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Esterification accelerant and method for preparing esterifying liquid by using same

The technology of an accelerator and an esterification solution is applied in the field of an esterification accelerator and the preparation of an esterification solution by using the same, which can solve the problems of unstable treatment effect, not extensive technology, increase production cost, etc., so as to improve industrial production efficiency and improve Catalytic efficiency, the effect of improving esterification efficiency

Inactive Publication Date: 2011-02-02
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Esterase technology has been applied to promote cellar fermentation and improve product quality, but there is a problem of low efficiency
The formation of esters in the fermentation process of wine grains in the cellar is closely related to the action of enzymes. The esterification enzyme technology further improves the production efficiency, but there is a problem of low catalytic efficiency. The production mainly relies on the selection of high-efficiency esterification enzymes and the increase of esterification enzymes. amount to increase the ester content of the wine
However, this method also increases the production cost
[0006] Although the esterification enzyme technology has been mature, the technology of using esterification enzyme to treat yellow water, wine head and wine tail is not widespread, mainly because the effect of esterification treatment is unstable, resulting in insignificant economic benefits
According to reports, some manufacturers use yellow water, wine tails, pit mud, Daqu, esterification enzyme and other combined treatments, and adopt the "one pot" method for production. The process is simple, but there is a problem of excessive extensiveness: The action conditions of the enzyme adopt a compromise strategy. If it is necessary to make the bacterial flora ferment and use the organic matter in the yellow water to produce hexanoic acid, it is necessary to provide the necessary acid-base environment, but the acid-producing environment in the "one pot" method has actually reached pH3-5 is unfavorable to caproic acid fermentation, and the yield of ethyl caproate in some processes can only reach 100mg / 100ml; there is another "two-step" method, which provides temperature for pit mud flora, caproic acid bacteria and esterification enzyme respectively , pH conditions, according to reports, its ethyl hexanoate content is more than 150% higher than the "one pot" method, but the operation is more complicated and the treatment effect is still unstable

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The preparation of embodiment 1 esterification liquid

[0025] In an airtight container, add 1% (volume and total mass percentage, the liquid raw material unit is the same below) hexanoic acid, 20% ethanol, 25% yellow water, 50% (mass percentage, the solid raw material unit is the same below) rice husk, 2% esterification enzyme preparation and 0.03% n-propanol. After mixing the solids, add the mixed liquid evenly and seal. Place it at 30-35°C for 2 months for esterification. Take out the contents, add 20% wine tails in total amount before distillation, and distill according to the usual method. The finished product esterified liquid has a strong cellar aroma, and a sample is taken for gas chromatography detection, and the content of ethyl hexanoate reaches 322mg / 100ml.

Embodiment 2

[0026] The preparation of embodiment 2 esterification liquid

[0027] In an airtight container, add 1% (volume and total mass percentage, the liquid raw material unit is the same below) hexanoic acid, 20% ethanol, 25% yellow water, 50% (mass percentage, the solid raw material unit is the same below) rice husk, 2% esterification enzyme preparation and 0.03% isobutanol. After mixing the solids, add the mixed liquid evenly and seal. Place it at 30-35°C for 2 months for esterification. Take out the contents, add 20% wine tails in total amount before distillation, and distill according to the usual method. The finished product esterification liquid has a strong cellar aroma, and a sample is taken for gas chromatography detection, and the content of ethyl hexanoate reaches 365mg / 100ml.

Embodiment 3

[0028] The preparation of embodiment 3 esterification liquid

[0029] In an airtight container, add 1% (volume and total mass percentage, the liquid raw material unit is the same below) hexanoic acid, 20% ethanol, 25% yellow water, 50% (mass percentage, the solid raw material unit is the same below) rice husk, 2% esterase preparation and 0.03% butanol. After mixing the solids, add the mixed liquid evenly and seal. Place it at 30-35°C for 2 months for esterification. Take out the contents, add 20% wine tails in total amount before distillation, and distill according to the usual method. The finished product esterified liquid has a strong cellar aroma. Samples were taken for gas chromatography detection, and the content of ethyl hexanoate reached 346mg / 100ml.

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PUM

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Abstract

The invention relates to an esterification accelerant consisting of alcohol substances and a method for preparing high-titer esterifying liquid by using the same. The esterification accelerant is one or more selected from n-propanol, isobutyl alcohol, butanol, hexanol and beta phenethanol. After the esterification accelerant of the invention is added during the preparation of the biological esterifying liquid, high-efficiency biological esterification synthesis can be performed on organic acids, such as caproic acid and the like, and simple raw materials, such as foreshot, feint and the like, so as to obtain flavor components, such as ethyl caproate and the like; and the accelerant and the method also have an obvious effect on the synthesis efficiency of esters in a kiln.

Description

technical field [0001] The invention relates to an esterification accelerator and a method for preparing an esterification liquid by using the same, in particular to an esterification accelerator composed of alcohols, and a method for preparing a high-valence esterification liquid by using the esterification accelerator. The invention belongs to the technical field of liquor brewing. Background technique [0002] Yellow water contains a lot of organic matter, and the composition of yellow water from different manufacturers is slightly different. They all contain alcohols such as ethanol and propanol, acids such as acetic acid, butyric acid, caproic acid, and lactic acid, and some esters. After the bio-enzyme esterification technology is adopted, the acid-alcohol reaction can be promoted into highly volatile esters, which is beneficial to realize the reuse of yellow water and obtain certain economic benefits. [0003] Liquor heads contain high content of low-volatility ethan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12G3/02
Inventor 镇达陈茂彬方尚玲汪江波郭艺山
Owner HUBEI UNIV OF TECH
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