Different vitamin C potassium as well as preparation method and application thereof

A technology of isovitamin and reaction, applied in the fields of application, food science, food preservation, etc., can solve the problems that hinder the sustainable and healthy development of enterprises, the mother liquor has no economic added value, and the cost of environmental protection treatment is high, so as to save the cost of environmental protection treatment and transform Low cost, the effect of assisting the normal contraction of muscles

Inactive Publication Date: 2018-06-08
郑州拓洋生物工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing process for the preparation of isovitamin C sodium produces a large amount of mother liquor with high sodium salt content after the conversion reaction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] The present invention provides a method for preparing potassium isovitamin C, which includes:

[0028] Using 2-keto-D-gluconic acid as raw material, adding alcohol solvent and catalyst for esterification reaction, and then adding alkaline potassium ion donor for conversion reaction to obtain potassium isovitamin C.

[0029] The method for preparing potassium isovitamin C provided by the present invention is based on the original sodium isovitamin C production process, and proposes a new process for preparing isovitamin C potassium by using an alkaline potassium ion donor as a transforming agent to participate in the conversion reaction. The process is an improvement on the basis of the original process, and the equipment transformation pressure is small, and the transformation cost is low. In addition, 2-keto-D-gluconic acid is directly dissolved in an alcohol solvent, and acid is added to directly carry out the esterification reaction, which is simple in operation and has s...

Example Embodiment

[0058] Example 1

[0059] This embodiment provides a method for preparing potassium isovitamin C, including:

[0060] (a) Using 1kg 2-keto-D-gluconic acid as raw material, adding 4L methanol and 0.04kg of concentrated sulfuric acid to carry out the esterification reaction, the reaction temperature is 63.5℃, the reaction time is 4h, and the reaction gives 2-keto-D- Methyl gluconate;

[0061] (b) Add the 2-keto-D-gluconate methyl ester obtained in step (a) to 0.5 kg K 2 CO 3 The conversion reaction was carried out, the reaction temperature was 67° C., and the reaction time was 2.5 hours to obtain potassium isovitamin C.

Example Embodiment

[0062] Example 2

[0063] This embodiment provides a method for preparing potassium isovitamin C, including:

[0064] (a) Take 1kg 2-keto-D-gluconic acid as raw material, add 3L methanol and 0.056kg of concentrated sulfuric acid to carry out esterification reaction, the reaction temperature is 60℃, the reaction time is 5h, the reaction obtains 2-keto-D- Methyl gluconate;

[0065] (b) Add the methyl 2-keto-D-gluconate obtained in step (a) to 0.4kg K 2 CO 3 The conversion reaction is carried out, the reaction temperature is 70° C., and the reaction time is 1 h to obtain potassium isovitamin C.

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Abstract

The invention provides a different vitamin C potassium as well as a preparation method and application thereof, and relates to the technical field of chemical synthesis. The preparation method of thedifferent vitamin C potassium provided by the invention comprises the steps of: taking 2-keto-D-gluconic acid as a raw material, adding alcoholic solvents and catalysts to conduct esterification reaction, then adding basic potassium ion donors for conversion reaction. Equipment upgrading pressure is low, transformation cost is low, the operation is simple, and the practicality is strong. By-products with no economic additional value and high environmental treatment costs are not produced, cost of environmental protection is saved while economic benefits are produced, and large-scale industrialproduction can be conducted. The different vitamin C potassium provided by the invention is prepared by using the preparation method, has high purity, and can be used for supplementing potassium elements needed by a human body. The invention provides application of the different vitamin C potassium as an antioxidant and freshness preventing agent, does not bring about excessive intake of sodium and causes disease, and is safer to eat on the technology of ensuring freshness preservation.

Description

technical field [0001] The invention relates to the technical field of chemical synthesis, in particular to a kind of potassium isocitamin C and its preparation method and application. Background technique [0002] Antistaling agent is an auxiliary product that can be used to treat food, prevent food from rotting and deterioration, keep the nutritional content, color, fragrance, and food fresh for a short period of time. Chemical synthetic substances and natural substances are mainly used as food preservatives. [0003] Isovitamin C sodium (sodium D-isoascorbate) is an important anti-oxidant and fresh-keeping agent in the food industry. It is a new type of biological food anti-oxidant, anti-corrosion and fresh-keeping color aid. It can maintain the color and natural flavor of food, prolong the shelf life, eradicate the discoloration, peculiar smell and turbidity of food and beverages, without any toxic and side effects, and can prevent the formation of carcinogens in pickle...

Claims

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Application Information

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IPC IPC(8): C07D307/62A61P3/02A61P3/00A61P9/06A61P9/10A61P9/12A61P21/00A23L3/3544A23L33/16
Inventor 龚舒秦天苍赵建波程喜梅徐琳秦金涛曹琳青高莉王敬臣崔凤霞张抗周俊俊曹晓伟李月番
Owner 郑州拓洋生物工程有限公司
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