Extracting method of polyphenol from lotus root

An extraction method and technology of lotus root, applied in the field of extraction of polyphenols from lotus root, can solve the problems of high cost and high production conditions, and achieve the effect of rich nutrition and scavenging free radicals in human body

Inactive Publication Date: 2004-02-04
WUHAN UNIV
View PDF0 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the production of this process requires relatively large-scale production equipment, the cost is expensive, and the production conditions are relatively high.

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
  • Extracting method of polyphenol from lotus root

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] according to figure 1 The present invention is described in further detail:

[0023] according to figure 1 It can be seen that lotus leaf crushing 1 obtains lotus leaf wood 2. Take 20 g of lotus leaf powder, add 160 ml of 70% ethanol solution, adjust the pH to 3, stir and extract in a water bath at 70 ° C (the time is 1 h, 2 h, and 3 h respectively), combine the three filtrates, filter, and discard the filter residue 3, Keep the filtrate 4; adjust the pH of the filtrate to 11, concentrate in a water bath at 70°C until the ethanol is evaporated to remove the concentrated solution 5; then adjust the pH of the concentrated solution to 3 to convert the chlorophyll into water-insoluble pheofolate and remove Precipitate 6, retain the aqueous layer 7. The aqueous layer was extracted twice with twice as much ethyl acetate, the aqueous layer 8 was discarded, and the ethyl acetate layer 9 was retained; the ethyl acetate was evaporated and vacuum-dried to obtain 2.2 g of light ...

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

A process for extracting polyphenol from lotus root includes such steps as pulverizing lotus root, immersing in alcohol solution, heating while stirring, filtering, thermal concentrating, extracting with ethyl acetate, concentrating, drying to obtain coarse product, dissolving in acetone solution, separating and purifying. Its advantages are high quality of product, low cost and no pollution.

Description

Technical field: [0001] The invention relates to the field of biotechnology, in particular to a method for extracting polyphenols from lotus root. Background technique: [0002] As early as the early 1960s, Japanese scientists discovered that tea contains a large number of substances with strong antioxidant activity - tea polyphenols. By the 1980s, the preparation technology of tea polyphenols had made great progress and entered the practical stage of industrial production. At present, there are nearly ten varieties of tea antioxidant products sold in the international market in three dosage forms (water-based, oil-based, powder-based). Since the 1990s, my country has successively developed several tea polyphenol extraction processes and their products, and carried out industrial production. [0003] Lotus root is an important economic crop in China. In the past ten years, the planting area in my country has increased rapidly. There are a lot of polyphenols in lotus root....

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): B01D11/02C07D311/30C07D311/62
Inventor 靳素荣丁佑铭周明全胡中立余作平
Owner WUHAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap