools to after the sterilization below 45 ℃; Obtain stabilizing agent syrup base-material, subsequent use; Stabilizing agent syrup base-material and required zymotic fluid are mixed, and lactic acid and malic acid are dissolved in an amount of batching water, online acid adjustment; Get into material-compound tank, stir fast, replenish suitable quantity of water; Add flavoring essence, mix, homogeneous ℃ carries out in adjustment temperature to 30～40; Homogenization pressure is that (transfer the secondary pressure handle earlier, pressure regulation is to 50bar for 200bar; Transfer the first class pressure handle again, pressure regulation is to 200bar), cool to 4 ℃ behind the homogeneous, obtain base-material, pipeline is produced in subsequent use or input;
3) the online interpolation of red date particles: in the compensating cylinder that has stirring (speed of stirring is 80rpm), add red date particles feed liquid (red date particles content is 65wt%); Configure firm discharge; Proportionally on-line mixing of pipeline and base-material is produced in red date particles feed liquid input; Obtain mixed liquor, then mixed liquor is carried in the bottle placer through displacement pump;
4) feed liquid can:, obtain milk beverage with the mixed liquor can.
Production process is smooth, and equipment operation is normal, and the red date particles percentage of damage is 3.0%, and is more much lower than the percentage of damage of common process 75%, has guaranteed red date particles shape and mouthfeel preferably.
The product feature of the leben that contains red date particles that present embodiment provides is: with the milk beverage gross weight is benchmark; Fat content is about 0.05%, and protein content is about 1.0%, and soluble solid content is about 8.0%; Red date particles content is about 5%, lactic acid bacteria number about 1 * 10
7CFU/ml, the about lactic acid bacteria number of LGG about 1 * 10
6CFU/ml.The viscosity of the milk beverage that records 25 ℃ the time with BROKFIELD DV-III type viscosimeter is about the 25-35 centipoise, and the pH value is about 4.00.The integrality of milk beverage is even, and red date particles is even suspended dispersed in milk liquid.This product smooth mouth feel when drinking is smooth and easy, and the grain sense along sliding mouthfeel and red date particles of milk is arranged, and the fragrance of frankincense and red date flavor is arranged simultaneously.Through experimental test this to contain liquid milk beverage Product Status in six months normal temperature shelf-lifves process normal, no elutriation state, no lamination does not have serious fat floating, local flavor is normal.
Embodiment 3, the leben that contains red date particles and preparation thereof
Prescription (in one ton of product):
500 kilograms in milk
65 kilograms of white granulated sugars
1.5 kilograms of pectin
1.2 kilograms of high acyl gellan gums
0.1 kilogram of xanthans
1 kilogram of monoglyceride
YO-MIX863LYO (Danisco freeze-drying lactobacillus) 100 grams
1.0 kilograms of malic acid
0.5 kilogram of citric acid
60 kilograms of red date particles
1.5 kilograms in essence
Excess water.
Raw material standard:
Milk: protein >=2.95%; Fat >=3.0%; Non-fat solid >=8.5%.
White granulated sugar: meet country-level standard.
The red date particles raw material adopts the red date product process in advance: flesh-content >=85.0% wherein; The red date particles particle diameter: length is about 3mm, and width is the fibrous red date particles of about 1mm; Pulp is fresh, and the normal fragrance of red date is arranged; PH:4.00-4.40; Pol: 35-40BX.
Pure water, lactic acid, citric acid: National standard.
All the other raw materials meet the correlated quality standard-required.
The preparation process:
1) standardization is good milk carries out homogeneous, and homogenizing temperature is that 70～75 ℃, pressure are 200bar (transfer secondary to make Pressure gauge be designated as 50bar earlier, transfer one-level to make Pressure gauge be designated as 200bar again); Through 95 ℃/300s or 110121 ℃/4～12s sterilization; Cool to 43 ± 1 ℃ then, add deep cooling bacterial classification YF-L706, mix; Be cooled to 4～25 ℃ behind heat-preservation fermentation 3.5～5h, it is subsequent use to obtain the sour milk base-material.
2) preparation red date particles feed liquid: red date particles is added in the red date particles material-compound tank, and slowly stirring makes red date particles in water, be homogeneously dispersed state (containing red date particles 85%).
