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A kind of natural antioxidant of walnut green barley phenols and its preparation method and application

A technology of natural antioxidants, walnut green skin, applied in food ingredients as antioxidants, applications, cosmetic preparations, etc., can solve the problem of inability to adapt to the development trend of active ingredient extraction technology, decreased antioxidant activity of phenolic substances, low extraction rate, etc. problem, to achieve strong free radical scavenging ability and antioxidant activity, stable activity and efficacy, high activity

Active Publication Date: 2020-02-07
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these preparation methods in the prior art have defects such as low extraction rate, low purity, high cost, and decreased antioxidant activity of phenolic substances during the preparation process, which cannot adapt to the development trend of modern active ingredient extraction technology

Method used

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  • A kind of natural antioxidant of walnut green barley phenols and its preparation method and application
  • A kind of natural antioxidant of walnut green barley phenols and its preparation method and application
  • A kind of natural antioxidant of walnut green barley phenols and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Select fresh green walnut peels, wash them with water, and dry them in an electric heating constant temperature blast drying oven at 50°C and a wind speed of 2.5 m / s until the moisture content drops below 12%, and then pass through a 50-mesh sieve after crushing to obtain walnuts Qingpi powder, sealed and stored in a dry place at room temperature and protected from light;

[0038](2) Weigh walnut green husk powder, use pure water as solvent, the ratio of solid to liquid is 1:40, and extract with ultrasonic-microwave synergy at 50°C for 1 hour, the microwave power is 400W, the microwave treatment time is 5min, and the ultrasonic power is 700W, ultrasonic treatment time was 5min; walnut green bark phenolic substance extract was obtained; the polyphenol content in the obtained extract was 68.35 mg / g DW, and its scavenging rate for ABTS free radical was 77.31%.

[0039] Set the solid-liquid ratio in the above step (2) to 1:20, 1:30, 1:40, 1:50, 1:60, other steps and par...

Embodiment 2

[0042] (1) Select fresh green walnut peels, wash them with water, and dry them in an electric heating constant temperature blast drying oven at 50°C and a wind speed of 2.5 m / s until the moisture content drops below 12%, and then pass through a 50-mesh sieve after crushing to obtain walnuts Qingpi powder, sealed and stored in a dry place at room temperature and protected from light;

[0043] (2) Weigh walnut green husk powder, use pure water as solvent, the ratio of solid to liquid is 1:40, and extract with ultrasonic-microwave synergy at 50°C for 1 hour, the microwave power is 400W, the microwave treatment time is 5min, and the ultrasonic power is 700W, ultrasonic treatment time is 5min; obtain walnut green bark phenolic substances extract;

[0044] (3) The walnut green bark polyphenol crude extract obtained in step (2) is subjected to microporous membrane filtration, the operating conditions are temperature 30±5°C, filter membrane pore size 0.45µm, pressure 0.1MPa;

[0045]...

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Abstract

The invention belongs to the technical field of preparing and processing additives, and discloses a walnut green seedcase phenol natural antioxidant and a preparing method and application thereof. The preparing method includes the steps that fresh walnut green seedcase is used as a raw material, selected, washed, dried, broken, extracted through ultrasound and microwave synergic assistance, filtered with a millipore filtering film, purified with macroporous resin, and freeze-dried in vacuum to obtain the walnut green seedcase phenol natural antioxidant. The phenol content in the obtained product is 85.25% or more, and the antioxidant activity retention rate is 95% or more. The prepared phenol antioxidant product is natural and nontoxic, has higher free radical scavenging capacity and antioxidant activity than Vc and BHT and can be widely used in the fields of food, healthcare products, medicine, cosmetics and daily necessities.

Description

technical field [0001] The invention belongs to the technical field of health food processing, and in particular relates to a walnut green bark phenolic natural antioxidant and a preparation method and application thereof. Background technique [0002] Walnut green skin, also known as green walnut skin and Qinglongyi, is pungent in taste, bitter, astringent and flat in nature. Walnut green peel has been recorded in "Compendium of Materia Medica" to treat "confidential pain", "shortness of breath", "lumbar and foot pain", etc. Walnut green peel is used in the folks in my country to treat women's dysmenorrhea and toothache due to wind and fire , advanced cancer pain, stomach pain and other symptoms. Juglone and its derivatives extracted from walnut green bark are medically used to treat esophageal cancer, gastric cancer, liver cancer and spontaneous breast cancer. Walnut green bark contains a variety of ingredients that have antibacterial effects on plant pathogens, and juglo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K8/9789A61Q19/08A23L3/349
CPCA23L3/349A23V2002/00A61K8/97A61K36/52A61K2236/13A61K2236/17A61K2236/331A61K2236/51A61K2236/53A61K2236/55A23V2200/02A23V2200/30A23V2250/21A23V2250/2132A23V2300/14
Inventor 王杰莫宇丽田平平秦晓艺
Owner SOUTH CHINA AGRI UNIV
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