Method for extracting polyphenol from canna edulis ker waste residue

A kind of canna, waste residue technology

Inactive Publication Date: 2011-08-31
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Canna taro waste residue is the residue left after extracting starch from plantain taro. These waste residues have high water content and are easy to ferment. Except for a small amount that is processed into feed, most of them are thrown away as waste. This not only causes a huge waste of resources, but also seriously polluted the local environment

Method used

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  • Method for extracting polyphenol from canna edulis ker waste residue
  • Method for extracting polyphenol from canna edulis ker waste residue
  • Method for extracting polyphenol from canna edulis ker waste residue

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Effect test

Embodiment 1

[0021] Be that 70% ethanol washes canna waste residue with the volume fraction, until with phenol-sulfuric acid method (see Liu Lichao, Huang Honglin, Lai Zhengquan, Liao Huijun. Phenol sulfuric acid method is measured gardenia water-soluble polysaccharide content. Anhui Medicine, 2005, 9 (11 ): 831-832) to detect the waste residue as negative; then the filter residue was dried at 20°C, pulverized, and passed through a 30-mesh sieve to obtain the pulverized filter residue; 10g of the filter residue was weighed, and 500ml mass fraction was added to be an aqueous solution of 2.5% sodium sulfite , stirring and extracting at 800 rpm at 2°C for 30 minutes, filtering, re-extracting the residue once, and combining the filtrates to obtain a polyphenol extract from canna polyphenols; after concentrating the polyphenol extract from canna polyphenols under reduced pressure, vacuum drying at 40°C to obtain polyphenols from canna polyphenols phenol. Use infrared spectrum to identify the pr...

Embodiment 2

[0023] Wash the canna waste residue repeatedly with ethanol with a volume fraction of 75%, until the waste residue detected by the phenol-sulfuric acid method is negative; then the filter residue is dried at 25°C, crushed, and passed through a 60-mesh sieve to obtain the crushed filter residue; 10g filter residue, add 400ml mass fraction and be the aqueous solution of 1% sodium sulfite, power is 1000W microwave treatment 30 seconds, filter, residue is extracted once again, merge filtrate, obtain canna polyphenol extract; After concentrated under pressure, freeze-dried to obtain the polyphenols of canna taro.

Embodiment 3

[0025] Wash the canna waste residue repeatedly with ethanol with a volume fraction of 80%, until the waste residue detected by the phenol-sulfuric acid method is negative; then the filter residue is dried at 30°C, crushed, and passed through an 80-mesh sieve to obtain the crushed filter residue; 10g filter residue, add 500ml mass fraction and be the aqueous solution of 5% ascorbic acid, frequency is 40000Hz, power is the ultrasonic extraction of 100W 10 minutes, filter, residue is extracted again, merge filtrate, obtain canna polyphenol extract; After the polyphenol extract is concentrated under reduced pressure, it is freeze-dried to obtain the polyphenol of canna taro.

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Abstract

The invention relates to a method for extracting polyphenol from canna edulis ker waste residue in the field of chemical industry, which comprises the following steps: washing the waste residue with ethanol until detecting the waste residue as the negative by a phenol-sulfuric acid method; drying, crushing and sieving the washed filter residue to obtain the crushed filter residue; adding aqueous solution of ascorbic acid, sodium sulfite or sodium pyrosulfite into the filter residue, extracting, and filtering to obtain polyphenol extracting solution of canna edulis ker; and concentrating the extracting solution, and performing vacuum or freeze drying to obtain the polyphenol of the canna edulis ker. The method is time-saving and high-efficiency, and has convenient operation and high extraction efficiency.

Description

technical field [0001] The invention relates to a method for extracting polyphenols in the field of chemical industry, in particular to a method for extracting polyphenols from the waste residue of plantain taro. Background technique [0002] Canna taro polyphenols are the general term for polyphenolic compounds contained in canna taro. Plant polyphenols have been proven to have anti-oxidation, hemostasis and anti-inflammation, detoxification and anti-bacteria, anti-caries, anti-allergy, anti-mutation, anti-tumor, anti-cancer, anti-nicotine, treatment of cataract and cardiovascular diseases, promotion of immunity, anti-aging, sun protection, Whitening and moisturizing, anti-wrinkle and maintaining skin elasticity and other important physiological functions, mainly used in anti-tumor drugs, cardiovascular health drugs, anti-viral preparations, anti-diabetes and obesity and other health products, antioxidant food additives, preservatives, color retention Agents, deodorants, e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K36/88A61P3/04A61P3/10A61P9/00A61P31/12A61P35/00A23L3/3472
Inventor 王正武张娟
Owner SHANGHAI JIAOTONG UNIV
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