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A method for extracting polyphenols from shovel seed coat

An extraction method and a shovel technology, which are applied in the field of chemical substance extraction, can solve problems such as no relevant reports on polyphenol extraction, and achieve the effects of improving the taste of shovel powder and improving efficiency and yield.

Active Publication Date: 2020-12-04
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Studies have shown that the seed coat of the shovel contains a large amount of polyphenols, but there is no relevant report on the extraction of polyphenols from the testa of the shovel

Method used

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  • A method for extracting polyphenols from shovel seed coat
  • A method for extracting polyphenols from shovel seed coat

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 1. Raw material processing: Soak the red shovel at 18-20°C for 6-8 hours, cook at 100°C for 15 minutes, dry with hot air until the surface is dry, then spray hot water at 70°C, rest for 10 minutes, and centrifuge to remove residual water. Then use a huller to peel off the skin, take 500g of the skin, dry it, and smash it to 80 mesh.

[0042] 2. Enzyme treatment: add 100mg of Vc to the above powder to protect polyphenols from oxidation, add cellulase, hemicellulase, pectinase, pectin lyase, the total amount added is 80-90mg / kg, The weight ratio of various enzymes is cellulase: hemicellulase: pectinase: pectin lyase = 4:4:3:2, the total amount of enzyme is 85mg / kg, the temperature is 45°C, pH4, and the enzymolysis is 45min , to obtain the enzymatic solution.

[0043] 3. Ultra-high pressure treatment: mix the above solution with 65% ethanol evenly and put it into a packaging bag, adjust the pressure to 150 MPa, hold the pressure for 3 minutes and carry out extraction at a...

Embodiment 2

[0045] 1. Raw material processing: Soak the red shovel at 18-20°C for 6-8 hours, cook at 100°C for 15 minutes, dry it with hot air until the surface is dry, cool it down to 3-5°C quickly, and then peel it with a rice huller to remove the skin 500g, dry, crushed to 80 mesh.

[0046] 2. Enzyme treatment: Add 100mg of Vc to the above powder to protect polyphenols from oxidation, then add cellulase, hemicellulase, pectinase, and pectin lyase in a total amount of 80-90mg / kg , the weight ratio of various enzymes is cellulase: hemicellulase: pectinase: pectin lyase=4:4:3:2, enzyme total amount 85mg / kg, temperature are 45 ℃, pH4, enzymolysis After 45 minutes, the enzymatic solution was obtained.

[0047] 3. Ultra-high pressure treatment: mix the above solution with 70% ethanol evenly and put it into a packaging bag, adjust the pressure to 250MPa, hold the pressure for 6min and carry out extraction at a temperature of 50°C. The obtained polyphenol content is 1.351g / 100g.

[0048] 4. U...

Embodiment 3

[0050] 1. Raw material processing: Soak the red shovel at 18-20°C for 6-8 hours, cook at 100°C for 15 minutes, dry with hot air until the surface is dry, then spray hot water at 70°C, rest for 10 minutes, and centrifuge to remove residual water. Then use a huller to peel off the skin, take 500g of the skin, dry it, and smash it to 80 mesh.

[0051] 2. Enzyme treatment: Add 100mg of Vc to the above powder to protect polyphenols from oxidation, then add cellulase, hemicellulase, pectinase, and pectin lyase in a total amount of 80-90mg / kg , the weight ratio of various enzymes is cellulase: hemicellulase: pectinase: pectin lyase=4:4:3:2, enzyme total amount 85mg / kg, temperature are 45 ℃, pH4, enzymolysis After 45 minutes, the enzymatic solution was obtained.

[0052] 3. Ultra-high pressure treatment: mix the above solution with 75% ethanol evenly and put it into a packaging bag, adjust the pressure to 300MPa, hold the pressure for 5min and carry out extraction at a temperature of...

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Abstract

The invention provides an extraction method of eleusine coracana seed coat polyphenol. According to the method, eleusine coracana seed coat powder is obtained in a unique peeling mode, then the eleusine coracana seed coat powder is subjected to enzymolysis by a specially blended mixed enzyme, and an extracting solution of the eleusine coracana seed coat polyphenol is obtained by high-pressure pressure maintaining processing. By the method provided by the invention, the eleusine coracana seed coat polyphenol is obtained for the first time, and extraction yield is high.

Description

technical field [0001] The invention belongs to the technical field of extraction of chemical substances, in particular to the extraction of polyphenols. Background technique [0002] A shovel is a kind of coarse grain. There are brown and white, spherical granular. Shovel is an annual herbaceous cereal crop. Stem erect, 50-120cm high, often branched. Grain is a kind of grain with good storage resistance and high nutritional value. It is rich in protein (including 7% protein), various amino acids, vitamins, choline and linoleic acid and other trace elements; It has the effects of nourishing qi, thickening the stomach, nourishing blood and calming the nerves. [0003] Shovel is a relatively special food crop with high nutritional value, rich in dietary fiber, various minerals and vitamins, especially calcium, iron, potassium, vitamin B group (B 1 , B 2 , B 3 ), carotene, sulfur-containing amino acids, etc. are much higher than other grains, and the shovel is also rich ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K36/899
CPCA61K36/899A61K2236/15A61K2236/17A61K2236/19A61K2236/333A61K2236/55
Inventor 李赤翎黄婉
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY