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Method for extracting and producing malic acid from calcium malate solution

A technology of calcium malate and malic acid, which is applied in the field of food chemical industry, can solve the problems of low yield and difficult separation, and achieve the effects of high yield, short process flow and convenient operation

Inactive Publication Date: 2020-10-02
ANHUI BBCA FERMENTATION TECH ENG RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of difficult separation of impurities such as sugar and protein in the existing malic acid production products and low yield, and proposes a method for extracting and producing malic acid from calcium malate solution, which improves product quality and yield. Rate

Method used

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Examples

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Effect test

Embodiment 1

[0025] This embodiment provides a method for extracting and producing malic acid, using 37.86 kg of fermented liquid containing calcium malate obtained by fermenting malic acid as raw material, which is equivalent to containing 15.6% (w / w) of malic acid in the fermented liquid , calculated value), perform the following specific operations:

[0026] (1) heating the fermented liquid to 70° C., adding sulfuric acid for acid hydrolysis until the pH of the solution is 2.2, and separating by filtration to obtain 11.45 kg of calcium sulfate filter cake and 31.41 kg of filtrate (malic acid content 18.70% (w / w);

[0027] (2) pass step (1) gained filtrate into styrene series strongly acidic strongly acidic cation exchange resin, remove cation, obtain malic acid decationization solution 33.5kg (malic acid content 17.45%, Ca 2+ Content 15ppm);

[0028] (3) Pass the decationized solution gained in step (2) into the acrylic acid series weakly basic anion exchange resin column at 1.5BV / h to...

Embodiment 2

[0031] This embodiment provides a method for extracting and producing malic acid, using 32.65 kg of fermented liquid containing calcium malate obtained by fermenting malic acid as raw material, which is equivalent to containing 15.2% (w / w) of malic acid in the fermented liquid , calculated value), perform the following specific operations:

[0032] (1) heating the fermented liquid to 75° C., adding sulfuric acid for acid hydrolysis until the pH of the solution is 2.0, and separating by filtration to obtain 10.76 kg of calcium sulfate filter cake and 28.62 kg of filtrate (malic acid content 17.25% (w / w);

[0033] (2) pass step (1) gained filtrate into styrene series strongly acidic cation exchange resin, remove cation, obtain malic acid decationization solution 30.82kg (malic acid content 15.95%, Ca 2+ Content 10ppm);

[0034] (3) Pass the decationized solution gained in step (2) into the acrylic acid series weakly basic anion exchange resin column and resin fully adsorbed by ...

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Abstract

The invention relates to a method for extracting and producing malic acid from a calcium malate solution, comprising the following steps of: (1) using a fermentation broth containing calcium malate obtained from the production of malic acid by fermentation or enzymatic conversion as a raw material, adding sulfuric acid into the fermentation broth to carry out acidolysis, removing insoluble substances, and collecting a solution containing malic acid; (2) introducing cation exchange resin into the malic acid-containing solution obtained in the step (1) to obtain a decationized solution; and (3)introducing anion exchange resin into the decationized solution obtained in the step (2), adsorbing malic acid on the resin, washing with a detergent, adding dilute sulfuric acid for desorption, and collecting a malic acid desorption solution. The method provided by the invention has the characteristics of simple process, convenience in operation, high yield, high product quality and the like.

Description

technical field [0001] The invention belongs to the field of food chemical industry, and in particular relates to a method for extracting and producing malic acid from calcium malate solution. Background technique [0002] Malic acid, also known as 2-hydroxysuccinic acid, has two stereoisomers due to an asymmetric carbon atom in the molecule. In nature, it exists in three forms, namely D-malic acid, L-malic acid and its mixture DL-malic acid. Malic acid is a white crystal or crystalline powder, which has strong hygroscopicity and is easily soluble in water and ethanol. Has a particularly pleasant sour taste. Malic acid is mainly used in the food industry as an excellent sour agent and preservative. At the same time, it also has important applications in clinical medicine, daily chemical health care, chemical industry and construction industry. [0003] At present, its production methods include chemical synthesis, fermentation and enzymatic production processes. The che...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C51/02C07C51/47C07C59/245
CPCC07C51/02C07C51/47
Inventor 潘声龙胡富贵纪传侠张渊
Owner ANHUI BBCA FERMENTATION TECH ENG RES
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