Preparation method of Nitraria tangutorum Bobr. antioxidant active extract, and products and applications thereof

Abstract

The invention relates to a preparation method of a Nitraria tangutorum Bobr. antioxidant active extract, and products and applications thereof. The preparation method comprises following steps: Nitraria tangutorum Bobr. dried fruits and an ethanol aqueous solution with a volume concentration ranging from 30 to 95% are mixed at a solid-liquid ratio of 1g:(5-30)ml for 1 to 4h of cold leaching so as to extract the mixture of Nitraria tangutorum Bobr. dried fruits and the ethanol aqueous solution; an obtained extracted solution is filtered, and an obtained filtrate is concentrated; an obtained concentration product is dissolved in water, and an obtained solution is subjected to adsorption separation using a chromatographic column loaded with AB-8 macroporous resin, wherein the mass ratio of the obtained concentration product to AB-8 macroporous resin is controlled to be 1:60-1:100; the chromatographic column is subjected to elution with water until an obtained eluent becomes colourless, an ethanol aqueous solution with a volume concentration of 10 to 80% is used for elution, and ethanol eluent is collected, wherein the volume of the ethanol aqueous solution is 10 to 15 times of the column volume; the ethanol eluent is subjected to concentration drying so as to obtain the Nitraria tangutorum Bobr. antioxidant active extract. The preparation method of the Nitraria tangutorum Bobr. antioxidant active extract is capable of increasing extract yield, and increasing the antioxidant activity of the Nitraria tangutorum Bobr. antioxidant active extract.

Description

technical field [0001] The invention relates to the technical field of antioxidant active extracts, in particular to a preparation method of Nitraria antioxidative active extracts and its products and applications. Background technique [0002] Nitraria is a general designation for various small deciduous shrubs of the genus Nitraria in the family Zygophyllaceae. The main species are N. sibirica Pall. and N. tangutorum Bobr., etc. In my country, it mainly grows in the desert or semi-desert areas of Inner Mongolia, Qinghai, Xinjiang, Gansu and other places. It not only has the effect of windbreak and sand fixation, but also has high medicinal and edible value. Strengthen the spleen and stomach, nourish and strengthen, regulate menstruation and blood circulation, and promote lactation. It is often used to treat weak spleen and stomach, indigestion, neurasthenia, high blood pressure, dizziness, and colds. Modern studies have found that Nitraria thorn is rich in flavonoids and an...

AI Technical Summary

Problems solved by technology

[0003] The preparation method of the antioxidant Nitraria extract in the prior art adopts the method of combining high-pressure homogenization technology, membrane separation technology and macroporous resin separation technology. Although the antioxidant Nitraria extract can be extracted, the extract is obtained The rate is low, only 0.1% to 0.5%, and the antioxidant activity of the prepared extract is not ideal.

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