CN103300293A - Processing method of wheat seedings as well as instant wheat seeding powder and wheat seeding fiber powder prepared from same - Google Patents
Processing method of wheat seedings as well as instant wheat seeding powder and wheat seeding fiber powder prepared from same Download PDFInfo
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Abstract
The invention discloses a processing method of wheat seedings as well as instant wheat seeding powder and wheat seeding fiber powder prepared from the same, and aims to solve the problem that the wheat seedings can be protruded during the processing by adopting the existing wheat seeding juice powder preparation process, for example, in part of methods, hot air being 145-165 DEG C is used for drying, the processing time is slightly long, and the product quality is seriously influenced. The wheat seedings are processed by adopting a wall-adhering-resisting spray control drying method, the blanching temperature can achieve 95 DEG C-98 DEG C, and enzyme and functionality components in the seedlings are greatly destroyed. The processing method comprises the following steps of: preprocessing, color protecting, pulping, filtering, homogenizing and spray drying. The processing method provided by the invention is capable of effectively reducing the blanching temperature, the functionality components are reserved to be maximum extent, meanwhile, wheat seeding juice is directly sprayed, a relatively good spraying effect is obtained through controlling spraying process parameters, the process is simple, the operating method is simple, the spraying time is short, and a product is not easy to block.
Description
The present invention relates to food processing field, the instant wheat seedling powder of especially a kind of processing method of wheat seeding and preparation thereof and wheat seeding fiber powder.
Background technology
Wheat seeding (Wheat seedling) named agropyron again, is grass family, the young stem and leaf of Triticum (Tritium) plant wheat.China is Wheat Production big country, and based on winter wheat, the wheat annual production is above more than 100,000,000 ton.Winter wheat was going into before the winter and during the early spring, tillering of taking place mostly is ineffective tillering, and therefore, available wheat seeding resource is very abundant.The wheat seeding resource is fully utilized, and the converted products of exploitation suitability for industrialized production seems particularly important and urgent, need cause food worker's concern.
Modern medicine study is found, contain chlorophyll, natural complex, 25% different organized enzyme and the several mineral materials of protein, 20 several amino acids, hundreds of kind in the wheat seeding, functional components is very abundant, have fat-reducing, lipopenicillinase, unique nourishing healthy effect such as anti-oxidant, exploitation is worth huge.Qiao Wenjing (2009) studies show that, the protein content of wheat seedling is far above the protein content in the common fruits and vegetables, in addition with beef in protein content suitable, be 2.6 times of rice; The content of dietary fiber is also very high in the wheat seedling, is 5.0 times of mushroom; The content of vitamin is also quite abundant in the wheat seedling, wherein V
AContent be 6.5 times of egg, be 3.0 times of spinach, V
CAlso than abundant in the common vegetables.Simultaneously, V in the wheat seedling
EContent especially high, be 5.8 times of egg.Its content of mineral substances that contains is also very abundant, and potassium content is 7.4 times of spinach, is 6.1 times of bright jujube; Content of magnesium is 4.3 times of spinach; Calcium content is 2.8 times of spinach, is 1.8 times of cow's milk; Iron content is 6.5 times of spinach, is 5.7 times of beef; Zinc content is 2.8 times of beef, is 15.9 times of spinach.Studies show that of Wang Yonghui etc. (2011) is rich in 18 seed amino acids in the wheat seeding, especially to account for the ratio of total amino acid be 39% to essential amino acid, the ratio of essential amino acid and nonessential amino acid reaches 63%, the idealized model that meets FAO/WHO, the ratio balance is a kind of wholefood.In addition, also contain a large amount of other bioactive ingredients in the wheat seedling, as antioxidant reductase, chlorophyll, Polyphenols and active polysaccharide etc.It is 354.49 U/mgPr that Zhao Chungui etc. (2005) record wheat seedling juice SOD activity, is 7 times of grape, and activity of glutathione peroxidase is 83.63 U/mgPr; Its total antioxidation activity is respectively BHT, alpha-tocopherol 4.9 times and 7.2 times, and wherein flavonoids content is 283 mg/kg.
