Method for preparing pomegranate seed oil rich in vitamin E

Abstract

The invention belongs to the technical field of pomegranate seed oil extraction, and aims at providing a method for preparing pomegranate seed oil rich in vitamin E. the pomegranate seed oil prepared by using the method is high in oil oxidation resistance and high in quality and can be used in medical cosmetics. The method comprises the following steps: firstly, adding a certain amount of vitamin C, tea polyphenol and vitamin E for anti-oxidation protection into pomegranate seeds, crushing pomegranate seeds, heating and drying to make pomegranate seed powder; secondly, extracting the pomegranate seed powder by using a supercritical carbon dioxide solvent, thereby obtaining the pomegranate seed oil rich in vitamin E. Due to addition of tea polyphenol and vitamin E in pretreatment before extraction, the punicic acid and the rich vitamin E in the pomegranate seeds can be protected, and thus the pomegranate seed oil rich in punicic acid and vitamin E is prepared. The pomegranate seed oil prepared by using the method is high in nutrient component content and high in oxidation resistance, can solve the problems that the pomegranate seed oil is easy to deteriorate because of oxidation and is poor in stability, and can be used in the medical cosmetic industry.

Description

technical field [0001] The invention belongs to the technical field of pomegranate seed oil extraction, and in particular relates to a preparation method of pomegranate seed oil rich in vitamin E. Background technique [0002] In daily life, some unfavorable factors such as unhealthy diet, frequent exposure to the sun, stress, environmental pollution, etc., make our living organisms be threatened by free radical oxidation everywhere. Free radicals are indispensable particles in the metabolic activities of life, but excessive free radicals will decompose cells and tissues through oxidation, affect metabolic functions, and cause degenerative changes in the body. In mild cases, oxidation phenomena such as dull complexion and water shortage will occur Seriously, it will cause different health problems, such as common arteriosclerosis, diabetes, cataract, cardiovascular disease, Alzheimer's disease, arthritis, cancer, etc. Therefore, we should take in enough antioxidants to remov...

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Problems solved by technology

[0006] Chinese patents "A method of producing high-purity punicic acid" (CN100344601C) and "Preparation method of pomegranate seed oil with high content of conjugated unsaturated trienoic acid" (CN100510041C) purify pomegranate through supercritical extraction, rectification and separation steps acid and impurity removal to obtain high-purity punicic acid, but they only focused on the purification of the main component punicic acid, and did not involve the extraction and protection of antioxidant vitamin E

201310045191.9 Magnetic field assisted supercritical CO 2 The method of extracting sunflower seed oil removes the impurities in the sunflower seeds, then mechanically crushes them, and then sieves and classifies them to obtain sunflower seed powder; mixes VE evenly into the pretreated sunflower seed powder, and then puts it in a magnetic field for processing , wherein the magnetic field treatment temperature is 48-52°C, the magnetic field strength is 7800-8200Gs, and the magnetization time is 13-15min; the above-mentioned patent points out that adding a certain amount of VE before extraction can resist oxidation and reduce the acid value, but because pomegranate seeds The oil contains a large amount of conjugated trienoic acid, which is different from linoleic acid in sunflower oil. It is particularly easy to oxidize during processing. The large amount of VE will affect the naturalness of the oil, and its function is single, and the inhibitory effect is limited, so simple Adding VE does not inhibit oxidation well

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