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Methylpyrane anthocyanin preparation method and application of methylpyrane anthocyanin

A technology of methylpyranocyanide and formic acid, which is applied in the field of preparation of methylpyranocyanin, can solve the problems of low synthesis yield and slow synthesis speed, and achieve the effects of increasing yield, promoting synthesis, and shortening reaction time

Active Publication Date: 2017-02-22
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a method for preparing methylpyranocyanin and its application, which is used to solve the problem

Method used

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  • Methylpyrane anthocyanin preparation method and application of methylpyrane anthocyanin

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Embodiment 1

[0033] After mixing absolute ethanol and distilled water at a volume ratio of 1:9, a chromatographic grade formic acid solution with a volume fraction of 0.2% is added dropwise to obtain the first product, the pH of which is less than 7.

[0034] Weigh 1mg cyanidin 3-oxyglucoside and dissolve it in the first product 10ml, continue to add 1ml of chromatographic grade acetone to the reaction system to obtain the second product 1, in the second product 1, cyanidin 3-oxyglucoside: Acetone = 1:1.

[0035] The second product 1 was placed in the dark condition figure 2 The third product 1 is obtained by ultrasonic treatment in the described device. Wherein, during ultrasonic treatment, the horn is placed at 1cm below the liquid surface; the ultrasonic power of ultrasonic treatment is 100W, the total time of ultrasonic treatment is 20min, and the temperature of ultrasonic treatment is 35°C; the duty ratio of ultrasonic treatment is 1: 1. The time for a single ultrasonic treatment i...

Embodiment 2

[0038] After mixing absolute ethanol and distilled water at a volume ratio of 1:9, a chromatographic grade formic acid solution with a volume fraction of 0.2% is added dropwise to obtain the first product, the pH of which is less than 7.

[0039] Weigh 1mg cyanidin 3-oxyglucoside and dissolve it in the first product 10ml, continue to add 1ml chromatographic grade acetone to the reaction system to obtain the second product 2, in the second product 2, cyanidin 3-oxyglucoside: Acetone = 1:1.

[0040] The second product 2 was placed in the figure 2 Ultrasonic treatment in the described device yields the third product 2. Wherein, during ultrasonic treatment, the horn is placed at 1cm below the liquid surface; the ultrasonic power of ultrasonic treatment is 100W, the total time of ultrasonic treatment is 40min, and the temperature of ultrasonic treatment is 35°C; the duty ratio of ultrasonic treatment is 1: 1. The time for a single ultrasonic treatment is 1s, that is, after ultra...

Embodiment 3

[0043] After mixing absolute ethanol and distilled water at a volume ratio of 1:9, a chromatographic grade formic acid solution with a volume fraction of 0.2% is added dropwise to obtain the first product, the pH of which is less than 7.

[0044] Weigh 1mg cyanidin 3-oxyglucoside and dissolve it in the first product 10ml, continue to add 1ml chromatographic grade acetone to the reaction system to obtain the second product 3, in the second product 3, cyanidin 3-oxyglucoside: Acetone = 1:1.

[0045] The second product 3 was placed in the figure 2 Ultrasonic treatment in the described device yields the third product 3. Wherein, during ultrasonic treatment, the horn is placed at 1cm below the liquid surface; the ultrasonic power of ultrasonic treatment is 100W, the total time of ultrasonic treatment is 60min, and the temperature of ultrasonic treatment is 35°C; the duty ratio of ultrasonic treatment is 1: 1. The time for a single ultrasonic treatment is 1s, that is, after ultra...

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Abstract

The invention belongs to the field of wine making, and particularly relates to a methylpyrane anthocyanin preparation method and an application of methylpyrane anthocyanin prepared by the preparation method to the field of aged wine preparation. According to experimental determination, by the preparation method, after one month, the yield of the methylpyrane anthocyanin is relatively improved by 20%-40%. Therefore, synthesis of methylpyrane anthocyanin can be promoted, reaction time is shortened, the synthesis efficiency of the methylpyrane anthocyanin is improved on the whole, and the technical shortcomings of low synthesis speed and low synthesis yield of a methylpyrane anthocyanin synthesis method in the prior art are overcome.

Description

technical field [0001] The invention belongs to the field of brewing, and in particular relates to a preparation method and application of methylpyranocyanin. Background technique [0002] During the fermentation and aging process, the gradual change of wine body color is mainly due to the cyclization, addition or concentration, polymerization and other reactions of berry anthocyanins, intermediate products of glucose fermentation and metabolism, and other polyphenols in berries. It is caused by the formation of more stable coloring substances (anthocyanin derivatives). Pyranocyanin is a new type of anthocyanin derivatives in the important coloring substances of wine body, which has an important influence on the color maturity of aged wine. Pyranocyanin derivatives have high stability and good Therefore, it is of great significance to the research on the structural stability of natural anthocyanins and their development and application in the wine and fruit wine processing ...

Claims

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Application Information

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IPC IPC(8): C07H17/04C07H1/00
CPCC07H1/00C07H17/04
Inventor 孙建霞罗海霞卢业玉
Owner GUANGDONG UNIV OF TECH
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