Along with the progress of society, great change has taken place in people's eating habit, because nutrition is unbalanced, and has caused various rich man's diseases.Wheat seeding is made into food as a kind of pure natural, green, non-harmful raw-food material, is conducive to regulate the nutrient balance in the human body, the rich man's disease that treatment eating habit is brought.Yet wheat seeding self has that the easy brown stain of color, relatively poor, the careless fishy smell of mouthfeel are strong, the easy shortcoming such as losss of nutritional labeling, allows the people that thirst for health hang back, thereby is ignored by people for a long time.
Chinese patent CN00119778.9 discloses a kind of powder of wheat seedling juice preparation technology, and it at first chooses barley seedling, successively through clean, broken, squeeze the juice, filter, concentrate behind the back adding dextrin in aqueous solution after homogenizing, the drying, make powder of wheat seedling juice.This method adopts 145 ~ 165 ℃ of hot blasts to carry out drying, and process time is long slightly, because wheat seeding contains the oxidizing ferment of high-load, this method causes the forfeiture of oxidizing brown stain and nutritional labeling easily, has a strong impact on the quality of product.
Chinese patent CN200710134404.X discloses a kind of preparation method who controls anti-stick wall spray desiccation composite solid fruit and vegetable beverage, this method to fruits and vegetables successively after cleaning, cutting, blanching, making beating, homogeneous, concentrating, need to add drying aid, the anticaking agent of different proportion, to solve the sticking wall problem of Juice when spraying, adopt stabilizing agent to give the granulation typing at last again.The solid fruit and vegetable beverage good stability that this method is produced is difficult for bondingly, but its complex production process is primarily aimed in the higher fruits and vegetables of sugar content; And its blanching temperature is up to 95 ℃-98 ℃, greatly destroyed various enzymes and the functional components in the fruits and vegetables, simultaneously, compositions such as the drying aid that needs in this method to add, anticaking agent, stabilizing agent, and these components in proportions relative fixed, and these compositions influence the mouthfeel of its final products easily, more are unfavorable for the allotment that the product later stage carries out according to the different flavor demand, limited the kind of final products, the product utilization approach is narrow.
Summary of the invention
Goal of the invention of the present invention is: at adopting existing powder of wheat seedling juice preparation technology that wheat seeding is added the outstanding problem in man-hour, adopt 145 ~ 165 ℃ of hot blasts to carry out drying as the part method, process time is long slightly, has a strong impact on product quality; Adopt the anti-stick wall spray drying process of control that wheat seeding is added man-hour, blanching temperature can greatly destroy wherein enzyme and functional components up to 95 ℃-98 ℃; Add compositions such as drying aid, anticaking agent, stabilizing agent, can influence the mouthfeel of final products, limited the kind of product; At these problems, provide a kind of processing method of wheat seeding and instant wheat seedling powder and the wheat seeding fiber powder of preparation thereof.The present invention can effectively reduce blanching temperature, and the functional components in the wheat seeding is at utmost kept, and wheat seeding juice is directly sprayed simultaneously, by control spray art parameter, obtained spray effect preferably, and technology is simple, easy to operate, spray time is short, and product does not lump.The present invention can effectively keep the original nutritional labeling of wheat seeding product, color and luster and local flavor, can carry out seasoning according to consumer demand, has remedied the existing various shortcoming of wheat seeding juice beverage.Simultaneously, the filter residue after wheat seeding juice extracts can be prepared as wheat seeding fiber powder through freeze drying, can be used for adding in all kinds of Flour product as natural colouring matter and its dietary fiber content of increase.The present invention can take full advantage of the wheat seeding resource, has improved economic worth.
