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Homogeneous composite solvent and method for preparing dephenolized cotton seed protein by one-step process

A technology of dephenolized gossypol protein and compound solvent, which is applied in the fields of peptide preparation, chemical instruments and methods, organic chemistry, etc., can solve the problems of poor extraction efficiency of oil and gossypol, poor quality of cottonseed protein, and lack of market competitiveness. , to achieve high product extraction rate, improve product extraction rate, reduce equipment and cost

Active Publication Date: 2015-07-22
邯郸晨光植物蛋白有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of the one-step method is that the equipment investment is small, but because two immiscible solvents are used as the extraction system, the extraction efficiency of oil and gossypol is poor during the extraction process, the product extraction rate is low, and the production cost is high. Poor protein quality and lack of market competitiveness also limit the application of this process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: The method for preparing dephenolized cottonseed protein adopts the following composite solvent and process steps.

[0023] Composite solvent: methanol: ethyl acetate = 1:9 (volume), just stir and mix well.

[0024] Process steps: Cotton embryos are softened and dried by a dryer. The softened and dried cotton embryos have a thickness of 0.2mm, a moisture content of 3.9wt%, and a temperature of 95°C. The obtained cotton embryos enter the extractor. In the extractor, the composite solvent is added according to the mass volume ratio of the material to the composite solvent of 1:0.5, and the cotton embryo flakes are extracted. The extraction temperature is 60°C, and the extraction time is 120min. The extracted cottonseed meal is dried and pulverized by a disc dryer and steamed off-line to obtain dephenolized cottonseed protein; the extract is concentrated, alkali refined, separated, washed with water, and desolventized to obtain cottonseed oil.

[0025] After...

Embodiment 2

[0026] Embodiment 2: The method for preparing dephenolized cottonseed protein adopts the following composite solvent and process steps.

[0027] Composite solvent: ethanol: ether: water = 3:3.0:0.3 (volume), just stir and mix.

[0028] Process steps: Cotton embryos are softened and dried by a dryer. The softened and dried cotton embryos have a thickness of 0.65mm, a moisture content of 3wt%, and a temperature of 45°C. The obtained cotton embryos enter the extractor. In the extractor, the composite solvent is added according to the mass volume ratio of the material and the composite solvent is 1:1.4, and the cotton embryo flakes are extracted. The extraction temperature is 20°C, and the extraction time is 500min. The extracted cottonseed meal is dried and pulverized by a disc dryer and steamed off-line to obtain dephenolized cottonseed protein; the extract is concentrated, alkali refined, separated, washed with water, and desolventized to obtain cottonseed oil.

[0029] The re...

Embodiment 3

[0030] Embodiment 3: The method for preparing dephenolized cottonseed protein adopts the following composite solvent and process steps.

[0031] Composite solvent: methanol: ethyl acetate: water = 3:2:0.6 (volume), just stir and mix.

[0032] Process steps: Cotton embryos are softened and dried by a dryer. The softened and dried cotton embryos have a thickness of 0.35mm, a moisture content of 7.0wt%, and a temperature of 69°C. The obtained cotton embryos enter the extractor. In the extractor, the composite solvent is added according to the mass volume ratio of the material and the composite solvent is 1:1.5, and the cotton embryo flakes are extracted. The extraction temperature is 45°C, and the extraction time is 150min. The extracted cottonseed meal is dried and pulverized by a disc dryer and steamed off-line to obtain dephenolized cottonseed protein; the extract is concentrated, alkali refined, separated, washed with water, and desolventized to obtain cottonseed oil.

[003...

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Abstract

The invention discloses a homogeneous composite solvent and method for preparing dephenolized cotton seed protein by a one-step process. The homogeneous composite solvent is mainly composed of low-molecular ether or low-molecular ester and low-molecular alcohol in a volume ratio of (2-147):3, and all the components are mutually soluble. The composite solvent adopts the homogeneous mutually-soluble system composed of the low-molecular ether or low-molecular ester, low-molecular alcohol and water to perform one-step extraction on the cotton seed; and under the interactions among the solvents, the grease, gossypol and aflatoxin are effectively extracted, thereby lowering the protein denaturation in the extraction process and enhancing the protein quality. The solvent can be volatilized from the linter pulp more and recovered more easily, thereby greatly lowering the solvent consumption. Therefore, the composite solvent can effectively enhance the product extraction rate of the one-step extraction process, enhance the product quality and effectively lower the cotton seed extraction equipment and cost. The method has the advantages of short technique, less equipment, low cost and high product extraction rate, and is simple to operate.

Description

technical field [0001] The invention relates to a cottonseed extraction solvent, in particular to a homogeneous composite solvent and method for preparing dephenolized cottonseed protein in one step. Background technique [0002] my country is a major cotton-producing country in the world. Cottonseed resources are very rich. Cottonseed is rich in protein and oil resources. The nutritional value of protein contained in cottonseed is close to that of soybean protein. It is a good protein feed resource, and cottonseed The price of protein is lower than that of soybean meal and fish meal. It can be used to replace feed protein sources such as soybean meal and fish meal. It can not only reduce the import of soybean meal and fish meal, save foreign exchange, but also promote the development of planting and breeding industries. Therefore, cottonseed protein has broad market prospects and strong competitive advantages. [0003] At present, there are mainly two processes for cottonsee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07K1/30
Inventor 卢庆国连运河宋伟光钱建瑞王英袁新英
Owner 邯郸晨光植物蛋白有限公司
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