A kind of dairy produce and its production technology
Technical field
The present invention relates to a kind of dairy produces and its production technology with Vacuum Freezing & Drying Technology production, belong to food industry neck
Domain.
Background technique
Yoghourt not only remains all nutriments of milk, and by the process of fermentation, can by milk sugar and
Breaks down proteins are easy at small-molecule substance by human consumption and absorption.In addition, the probiotics contained in Yoghourt is beneficial to human body
Intestinal health weakens spoilage organisms and generates toxin in human body, and can inhibit the generation of certain carcinogens, has certain anti-cancer
Effect, so more and more popular with consumers.However sour milk product is mostly in the majority with coagulating type currently on the market, it need to be 2~3
DEG C environment in refrigerated, the shelf-life is generally 21 days, and kind taste nutrition is more single, and the shelf-life is shorter, store method
It is special, it is inconvenient to carry, it is unable to satisfy safe and healthy modern metropolitan cities crowd, full of nutrition, multiple tastes, conveniently consumes
Demand.
In view of the above technical problems, Patent No. 2013105965374 " a kind of vacuum freeze drying fruit vegetable powder Yoghourt and
Preparation method " (calling patent 1 in the following text), Patent No. 201610265329X " a kind of vacuum freeze drying fruit vegetable powder Yoghourt and its
The innovation and creation of preparation method " (calling patent 2 in the following text) respectively provide a set of technical solution, but two sets of technical solutions still remain
Certain defect.For example, the butter needs in patent 1 are sufficiently melted to fluid in the environment of 50 DEG C, need to heat pansman
Skill, temperature is easy solidification after reducing, so that finished product mouthfeel is partially hard;The temperature of sizing is -30 DEG C, and the time needs 2~3h, when quick-frozen
Between need 4~6h, add up to need 6~9 hours, time-consuming;In addition, molten beans freeze temperature is excessively high, the probiotics in Yoghourt is basic
It is dead.For another example in patent 2, cream needs -15 DEG C of deepfreezes, needs when use slow to freeze or be warming up to stream shape body;Yoghourt and
Sour milk powder needs to add emulsifier and thickener is carried out being warming up to 50 DEG C and be dissolved, and boiling emulsion process, Yoghourt itself
Probiotic active reduces, and may decay and accelerate to death;Need to use the addition such as emulsifier, thickener, citric acid, malic acid
Agent;In the freezer of -8 to -12 degree, delay and freeze 2~3 hours, the quick-frozen time is 2~3 hours, the sizing speed for wanting 4-6 hours altogether
Freeze the time, the time is long.
On the basis of the above, the invention patent has carried out upgrading to the production technology of such dairy produce, in certain journey
Solves the defect of the prior art on degree.
Summary of the invention
The present invention is directed to overcome prior art defect, a kind of dairy produce and its production technology are provided.Specific technical solution is such as
Under:
A kind of dairy produce and its production technology, it is characterised in that: raw material includes the component of following parts by weight:
70~90 parts by weight of Yoghourt, 2~12 parts by weight of milk powder, 1~11 parts by weight of whey powder, 1~11 parts by weight of refined sugar, benefit
Raw 0.002~0.02 parts by weight of bacterium;
Preparation method includes the following steps:
S1. mixing: mixing after probiotics is added in Yoghourt with milk powder, whey powder, refined sugar in proportion, stirs evenly to obtain mixing
Material;
S2. it dismisses: mixture investment agitated kettle is sufficiently dismissed to the homogeneous material that blisters to obtain;
S3. it spreads disk: having weighed homogeneous material by every disk mold amount, be cast in uniform ground on mold and obtain molding mass;
S4. quick-frozen: by molding mass it is quick-frozen to central temperature be lower than -25 DEG C, obtain quick-frozen material;
S5. it is lyophilized: quick-frozen material progress vacuum freeze drying is obtained into finished product.
As a preference, < -30 DEG C of quick-frozen environment temperature in the step S4, the quick-frozen time is time 3h~4h.
As a preference, the vacuum degree being lyophilized in the step S5 is 50~80Mpa.
As a preference, the temperature curve being lyophilized in the step S5 is to be warming up to 75 DEG C in 1 hour, constant temperature 6 hours,
It is cooled within 2 hours 45 DEG C again, last constant temperature 1 hour cools to 30 DEG C.
As a preference, dairy produce water content prepared by the production technology is lower than 5%.
As a preference, used Yoghourt is made using cow's milk, sheep cream or reconstituted milk as major ingredient through ingredient, sterilization, fermentation
At frozen type Yoghourt, zymophyte used be lactic acid Bifidobacterium, bifidobacterium longum, Lactobacillus helveticus, Lactobacillus casei or
Lactobacillus rhamnosus adds one or more probiotics.
As a preference, the probiotics is bifidobacterium longum, lactobacillus paracasei, streptococcus thermophilus, acidophilus cream bar
Bacterium, Lactobacillus rhamnosus, lactobacillus fermenti, Lactobacillus helveticus, Lactobacillus salivarius, lactobacillus reuteri, lactobacillus plantarum, Yue Shi
Lactobacillus, lactobacillus gasseri, lactobacillus bulgaricus, Lactobacillus crispatus, Lactobacillus casei, bifidobacterium infantis, short bifid bar
One of bacterium, bifidobacterium bifidum, animal bifidobacteria (bifidobacterium lactis), bifidobacterium adolescentis are a variety of.