To achieve these goals, the present invention adopts following technical scheme:
A kind of processing method of wheat seeding comprises the steps:
(1) preliminary treatment: getting wheat seeding is raw material, cleans up, standby;
(2) protect look: blanching 2-8min in the compound colour protecting liquid that the wheat seeding immersion after step (1) is cleaned is 70 ℃-85 ℃ with the wheat seeding screen filtration, is cooled to room temperature after the blanching;
(3) making beating: the wheat seeding that step (2) is cooled to room temperature moves in the disintegrating machine, and add water and carry out crushing and beating, the wheat seeding juice of must pulling an oar, wherein, the mass ratio of wheat seeding and water is 1:4-8;
(4) filter: the wheat seeding juice of will pulling an oar filters, win filtrate and first filter residue;
(5) homogeneous: first filtrate is poured in the modified homogenizer, is to carry out high-pressure homogeneously twice under 60 ~ 70 ℃ in temperature, and primary pressure is 20 ~ 25MPa, time is 3-10min, secondary pressure is 20 ~ 25MPa, and the time is 3-10min, gets homogeneous wheat seeding juice;
(6) spray-drying: homogeneous wheat seeding juice is carried out spray-drying, get instant wheat seedling powder, wherein, spray-dired EAT is 170 ℃-190 ℃, feed rate is 250mL/h-265mL/h, and leaving air temp is 55 ℃-75 ℃, and atomisation pressure is 0.15MPa-0.5MPa;
In the described step (2), contain 0.01-0.05g citric acid, 0.02-0.08g ascorbic acid, 0.5-2.5g sodium chloride in the compound colour protecting liquid of every 100mL.
In the described step (1), choosing growth time is 30-60 days, length be the wheat seeding of 25 ~ 30cm as raw material, clean up, be cut into the segment of 1-2cm, standby.
In the described step (2), with blanching 6min in the compound colour protecting liquid of 75 ℃ of the wheat seeding immersions after step (1) cleaning, with the wheat seeding screen filtration, be cooled to room temperature after the blanching.
In the described step (2), contain 0.03g citric acid, 0.07g ascorbic acid, 1.5g sodium chloride in the compound colour protecting liquid of every 100mL.
In the described step (2), with blanching 6min in the compound colour protecting liquid of 75 ℃ of the wheat seeding immersions after step (1) cleaning, with the wheat seeding screen filtration, water flushing again is cooled to room temperature after the blanching.
In the described step (3), the wheat seeding that step (2) is cooled to room temperature moves in the disintegrating machine, and add water and carry out crushing and beating, the wheat seeding juice of must pulling an oar, wherein, the mass ratio of wheat seeding and water is 1:6.
In the described step (4), the wheat seeding juice of will pulling an oar filters, and gets just filter filtrate and just filter filter residue, and just filter residue sieves after press filtration, gets secondary filtrate and first filter residue, and just filtrate and secondary filtrate merge, the filtrate of winning.
In the described step (4), adopt the 50-300 eye mesh screen to pull an oar wheat seeding juice is filtered.
In the described step (6), homogeneous wheat seeding juice is carried out spray-drying, get instant wheat seedling powder, wherein, spray-dired EAT is 180 ℃, and feed rate is 260mL/h, and leaving air temp is 65 ℃, and atomisation pressure is 0.3MPa.
In the described step (6), homogeneous wheat seeding juice is carried out spray-drying, get instant wheat seedling powder, instant wheat seedling powder is adopted vacuum foil sealing packing.
First filter residue that step (4) is obtained is behind-50 ℃ of freezing 6-10h, and under-20 ℃, the condition of 2-10Pa, lyophilization 24h pulverizes again, gets wheat seeding fiber powder again.
First filter residue that step (4) is obtained is behind-50 ℃ of freezing 6-10h, and under-20 ℃, the condition of 2-10Pa, magnificent dry 24h pulverizes again, gets wheat seeding fiber powder, and wheat seeding fiber powder is adopted vacuum foil sealing packing again.
First filter residue that step (4) is obtained is behind-50 ℃ of freezing 6-10h, and under-20 ℃, the condition of 2-10Pa, lyophilization 24h pulverizes again, crosses the 50-300 mesh sieve, gets wheat seeding fiber powder again.
Adopt the instant wheat seedling powder of the processing method preparation of aforementioned wheat seeding.
Adopt the wheat seeding fiber powder of the processing method preparation of aforementioned wheat seeding.
The processing method of wheat seeding provided by the invention comprises the steps: preliminary treatment, protects look, making beating, filtration, homogeneous, spray-drying.Wheat seeding among the present invention can make the careless fishy smell of wheat seeding obviously reduce through after protecting the look step, even disappears, and can not occur the careless fishy smell of wheat seeding in the prepared instant wheat seedling powder; Simultaneously, can the original color and luster of better protection wheat seeding, and color and luster is stable, through after the spray-drying and colour-fast in the later stage normal temperature storage process.
