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Method for separating dioscin hydrolysate

A technology of diosgenin and separation method, which is applied in food science, steroids, sucrose production, etc., can solve the problems of high cost of concentrated energy consumption, large volume of hydrolyzed solution, environmental pollution, etc., and achieve energy consumption reduction, simple process, Effects that are easy to operate

Active Publication Date: 2012-09-12
湘西自治州奥瑞克医药化工有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a method for separating dioscin hydrolyzate, the purpose of which is to solve the problems existing in the production process of diosgenin, such as large volume of hydrolyzed liquid, low concentration, high cost of concentrated energy consumption, etc., that is to fundamentally solve the environmental pollution control of this industry high cost problem

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  • Method for separating dioscin hydrolysate

Examples

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Effect test

Embodiment 1

[0023] 100 kg of dried turmeric and yam yam, crushed, added 200 kg of water to obtain a slurry, placed in a hydrolysis tank, liquefied by adding α-amylase, then added concentrated sulfuric acid to a concentration of 1N, pressurized and hydrolyzed in a conventional manner, after the hydrolysis was completed, neutralized with ammonia water , adjust the pH value to 5-6, adopt centrifugal solid-liquid separation to obtain filtrate and filter residue respectively.

[0024] Add calcium hydroxide to the filtrate at 80°C to adjust the pH value to 6.5-7, carry out deamination and desulfurization under negative pressure conditions, ammonia gas overflows under heating conditions, and the overflowing ammonia gas is absorbed by water to obtain ammonia water, which is applied to the next batch of hydrolysis Liquid neutralization, sulfate ion and calcium ion combined sedimentation to achieve the purpose of desulfurization, solid-liquid separation, respectively to obtain sugar liquid and calci...

Embodiment 2

[0027] 200kg of fresh turmeric, pulverize, add 200kg of water to obtain a slurry, put it in a hydrolysis tank, add α-amylase to liquefy, add concentrated sulfuric acid to a concentration of 1N, pressurize and hydrolyze in a conventional manner, after the hydrolysis is completed, neutralize with ammonia water, adjust When the pH value reaches 5-6, centrifugal solid-liquid separation is used to obtain filtrate and filter residue respectively.

[0028] Calcium hydroxide is added to the filtrate at 80°C to adjust the pH value to 6.5-7, and deamination and desulfurization are carried out under negative pressure conditions. The ammonia gas overflows under heating conditions, and the overflowing ammonia gas is directly passed into the next batch of hydrolyzed liquid for neutralization. Sulfate ions and calcium ions are combined and settled to achieve the purpose of desulfurization, and the solid and liquid are separated to obtain sugar liquid and calcium sulfate by-products.

[0029]...

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Abstract

The invention relates to a method for separating a dioscin hydrolysate, and belongs to the field of natural organic chemistry. According to the method, ammonia is used as an intermediate medium for deacidification and desulfuration, and acidic hydrolysate is neutralized directly by using the ammonia to solve the problem that a large amount of water is used to fulfill the aim of the deacidification of the dioscin hydrolysate, and a hydrolyzed sugar solution is diluted substantially, so the hydrolysate is large in volume, low in concentration, high in cost of concentration energy consumption and the like is solved; and the problem that diosgenin is not easy to extract in the later period due to insoluble salt pollution to dioscin hydrolysate, which is caused by neutralizing is solved. In the sugar solution which is subjected to solid-liquid separation, sulphate ions are settled by calcium hydroxide ion exchange reaction, and the ammonia overflows out of the sugar solution by heating under the negative pressure to fulfill the aim of the desulfuration; and the ammonia serving as the intermediate medium is regenerated and recycled, so that the cost of production raw materials is not increased.

Description

technical field [0001] The invention relates to a method for separating dioscin hydrolyzate, which belongs to the field of natural organic chemistry. Background technique [0002] Dioscin, known as the "mother of hormones", is an important intermediate in the production of various steroid hormones such as anti-inflammatory hormones, progesterone, and sex hormones, and has high pharmaceutical and chemical value. Dioscorea saponin mainly exists in the form of glycosides in plants such as Dioscoreaceae turmeric and earthworm, and can only be obtained through acid hydrolysis and extraction. Because plant fiber accounts for 35-40% in this type of Dioscoreaceae plants, starch accounts for 45-50%, water-soluble substances account for 10%, and saponin content only accounts for 1-2.5%, it contains a large amount of starch polysaccharides, acid The hydrolyzate has brought serious environmental pollution to the environment, and the high cost of treatment has made it difficult for ente...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07J71/00C01F11/46C13B10/00
Inventor 刘强张蕾
Owner 湘西自治州奥瑞克医药化工有限责任公司