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Method for extracting anthocyanins from black rice bran by circulating ultrasonic

A technology of circulating ultrasound and anthocyanin, which is applied in chemical instruments and methods, organic chemistry, sugar derivatives, etc., can solve the problems of difficult engineering amplification of extraction equipment, and achieve convenient recycling and reuse, high yield and high production efficiency Effect

Active Publication Date: 2021-02-09
INST OF AGRO FOOD SCI & TECH CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the method for extracting anthocyanins from black rice does not involve cyclic ultrasonic-assisted extraction. The present invention adopts a method of mechanical agitation and cyclic ultrasonic extraction to strengthen the crushing of plant cells, improve extraction efficiency, increase the content of anthocyanins in the extract, and solve the problem at the same time. There is a problem that the extraction equipment is difficult to scale up, and it provides a suitable method for the industrial production of anthocyanins from black rice bran

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0045] A method for extracting anthocyanins from black rice bran by circulating ultrasonic waves, comprising the following steps: cleaning the black rice bran, drying at a constant temperature of 50°C, and pulverizing to 60 meshes; ) in proportion to 40% ethanol for cyclic ultrasonic extraction, the extraction conditions are: temperature 40°C, ultrasonic power 800W, extraction time 90min; The solution was concentrated under reduced pressure and spray-dried to obtain black rice bran anthocyanin powder.

Embodiment 2

[0047] A method for extracting anthocyanins from black rice bran by circulating ultrasonic waves, comprising the following steps: cleaning the black rice bran, drying at a constant temperature of 50°C, and pulverizing to 60 meshes; ) in proportion to 40% ethanol for cyclic ultrasonic extraction, the extraction conditions are: temperature 40°C, ultrasonic power 1000W, extraction time 60min; The solution was concentrated under reduced pressure and spray-dried to obtain black rice bran anthocyanin powder.

Embodiment 3

[0049] A method for extracting anthocyanins from black rice bran by circulating ultrasonic waves, comprising the following steps: cleaning the black rice bran, drying at a constant temperature of 50°C, and pulverizing to 60 meshes; ) by adding 40% ethanol to carry out cyclic ultrasonic extraction. The extraction conditions are: temperature 40°C, ultrasonic power 1500W, extraction time 30min; The solution was concentrated under reduced pressure and spray-dried to obtain black rice bran anthocyanin powder.

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Abstract

The invention discloses a method for extracting anthocyanins from black rice bran by circulating ultrasonic waves, which comprises the following steps: step 1, crushing black rice bran into black rice bran powder; extracting the skin powder, and collecting the extract; and Step 3, drying the extract to obtain black rice bran anthocyanins. The present invention extracts anthocyanins from black rice bran by means of circulating ultrasonic method, which has simple process, high production efficiency and high yield of anthocyanins, and the whole process uses ethanol as the extraction solvent, which is convenient for recycling and reuse, and no waste water and waste gas are generated in the production process, which is suitable for Industrial production.

Description

technical field [0001] The invention belongs to the field of biotechnology, and relates to a method for extracting anthocyanins from black rice bran by circulating ultrasonic waves. Background technique [0002] Black rice is brown rice after black rice has been husked, the surface is black or dark brown, and belongs to the japonica rice category. Black rice not only contains protein, carbohydrates, B vitamins, vitamin E, calcium, phosphorus, potassium, magnesium, iron, zinc and other rich nutrients, but also contains vitamin C, chlorophyll, anthocyanins, carotene and cardiac glycosides, etc. special ingredients. Black rice is a kind of grain with the same origin of medicine and food and high nutritional value. It is known as "black pearl" and "king of rice in the world". Modern pharmacological studies have shown that black rice has the effects of nourishing yin and tonifying kidney, invigorating spleen and warming liver, improving eyesight and activating blood circulation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07H17/065C07H1/08
CPCC07H1/08C07H17/065
Inventor 王凤忠杨颖刘清霞范蓓王艳王东晖张丽静幸岑璨李淑英方芳
Owner INST OF AGRO FOOD SCI & TECH CHINESE ACADEMY OF AGRI SCI