Method for extracting soybean peptide from soybean milk processing by-product bean dregs

Abstract

The invention discloses a method for extracting soybean peptide from soybean milk processing by-product-bean dregs. The method comprises the following steps: firstly, directly pumping by-product-beandregs generated on a soymilk processing production line into an improved soybean peptide extraction line, so that continuous treatment of the by-product-bean dregs in soymilk processing is realized, accumulation and stacking of the bean dregs are avoided, and the influence of fermentation of the bean dregs on the environment is avoided; secondly, effectively utilizing the bean dregs which are originally and directly used in animal and plant feeds and fertilizers and rich in a large amount of crude protein through the process improvement so as to avoid waste of a large amount of the crude protein in the bean dregs, extracting soybean peptide substances in the bean dregs, and using the extracted water-insoluble solid residues as a feed or a fertilizer, so that efficient utilization of the bean dregs is realized, and the economic benefit of the bean dregs is effectively improved. Moreover, the process is mild and controllable in reaction condition and has a relatively high application value.

Description

technical field [0001] The invention relates to the technical field of recycling of soybean milk processing waste resources, in particular to a method for extracting soybean peptides from soybean dregs, a by-product of soybean milk processing. Background technique [0002] Soybean-based vegetable protein beverages have achieved rapid development in recent years due to their rich protein and other ingredients with health functions. From 2011 to 2018, the market growth rate of vegetable protein beverages is as high as 35%. With the pace of reform and opening up, people's living standards and health care awareness are increasing day by day. Among the many vegetable protein beverages, the whole people have realized that "soy milk" processed from soybeans with "the same origin as medicine and food" is a well-deserved national beverage. [0003] "Soy milk" has formed a variety of brand products in the process of industrialization, but whether it adopts imported or domestic product...

AI Technical Summary

Problems solved by technology

[0003] "Soymilk" has formed a variety of brand products in the process of industrialization, but whether imported or domestic production lines are adopted, the by-product of solid emissions in the production process - bean dregs, not only affects production efficiency, but also pollutes the environment. Bean dregs are rich in organic components In terms of dry matter, the crude protein contained in wet okara is about 2.0% to 3.2%. In the prior art, okara is mostly used as animal protein feed or plant fertilizer, but a large amount of crude protein contained in okara is only used as feed Or fertilizer will cause serious waste of resources and affect corporate income; and due to the large amount of bean dregs produced, a soybean milk company that processes 5 tons of soybeans a day produces about 20 tons of wet bean dregs a day. It is also not to be underestimated