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

Method for preparing antioxidative active extractive of sweet potato leaves

A technology of antioxidant activity and sweet potato leaves, applied in the direction of medical preparations containing active ingredients, anti-toxins, drug combinations, etc., can solve the problems of unreasonable utilization of stems, leaves and vines, pollution of the environment, waste of resources, etc., and achieve significant The effect of economic and social benefits

Active Publication Date: 2012-01-04
JIANGSU ACAD OF AGRI SCI
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The stems, leaves and vines after deep processing and utilization of sweet potatoes cannot be rationally utilized, and most of them are discarded by the side of the road in the field, which not only pollutes the environment, but also causes a great waste of resources

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing antioxidative active extractive of sweet potato leaves
  • Method for preparing antioxidative active extractive of sweet potato leaves
  • Method for preparing antioxidative active extractive of sweet potato leaves

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037]Select 1 kg of Ningzishu No. 1 leaf variety, collect and wash fresh sweet potato leaves, dry and crush them through a 60-mesh sieve for use; decolorize and degrease the sieved sweet potato leaf powder with petroleum ether, and the amount of petroleum ether is 5: 1, the treatment time was 3 hours; the decolorized defatted sweet potato leaf powder was added to 60% ethanol aqueous solution, put into microwave equipment and carry out leaching, microwave power 300W, sweet potato leaf powder: ethanol aqueous solution was 1: 25 (by weight percentage), Extract 2 times, each extraction time is 5 minutes. Combine the extracts, filter, recover the solvent from the filtrate, and concentrate under reduced pressure in a vacuum with a vacuum degree of -0.02 to 0.08Mpa and a temperature of 40°C to obtain the crude extract of sweet potato leaves; after obtaining the crude extract of sweet potato leaves, use AB-8 type macroporous resin for adsorption. Wash the macroporous resin with deio...

Embodiment 2

[0044] Select 1 kg of the Ningshu 43-8 leaf variety, collect and wash the fresh sweet potato leaves, dry and pulverize through a 60-mesh sieve for use; decolorize and degrease the sieved sweet potato leaf powder with petroleum ether, and the amount of petroleum ether is 4: 1, the treatment time was 2.5 hours; the decolorized defatted sweet potato leaf powder was added to 70% ethanol aqueous solution, put into microwave equipment and carry out leaching, microwave power 250W, sweet potato leaf powder: ethanol aqueous solution was 1: 25 (by weight percentage), Extract 2 times, each extraction time is 5 minutes. Combine the extracts, filter, recover the solvent from the filtrate, and concentrate under reduced pressure in a vacuum with a vacuum degree of -0.02 to 0.08Mpa and a temperature of 35°C to obtain the crude extract of sweet potato leaves; after obtaining the crude extract of sweet potato leaves, use a D101 macroporous The resin is adsorbed. Wash the macroporous resin with...

Embodiment 3

[0046] Select 0.5 kg of Ningzishu No. 1 leaf variety, collect and wash fresh sweet potato leaves, dry and crush them through a 40-mesh sieve for use; decolorize and degrease the sieved sweet potato leaf powder with petroleum ether, and the amount of petroleum ether is 3: 1, the treatment time was 3 hours; the decolorized defatted sweet potato leaf powder was added to 70% ethanol aqueous solution, put into microwave equipment and carry out leaching, microwave power 300W, sweet potato leaf powder: ethanol aqueous solution was 1: 25 (by weight percentage), Extract 3 times, each extraction time is 3 minutes. Combine the extracts, filter, recover the solvent from the filtrate, concentrate under reduced pressure in vacuum, the vacuum degree is -0.02-0.08Mpa, and the temperature is 35°C to obtain the crude extract of sweet potato leaves; after obtaining the crude extract of sweet potato leaves, use AB-8 type macroporous resin for adsorption. Wash the macroporous resin with deionized...

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 method for preparing an antioxidative active extractive of sweet potato leaves, and belonging to the field of agriculture products processing. The method comprises the following steps: drying and crushing fresh sweet potato leaves; performing microwave assistant extraction after the decoloring and degreasing treatment is carried out; decompressing and concentrating extract in vacuum; chromatographing through a column, and absorbing by maroporous resin; collecting eluent; decompressing and concentrating the eluent in vacuum to obtain extract of the sweet potato leaves; and atomizing and drying the extract to obtain powdered extractive of the sweet potato leaves. The product is powdered, has the unique smell of the sweet potato leaves, contains 65 to 75 percent oftotal phenol, and contains chlorogenic acid and 3,5-O-dicaffeoylquinic acid. The method adopts mass waste sweet potato leaves to prepare the extractive with strong antioxidative activity, turns wasteinto wealth, is a green industry, has simple process, no need of larger equipment investment and high extracting rate of antioxidative active substances, and is applicable to industrial production.

Description

technical field [0001] The invention relates to a preparation method of a plant extract with antioxidant activity, in particular to a preparation method of a sweet potato leaf antioxidant active extract, which belongs to the field of agricultural product processing. Background technique [0002] Modern medical research shows that sweet potato [lpomoea batatas Lam.] leaves can promote gastrointestinal peristalsis, stimulate digestion, treat constipation, promote cholesterol excretion, prevent cardiovascular fat deposition, maintain arterial elasticity, protect digestive tract, respiratory tract and joint cavity lubrication and other effects. According to Chinese traditional medicine data, sweet potato stems and leaves are used as medicine. Its medicinal properties are slightly sweet and astringent, and it is non-toxic. And red belly, diarrhea and other symptoms. According to domestic and foreign data, sweet potato leaves have health functions such as enhancing immune functi...

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 Patents(China)
IPC IPC(8): A61K36/8945A61P39/06A61K127/00
Inventor 宋江峰章英李大婧刘春泉吴海虹朱丹宇刘春菊李志强江宁
Owner JIANGSU ACAD OF AGRI SCI
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