3) preparation base-material: with white granulated sugar and pectin, gellan gum, xanthans and monoglyceride dried be mixed even, fully dissolving in 75 ℃ of water, cooling back and required sour milk mix, lactic acid and citric acid are dissolved in 50 times the batching water; Online acid adjustment gets into material-compound tank, stirs fast, replenishes suitable quantity of water; Add flavoring essence, mix, carry out homogeneous; Homogenizing temperature 65-70 ℃, homogenization pressure is that (transfer the secondary pressure handle earlier, pressure regulation is to 50bar for 200bar; Transfer the first class pressure handle again, pressure regulation is to 200bar), obtain base-material, and be conveyed into the production pipeline;
4) sterilization: the red date particles feed liquid for preparing through the sterilization of tubular type sterilization machine, is obtained the red date particles feed liquid of commercial sterilization, and the sterilization parameter is 105 ℃/30s; Base-material is delivered to the sterilization machine sterilization, and the sterilization parameter is 121 ℃/4s;
5) feed liquid can: at first, with the base-material can after the sterilization, obtain milk beverage again with the red date particles feed liquid can after the sterilization.
6) upset packaging unit: make the good mixing of red date particles and base-material
Production process is smooth, and equipment operation is normal, and the red date particles percentage of damage is 3.0%, and is more much lower than the percentage of damage of common process 75%, has guaranteed red date particles shape and mouthfeel preferably.
The product feature of the milk beverage that contains red date particles that present embodiment provides is: with the milk beverage gross weight is benchmark, and fat content is about 1.5%, and protein content is about 1.5%, and soluble solid content is about 7.5%, and red date particles content is about 5%.The viscosity of the milk beverage that records 25 ℃ the time with BROKFIELD DV-III type viscosimeter is about the 30-45 centipoise, and the pH value is about 4.25.The integrality of milk beverage is even, and red date particles is even suspended dispersed in milk liquid.This product smooth mouth feel when drinking is smooth and easy, and the grain sense along sliding mouthfeel and red date particles of milk is arranged, and the fragrance of frankincense and red date flavor is arranged simultaneously.Through experimental test this to contain liquid milk beverage Product Status in six months normal temperature shelf-lifves process normal, no elutriation state, no lamination does not have serious fat floating, local flavor is normal.
Embodiment 4, contain the acidified milk milk beverage and the production method thereof of red date particles
Prescription (in one ton of product):
42 kilograms of whole milk powders
80 kilograms of white granulated sugars
1.5 kilograms of sodium carboxymethylcelluloses
1.5 kilograms of pectin
1.2 kilograms of gellan gums
YC-380 (the freezing bacterial classification of CHR HANSEN) 250DCU
1.0 kilograms of malic acid
0.5 kilogram of citric acid
60 kilograms of red date particles
1.5 kilograms in essence
Excess water.
Raw material standard:
Skimmed milk power: protein >=24%; Fat >=26%.
White granulated sugar: meet country-level standard.
The red date particles raw material adopts the red date product process in advance: flesh-content >=85.0% wherein; The red date particles particle diameter: length is about 4mm, and width is the fibrous red date particles of about 1mm; Pulp is fresh, and the normal fragrance of red date is arranged; PH:3.50-4.00; Pol: 20-25BX.
Pure water, lactic acid, citric acid: National standard.
All the other raw materials meet the correlated quality standard-required.
The preparation process:
1) whole milk powder is dissolved in 45～50 ℃ the batching water, stir dissolving fully after, under 45～50 ℃ temperature, be incubated 30min; This solution is heated to 90～95 ℃, and insulation 120min, cool to 37 ℃ then; Add the deep cooling bacterial classification; Mix, homogeneous is cooled to 4～20 ℃ behind the heat-preservation fermentation 60h, and it is subsequent use to obtain zymotic fluid.
2) preparation base-material: be mixed evenly with white granulated sugar and sodium carboxymethylcellulose, pectin and gellan gum are dried, in 75 ℃ of water, fully dissolve, carry out the sterilization of 121 ℃/4s then, cool to after the sterilization below 45 ℃, obtain stabilizing agent syrup base-material, subsequent use; Stabilizing agent syrup base-material and required zymotic fluid are mixed, and malic acid and citric acid are dissolved in an amount of batching water, online acid adjustment; Get into material-compound tank, stir fast, replenish suitable quantity of water; Add flavoring essence, mix, homogeneous ℃ carries out in adjustment temperature to 30～40; Homogenization pressure is that (transfer the secondary pressure handle earlier, pressure regulation is to 50bar for 200bar; Transfer the first class pressure handle again, pressure regulation is to 200bar), cool to 4 ℃ behind the homogeneous, obtain base-material, pipeline is produced in subsequent use or input;
3) preparation red date particles feed liquid: red date particles is added in the red date particles material-compound tank, add suitable quantity of water, slowly stirring makes red date particles in water, be homogeneously dispersed state (containing red date particles 75%).