Simultaneously, the present invention increases the compound look that protects of blanching and operates on spray-dired basis, by adopting compound colour protecting liquid in conjunction with semi-scalding, can effectively reduce blanching temperature, and maximization reduces the destruction of the functional components in the wheat seeding; By the combination of compound colour protecting liquid and semi-scalding, more be conducive to remove original careless fishy smell in the wheat seeding, keep at the product that makes preparation under the prerequisite of original wheat seeding color and luster, make slightly delicate fragrance of product, significantly improve product quality.With Chinese patent CN00119778.9(powder of wheat seedling juice preparation technology) 145 ~ 165 ℃ of heated-air dryings of employing, cause the forfeiture of oxidizing brown stain and nutritional labeling easily, the quality that has a strong impact on product is compared, the present invention protects the combination of look by compound colour protecting liquid and blanching, can effectively reduce heat iron temperature and time.The oxidizing ferment that contains high-load in the wheat seeding, the reduction of heat iron temperature and time can make the functional component in the wheat seeding be maximized reservation.
The preparation method of the Chinese patent CN200710134404.X(anti-stick wall spray desiccation composite solid fruit and vegetable beverage of control) in, need to add drying aid, the anticaking agent of different proportion, to solve the sticking wall problem of Juice when spraying, influenced the mouthfeel of final products, more limited the kind of final products, and its blanching temperature has greatly destroyed various enzymes and the functional components in the fruits and vegetables up to 95 ℃-98 ℃; Compare with this patent, the present invention adopts spray-drying, and only contain water in the homogeneous wheat seeding juice, spraying easily, prevented from caking and sticking wall, spray effect is good, does not wherein also contain materials such as drying aid, anticaking agent simultaneously, the product of final preparation is also safer, green, and is convenient to the later stage and uses as food ingredient.Simultaneously, spray-drying mode of the present invention also is different from fixedly beverage (the perhaps medicine electuary) processing, and the elder generation that adopts allocates spray technique again, but directly adopts homogeneous wheat seeding juice spray-drying, and spray effect is better.
The present invention can directly be prepared into instant wheat seedling powder, it is through the later stage allotment, can be made into different wheat seeding products, remedied the various shortcoming that the wheat seeding product exists, kept the most original nutritional labeling, color and luster and the local flavor of wheat seeding, allow the consumer under quick and easy situation, drink the fully natural green beverage of nutrition delicious food.Simultaneously, can be used as auxiliary material, join various food the inside, it is green to make food have a light wheat seeding, the nutrition that improves food simultaneously.
The present invention also makes the wheat seeding resource be fully utilized, not only prepare instant wheat seedling powder, but also adopt Freeze Drying Technique to prepare wheat seeding fiber powder the wheat seeding filter residue, and having kept the green of wheat seeding fiber on the one hand, water-fast functional components is also kept when wheat seeding juice is squeezed the juice simultaneously.Simultaneously, adopt Freeze Drying Technique to make the functional components that wherein is incorporated in the wheat seeding cellulose also be kept its functional activity.Contain abundant insoluble diedairy fiber in this wheat seeding fiber powder, have the wriggling that increases enteron aisle, adjust effects such as microorganism species, it can be used as the auxiliary material of Flour product food processings such as steamed bun, bread, noodles, biscuit, increase the wherein content of insoluble diedairy fiber, improve color and luster simultaneously.
The present invention adopts homogeneous wheat seeding juice directly to spray, and spray effect is good after the more traditional allotment of its spray effect, sticking wall, and powder disperses.Simultaneously, the present invention directly is prepared into instant wheat seedling powder, can match with other components, and after heterogeneous body wheat seeding juice and the allotment of other components, carry out spray-drying again; The applicant tests allocating the back spraying simultaneously, the discovery spray effect is relatively poor, and stop up shower nozzle easily, may with wheat seeding in water-soluble component more, after allotments such as employing sucrose, be prone to precipitation, phenomenons such as flocculation are relevant, are not suitable for wheat seeding juice is allocated as spraying again after the various types of beverages so the present patent application people thinks.The present invention adopts the instant wheat seedling powder of wheat seeding preparation, it is the brand-new solid beverage of a kind of similar " instant coffee ", the present invention can fully keep original nutritional labeling in the wheat seeding, as rich soluble in the wheat seeding and insolubility dietary fiber, protein, mineral matter, vitamin etc., and other compositions favourable to health, as total phenol, flavones, forulic acid, superoxide dismutase materials such as (SOD), that the product that finally obtains has is anti-oxidant, hypoglycemic, the effect of reducing blood lipid, aspect such as anti-ageing, anticancer.
