A method for extracting grape seed oil and proanthocyanidins
A technology of proanthocyanidins and grape seed oil, which is applied in the direction of fat oil/fat production, fat production, organic chemistry, etc., can solve the problems of low purity of the extract, limited use, high production cost, etc., and achieve simple extraction method, low production cost, The effect of low equipment cost
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[0012] a. Clean the raw grape seeds, remove impurities such as grape skins, and then crush them to 10-20 meshes after natural drying or drying under reduced pressure;
[0013] b. Put the crushed grape seeds into the container, add 5-8 times the weight of petroleum ether and methanol in a mixed solvent with a weight ratio of 1:1, stir and soak for 5-10 hours, and filter to obtain the extract for use ; During this process, the extraction temperature can be controlled at around 70°C to increase the extraction rate;
[0014] c. Add the extract to the separation container and let it stand until the grape seed oil extract and the proanthocyanidin extract are completely layered, then separate the heavy phase extract and the light phase extract from each other;
[0015] d. Purifying the isolated proanthocyanidin extract through an ultrafiltration membrane with a relative molecular cross section of 500-5000 to obtain proanthocyanidin, and removing the solvent from the isolated grape se...
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