Method for producing poisonless rape seed concentrate protein from coat removed cold pressed cake of rapeseed

Abstract

The process of producing poisonless concentrated rape seed protein from cold pressed decoated rapeseed cake includes the following steps: two stage extraction with composite solvent comprising alcohol, water and added sodium hydroxide, solid-liquid separation of the extracted wet solid in automatic horizontal centrifuge, eliminating the residual alcohol in the solid with a vacuum low temperature solvent eliminator to obtain poisonless concentrated rape seed protein, recovering rape seed oil and alcohol from the extracted liquid and reusing alcohol through distillation. In the two extraction stages, the first one has higher alcohol concentration.

Description

technical field [0001] The invention belongs to the technical field of vegetable oil and vegetable protein processing. It is suitable for the deep development and utilization of rapeseed (including double-low rapeseed) dehulled cold-pressed cake. It specifically relates to a method for preparing non-toxic rapeseed protein concentrate from rapeseed dehulled cold-pressed cake. Background technique [0002] Rapeseed is a major oil crop in my country, with an annual output of more than 10 million tons, and the amount of cake after pressing is about 6 million tons. Rapeseed protein is the best among all plant proteins, its amino acid balance is better than that of soybean protein, and it is similar to the value recommended by the United Nations Food and Agriculture Organization / World Health Organization. It is a complete protein, and its digestibility is 95% to 100%. , the protein titer is 3.0-3.5, which is higher than soybean protein, and its nutritional value is equal to or b...

AI Technical Summary

Problems solved by technology

As the existing detoxification technology, there are three main categories: ① physical and chemical methods, such as passivation myrosinase method, heat treatment, puffing detoxification method, ultraviolet irradiation method, microwave treatment method, etc.; ② chemical methods, such as alkali Treatment methods, acid-base salt degradation method, water detoxification method, solvent leaching method, etc.; ③ Biological methods, such as enzyme-catalyzed hydrolysis method, microbial fermentation method, etc.; although these methods can partially remove or degrade glucosinolates, they do not thorough

Some methods are better, such as the combined process of water agent method and SHMP method (Guangzhou Food Industry Science and Technology, No. 3, 1998), aqueous acetone extraction method (Journal of Chinese Cereals and Oils, No. 4, 2001), ether alcohol method (Journal of China Cereals and Oils, 2004 3rd issue of 2009), but the process is complicated, the equipment investment is large, and the energy consumption is high

Neither can be used as an effective method for preparing non-toxic rapeseed protein concentrate

And the raw material that these detoxification methods use is rapeseed kernel, rapeseed cake or rapeseed meal, is raw material to produce nontoxic rapeseed protein concentrate with rapeseed peeling cold-pressed cake and has no report

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