Physical method for extracting soybean isoflavone from soybean molasses

Abstract

The invention discloses a physical method for extracting soybean isoflavone from soybean molasses, and belongs to the technical field of soybean products. The problems of complex process, time consumption, energy consumption, relatively high cost, uncleanness and environment unfriendliness of the prior art are solved. The method comprises the following steps: (1) diluting the soybean molasses into diluted molasses; (2) heating and stirring the diluted molasses, and preserving heat; (3) performing centrifugal solid-liquid separation on the diluted molasses, and reserving precipitates; (4) dissolving precipitates in an ethanol solution, performing stirring and centrifugal separation, and extracting supernatant; (5) performing negative pressure distillation on the supernatant to recover ethanol and obtain pasty soybean isoflavone; (6) dissolving the soybean isoflavone again with the ethanol solution, performing centrifugal separation, and extracting supernatant; (7) performing negative pressure concentration on the supernatant in (6) to obtain a concentrated solution of the soybean isoflavone, and simultaneously recovering the ethanol; (8) performing vacuum drying on the concentrated solution of the soybean isoflavone, and performing crushing to obtain the soybean isoflavone. The method can be used for extracting the soybean isoflavone from the soybean molasses.

Description

technical field [0001] The invention relates to a physical method for extracting soybean isoflavones by using soybean molasses, belonging to the technical field of soybean products. Background technique [0002] Soy isoflavones have the characteristics of phytoestrogens, and have certain preventive and therapeutic effects on diseases and aging caused by estrogen adjustment in the human body without causing side effects. In addition, soybean isoflavones also have a series of health effects such as preventing osteoporosis, anti-oxidation, lowering cholesterol, preventing and treating certain aspects of cancer. Therefore, soybean isoflavones are a multifunctional drug and health product with great development prospects. However, 80% of soybeans are currently used as oil crops, and the soybean meal used as oil crops is used as fertilizer or animal feed. Some soybean meal is used to extract soybean protein, and the remaining soybean molasses is sold at a low price. It is rich in...

AI Technical Summary

Problems solved by technology

However, 80% of soybeans are currently used as oil crops, and the soybean meal used as oil crops is used as fertilizer or animal feed. Some soybean meal is used to extract soybean protein, and the remaining soybean molasses is sold at a low price. It is rich in Soy isoflavones are mostly underutilized

[0003] At present, the extraction of soybean isoflavones generally uses soybean meal or soybeans as raw materials, and undergoes a series of steps such as crushing, degreasing, deproteinization, ethanol extraction, separation, and purification. The process is complex, time-consuming, energy-consuming, and costly.