4) feed liquid can: at first, with the base-material can, obtain milk beverage again with the can of red date particles feed liquid.
5) upset packaging unit: make the good mixing of red date particles and base-material
Production process is smooth, and equipment operation is normal, and the red date particles percentage of damage is 3.0%, and is more much lower than the percentage of damage of common process 75%, has guaranteed red date particles shape and mouthfeel preferably.
The product feature of the milk beverage that contains red date particles that present embodiment provides is: with the milk beverage gross weight is benchmark, and fat content is about 1.1%, and protein content is about 1.0%, and soluble solid content is about 9.5%, and red date particles content is about 5%.The viscosity of the milk beverage that records 25 ℃ the time with BROKFIELD DV-III type viscosimeter is about the 30-45 centipoise, and the pH value is about 3.95.The integrality of milk beverage is even, and red date particles is even suspended dispersed in milk liquid.This product smooth mouth feel when drinking is smooth and easy, and the grain sense along sliding mouthfeel and red date particles of milk is arranged, and the fragrance of frankincense and red date flavor is arranged simultaneously.Through experimental test this to contain liquid milk beverage Product Status in six months normal temperature shelf-lifves process normal, no elutriation state, no lamination does not have serious fat floating, local flavor is normal.
Embodiment 5 contains the leben and the preparation thereof of red date particles
Prescription (in one ton of product):
350 kilograms in milk
70 kilograms of white granulated sugars
1.0 kilograms of pectin
1.0 kilograms of gellan gums
0.5 kilogram of tartaric acid monoglyceride
YF-L706 (the freezing bacterial classification of CHR HANSEN) 25 grams
0.5 kilogram of lactic acid
0.5 kilogram of citric acid
12.5 kilograms of red date particles
1.5 kilograms in essence
Excess water.
Raw material standard:
Milk: protein >=2.95%, fat >=3.0%, non-fat solid >=8.5%.
White granulated sugar: meet country-level standard.
The red date particles raw material adopts the red date product process in advance: flesh-content >=80.0% wherein; Red date particles particle diameter: 3mm; Pulp is fresh, and the normal fragrance of red date is arranged; PH:3.50-4.3; Pol: 23BX.
Pure water, lactic acid, citric acid: National standard.
All the other raw materials meet the correlated quality standard-required.
The preparation process:
1) standardization is good milk carries out homogeneous, and homogenizing temperature is that 70～75 ℃, pressure are 200bar (transfer secondary to make Pressure gauge be designated as 50bar earlier, transfer one-level to make Pressure gauge be designated as 200bar again); Through 95 ℃/300s or 110121 ℃/4～12s sterilization; Cool to 43 ± 1 ℃ then, add deep cooling bacterial classification YF-L706, mix; Be cooled to 4～25 ℃ behind heat-preservation fermentation 3.5～5h, it is subsequent use to obtain the sour milk base-material.
2) preparation base-material: with white granulated sugar and pectin, gellan gum, tartaric acid monoglyceride dried be mixed even, fully dissolving in 80 ℃ of water, cooling back and required sour milk mix, lactic acid and citric acid are dissolved in 50 times the batching water; Online acid adjustment gets into material-compound tank, stirs fast, replenishes suitable quantity of water; Add flavoring essence, mix, carry out homogeneous; Homogenizing temperature 65-70 ℃, homogenization pressure is that (transfer the secondary pressure handle earlier, pressure regulation is to 50bar for 200bar; Transfer the first class pressure handle again, pressure regulation is to 200bar), obtain base-material, and be conveyed into the production pipeline;
3) the online interpolation of red date particles: in the compensating cylinder that has stirring (speed of stirring is 30rpm), add red date particles feed liquid (red date particles content is 80wt%); Configure firm discharge; Proportionally on-line mixing of pipeline and base-material is produced in red date particles feed liquid input; Obtain mixed liquor, then mixed liquor is transported in the tubular type sterilization machine through displacement pump, under 121 ℃ temperature, carry out the 4s sterilization;
3) feed liquid can: the mixed liquor can with after the sterilization obtains milk beverage.
Production process is smooth, and equipment operation is normal, and the red date particles percentage of damage is 4.0%, and is more much lower than the percentage of damage of common process 75%, has guaranteed red date particles shape and mouthfeel preferably.
