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Method of extracting tartaric acid by fermenting grape pips

A technology for tartaric acid and grape seeds is applied in the field of grape seed fermentation to extract tartaric acid, which can solve the problems of poor efficiency and low yield, and achieve the effects of easy operation, high extraction rate and good economic benefits.

Inactive Publication Date: 2014-02-26
界首市鸿丰生物助剂加工厂
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  • Abstract
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AI Technical Summary

Problems solved by technology

Tartaric acid is generally extracted from tartar produced in the wine brewing process, with low yield and poor efficiency

Method used

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Examples

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Embodiment 1

[0009] A method for extracting tartaric acid by fermenting grape seeds, including the following method: adding tartaric acid fermentation bacteria (variant strain of Gluconoba-cter suboxydans) from grape seeds left over from the juice, fermenting at 30°C for 5-6 days, and oxidizing and decomposing them by glucose Through 2,5-diketo-D-gluconic acid, tartaric acid is formed at the same time as glycolic acid. The melting point of tartaric acid is 171-174℃ and the melting point of glycolic acid is 78-79℃. Separate and purify tartaric acid.

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PUM

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Abstract

The invention discloses a method of extracting tartaric acid by fermenting grape pips, and relates to the technical field of extraction methods. The method comprises the following steps: adding residual grape pips after juicing into tartaric acid fermentation bacteria (dissociants of Gluconoba-cter suboxydans); fermenting for 5-6 days at 30 DEG C; forming tartaric acid by oxygenolysis of glucose by way of 2,5-diketo-D-gluconic acid while forming hydroxyacetic acid, wherein the melting point of tartaric acid is 171-174 DEG C, and the melting point of hydroxyacetic acid is 78-79 DEG C. The tartaric acid is separated and purified according to great disparity of the melting points of tartaric acid and hydroxyacetic acid. The method disclosed by the invention is simple, convenient for actual operation, high in extraction rate and good in product purity, and has good economical benefit.

Description

Technical field [0001] The invention relates to the technical field of extraction methods, in particular to a method for extracting tartaric acid by fermentation of grape seeds. Background technique [0002] Tartaric acid, 2,3-dihydroxysuccinic acid, is a carboxylic acid found in many plants, such as grapes and tamarind. It is also one of the main organic acids in wine. As an antioxidant added to food, it can make food have a sour taste. The biggest use of tartaric acid is a beverage additive. It is also a raw material for the pharmaceutical industry. In the mirror industry, tartaric acid is an important auxiliary and reducing agent, which can control the formation speed of silver mirrors and obtain a very uniform coating. Tartaric acid is generally extracted from the tartar produced in the winemaking process, with low yield and poor efficiency. Summary of the invention [0003] The technical problem to be solved by the present invention is to provide a method for extracting t...

Claims

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Application Information

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IPC IPC(8): C12P7/46C12R1/01
Inventor 金刚
Owner 界首市鸿丰生物助剂加工厂
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