Method for producing ethanol from turmeric

A technology of ethanol and turmeric, which is applied in the field of ethanol production from turmeric, can solve the problems of low comprehensive utilization rate, waste, and high cost of diosgenin, and achieve the effects of saving costs, improving purity, and reducing heat energy consumption

Inactive Publication Date: 2016-07-06
SHANGNAN TIMES BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for producing ethanol from turmeric, which can self-sufficiently produce ethanol for extraction and preparation of diosgenin, and solve the problem of high cost, low comprehensive utilization rate and serious waste of diosgenin produced by turmeric in the prior art The problem

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  • Method for producing ethanol from turmeric

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Effect test

Embodiment 1

[0048] Wash 2.5 tons of turmeric, remove impurities at the same time, and recycle the washing water after natural precipitation, grind the cleaned and removed turmeric with a pulverizer, add water and grind it into a slurry with a particle size of <2mm, wherein the The solid content is 20% by weight, and the slurry is added to the α-amylase with an activity of 40000u / ml, and the dosage is 10u / g starch, and the starch liquid is obtained by enzymatic hydrolysis and liquefaction. The temperature during enzymatic hydrolysis and liquefaction is controlled at 100°C , the time for enzymatic hydrolysis and liquefaction is 90 minutes, the temperature of the liquefied starch solution is lowered to 60°C, and α-1,4-glucose hydrolase with an activity of 100000u / ml is added to the starch solution for saccharification for 40 minutes to obtain mash, α-1 , The amount of 4-glucose hydrolase is 150u / g starch, and the fermented yeast is added to the saccharification mash for biological fermentatio...

Embodiment 2

[0051] Wash 4 tons of turmeric and remove impurities at the same time. The washing water is recycled after natural precipitation. The turmeric after cleaning and removing impurities is crushed with a pulverizer, and ground with water to form a slurry with a particle size of <1mm. The solid content is 30% by weight, and the slurry is added with β-amylase with an activity of 30000u / ml for enzymatic hydrolysis and liquefaction to obtain starch liquid. The dosage of β-amylase is 12u / g starch, and the temperature during enzymatic hydrolysis and liquefaction is controlled At 85°C, the time for enzymatic hydrolysis and liquefaction is 110 minutes, the temperature of the liquefied starch solution is lowered to 65°C, and β-glucosidase with an activity of 110,000u / ml is added to the starch solution for saccharification for 60 minutes to obtain saccharified mash, β-glucoside The amount of enzyme is 200u / g starch, adding distiller's yeast to the saccharification mash for biological ferment...

Embodiment 3

[0054] Wash 40 tons of fresh turmeric (containing 25% dry matter) turmeric, remove impurities at the same time, and recycle the washing water after natural precipitation, grind the cleaned and removed turmeric with a pulverizer, add water and grind it into a particle size < 1.5mm slurry, wherein the solid content of the slurry is 15% by weight, the slurry is added with an activity of 20000u / ml α-1, 6 bond debranching enzyme for enzymatic hydrolysis and liquefaction to obtain starch liquid, α-1 , the amount of 6-bond debranching enzyme is 8u / g starch, the temperature during enzymatic hydrolysis and liquefaction is controlled at 110°C, the time of enzymatic hydrolysis and liquefaction is 120min, the temperature of the liquefied starch liquid is lowered to 63°C, and activity is added to the starch liquid 120000u / ml of α-1,4-glucose hydrolase was saccharified for 20 minutes to obtain mash, the dosage of α-1,4-glucose hydrolase was 100u / g starch, and Saccharomyces cerevisiae was add...

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Abstract

The invention relates to a method for producing ethanol from turmeric. According to the technology disclosed by the invention, starch in the turmeric is completely converted into ethanol by virtue of a biological fermentation technique, so that serious contamination in a conventional technology which fails to make use of about 60% of starch is solved from the source; in addition, diosgenin is extracted by virtue of ethanol produced from the turmeric, so that such ways as additionally buying ethanol and the like are avoided, and subsequently, energy consumption is reduced, cost is greatly reduced, the comprehensive utilization rate of the turmeric, which serves as a raw material, is improved and resource conversion and utilization are maximized; according to the method disclosed by the invention, a fermentation broth and filter residues are separated before distillation by virtue of a separation technology, and invalid ingredients are prevented from participating in the distillation by virtue of a slag-free distillation technology, so that the heat exhaustion in ethanol distillation is reduced and cost is saved; and meanwhile, the purity of the extracted ethanol is also improved.

Description

technical field [0001] The invention relates to the technical field of biological fermentation, in particular to a method for producing ethanol from yellow ginger. Background technique [0002] Diosgenin (diosgenin) is the ligand of diosgenin in the genus Dioscorea. It has various pharmacological effects such as anti-inflammatory, anti-bacterial, anti-cancer, and hypolipidemic. It is also the main raw material for the synthesis of steroid hormone drugs. 70% of the total amount of steroidal saponins required. Dioscin is usually produced from turmeric. In order to reduce the amount of strong acid used in the preparation process and reduce the discharge of high-acid wastewater pollutants, the current environmentally friendly methods for preparing diosgenin mostly use ethanol for extraction, which requires a large amount of ethanol to be consumed , the cost is higher, and generally only 10% diosgenin can be extracted from turmeric, and the remaining ingredients cause a large am...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P7/06C12R1/865
CPCY02E50/10
Inventor 曾滨牛武琪史院昌杨海涛
Owner SHANGNAN TIMES BIOTECH CO LTD
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