Method for continuously extracting active ingredients from grape seeds

Abstract

The invention discloses a method for continuously extracting grape seed oil and proanthocyanidin from grape seeds. The method comprises the following steps of: (1) treating grape seeds, and performing crushing, enzymolysis and vacuum drying on the grape seeds; and (2) firstly extracting the grape seed oil by using the supercritical carbon dioxide extraction technology, changing the extracting temperature and the extracting pressure after the grape seed oil is extracted, adding an entrainer, collecting a secondary extract, and obtaining a proanthocyanidin extract through separation and purification. By adopting the method, the total unsaturated fatty acid in the grape seed oil is 80-90 mass percent, and the proanthocyanidin in the proanthocyanidin extract is 90-98 mass percent. By adopting the method, the technologies of vacuum drying, cellulose enzymolysis and supercritical extraction are effectively integrated, so that low-temperature, low-energy, green, efficient and continuous extraction of the active ingredients in the grape seeds is realized. The grape seed oil and the proanthocyanidin extract are widely applied to the fields of medicine, food and health-care food, and have wide prospects.

Description

technical field [0001] The invention relates to a new method for continuously extracting active ingredients of grape seed oil and proanthocyanidins from grape seeds. Background technique [0002] Grape seeds are the product obtained after the grapes are separated from the skin and dried. Grape seeds contain grape seed oil, proanthocyanidins and other biologically active ingredients. Grape seed oil content is about 14%. Grape seed oil is rich in unsaturated fatty acids, which can lower human serum cholesterol and blood pressure. It is a high-grade health-care edible oil; grape seed is also rich in proanthocyanidins (according to the variety and quality, The mass fraction ranges from 3% to 12%), proanthocyanidins are a kind of natural polyphenolic compounds belonging to biflavone derivatives, which exist in a variety of plants, and their antioxidant and free radical scavenging abilities in the human body are 50% of vitamin E times, and also has the functions of protecting ca...

AI Technical Summary

Problems solved by technology

[0003] In terms of extracting the effective components of grape seeds, traditional solvent extraction, distillation, pressing and other processes are adopted, with high extraction temperature, many operation steps, high energy consumption and large loss of active components.

Some people also use supercritical carbon dioxide extraction technology to extract grape seed oil and proanthocyanidins, but there are also problems such as high cost, discontinuous extraction, and low yield, which prevent mass production

On the other hand, enzyme preparations have been applied to the extraction of active ingredients in grape seeds, but only using enzyme preparations for enzymatic hydrolysis, without organic combination with advanced extraction and separation technologies such as supercritical extraction and microwave extraction, the effect is not satisfactory