The product feature of the leben that contains red date particles that present embodiment provides is: the gross weight with milk beverage is a benchmark, and fat content is about 1%, and protein content is about 1%, and soluble solid is about 8%, and red date particles content is about 1%.The viscosity of the milk beverage that records 25 ℃ the time with BROKFIELD DV-III type viscosimeter is about the 15-25 centipoise, and the pH value is about 4.2.The milk beverage integrality is even, and red date particles is even suspended dispersed in milk liquid.This product smooth mouth feel when drinking is smooth and easy, and the grain sense along sliding mouthfeel and red date particles of milk is arranged, and has the fragrance of frankincense and red date flavor simultaneously.Through experimental test this to contain liquid milk beverage Product Status in six months normal temperature shelf-lifves process normal, no elutriation state, no lamination does not have serious fat floating, local flavor is normal.
Embodiment 6 contains the leben and the preparation thereof of red date particles
Prescription (in one ton of product):
500 kilograms in milk
75 kilograms of white granulated sugars
3.5 kilograms of pectin
2.5 kilograms of sodium carboxymethylcelluloses (low sticking)
1.5 kilograms of gellan gums
1 kilogram of propylene glycol alginate
1.5 kilograms of monoglycerides
YO-MIX863LYO (Danisco freeze-drying lactobacillus) 50 grams
2.5 kilograms of malic acid
1.5 kilograms of citric acids
250 kilograms of red date particles
1.5 kilograms in essence
Excess water.
Raw material standard:
Milk: protein >=2.95%; Fat >=3.0%; Non-fat solid >=8.5%.
White granulated sugar: meet country-level standard.
The red date particles raw material adopts the red date product process in advance: flesh-content >=80.0% wherein; The red date particles particle diameter: length is about 3mm, and width is the fibrous red date particles of about 1mm; Pulp is fresh, and the normal fragrance of red date is arranged; PH:4.00-4.40; Pol: 35-40BX.
Pure water, lactic acid, citric acid: National standard.
All the other raw materials meet the correlated quality standard-required.
The preparation process:
1) standardization is good milk carries out homogeneous, and homogenizing temperature is that 70～75 ℃, pressure are 200bar (transfer secondary to make Pressure gauge be designated as 50bar earlier, transfer one-level to make Pressure gauge be designated as 200bar again); Through 95 ℃/300s or 110121 ℃/4～12s sterilization; Cool to 43 ± 1 ℃ then, add bacterial classification YO-MIX863LYO, mix; Be cooled to 4～25 ℃ behind heat-preservation fermentation 3.5～5h, it is subsequent use to obtain the sour milk base-material.
2) preparation red date particles feed liquid: red date particles is added in the red date particles material-compound tank, and slowly stirring makes red date particles in water, be homogeneously dispersed state (containing red date particles 80%).
3) preparation base-material: with white granulated sugar and sodium carboxymethylcellulose (low sticking), gellan gum, propylene glycol alginate and monoglyceride dried be mixed even, fully dissolving in 80 ℃ of water, cooling back and required sour milk mix, malic acid and citric acid are dissolved in 50 times the batching water; Online acid adjustment gets into material-compound tank, stirs fast, replenishes suitable quantity of water; Add flavoring essence, mix, carry out homogeneous; Homogenizing temperature 65-70 ℃, homogenization pressure is that (transfer the secondary pressure handle earlier, pressure regulation is to 50bar for 200bar; Transfer the first class pressure handle again, pressure regulation is to 200bar), obtain base-material, and be conveyed into the production pipeline;
4) sterilization: the red date particles feed liquid for preparing through the sterilization of tubular type sterilization machine, is obtained the red date particles feed liquid of commercial sterilization, and the sterilization parameter is 105 ℃/30s; Base-material is delivered to the sterilization machine sterilization, and the sterilization parameter is 121 ℃/4s;
5) feed liquid can: at first, with the base-material can after the sterilization, obtain milk beverage again with the red date particles feed liquid can after the sterilization.
6) upset packaging unit: make the good mixing of red date particles and base-material
Production process is smooth, and equipment operation is normal, and the red date particles percentage of damage is 3.0%, and is more much lower than the percentage of damage of common process 75%, has guaranteed red date particles shape and mouthfeel preferably.
