Method for extracting composite health-caring functional factors from broad bean green bean starch processing discharge water

Abstract

The invention relates the method of extracting composite health care functional factor, comprising the following steps: discharging the device cleaning water and handing cleaning water into initial storage tank. After first stage film segregation (1.0-50.0nm), extract the proteins whose molecular weight are above 2X104D. The effluent liquid passes the passing liquid of second stage film segregation, and enters into the third stage film segregation device which is reverse osmosis film. The water from the third stage film segregation device whose COD is below 25mg / L is discharged into circulating water pool to be used as recycle water. Passing the first stage film segregation, the second stage film segregation and the third stage film segregation, extract the proteins and composite health care functional factor which possess medical treatment and health care action, and overcome the defect of wasting resource and polluting environment.

Description

Technical field: [0001] The invention belongs to the field of agricultural product processing. Background technique: [0002] Broad beans (including mung beans, peas, red beans, and tartary buckwheat) are plant seeds that contain both starch and protein and various functional factors. For example, broad beans contain about 50% carbohydrates and about 25% protein; mung beans and peas contain carbohydrates Compounds are about 60%, and protein is about 20%; tartary buckwheat contains about 70% carbohydrates, and flavonoid functional factors are as high as 3-5%. Broad bean, mung bean and other plant seeds are the main raw materials for processing high-quality starch, but the current general technology is to use plant seeds such as broad bean and mung bean to be cleaned, soaked, separated from pulp and residue, washed with bean dregs, and the slurry is precipitated. The sediment is washed repeatedly and dried in the air. Or low-temperature drying (<30°C) and other process lin...

AI Technical Summary

Problems solved by technology

[0003] The deficiency of above-mentioned general processing technology is: processing water is about 20 times of raw material weight, and contains protein and various functional factors (as isoflavones, saponin, nucleic acid, stachyose, raffinose, folic acid etc. ), the content of soluble solids in the discharged water is as high as about 40% of the total amount of raw materials. If these high-value-added proteins and other functional factors are not extracted and utilized, it will not only cause waste of nutrient resources and water resources, but also seriously pollute the environment