The invention has the benefit that guaranteeing the probiotic active in Yoghourt without heating boiling;Without any addition
Agent guarantees the food safety of gained dairy produce;Integrated artistic optimization is convenient suitable for mass production, at low cost;Total abundant adfreezing
Setting time is 3h~4h, time-consuming short;Probiotics is added, more beneficial to human health;Especially just melt in the mouth, fragrance is obvious,
Taste flavor is preferable, and trophic structure is abundant, and promotional value is higher.
Specific embodiment
A kind of dairy produce provided by the invention and its production method are further explained by the following examples.
S1. supplementary material check and accept: into factory's raw material according to supplementary material acceptance criteria acceptance(check) after, by number of processes requirement preparation
The supplementary material that the same day uses;
S2. it stores: Yoghourt being stored in condition and is suitable in lower than 2~5 DEG C storehouses;
S3. ingredient: each component is weighed by following parts by weight:
70~90 parts by weight of Yoghourt, 2~12 parts by weight of milk powder, 1~11 parts by weight of whey powder, 1~11 parts by weight of refined sugar, benefit
Raw 0.002~0.02 parts by weight of bacterium;
In a preferred embodiment of the invention, the Yoghourt is using cow's milk, sheep cream or reconstituted milk as major ingredient, through matching
Material, sterilization, ferment made of frozen type Yoghourt, the zymophyte used of the Yoghourt is lactic acid Bifidobacterium, bifidobacterium longum, auspicious
Scholar's lactobacillus, Lactobacillus casei or Lactobacillus rhamnosus add one or more probiotics.
In a preferred embodiment of the invention, the probiotics be bifidobacterium longum, it is lactobacillus paracasei, thermophilic
Streptococcus, lactobacillus acidophilus, Lactobacillus rhamnosus, lactobacillus fermenti, Lactobacillus helveticus, Lactobacillus salivarius, lactobacillus reuteri,
Lactobacillus plantarum, Yue Shi lactobacillus, lactobacillus gasseri, lactobacillus bulgaricus, Lactobacillus crispatus, Lactobacillus casei, Ying Ershuan
One of discrimination bacillus, bifidobacterium breve, bifidobacterium bifidum, animal bifidobacteria (bifidobacterium lactis), bifidobacterium adolescentis
Or it is a variety of.
S4. mixing: above-mentioned ingredient is mixed in proportion, mixture is stirred evenly to obtain;
S5. it dismisses: the mixture got ready being put into agitated kettle and is stirred evenly, be sufficiently stirred and dismiss to blistering, when stirring
Between 10 minutes, obtain homogeneous material;
S6. it spreads disk: weighing mixed material by every disk mold amount, being cast on mold for uniform ground obtains molding mass;
S7. by molding mass quick-frozen 3~4 hours in the environment of -30 DEG C, until central temperature is lower than -25 DEG C, quick-frozen material is obtained;
S8. quick-frozen material progress vacuum freeze drying is obtained into finished product;
S9. discharging: handling with care when discharging, chooses discoloration and owes dry product and severe atrophy, dried frozen aquatic products is put into PE bags double-deck
In, it is tamping sack, pays attention to environmental sanitation, 25 DEG C of humidity < 45%, temperature <;
S10. packaging material is checked and accepted: being tested according to corresponding package acceptance of materials standard, qualified rear can be used;
S11. required grammes per square metre, sealed package finished product packing: are packaged by every using the packaging bag aluminized;Big packaging uses
PE bags of the double-deck 0.08mm thickness, sack heat-sealing;Outer packing needs additional corrugated case, and humid control is less than 45%, and 25 DEG C of temperature <;
Or it is packed according to customer requirement;
S12. product inspection: quality control sampling carries out physics and chemistry, microorganism, organoleptic indicator's inspection;
S13. warehousing finished products: finished product should neatly be stacked in designated place and be identified and obviously, aeration-drying, cool place is protected from light,
Protection against rodents worm facility is good.
Evaluate identification experiment:
Experiment number totally 28 people carries out sense organ comparison to the freeze-drying dairy produce of above-mentioned preparation and traditional freezing milk cream respectively
Evaluation.
Experimental grade criterion refers to following table:
Experimental result review record is in following table:
Evaluation identification is summarized:
Totally 28 people, score are that score is averaged after each reviewer evaluates to experiment number.
Evaluate appraiser composition: 10 people of intra-company, 12 people of customer survey, 6 people of circle of friends.
Evaluating qualification result from sense organ can be seen that freeze-drying dairy produce provided by the present invention without heating boiling, guarantee
Probiotic active in Yoghourt;Without any additive, guarantee the food safety of gained dairy produce;Integrated artistic optimization is convenient suitable
Batch production is closed, it is at low cost;Total abundant adfreezing setting time is 3h~4h, time-consuming short;Probiotics is added, more beneficial to strong
Health;Especially just melt in the mouth, fragrance is obvious, and taste flavor is preferable, and promotional value is higher.
The foregoing is only a preferred embodiment of the present invention, therefore cannot successively limit the scope of implementation of the present invention, i.e.,
Equivalent changes and modifications made in accordance with the scope of the invention and the contents of the specification should still be within the scope of the present invention.