The product feature of the milk beverage that contains red date particles that present embodiment provides is: with the milk beverage gross weight is benchmark, and fat content is about 1.5%, and protein content is about 1.5%, and soluble solid content is about 8%, and red date particles content is about 20%.The viscosity of the milk beverage that records 25 ℃ the time with BROKFIELD DV-III type viscosimeter is about the 30-45 centipoise, and the pH value is about 4.15.The integrality of milk beverage is even, and red date particles is even suspended dispersed in milk liquid.This product smooth mouth feel when drinking is smooth and easy, and the grain sense along sliding mouthfeel and red date particles of milk is arranged, and the fragrance of frankincense and red date flavor is arranged simultaneously.Through experimental test this to contain liquid milk beverage Product Status in six months normal temperature shelf-lifves process normal, no elutriation state, no lamination does not have serious fat floating, local flavor is normal.
The comparative example 1
Except that the gellan gum consumption is 0.8 kilogram, other component and consumption are identical with embodiment 1, to prepare the leben that contains red date particles with embodiment 1 identical method.
The comparative example 2
Except that the gellan gum consumption is 0.6 kilogram, other component and consumption are identical with embodiment 2, to prepare the leben that contains red date particles with embodiment 2 identical methods.
The Detection of Stability of product system
The product that provides with embodiment 1-6 and comparative example 1,2 is a laboratory sample, and the finished product (leaching red date particles) of getting 10ml is put into the centrifuge tube of band scale, through the centrifugal 10min of 3000rpm.After the centrifugal end, observe precipitation capacity,, prove that this product is stable if be lower than 1%.Centrifugal result such as following table 1:
Table 1
| Centrifugation amount (volume %) | Centrifugal elutriation (volume %) | |
| Embodiment 1 | ?0.4 | Do not have |
| Embodiment 2 | ?0.3 | Do not have |
| Embodiment 3 | ?0.6 | Do not have |
| Embodiment 4 | 0.5 | Do not have |
| Embodiment 5 | 0.5 | Do not have |
| Embodiment 6 | 0.6 | Do not have |
| The comparative example 1 | 0.9 | Do not have |
| The comparative example 2 | 1.0 | 0.2 |
Under normal temperature, 43 ℃ temperature conditions, investigate the fat floating stability of product system respectively; Observed at the 1st, 3,5,7,15,30 day respectively; As not occurring phenomenons such as flocculation, elutriation in the fruit product, prove that this product is stable, fat floating stability result such as following table 2:
Table 2
The stability that red date particles distributes in the product
Product with embodiment 1-6 is a laboratory sample, under normal temperature (23-36 ℃) environmental condition, carries out static observation, the distribution of testing product red date particles.
The check that red date particles distributes: pour the upper, middle and lower three equal parts of the product of individual packaging unit successively in the clean container; Measure the red date particles content of different equal portions then respectively; Thereby the distribution of checking red date particles, result's (data in the form are the red date particles content % of each layer) as shown in table 3.
The detection of red date particles content adopts following method to carry out:
Checkout equipment:
1.00mm size sieves; The electronic balance of 0-10 kilogram;
Detect step:
1) size sieves of 1.00mm is crossed water after, with the dry residual moisture (for example wipe the water around screen cloth and the sieve, perhaps utilize drying equipment to carry out dried) of removing of size sieves, weigh up the weight of sieve with dry towel, remember and be A.
2) size sieves with 1.00mm is placed on the electronic balance, with the zero clearing of electronic balance reading.
3) sample to be measured is shaken up after, 100～200.0 gram samples are poured in the size sieves, accurate weighing example weight, note is B.
4) whole liquid such as cow's milk are removed in the size sieves inclination, about 4 minutes (inclined degree does not go out red date particles to remove liquid and is as the criterion); Towel off screen cloth and sieve water on every side, accurately weighing then, note is C.
Cubage: clean red date particles content (%)=(C-A)/B * 100%
Table 3
Can be known that by last table red date particles can be good at evenly being suspended in the product and can keep considerable time, suspension is better.
Detect with reference to the stability of said method to Comparative Examples 1-2, concrete stability observing result is as shown in table 4 below.
Table 4
Claims (9)
1. a leben that contains red date particles is characterized in that, based on the 100wt% leben, its prescription is:
Milk 24～80wt%;
Lactic acid bacteria fermenting agent 0.0025～0.005wt%;
Stabilizing agent 0.25～1wt%;
Red date particles 1～20wt%;
Acidity regulator 0.1～0.4wt%;
Water surplus,
Wherein, said stabilizing agent is the combination of thickener or thickener and emulsifying agent, and its said thickener comprises the high acyl gellan gum of 0.1～0.15wt%.