In sum, the present invention can the balanced diet structure, and balancing human body nutrition provides human body desired nutritional every day comprehensively, and prevention and the treatment of health and modern civilization disease had important function.The product of the present invention's preparation can be removed original careless fishy smell in the wheat seeding and make slightly delicate fragrance of product, fully keep original nutritional labeling in the wheat seeding simultaneously, that the product that obtains has is anti-oxidant, hypoglycemic, the effect of reducing blood lipid, aspect such as anti-ageing, anticancer, is convenient to the later stage again to be allocated as differently flavoured product.Simultaneously, the filter residue of generation also can be used as the food auxiliary material, increases its dietary fiber content, adjusts food color.The present invention has important value for the intensive processing utilization of wheat seeding, and product has the vast market potentiality.
The specific embodiment
Disclosed all features in this specification, or the step in disclosed all methods or the process except mutually exclusive feature and/or step, all can make up by any way.
Disclosed arbitrary feature in this specification is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or the similar characteristics.
Embodiment 1
(1) preliminary treatment: select growth about 45 days, length is that the new fresh and tender wheat seeding of 25 ~ 30cm is raw material, phenomenons such as nothing is rotted, jaundice, moth.Cut from about the liftoff 3cm with cutter and to cut off, remove impurity and sandy soil, immerse in the clear water and wash, water is rinsed well, drain the water and cut growth be that the 2cm section is standby, the time of each link will shorten as far as possible in the whole operation process, in order to avoid before protecting look brown stain takes place, influence following process.
(2) protect look: with blanching 6min in the compound colour protecting liquid of 75 ℃ of the rapid immersions of pretreated wheat seeding, with passive oxidation enzymatic activity and the careless fishy smell of removal, simultaneously, prevent in the process that the generation enzymatic browning of being heated influences product quality.Wherein, contain 0.03g citric acid, 0.07g ascorbic acid, 1.5g sodium chloride in the compound colour protecting liquid of every 100mL.Wheat seeding screen filtration behind the look is protected in blanching, and the water flushing is cooled to room temperature.
(3) making beating: the wheat seeding that will be cooled to room temperature moves in the high-speed tissue mashing machine, adds water and carries out crushing and beating, the wheat seeding juice of must pulling an oar.Wherein, being cooled to the wheat seeding of room temperature and the mass ratio of water is 1:6, and namely solid-liquid ratio is 1:6.
(4) filter: the wheat seeding juice of will pulling an oar filters with 150 eye mesh screens, gets just filter filtrate and just filter filter residue, and just filter residue is crossed 150 mesh sieves after press filtration, gets secondary filtrate and first filter residue, and just filtrate and secondary filtrate merge, the filtrate of winning.
(5) homogeneous: first filtrate is poured in the modified homogenizer, is to carry out high-pressure homogeneously twice under 60 ~ 70 ℃ in temperature, and pressure is 20MPa for the first time, and pressure is 25MPa for the second time, and twice homogenizing time respectively is 5min.The purpose of homogeneous is to prevent product layering, precipitation, makes wheat seeding juice finer and smoother, is conducive to the stable of end product quality and local flavor.
(6) spray-drying: homogeneous wheat seeding juice is carried out spray-drying, get instant wheat seedling powder, wherein, spray-dired EAT is 180 ℃, and the feed rate of homogeneous wheat seeding juice is 260mL/h, and solid-liquid ratio is 1:6, and leaving air temp is 65 ℃, and atomisation pressure is 0.3MPa.Instant wheat seedling powder is taken out oxygen, filled nitrogen with aluminizer bag vacuum, lucifuge, packing.
Take by weighing instant wheat seedling powder 6.5 grams (butt) in the present embodiment, as an independent packaging, add after 60 ~ 70 ℃ warm boiling water 100mL brews, namely drinkable.
