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Method for extracting anthocyanidin from black waxy corn

A technology of black waxy corn and anthocyanin, applied in the production of bulk chemicals, organic chemistry, etc., can solve the problems of chemical toxicity, synthetic pigments without nutrition, etc. Effect

Inactive Publication Date: 2014-12-17
ANHUI CHUNLI PURIFYING SCI & TECH
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AI Technical Summary

Problems solved by technology

Although synthetic pigments are bright in color, strong in coloring power, and stable in nature, synthetic pigments are non-nutritive and chemically toxic

Method used

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Experimental program
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Embodiment Construction

[0013] 1. Raw material treatment of black corn with supercritical CO 2 The whole process of extracting anthocyanins:

[0014] 1.1 Raw material pretreatment

[0015] The black corn is sorted, dried, and crushed into a powder with a fineness of 70-90 meshes, preferably 80 meshes, with a high-speed pulverizer.

[0016] 1.2 Supercritical CO 2 Method for extracting whole ear dry black waxy corn pigment

[0017] Accurately weigh 1000g of the above-mentioned treated sample and put it into the extraction kettle. When the temperature in the extraction kettle reaches 60-80°C (preferably 70°C), turn on the CO 2 The gas cylinder sends air to the extraction kettle, and when the pressure in the extraction kettle reaches 60-90Mpa (preferably 80Mpa), adjust the CO 2 The flow rate reaches 90L / h, extract at the above temperature and pressure for 30-50 minutes (preferably 45 minutes), and collect the extract from the outlet of the desorption kettle at regular intervals.

[0018] 1...

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Abstract

The invention belongs to extraction method for anthocyanidin, and relatively concretely relates to a method for extracting anthocyanidin from black waxy corn. According to the method, black corn is taken as a raw material, supercritical CO2 is taken as an extraction agent, and compared with the prior art, the extraction rate can reach 15.61%. Test results show that the optimum technological conditions comprise that the extraction pressure is 80 MPa, the temperature is 70 DEG C, the time is 45 min, the CO2 flow is 90 L / h and the raw material fineness is 80 mesh. The anthocyanidin finished product is obtained by adding 10-time amount of ethanol with the concentration of 30%-60% into an obtained extractive solution for dissolving, performing alcohol precipitation, getting the supernatant, purifying by using macroporous adsorption resin, using distilled water to elute to colorless, then using an ethanol solution with the concentration of 30%-60% as an eluant for eluting, performing reduced-pressure concentration on an obtained ethanol eluent to obtain an extractum and drying the extractum.

Description

technical field [0001] The invention belongs to a method for extracting anthocyanins, and more specifically relates to a method for extracting anthocyanins from black corn. Background technique [0002] Anthocyanidin, also known as anthocyanidin, is a kind of water-soluble natural pigment widely present in plants in nature, belonging to flavonoid compounds. Anthocyanin is a pure natural anti-aging nutritional supplement. Studies have shown that it is the most effective antioxidant found by humans today. Its antioxidant performance is fifty times higher than vitamin E and twenty times higher than vitamin C. It is 100% bioavailable to the human body and can be detected in the blood twenty minutes after ingestion. It can not only prevent the early generation of skin wrinkles, but also maintain normal cell connections, stabilize blood vessels, enhance microvascular circulation, improve the flow of capillaries and veins, and then achieve rapid healing of abnormal skin. Anthocya...

Claims

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Application Information

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IPC IPC(8): C07D311/62
CPCC07D311/62Y02P20/54
Inventor 陆文通
Owner ANHUI CHUNLI PURIFYING SCI & TECH
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