2. leben according to claim 1 is characterized in that, said thickener also comprises to be selected from and comprises in sodium carboxymethylcellulose, pectin, locust bean gum, gelatin, agar, Arabic gum, guar gum, xanthans, the carragheen one or more.
3. leben according to claim 1; It is characterized in that; Said emulsifying agent is to be selected from the group that comprises glycerin monostearate, bi-tristearin, polyglycerol ester, sucrose ester, stearoyl lactate, citric acid monoglyceride, tartaric acid monoglyceride, butanedioic acid monoglyceride, acetate monoglyceride, junket wine acid sodium, propylene glycol alginate one or more, and the content of said emulsifying agent is 0.5～1.5wt ‰.
4. leben according to claim 1 is characterized in that, said acidity regulator is to be selected from the group that comprises lactic acid, citric acid and malic acid one or more.
5. leben according to claim 1; It is characterized in that said lactic acid bacteria fermenting agent is to be selected to comprise among lactobacillus bulgaricus Lactobacillus bulgaricus, streptococcus thermophilus Streptococcus thermophilus, lactobacillus acidophilus Lactobacillus.acidophilus, Bifidobacterium Bifidobacterium, Lactobacillus casei Lactobacillys case and the Lactobacillus rhamnosus Lactobacillus GG one or more.
6. a method for preparing the said leben of claim 1 is characterized in that, said method comprising the steps of:
1) preparation sour milk, with the sterilization of milk homogeneous, aseptic then interpolation lactic acid bacteria fermenting agent fermentation;
2) preparation base-material, the steady dissolution agent mixes with sour milk then, adds the acidity regulator acid adjustment, then stirring, homogeneous;
3) add red date particles; In having the compensating cylinder of stirring, add the red date particles feed liquid; Utilize displacement pump that proportionally on-line mixing of pipeline and base-material is produced in red date particles feed liquid input, obtain mixed liquor, wherein the system pressure of the base-material behind the pressure of displacement pump and the homogeneous is consistent;
4) mixed liquor sterilization; And
5) with the mixed liquor can after the sterilization, obtain leben.
7. method according to claim 6 is characterized in that, the rotating speed of the mixer in the said compensating cylinder is 30-80rpm.
8. a method for preparing the said leben of claim 1 is characterized in that, said method comprising the steps of:
1) preparation sour milk, with the sterilization of milk homogeneous, aseptic then interpolation lactic acid bacteria fermenting agent fermentation;
2) preparation red date particles feed liquid adds red date particles in the red date particles material-compound tank, adds required water, slowly stirs to make red date particles in water, be homogeneously dispersed state;
3) preparation base-material, stabilizing agent fully mixes with required sour milk after the dissolving in water, adds the acidity regulator acid adjustment, adds excess water, stirs, and carries out homogeneous then;
4) sterilization is with red date particles feed liquid for preparing and base-material sterilization respectively;
5) feed liquid can, the red date particles feed liquid after the first can sterilization, the base-material after the can sterilization obtains leben then;
6) the upset packaging unit makes red date particles and base-material mixing.
9. according to claim 6 or 8 described methods, it is characterized in that red date particles content is 50～90wt% in the red date particles feed liquid that configures.
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| CN103125596B (en) * | 2011-12-02 | 2014-10-29 | 光明乳业股份有限公司 | Solidified-type yoghurt and preparation method thereof |
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| CN103598327A (en) * | 2013-11-14 | 2014-02-26 | 安徽曦强乳业集团有限公司 | Method for producing sterilizing lactobacillus beverage |
| CN104381447A (en) * | 2014-10-21 | 2015-03-04 | 田维荣 | Fermented red date and lactic acid bacteria beverage and preparation process thereof |
| EP3212005B1 (en) * | 2014-10-30 | 2018-09-19 | Nestec S.A. | Packaged, ambient-stable dairy beverage |
| CN106509102B (en) * | 2016-10-11 | 2019-09-27 | 内蒙古蒙牛乳业（集团）股份有限公司 | Milk-contained drink and preparation method thereof |
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| CN106689964B (en) * | 2016-12-30 | 2020-07-10 | 厦门欧凯科技有限公司 | Stabilizer for sterilization type fermented protein beverage, sterilization type fermented protein beverage and preparation method |
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| CN108651616A (en) * | 2017-03-31 | 2018-10-16 | 内蒙古伊利实业集团股份有限公司 | It is a kind of can the preparation method of granular pattern fermented dairy product that preserves of long-term room temperature |
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