With first filter residue behind-50 ℃ of freezing 10h, again under-20 ℃, the condition of 10Pa, the dry 24h of vacuum sublimation, thereby finish freeze drying.After the freeze drying, pulverize, adopt vacuum foil sealing packing again, namely get wheat seeding fiber powder.
The main function composition that contains in the instant wheat seedling powder to embodiment 1 preparation is measured
1) measures total phenol
Wheat seeding juice instant solid beverage powder obtains alcohol extract with the ultrasonic extraction of ethanol, is the stronger material of polarity mostly in alcohol extract.This experiment is standard items with the gallic acid, measures total phenol content in the wheat seeding juice instant solid beverage.
Instant wheat seedling powder total phenol content measurement result is as follows: absorbance is 0.054, and total phenol mass concentration is 0.00048mg/mL, and total phenol content is 0.24%.
2) measure general flavone
Phenolic compound mainly comprises materials such as flavonoids, is standard items with the rutin, measures general flavone content in the wheat seeding juice instant solid beverage.
Instant wheat seedling powder determination of total flavonoids result is as follows: absorbance is 0.012, and total phenol mass concentration is 0.00057mg/mL, and total phenol content is 0.036%.
3) measure forulic acid
To ferulaic acid content in the instant wheat seedling powder and replication 3 times, get its mean value, the result shows that average content is 0.24 μ g/mL.
4) instant wheat seedling powder to hexichol for bitter taste hydrazine free radical (DPPH) removing ability
The antioxidation activity of the removing ability reaction measured object of DPPH, and easy and simple to handle quick, sensitive.
The domestic report of not seeing at present about wheat seeding juice instant solid beverage removing DPPH free radical ability, but there are some researches show, wheat seeding juice has higher non-oxidizability, and its TAC is BHT and alpha-tocopherol 4.9 times and 7.2 times, is 36.74% to the inhibiting rate of DPPH free radical.Experimental result shows that the instant wheat seedling powder of embodiment 1 preparation reaches 52.1% to the clearance rate of DPPH free radical.
5) mensuration of other radical scavenging activities
Instant wheat seedling powder is to hydroxy radical (OH), ultra-oxygen anion free radical (O
2 -) both removing ability is respectively: 30%, 75.25%.
The instant wheat seedling powder that present embodiment is prepared protect chromatic effect the best.Result of the test shows: wheat seeding juice instant solid beverage has stronger antioxidation in vitro ability, and DEVELOPMENT PROSPECT is wide.
Embodiment 2
(1) preliminary treatment: select growth about 60 days, length is that the new fresh and tender wheat seeding of 25 ~ 30cm is raw material, phenomenons such as nothing is rotted, jaundice, moth.Cut from about the liftoff 3cm with cutter and to cut off, remove impurity and sandy soil, immerse in the clear water and wash, water is rinsed well, drain the water and cut growth be that the 1.5cm section is standby, the time of each link will shorten as far as possible in the whole operation process, in order to avoid before protecting look brown stain takes place, influence following process.
(2) protect look: with blanching 3min in the compound colour protecting liquid of 85 ℃ of the rapid immersions of pretreated wheat seeding, with passive oxidation enzymatic activity and the careless fishy smell of removal, simultaneously, prevent in the process that the generation enzymatic browning of being heated influences product quality.Wherein, contain 0.01g citric acid, 0.03g ascorbic acid, 0.5g sodium chloride in the compound colour protecting liquid of every 100mL.Wheat seeding screen filtration behind the look is protected in blanching, and the water flushing is cooled to room temperature.
(3) making beating: the wheat seeding that will be cooled to room temperature moves in the high-speed tissue mashing machine, adds water and carries out crushing and beating, the wheat seeding juice of must pulling an oar.Wherein, being cooled to the wheat seeding of room temperature and the mass ratio of water is 1:7, and namely solid-liquid ratio is 1:7.
(4) filter: the wheat seeding juice of will pulling an oar filters with 150 eye mesh screens, win filtrate and first filter residue.
