Method for extracting selenium-rich tea polysaccharide by using ultrahigh pressure

A technology of selenium-enriched tea and ultra-high pressure, which is applied in the field of food and medical treatment, can solve the problems of long time consumption, high extraction temperature, and large amount of extraction solvent, and achieve the effect of short extraction time, low extraction temperature and retention of physiological activity

Inactive Publication Date: 2021-07-23
NORTHWEST A & F UNIV
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Problems solved by technology

[0008] In order to overcome the shortcomings of traditional selenium-enriched tea polysaccharides such as high extraction temperature, long time consumption, and large amount of extraction solvent, the present invention provides a method for extracting selenium-enriched tea polysaccharides using ultra-high pressure

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  • Method for extracting selenium-rich tea polysaccharide by using ultrahigh pressure
  • Method for extracting selenium-rich tea polysaccharide by using ultrahigh pressure
  • Method for extracting selenium-rich tea polysaccharide by using ultrahigh pressure

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0028] This embodiment provides a method for extracting selenium-enriched tea polysaccharides using ultra-high pressure, the method steps are:

[0029] Step 1) washing the selenium-enriched tea, drying to 60° C., pulverizing, and then passing through a 60-mesh sieve to make selenium-enriched tea dry powder;

[0030] Step 2) Weigh the dry selenium-enriched tea powder and perform ultra-high pressure extraction with distilled water; the extraction pressure is 200-500MPa, the extraction time is 3-20min, and the solid-liquid ratio of the selenium-enriched tea dry powder to distilled water is 1:20-50g / mL.

[0031] Step 3) Centri...

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Abstract

The invention relates to the technical field of food and medical treatment, in particular to a method for extracting selenium-rich tea polysaccharide by using ultrahigh pressure. The defects of high extraction temperature, long time consumption, large extraction solvent amount and the like of the traditional selenium-rich tea polysaccharide extraction are overcome. According to the method, the selenium-rich tea is used as a raw material, the yield of the selenium polysaccharide is used as an evaluation index, the process conditions of ultrahigh-pressure extraction of the selenium-rich tea polysaccharide are optimized, the optimal extraction process conditions for obtaining the selenium polysaccharide are as follows: the treatment pressure is 400 MPa, the material-liquid ratio is 1: 40, the pressure holding time is 10 minutes, and the highest yield of the selenium polysaccharide is 2.48% under the conditions. Ultrahigh pressure serves as a non-thermal extraction technology, physiological active ingredients in the selenium-rich tea can be kept unchanged to a large extent, and a new means is provided for extraction of polysaccharide of the selenium-rich tea.

Description

[0001] 1. Technical field: [0002] The invention relates to the field of food medical technology, in particular to a method for extracting selenium-enriched tea polysaccharides by using ultra-high pressure. [0003] 2. Background technology: [0004] Selenium-enriched tea is an important source of organic selenium supplementation for the human body, and has multiple effects such as lowering blood sugar, cholesterol, the incidence of cardiovascular diseases, and cancer. [0005] The physiologically active components of selenium-enriched tea mainly include proteins, polysaccharides, polyphenols, selenium and other substances. Among them, polysaccharides and selenium will combine to form organic compounds selenium polysaccharides. Selenium polysaccharides not only greatly reduce the toxicity caused by inorganic selenium, but also have selenium It has dual physiological activities with polysaccharides, is easily absorbed and utilized by the human body, and plays an important role ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/00
CPCC08B37/0003
Inventor 龙芳羽王钰向安妮岳田利袁亚宏任虹冯小平
Owner NORTHWEST A & F UNIV
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