Method for extracting sesame protein

A technology of sesame and protein, applied in the field of natural plant protein production, can solve the problems of high consumption of acid and alkali, environmental pollution, unpleasantness, etc., and achieve the effects of less environmental pollution, short extraction time and simple process.

Inactive Publication Date: 2010-05-12
WUHU TALENT NATURAL EXTRACT
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0006] Sesame protein is mainly alkali-soluble protein (67%), and its solubility is relatively large under alkaline conditions, so the basic method of extraction is alkali extraction and acid precipitation method. Separate and remove the insoluble substances in sesame, then adjust the pH value of the leachate to about 4.5 with edible hydrochloric acid, the protein is in the state of isoelectric point and coagulates and precipitates, and the finished sesame protein powder can be obtained after neutralization, pulping and drying. The highest protein content can reach 90%, but the alkaline extraction and acid precipitation process generally has the problem of high ash content and dark color of the product, the main reason is that some organic acids such as citric acid and pyroglutamic acid are left in the process of alkaline extraction, acid precipitation and neutralizati

Method used

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  • Method for extracting sesame protein
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Examples

Experimental program
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Example Embodiment

[0020] Example 1

[0021] a) Color sorting process: the raw sesame seeds go through the color sorting process, so that the weight content of other variegated sesame seeds is less than 1%. There are too many variegated sesame seeds, which directly affects the taste of sesame;

[0022] b) The first winnowing process: use a winnowing machine to winnow sesame to remove imperfect grains such as immature grains, broken grains, and insect-eaten grains;

[0023] c) Washing process: the winnowed sesame is washed with tap water to remove the dirt and dust in the sesame;

[0024] d) Drying process: drying the washed sesame seeds at 90°C for 45 minutes;

[0025] e) Baking process: the dried sesame seeds are baked at 198℃ for 2 hours. The baking temperature is very important. If the temperature is too low, the amount of sesame protein extracted will be significantly reduced. If the temperature is too high, the sesame protein will be contained in the sesame protein. The impurity content is significa...

Example Embodiment

[0029] Example 2:

[0030] Except for h) the extraction process is the following process, the rest is the same as in Example 1.

[0031] Throw 2kg of sesame powder, when the extraction pressure is 40MPa, the separation pressure is 6MPa, the extraction temperature is 40℃, the separation temperature is 35℃, CO 2 After extraction for 2 hours at a flow rate of 0.62 L / min, 1640 g of sesame protein powder was obtained, with a protein content of 23.2%.

Example Embodiment

[0032] Example 3:

[0033] Except for h) the extraction process is the following process, the rest is the same as in Example 1.

[0034] Throw 2kg of sesame powder, when the extraction pressure is 35MPa, separation pressure is 6MPa, extraction temperature is 30℃, separation temperature is 40℃, CO 2 After 3 hours of extraction at a flow rate of 0.62 L / min, 1380 g of sesame protein powder was obtained, with a protein content of 28.3%.

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Abstract

The invention discloses a method for extracting sesame protein, which comprises a preprocessing procedure and an extraction procedure. The method is characterized in that: in the extraction procedure, a supercritical carbon dioxide is used as a solvent and the extraction conditions are that: extraction pressure is between 7 and 50 MPa; extraction temperature is between 32 and 45 DEG C; desorption temperature is between 30 and 75 DEG C; desorption pressure is between 4 and 8 MPa; and extraction time is between 0.5 and 5 hours. Compared with the sesame protein extracting by the prior art, the sesame protein can wholly keep the original flavor and mouthfeel of sesame; and the flavor and the mouthfeel of a sesame protein product are obviously superior to those of the sesame protein product prepared by the current alkali extraction and acid precipitation method.

Description

Technical field: [0001] The invention belongs to the production technology of natural plant protein, in particular to a method for extracting sesame protein from sesame. Background technique: [0002] Sesame is an annual herb belonging to the family Linaceae. It is one of the oldest oil crops and is known as the "Queen" of oil crops because of its high oil content. Sesame has a long history of planting in my country [0003] Sesame has extremely high nutritional value, has a broad consumer group, and has a wide range of uses. The main component of sesame is oil, with a content of about 50%, followed by protein, which accounts for about 20%. In addition, it also contains various vitamins, carbohydrates, Minerals, dietary fiber. [0004] Plant protein is easily digested and absorbed by the human body, does not contain cholesterol, and is complementary to animal protein in terms of amino acid composition. It has anti-tumor, cholesterol-lowering effects, lowers blood pressure...

Claims

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Application Information

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IPC IPC(8): A23J1/14
Inventor 汪飚曹文豪董宁渊
Owner WUHU TALENT NATURAL EXTRACT
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