(5) homogeneous: first filtrate is poured in the modified homogenizer, is to carry out high-pressure homogeneously twice under 70 ℃ in temperature, and pressure is 25MPa for the first time, and homogenizing time is 3min, and pressure is 22MPa for the second time, and homogenizing time is 8min.The purpose of homogeneous is to prevent product layering, precipitation, makes wheat seeding juice finer and smoother, is conducive to the stable of end product quality and local flavor.
(6) spray-drying: homogeneous wheat seeding juice is carried out spray-drying, get instant wheat seedling powder, wherein, spray-dired EAT is 185 ℃, and the feed rate of homogeneous wheat seeding juice is 250mL/h, and solid-liquid ratio is 1:7, leaving air temp is 75 ℃, and atomisation pressure is 0.45MPa.Instant wheat seedling powder is taken out oxygen, filled nitrogen with aluminizer bag vacuum, lucifuge, packing.
Take by weighing instant wheat seedling powder 6.5 grams (butt) in the present embodiment, as an independent packaging, add after 60 ~ 70 ℃ warm boiling water 100mL brews, namely drinkable.
With first filter residue behind-50 ℃ of freezing 6h, again under-20 ℃, the condition of 5Pa, the dry 24h of vacuum sublimation, thereby finish freeze drying.After the freeze drying, pulverize, adopt vacuum foil sealing packing again, namely get wheat seeding fiber powder.The instant wheat seedling powder that present embodiment is prepared and wheat seeding fiber powder to protect chromatic effect better.
Embodiment 3
(1) preliminary treatment: select growth about 40 days, length is that the new fresh and tender wheat seeding of 25 ~ 30cm is raw material, phenomenons such as nothing is rotted, jaundice, moth.Cut from about the liftoff 3cm with cutter and to cut off, remove impurity and sandy soil, immerse in the clear water and wash, water is rinsed well, drain the water and cut growth be that the 2cm section is standby, the time of each link will shorten as far as possible in the whole operation process, in order to avoid before protecting look brown stain takes place, influence following process.
(2) protect look: with blanching 8min in the compound colour protecting liquid of 70 ℃ of the rapid immersions of pretreated wheat seeding, with passive oxidation enzymatic activity and the careless fishy smell of removal, simultaneously, prevent in the process that the generation enzymatic browning of being heated influences product quality.Wherein, contain 0.05g citric acid, 0.07g ascorbic acid, 2.2g sodium chloride in the compound colour protecting liquid of every 100mL.Wheat seeding screen filtration behind the look is protected in blanching, and the water flushing is cooled to room temperature.
(3) making beating: the wheat seeding that will be cooled to room temperature moves in the high-speed tissue mashing machine, adds water and carries out crushing and beating, the wheat seeding juice of must pulling an oar.Wherein, being cooled to the wheat seeding of room temperature and the mass ratio of water is 1:4, and namely solid-liquid ratio is 1:4.
(4) filter: the wheat seeding juice of will pulling an oar filters with 300 eye mesh screens, win filtrate and first filter residue.
(5) homogeneous: first filtrate is poured in the modified homogenizer, is to carry out high-pressure homogeneously twice under 60 ℃ in temperature, and pressure is 20MPa for the first time, and homogenizing time is 10min, and pressure is 22MPa for the second time, and homogenizing time is 6min.The purpose of homogeneous is to prevent product layering, precipitation, makes wheat seeding juice finer and smoother, is conducive to the stable of end product quality and local flavor.
(6) spray-drying: homogeneous wheat seeding juice is carried out spray-drying, get instant wheat seedling powder, wherein, spray-dired EAT is 170 ℃, and the feed rate of homogeneous wheat seeding juice is 265mL/h, and solid-liquid ratio is 1:4, leaving air temp is 55 ℃, and atomisation pressure is 0.20MPa.Instant wheat seedling powder is taken out oxygen, filled nitrogen with aluminizer bag vacuum, lucifuge, packing.
Take by weighing instant wheat seedling powder 6.5 grams (butt) in the present embodiment, as an independent packaging, add after 60 ~ 70 ℃ warm boiling water 100mL brews, namely drinkable.
With first filter residue behind-50 ℃ of freezing 8h, again under-20 ℃, the condition of 8Pa, the dry 24h of vacuum sublimation, thereby finish freeze drying.After the freeze drying, pulverize, adopt vacuum foil sealing packing again, namely get wheat seeding fiber powder.The instant wheat seedling powder that present embodiment is prepared and wheat seeding fiber powder to protect chromatic effect better.
