Method for cleanly producing saponin by comprehensively utilizing turmeric

Abstract

The invention provides a method for cleanly producing saponin by synthetically using yellow ginger, which can be realized by the following technique steps: (1) the yellow ginger is cleaned and ground to pulp after being crashed, particles in the pulp are led to reach 18 to 40 mashes, and mass percentage density is 10 percent to 15 percent; (2) two horizontal spiral unload settling centrifugal machines are used for the separation of the second level, and the saponin, fibers and starch are separated to obtain saponin pulp; (3) at the temperature of 34 DEG C to 38 DEG C, the saponin pulp is fermented naturally for 24 hours to 36 hours; (4) the fermented saponin pulp is filtered repeatedly by an ultra-filtration membrane and a disk plate to obtain the condensed saponin pulp with the mass percentage density of 15 percent to 20 percent and a permeate liquid; (5) finished products can be obtained by acid hydrolyzing, extracting, condensing and crystallizing; and (6) proteins in the permeate liquid obtained in step (4) are recycled, and the remained permeate liquid is sent to a sewage disposal system; the wastewater in the acid hydrolysis is also sent to the sewage disposal system after neutralization reaction, and after being treated, the two are used for cleaning the yellow ginger.

Description

Technical field [0001] The invention belongs to the field of phytochemical engineering, and particularly relates to a method for comprehensively utilizing turmeric to produce saponin cleanly. Background technique [0002] At present, the diosgenin produced in my country accounts for 50% of the world's total, mainly from turmeric. Yellow ginger plant fiber accounts for 35-40%, starch accounts for 45-50%, water-soluble substances account for 10%, and saponin content only accounts for 1-2.5%, and it is difficult to separate and extract. The conventional process is to treat turmeric at high temperature, high pressure and high acid Hydrolysis in the environment requires 150 tons of fresh yellow ginger to produce one ton of saponin, 20 tons of hydrochloric acid, and more than 500 tons of high-concentration wastewater. Its COD is as high as 30000mg / L (BOD8000mg / L), and the PH value is 1.0-2.5. The production cost of the process is high, the labor intensity is high, and the product quali...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the shortcomings of producing a large amount of waste water, difficulty in dehydration and concentration, and high production cost in the existing method of using turmeric to produce saponin, comprehensively utilize resources, reduce production costs while making the production environment harmless, the present invention proposes a comprehensive utilization of turmeric Method for clean production of saponin

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