Technology for extracting potato protein through hot flocculence method

A technology of potato protein and potato protein powder, which is applied in the direction of protein food components, protein components of waste, protein composition of microorganisms, etc., to achieve the effect of less investment, high purity and quality, and high extraction rate

Inactive Publication Date: 2016-01-13
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of this invention is to solve the problems existing in the existing protein extraction technology, and to provide a process for extracting potato protein from potato starch processing and separation juice (process water) by thermal flocculation

Method used

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  • Technology for extracting potato protein through hot flocculence method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Separation of small granule starch and fine fiber: Use a built-in centripetal pump horizontal screw centrifuge to separate the mixture of small granule starch and fine fiber and potato protein juice in the potato processing starch process water. Potato processing starch process water intake is 30m 3 / h, extract the mixture of small granular starch and fine fiber at 6kg / m 3 ;The separated juice is used for protein separation;

[0031] (2) Separation of potato protein: add dilute sulfuric acid to the potato protein juice to adjust the pH value to 5.0, first use the spiral plate heat exchanger A and heat exchanger B to preheat, then use the direct steam heater to heat the temperature to 120 °C, and then pass Heat exchanger B recovers, preheats and cools down, and then separates through a horizontal screw centrifuge with a built-in centripetal pump, and the moisture content of the obtained wet potato protein is 80%; then continues to cool down to below 35°C through spi...

Embodiment 2

[0034] (1) Separation of small granule starch and fine fiber: add liquid defoamer (F-604) to the potato processing starch process water, the addition amount is 5mg / L, and use a built-in centripetal pump horizontal screw centrifuge to separate small granule starch and fine fiber Fine fiber mixture with potato protein juice. The water intake is 35m 3 / h, the amount of extracting small granular starch and fine fiber mixture is 6.2kg / m 3 ;The separated juice is used for protein separation;

[0035] (2) Separation of potato protein: add dilute hydrochloric acid to the potato protein juice to adjust the pH value to 4.8, first use the spiral plate heat exchanger A and heat exchanger B to preheat, and then use the direct steam heater to heat the temperature to 115 °C, and then Preheating and cooling through heat exchanger B, followed by separation through a horizontal screw centrifuge with a built-in centripetal pump, and the moisture content of the wet potato protein obtained is 81...

Embodiment 3

[0038] (1) Separation of small granule starch and fine fiber: add liquid defoamer (F-604) to the starch process water of potato processing, the addition amount is 8mg / L, and use a built-in centripetal pump horizontal screw centrifuge to separate small granule starch and fine fiber Fine fiber mixture with potato protein juice. The water intake is 40m 3 / h, the amount of extracting small granular starch and fine fiber mixture is 6.2kg / m 3 ;The separated juice is used for protein separation;

[0039] (2) Separation of potato protein: add acetic acid to the potato protein juice to adjust the pH value to 4.8, preheat with spiral plate heat exchanger A and heat exchanger B, and then use a direct steam heater to heat the temperature to 110°C, and then pass heat exchange Container B recovers, preheats and cools down, and then separates through a horizontal screw centrifuge with a built-in centripetal pump, and the moisture content of the obtained wet potato protein is 78%. Then con...

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Abstract

The invention provides a technology for extracting high-purity potato protein through a hot flocculence method. At the significant end of the technology, small-granule starch and a fine-fiber mixture in potato starch processing and separation juice are separated, the purity and quality of the potato protein obtained through flocculence and separation at the final phase are improved, and meanwhile the phenomenon that heat exchange equipment and a pipeline are blocked due to starch dextrinization in the follow-up process is avoided; the potato protein is degenerated and flocculated through the hot flocculence method to be changed from the starch separation juice hydrosol body state into flocculence body solid to facilitate solid and liquid separation, the quality of the extracted protein is ensured, and meanwhile the physical flocculence method and the chemical flocculence precipitation method are used in a combined mode in cooperation with flocculence of chemical auxiliaries, so that the protein extraction rate and the protein separation effect are greatly improved, and the potato protein purity is improved. In addition, resource utilization of the potato protein is performed, more than 50% pollutant loads are reduced for follow-up sewage treatment, and the dual effects of resource utilization and pollutant control are achieved.

Description

technical field [0001] The invention relates to a process for extracting potato albumen from potato starch processing and separation juice (process water), in particular to a process for extracting potato protein from potato starch processing and separation juice (process water) by thermal flocculation, which belongs to the category of protein The field of extraction and the technical field of recovery and utilization of potato starch processing separation juice (process water). Background technique [0002] my country's annual total feed output is 150-180 million tons, and the demand for protein raw materials is more than 60 million tons, with a gap of 38 million tons. Among the two major feed protein raw materials in China, 20-30 million tons of soybeans and 1-1.5 million tons of fishmeal are imported each year. Protein raw materials are the foundation of the development of the feed industry. The shortage and high price of protein raw materials in my country have become o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23J1/00
Inventor 刘刚周添红张铭儒
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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