The present invention is not limited to the aforesaid specific embodiment.The present invention expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.
Claims (10)
1. the processing method of a wheat seeding is characterized in that, comprises the steps:
(1) preliminary treatment: getting wheat seeding is raw material, cleans up, standby;
(2) protect look: blanching 2-8min in the compound colour protecting liquid that the wheat seeding immersion after step (1) is cleaned is 70 ℃-85 ℃ with the wheat seeding screen filtration, is cooled to room temperature after the blanching;
(3) making beating: the wheat seeding that step (2) is cooled to room temperature moves in the disintegrating machine, and add water and carry out crushing and beating, the wheat seeding juice of must pulling an oar, wherein, the mass ratio of wheat seeding and water is 1:4-8;
(4) filter: the wheat seeding juice of will pulling an oar filters, win filtrate and first filter residue;
(5) homogeneous: first filtrate is poured in the modified homogenizer, is to carry out high-pressure homogeneously twice under 60 ~ 70 ℃ in temperature, and primary pressure is 20 ~ 25MPa, time is 3-10min, secondary pressure is 20 ~ 25MPa, and the time is 3-10min, gets homogeneous wheat seeding juice;
(6) spray-drying: homogeneous wheat seeding juice is carried out spray-drying, get instant wheat seedling powder, wherein, spray-dired EAT is 170 ℃-190 ℃, and feed rate is 250mL/h-265mL/h, and solid-liquid ratio is 1:4-1:8, leaving air temp is 55 ℃-75 ℃, and atomisation pressure is 0.15MPa-0.5MPa;
In the described step (2), contain 0.01-0.05g citric acid, 0.02-0.08g ascorbic acid, 0.5-2.5g sodium chloride in the compound colour protecting liquid of every 100mL.
2. according to the processing method of the described wheat seeding of claim 1, it is characterized in that in the described step (1), choosing growth time is 30-60 days, length be the wheat seeding of 25 ~ 30cm as raw material, clean up, be cut into the segment of 1-2cm, standby.
3. according to the processing method of the described wheat seeding of claim 1, it is characterized in that, in the described step (2), with blanching 6min in the compound colour protecting liquid of 75 ℃ of the wheat seeding immersions after step (1) cleaning, with the wheat seeding screen filtration, be cooled to room temperature after the blanching.
4. according to the processing method of the described wheat seeding of claim 1, it is characterized in that, in the described step (2), contain 0.03g citric acid, 0.07g ascorbic acid, 1.5g sodium chloride in the compound colour protecting liquid of every 100mL.
5. according to the processing method of the described wheat seeding of claim 1, it is characterized in that, in the described step (3), the wheat seeding that step (2) is cooled to room temperature moves in the disintegrating machine, adds water and carries out crushing and beating, the wheat seeding juice of must pulling an oar, wherein, the mass ratio of wheat seeding and water is 1:6.
6. according to the processing method of each described wheat seeding of claim 1-5, it is characterized in that, in the described step (4), wheat seeding juice after the making beating is filtered, get just filter filtrate and the first filter residue of filtering, just filter residue sieves after press filtration, gets secondary filtrate and first filter residue, just filtrate and secondary filtrate merge, the filtrate of winning.
7. according to the processing method of each described wheat seeding of claim 1-5, it is characterized in that, in the described step (6), homogeneous wheat seeding juice is carried out spray-drying, get instant wheat seedling powder, wherein, spray-dired EAT is 180 ℃, feed rate is 260mL/h, and leaving air temp is 65 ℃, and atomisation pressure is 0.3MPa.
8. according to the processing method of each described wheat seeding of claim 1-7, it is characterized in that first filter residue that step (4) is obtained is behind-50 ℃ of freezing 6-10h, again under-20 ℃, the vacuum condition of 2-10Pa, lyophilization 24h pulverizes behind the sample drying again, gets wheat seeding fiber powder.
9. according to the instant wheat seedling powder of the processing method of the described wheat seeding of claim 1-8 preparation.
10. the wheat seeding fiber powder of the processing method of described wheat seeding preparation according to Claim 8.
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