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Method for producing diosgenin, uranidin and acid starch by using yellow ginger

A technology of diosgenin and acid starch, which is applied in chemical instruments and methods, steroids, azo dyes, etc., can solve the problems affecting the development prospect of turmeric and starch secondary pollution, and achieve follow-up resource guarantee and efficient production , the effect of low price

Inactive Publication Date: 2014-09-10
向华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] The purpose of the present invention is to aim at the lack of current turmeric resources and the generation of a large amount of waste, which has seriously affected the long-term utilization and development prospects of turmeric, and the use of current extraction methods will cause a large amount of waste to the environment. , crystallization and recrystallization methods produce turmeric saponin on a large scale from turmeric rhizomes, utilize a large amount of natural yellow pigment, starch and cellulose at the same time, effectively solve the problems such as utilizing starch to produce secondary pollution, and can improve turmeric saponin and turmeric in turmeric Yield of yellow pigment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Turmeric is cleaned, dried and pulverized through a 20 mesh sieve, wherein more than 90% of the pulverized turmeric granules can pass through a 20 mesh sieve, and 100kg of turmeric powder is weighed;

[0042] (2) Add 500kg of 80% ethanol, extract at room temperature for 1.5 hours, filter once with a ceramic membrane, and repeat twice to obtain filter residue and three times of filtrate;

[0043] (3) Combine the filtrates three times, and concentrate under reduced pressure at 50°C to recover ethanol until there is no alcohol smell;

[0044] (4) Add hydrochloric acid solution to the concentrated solution to make the final concentration 2.5mol / L, and carry out acid hydrolysis at 30°C for 1.5 hours;

[0045] (5) the acid solution is filtered, and the filter residue is crude saponin 4.28kg;

[0046] (6) The filtrate is adsorbed by KLFC-150 macroporous resin, filtered once with a ceramic membrane to obtain macroporous resin particles that have adsorbed pigment, rinsed wi...

Embodiment 2

[0053] (1) Turmeric is cleaned, dried and pulverized through a 20 mesh sieve, wherein more than 90% of the pulverized Turmeric granules can pass through a 20 mesh sieve, and 200kg of turmeric powder is weighed;

[0054] (2) Add 800kg of 80% ethanol, extract at room temperature for 1.5 hours, filter once with a ceramic membrane, repeat twice to obtain filter residue and three times of filtrate;

[0055] (3) Combine the filtrates three times, and concentrate under reduced pressure at 50°C to recover ethanol until there is no alcohol smell;

[0056] (4) Add hydrochloric acid solution to the concentrated solution to make the final concentration 2.5mol / L, and carry out acid hydrolysis at 30°C for 1.5 hours;

[0057] (5) the acid solution is filtered, and the filter residue is crude saponin 8.95kg;

[0058] (6) The filtrate is adsorbed by AB-8 macroporous resin, and the ceramic membrane is filtered once to obtain the macroporous resin particles of the adsorbed pigment, which is was...

Embodiment 3

[0065] (1) Turmeric is washed, dried and pulverized through a 20 mesh sieve, wherein more than 90% of the pulverized turmeric granules can pass through a 20 mesh sieve, and 400kg of turmeric powder is weighed;

[0066] (2) Add 1700kg of 80% ethanol, extract at room temperature for 1.5 hours, filter once with a ceramic membrane, and repeat twice to obtain filter residue and three times of filtrate;

[0067] (3) Combine the filtrates three times, and concentrate under reduced pressure at 50°C to recover ethanol until there is no alcohol smell;

[0068] (4) Add hydrochloric acid solution to the concentrated solution to make the final concentration 2.5mol / L, and carry out acid hydrolysis at 30°C for 1.5 hours;

[0069] (5) the acid solution is filtered, and the filter residue is crude saponin 18.28kg;

[0070](6) The filtrate is adsorbed by X-5 macroporous resin, and the ceramic membrane is filtered once to obtain the macroporous resin particles of the adsorbed pigment, which is ...

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Abstract

In order to solve the problems that the long-term utilization development prospect of yellow ginger is seriously influenced by insufficient yellow ginger resources and production of a large number of wastes at present and a great number of wastes are generated by using a current extraction method, the invention provides a method for producing diosgenin, uranidin and acid starch by using yellow ginger; yam diosgenin is produced from the rhizome of the yellow ginger on a large scale through the method comprising the steps of extraction, acid hydrolysis, crystallization and recrystalization; a great deal of natural uranidin, starch and cellulose are simultaneously utilized, so that problems such as secondary pollution caused by utilizing the starch and the like can be effectively solved, and the yields of yam diosgenin and uranidin in the yellow ginger can also be increased.

Description

technical field [0001] The invention belongs to the field of natural product processing, and relates to a method for clean production and utilization of turmeric resources, and more specifically relates to a method for comprehensive utilization of turmeric in the production process while ensuring cleanliness and pollution-free production, mainly producing diosgenin, Products such as yellow pigment and acid starch. Background technique [0002] Turmeric, also known as Dioscrea shield leaf, is a perennial herbaceous plant of Dioscrea (Dioscrea. Recorded in "Pharmacopia of the People's Republic of China" (2000 edition), the content of diosgenin (commonly known as saponin) in its rhizomes is 1.1% to 16.15%, and it is a synthetic steroid hormone (steroid hormone) drug and steroid It is an important pharmaceutical and chemical raw material for steroid prophylactic. Herbaceous vines. The rhizomes grow horizontally. Stems slender, glabrous, with longitudinal wrinkles or shallow ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07J71/00C09B61/00C08B31/00
Inventor 向华
Owner 向华
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