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Extraction method of juglone and derivative in walnut green tangerine peel

An extraction method and technology of walnut green husk powder, which is applied in quinone separation/purification, organic chemistry, etc., can solve the problems of low extraction rate of juglone and its derivatives, difficult disposal of walnut green husk waste, etc., and achieve simple and easy process, high extraction High efficiency, the effect of improving the extraction rate

Inactive Publication Date: 2014-12-17
LULIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a method for extracting juglone and derivatives from juglone green husks in order to solve the problems of low extraction rate of juglone and its derivatives in juglone green husks and difficult disposal of juglone green husk waste

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for extracting juglone and derivatives in green walnut peel, comprising the following steps:

[0021] Peel fresh walnut green skin, wash 3 (or 4 or 5) times, and dry naturally for 7 (or 8) days;

[0022] After drying, crush and sieve through a 40 (or 50 or 60 or 70 or 80) mesh screen;

[0023] Put the sifted walnut green skin powder in a container, and add pure water according to the solid-liquid mass ratio of 1:8 (or 9 or 10 or 11 or 12);

[0024] Add pectinase and cellulase with a concentration of 1 (or 1.5 or 2 or 2.5) g / L mixed in any ratio to the above solution, and the volume ratio of enzyme and solution is 1:90 (or 95 or 100 or 105 or 110), adjust the pH value of the solution to 5.5 (or 5.8 or 6.3 or 6.7), seal the container, and shake at a constant temperature of 30 (or 35 or 40 or 45 or 50) ℃ for 36 (or 42 or 48 or 54 or 60) h;

[0025] The solution after enzymolysis is concentrated under reduced pressure to obtain a concentrated solution;

[0026]...

Embodiment 2

[0028] A method for extracting juglone and derivatives in green walnut peel, comprising the following steps:

[0029] Peel fresh walnut green skin, wash 3 (or 4 or 5) times, and dry naturally for 7 (or 8) days;

[0030] After drying, crush and sieve through a 40 (or 50 or 60 or 70 or 80) mesh screen;

[0031] Put the sifted walnut green skin powder in a container, and add pure water according to the solid-liquid mass ratio of 1:8 (or 9 or 10 or 11 or 12);

[0032] Add pectinase and cellulase with a concentration of 1 (or 1.5 or 2 or 2.5) g / L mixed in any ratio to the above solution, and the volume ratio of enzyme and solution is 1:90 (or 95 or 100 or 105 or 110), adjust the pH value of the solution to 5.5 (or 5.8 or 6.3 or 6.7), seal the container, and shake at a constant temperature of 30 (or 35 or 40 or 45 or 50) ℃ for 36 (or 42 or 48 or 54 or 60) h;

[0033] The solution after enzymolysis is placed on a microwave ultrasonic extractor, the microwave power is set to 100 (o...

Embodiment 3

[0037] A method for extracting juglone and derivatives in green walnut peel, comprising the following steps:

[0038] Peel fresh walnut green skin, wash 3 (or 4 or 5) times, and dry naturally for 7 (or 8) days;

[0039] After drying, crush and sieve through a 40 (or 50 or 60 or 70 or 80) mesh screen;

[0040] Put the sifted walnut green skin powder in a container, and add pure water according to the solid-liquid mass ratio of 1:8 (or 9 or 10 or 11 or 12);

[0041]Add pectinase and cellulase with a concentration of 1 (or 1.5 or 2 or 2.5) g / L mixed in any ratio to the above solution, and the volume ratio of enzyme and solution is 1:90 (or 95 or 100 or 105 or 110), adjust the pH value of the solution to 5.5 (or 5.8 or 6.3 or 6.7), seal the container, and shake at a constant temperature of 30 (or 35 or 40 or 45 or 50) ℃ for 36 (or 42 or 48 or 54 or 60) h;

[0042] The solution after enzymolysis is placed on a microwave ultrasonic extractor, the microwave power is set to 100 (or...

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PUM

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Abstract

The invention relates to an extraction method of chemical components in walnut green tangerine peel, particularly an extraction method of juglone and derivative in the walnut green tangerine peel. The extraction method comprises the following steps: pealing fresh walnut green tangerine peel, and sieving by a screen mesh of 40-80 meshes after washing, drying and crushing; putting the sieved walnut green tangerine peel powder into a container, and adding pure water according to a solid-liquid quality ratio of 1: (8-12); adding pectase and cellulase in the container, sealing the container after regulating the ph values of the solution in the container to 5.5-6.7, and then oscillating the resultant at the constant temperature of 20-40 DEG C for 36-60h; reducing pressure of and condensing the solution after enzymatic hydrolysis to obtain a concentrate; and extracting the resultant by petroleum ether after freezing and drying the concentrate to obtain juglone and derivative. In the invention, walnut green tangerine peel cell wall is destroyed by enzymatic hydrolysis, and recovery rate is raised by microwave ultrasonic wave processing; the technology of obtaining juglone and derivative by petroleum ether extraction is simple with high recovery rate, and the problems of low pericarp salvaging and low quinone substance recovery rate in walnut plucking and processing are solved.

Description

technical field [0001] The invention relates to a method for extracting chemical components in green walnut peel, in particular to a method for extracting juglone and its derivatives from green walnut peel. Background technique [0002] Walnuts belong to the Juglandaceae Juglans genus. The planting area of ​​walnuts in my country reaches 3175 hectares, with an annual output of nearly 50wt. The total area and annual output both rank first in the world. In the chemical composition of walnut green bark, there are 39 kinds of volatile oils and 7 kinds of fatty acids and other seven types of compounds. It is rich in 1, 8-cineole, juglone, juglone, hyperin, volatile oils and other plant secondary substances. , has obvious phytoallelopathy. In particular, juglone and its derivatives in walnut green bark have obvious inhibitory effects on the germination of bluegrass, clover, rye, tall fescue, and purple fescue seeds, and the inhibitory effect becomes stronger and stronger as the c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C46/10C07C50/32
Inventor 杨卫民高晓丽闫艳华赵君杜京旗
Owner LULIANG UNIV
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