Pollution-free new technique for extracting diosgenin from yellow ginger

Abstract

The invention discloses a pollution-free new technique for extracting diosgenin from yellow ginger. The technique comprises the following steps: conducting pretreatment on the yellow ginger; using a solvent to extract the diosgenin with the supplement of other means, and carrying out filtration to obtain a saponin extracting solution; drying the filter residue, and adding a concentrated sulfuric acid into the dried filter residue for carbonization and sulfonation to obtain a carbon-based solid acid; adding the saponin extracting solution into the solid acid at a 2-20 g / 50 ml ratio, and carrying out hydrolysis in a water bath at 60-90 DEG C for 2-12 h; after the hydrolysis is completed, separating the solid acid through filtration, using an organic solvent to extract the diosgenin, and carrying out concentration, crystallization, and drying to obtain a diosgenin product. The technique is free of pollution and has the advantages that saponin hydrolysis is realized by using the solid acid prepared from a waste residue of the yellow ginger, so that resources can be recycled, and the defects in the traditional production processes, such as serious pollution from wastewater and serious waste of waste residues, can be overcome; the solid acid is easy to separate and can be repeatedly utilized, so that the low-cost, environment-friendly and high-efficient new technique provided by the invention can be directly used for industrialized clean production of the diosgenin.

Description

technical field [0001] The invention relates to the extraction technology of plant effective components, in particular to a new technology for pollution-free extraction of diosgenin from turmeric. Background technique [0002] Diosgenin is also called diosgenin, its chemical name is isospiro-5-en-3β-ol, and its molecular formula is C 27 h 42 o 3 , is the basic raw material for the production of steroid hormone drugs. It exists in the rhizomes of yam plants. Among the yam plants, yam yam (commonly known as turmeric) has the highest dioscin content. Traditional industrial production uses turmeric as the main raw material. The turmeric is washed and crushed, hydrolyzed with an inorganic acid solution (hydrochloric acid or sulfuric acid solution), filtered, then washed with water and dried, and the diosgenin is extracted with petroleum ether or gasoline, and finally concentrated Crystallization and drying to obtain the finished product of diosgenin. [0003] Although this ...

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Problems solved by technology

[0005] The invention aims to solve the difficult problems that restrict the healthy development of the saponin industry, such as low saponin yield, large waste water pollution, and serious waste residue waste in the traditional production process of diosgenin, so as to provide a low-cost, pollution-free, recyclable resource A new clean production process with high yield of saponin and saponin

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