CN103859140B - A kind of low temperature extracts the technique of soybean protein isolate - Google Patents
A kind of low temperature extracts the technique of soybean protein isolate Download PDFInfo
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- CN103859140B CN103859140B CN201310030967.XA CN201310030967A CN103859140B CN 103859140 B CN103859140 B CN 103859140B CN 201310030967 A CN201310030967 A CN 201310030967A CN 103859140 B CN103859140 B CN 103859140B
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Abstract
The invention discloses the technique that a kind of low temperature extracts soybean protein isolate, by the low temperature process water through preliminary treatment by weight (10-15): 1 mixes in extractor with raw material dregs of beans, then certain hour is soaked after the pH value of feed liquid being adjusted to 8.0-9.0 by NaOH solution, under 25 DEG C ~ 35 DEG C Extracting temperature, by the mixing speed of 60-70 rev/min, constantly stir and extract soybean protein isolate.After adopting low temperature extraction process of the present invention, protein extraction workshop section does not re-use high-temperature steam, reduces energy consumption, avoids the sex change Sum decomposition of soybean protein isolate in leaching process, improve the quality of product, the extraction rate reached of soybean protein isolate is to more than 86%.
Description
Technical field
The present invention relates to a kind of extraction process of soybean protein isolate, be specifically related to the technique that a kind of low temperature extracts soybean protein isolate, belong to soybean further process field.
Background technology
Soybean protein isolate is as a kind of high-purity soybean protein product produced from defatted soybean meal, and its protein content, more than 90%, is the product that in soy protein products, protein content is the highest.There is very high trophism, be rich in the multiple essential amino acid of needed by human body, also there is the functional characteristics such as good gelation, emulsibility, dispersiveness, water-retaining property, Oil keeping, be widely used in the food such as meat products, dairy products, beverage, cake.Be specially adapted to the medical meals of middle-aged and old health food, infant foods and some diseases, partly or entirely can replace animal protein, fully supplement the protein of needed by human body.
At present both at home and abroad the production technology of soybean protein isolate generally adopts alkali extraction-acid precipitation: raw material dregs of beans to be heavyly separated through the molten extraction of alkali, acid, in and the operation such as sterilization, spraying dry produce soybean protein isolate product.The traditional extraction technique of soybean protein isolate generally adopts the Extracting temperature of 40 DEG C ~ 60 DEG C, need prepare diffusion water, the therefore more difficult control of Extracting temperature by the mode adopting high-temperature steam to be heated by cold water, technology stability is poor, and consume a large amount of energy, add production cost.In addition, Extracting temperature is too high, also can cause slight sex change and the excessive decomposition of protein, reduces the functional and local flavor of product.
Summary of the invention
The object of the invention is to the shortcomings and deficiencies overcoming above prior art, the soybean protein isolate extraction process that a kind of extraction process is stablized, energy consumption is low, production cost is low is provided.
For achieving the above object, the present invention is achieved through the following technical solutions:
A kind of low temperature extracts the technique of soybean protein isolate, comprise the following steps: (1) by the low temperature process water through preliminary treatment directly with raw material dregs of beans by weight (10 ~ 15): 1 mixes in extractor, and carry out feed liquid immersion after material liquid pH value being adjusted to 8.0 ~ 9.0 by NaOH solution, the protein of raw material dregs of beans is fully dissolved in alkali lye; (2) feed liquid in extractor, at 25 DEG C ~ 35 DEG C, constantly stirs and extracts soybean protein isolate;
Further: low temperature process water described in step (1) is the phreatic water after filtering and impurity removing, temperature is 25 DEG C ~ 35 DEG C;
Preferably: the feed liquid soak time described in step (1) is 10 ~ 30min;
Preferably: the mixing speed described in step (2) is 60-70 rev/min.
The present invention compared with prior art, beneficial effect is mainly reflected in: traditional extraction technique needs to heat diffusion water, albumen steam consumption per ton is 0.5 ~ 1.0 ton, and the coefficient of stabilization of Extracting temperature only has about 70%, and after adopting low temperature extraction process of the present invention, protein extraction workshop section does not re-use high-temperature steam, reduce steam energy consumption, save cost, and, control without the need to carrying out operation again in leaching process, the coefficient of stabilization of Extracting temperature reaches more than 99%.In addition, because the present invention takes low temperature extraction process, prevent the sex change Sum decomposition of soybean protein isolate in leaching process, improve the quality of product, finally, protein extracting ratio reaches more than 86%.
Detailed description of the invention
Below in conjunction with embodiment, the inventive method is conducted further description, but the present invention is not limited to following embodiment.
Embodiment 1
(1) DEG C low temperature process water of 28 after filtering and impurity removing is directly mixed with raw material dregs of beans by weight the ratio for 11:1 in extractor, and after material liquid pH value being adjusted to 8.5 by NaOH solution, soak 25min;
(2) feed liquid in extractor, carries out protein extraction, constantly stirs in leaching process at 30 DEG C, and mixing speed is 65 revs/min, and extract 15min, soybean protein isolate recovery rate is 88.7%.
Claims (1)
1. the technique of a low temperature extraction soybean protein isolate, it is characterized in that comprising the following steps: (1) by the low temperature process water through preliminary treatment directly with raw material dregs of beans by weight (10 ~ 15): 1 mixes in extractor, and carry out feed liquid immersion after material liquid pH value being adjusted to 8.0 ~ 9.0 by NaOH solution, the albumen of raw material dregs of beans is fully dissolved in alkali lye; (2) feed liquid in extractor, at 25 DEG C ~ 35 DEG C, constantly stirs and extracts soybean protein isolate; Wherein:
Low temperature process water described in step (1) is the phreatic water after filtering and impurity removing, and temperature is 25 DEG C ~ 35 DEG C;
Feed liquid soak time described in step (1) is 10 ~ 30min;
Mixing speed described in step (2) is 60-70 rev/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310030967.XA CN103859140B (en) | 2013-01-28 | 2013-01-28 | A kind of low temperature extracts the technique of soybean protein isolate |
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| CN201310030967.XA CN103859140B (en) | 2013-01-28 | 2013-01-28 | A kind of low temperature extracts the technique of soybean protein isolate |
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| CN103859140A CN103859140A (en) | 2014-06-18 |
| CN103859140B true CN103859140B (en) | 2015-08-26 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104829734B (en) * | 2014-10-10 | 2017-06-13 | 沈阳市粮油食品科学研究所 | A kind of method of utilization dried thin mushroom production pigment, albumen, polysaccharide and dietary fiber |
| CN107198016A (en) * | 2017-05-19 | 2017-09-26 | 山东禹王生态食业有限公司 | A kind of extracting method of soybean protein isolate |
| CN113768031A (en) * | 2021-09-14 | 2021-12-10 | 临邑禹王植物蛋白有限公司 | Production method of pea protein with low content of volatile organic compounds |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1561787A (en) * | 2004-03-26 | 2005-01-12 | 中国农业大学 | Method for extracting soybean protein |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1561787A (en) * | 2004-03-26 | 2005-01-12 | 中国农业大学 | Method for extracting soybean protein |
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