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Combined extraction process of pea starch and protein

A pea starch and combined extraction technology, which is applied in the field of starch processing, can solve the problems of high production cost, low recovery rate, non-compliance, etc., and achieve the effects of low production cost, high production efficiency and avoiding waste

Active Publication Date: 2013-06-12
HENAN HUANGGUO GRAIN COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] When some domestic manufacturers use peas as raw materials to produce vermicelli, although they recover protein from wastewater, the recovery rate is low and the quality is poor, and it is mainly used as feed
The ultrafiltration reverse osmosis technology developed abroad in the 1970s is used to treat the waste water produced from pea starch, which can remove sugar compounds and harmful factors with small molecular weights in the waste liquid, and produce protein powder with a content of about 90.5%. The production cost is expensive and does not meet the status quo of domestic production

Method used

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  • Combined extraction process of pea starch and protein
  • Combined extraction process of pea starch and protein
  • Combined extraction process of pea starch and protein

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A joint extraction process of pea starch and protein, the process comprises the following steps:

[0029] Step 1. Soak, soak the peas after removing impurities until they fully absorb water and swell, and peel them for later use;

[0030] Step 2, grinding, grinding the peeled peas to obtain pea slurry, the mass ratio of peas and water in the grinding process is 1:8-9;

[0031] Step 3, leaching, the pea slurry after grinding is subjected to leaching reaction in a constant temperature heating agitator, and a NaOH solution with a concentration of 0.075mol / L is added to obtain a slurry with a material-to-liquid ratio of 1:18, and then, keep leaching The extraction temperature is 30°C, the extraction is stirred for 18 hours, and the extraction slurry is obtained; wherein, the ratio of solid to liquid is the ratio of the mass of the pea slurry to the volume of the NaOH solution;

[0032] Step 4, filtering, taking the extraction slurry, filtering it with a 100-120 mesh sieve ...

Embodiment 2

[0036] The difference between this example and Example 1 is that in step 3, the concentration of NaOH is 0.08mol / L, the solid-liquid ratio of the slurry is 1:24, the extraction temperature is 50°C, and the extraction temperature is 50°C. The stirring time was continued for 20 hours to obtain a leaching slurry.

[0037] Adopting the starch content determination and protein content determination methods commonly used in this field, combined with the comprehensive yield calculation method of pea starch and protein, the pea starch yield obtained is 75.0%, and the purity is 85.4% (dry basis); the pea protein yield is 58.9%, the purity is 78.4% (dry basis), and the comprehensive yield is 68.5%.

Embodiment 3

[0039] The difference between this example and Example 1 is that in step 3, the concentration of NaOH is 0.06mol / L, the solid-liquid ratio of the slurry is 1:18, the extraction temperature is 30°C, and the extraction temperature is 30°C. The stirring time was continued for 16 hours to obtain a leaching slurry.

[0040] Adopt the starch content determination and protein content determination method commonly used in this field, combine the comprehensive yield calculation method of pea starch and protein, the pea starch yield that obtains is 75.7%, and purity is 86.2% (dry basis); The pea protein yield is 59.6%, the purity is 78.9% (dry basis), and the comprehensive yield is 69.2%.

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Abstract

The invention provides a combined extraction process of pea starch and protein. The process comprises the following steps of taking the purified pea to soak and remove the peel, and then grinding, wherein the weight ratio of the pea quantity to the water quantity in the grinding process is 1 to 9; taking the grinded pea pulp, carrying out leaching reaction under the conditions that the concentration of NaOH solution is 0.075mol / L; the ratio of solid to liquid is 1 to 18; the temperature is 30 DEG C; and the agitating time is 18 hours; taking the leaching slurry to separate cellulose and pulp by a sieve, then carrying out centrifugal treatment, and separating to obtain upper protein solution and lower starch slurry; obtaining the pea starch from the lower starch slurry by washing, drying, crushing and filtering; and obtaining the pea protein from the upper protein solution by acid precipitation, centrifuging, washing and drying. By adopting the extraction process, the pea starch and the protein are obtained by combined extraction; the integrated yield of the pea starch and the protein is greatly improved; and the combined extraction process has the advantages of being simple in process, high in production efficiency, low in production cost, and reliable in production quality.

Description

technical field [0001] The invention belongs to the technical field of starch processing, and in particular relates to a joint extraction process of pea starch and protein. Background technique [0002] Starch is a renewable resource with abundant sources next to cellulose, and is an important source of human food. In addition to the food industry, starch is widely used in textiles, papermaking, medicine, petroleum, chemical and other fields. At present, most of the research on starch at home and abroad is concentrated on the modification of starch, and most of the research on native starch is concentrated on potato, corn, sweet potato, etc., but there are few reports on the research on bean starch. [0003] Bean starch has a wide range of uses in the food industry. It is the main additive for making ham and sausage, and it can also be used for making ice cream and ice cream. Because of its high amylose content, it has excellent properties such as high thermal viscosity, hi...

Claims

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Application Information

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IPC IPC(8): C08B30/04C08B30/06C08B30/10C07K1/30D21C5/00
Inventor 周兴伍曹杨杨俊生朱勇丁文平周子钞
Owner HENAN HUANGGUO GRAIN COMPANY
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