Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Natural anti-oxidant extracted from walnut leaflet and extracting method

A technology of natural antioxidants and extraction methods, applied in climate change adaptation, preservation of meat/fish with chemicals, food science, etc., can solve the problems of teratogenicity, toxicity, carcinogenicity, etc., and achieve low production cost and good antioxidant effect , the effect of broad application prospects

Inactive Publication Date: 2008-09-24
KUNMING UNIV OF SCI & TECH
View PDF0 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the 1970s, people have continuously found that synthetic antioxidants have certain toxicity, and some can even cause teratogenicity and cancer. Therefore, more and more countries have begun to restrict or prohibit the use of certain synthetic antioxidants.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Wash walnut tender leaves (one bud and one leaf to one bud and six leaves, the same below) with water, dry or dry in the sun, grind to about 40 mesh through a pulverizer, add ethanol aqueous solution (70%, ethanol / water, v / v) 8kg, insulated and refluxed in a constant temperature water bath at 50°C for about 5 hours, separated by centrifugal filtration, collected the filtrate, and the residue was extracted three times in the same way, combined the filtrate, and the filtrate was concentrated under reduced pressure in a vacuum ( 80°C), recover ethanol, redissolve the concentrated paste in distilled water (1:3 ratio, v / v), centrifugal filter to remove water-insoluble matter, and extract the aqueous solution with ethyl acetate (1:1 ratio each time, v / v) five times, the extracts were combined, concentrated under vacuum (80°C) and dried, and ethyl acetate was recovered to obtain a concentrated paste, which was then vacuum-dried (60°C) to obtain light yellow Young walnut leav...

Embodiment 2

[0018] Wash the young walnut leaves with water, dry or dry them in the sun, and crush them to about 40 meshes by a pulverizer. Add 9 kg of ethanol aqueous solution (70%, ethanol / water, v / v) to 1 kg of crushed products, and place them in a constant temperature water bath at 45 ° C. Medium heat preservation and reflux extraction for about 5 hours, centrifugal filtration and separation, collecting the filtrate, the residue was extracted three times in the same way, and the filtrate was combined, the filtrate was concentrated under vacuum and reduced pressure (80°C), the ethanol was recovered, and the concentrated paste was dissolved again In distilled water (1:4 ratio, v / v), centrifugal filtration removes water-insoluble matter, and the aqueous solution is extracted with ethyl acetate (1:1 ratio each time, v / v) five times, and the combined extracts are vacuum-reduced. Concentrate under pressure (80°C) and dry, recover ethyl acetate to obtain a concentrated paste, and then vacuum-d...

Embodiment 3

[0021] Wash the young walnut leaves with water, dry or dry them in the sun, and crush them to about 40 meshes by a pulverizer. Add 10 kg of ethanol aqueous solution (70%, ethanol / water, v / v) to 1 kg of crushed products, and place them in a constant temperature water bath at 40 ° C. Medium heat preservation and reflux extraction for about 5 hours, centrifugal filtration and separation, collecting the filtrate, the residue was extracted three times in the same way, and the filtrate was combined, the filtrate was concentrated under vacuum and reduced pressure (80°C), the ethanol was recovered, and the concentrated paste was dissolved again In distilled water (1:5 ratio, v / v), centrifugal filtration removes water-insoluble matter, and the aqueous solution is extracted with ethyl acetate (1:1 ratio each time, v / v) five times, and the combined extracts are vacuum-reduced. Concentrate under pressure (80°C) and dry, recover ethyl acetate to obtain a concentrated paste, and then vacuum-...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a natural antioxidant extracted from the young leaf of a walnut and an extracting method. After the young leaf of the walnut seed is washed, through drying or baking, and smashing, the smashed product is added with ethanol water, and the heat preservation, the circumfluence and the digestion are performed in the water bath at 40 to 50 DEG C for five hours, filtrate and residue are filtered, separated and collected, and after being extracted by the same method for three times, the filtrate which is decompressed and concentrated with vacuum is incorporated, ethanol is recycled, a concentrated pasty object is redissolved in distilled water, the water-insoluble is removed through centrifugal filtration, the aqueous solution is extracted by ethyl acetate for five times, the extract liquor is incorporated, the ethyl acetate is recycled through being decompressed, concentrated and dried in vacuum, thereby obtaining the concentrated pasty object, the pasty object is dried in vacuum again, thus, a natural antioxidant extracted from festucine walnut leaves is obtained. The natural antioxidant extracted from the young leaf of the walnut has better antioxidation, is rich in bioactivators, such as walnut quinine, tannin, flavones, etc., the natural antioxidant is safe and has high efficiency, low production cost, rich extractive materials, and wide application prospect.

Description

technical field [0001] The invention relates to the technical field of food antioxidants, in particular to natural antioxidants extracted from young walnut leaves and an extraction method. Background technique [0002] Antioxidants are a class of substances that can effectively prevent or delay auto-oxidation, and are widely used in the processing of fats and oily foods. Traditional antioxidants are mainly chemically synthesized antioxidants such as butyl hydroxyanisole (BHA) and dibutyl hydroxymethyl ether (BHT). However, since the 1970s, people have continuously found that synthetic antioxidants have certain toxicity, and some can even cause teratogenicity and cancer. Therefore, more and more countries have begun to restrict or prohibit the use of certain synthetic antioxidants. [0003] Many plants contain natural antioxidant components, which are far less toxic than synthetic antioxidants. The development and utilization of natural antioxidants has become the developme...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): A23L3/3472A23L1/28A23L2/44A23D7/06A23D9/06A23B4/18A23L33/105
CPCY02P60/85Y02A40/90
Inventor 彭春秀龚加顺刘海明
Owner KUNMING UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com