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Method for extracting luteolin from peanut roots, stems, leaves and shells

A technology of luteolin and peanut roots, applied in the direction of organic chemistry, can solve the problems of no extraction and utilization of luteolin, no specific active ingredients, low technical content, etc., achieve low equipment requirements, reduce production costs, The effect of improving economic efficiency

Inactive Publication Date: 2011-05-04
彭国平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the raw materials for extracting luteolin have not been applied to peanut roots, stems, leaves and other materials. The utilization of peanut roots is mainly resveratrol, and the utilization of stems and leaves are all crude extracts. No specific active ingredients, technology Low content, low added value, not involved in the extraction and utilization of luteolin

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] After harvesting peanuts from large and small seed peanuts on August 25, cut the peanut roots and dry them, crush them to a powder of about 10 mesh, take 5kg of the whole dried peanut root powder, add 75L of 75% ethanol, heat and reflux for 3h, filter, Add 50L of 75% ethanol to the filter residue, heat and reflux for 1.5h, filter, combine the filtrate, and concentrate to a syrup under reduced pressure to obtain 5.6L of concentrate, add 28L of boiling water, stir, cool to 8°C, filter, and heat the filtrate to 50°C. Decolorize with activated carbon for 24 hours, filter, concentrate to extract under reduced pressure, collect the extract; absorb the extract with KLFC-150 macroporous resin, eluted with 75% ethanol, collect the eluent containing luteolin, and reduce the pressure Concentrate the eluate to obtain a crude luteolin product; the crude product is adsorbed with KLFC-150 macroporous resin and eluted with 75% ethanol to obtain 28L of luteolin component, add 30L of waste...

Embodiment 2

[0043] After harvesting peanuts of large and small seed peanut varieties on August 25, cut the peanut stems and dry them, crush them to a powder of about 10-20 mesh, take 5kg of the whole dried peanut stem powder, add 75L of 75% ethanol, heat and reflux for 3h , Filter, add 50L 75% ethanol to the filter residue, heat and reflux for 1.5h, filter, combine the filtrate, concentrate under reduced pressure to a syrupy state to obtain 5.8L of concentrate, add 30L of boiling water, stir, cool to 8°C, filter, and heat the filtrate to 50℃, decolorize with activated carbon for 24h, filter, add activated carbon for decolorization for 24h, filter, concentrate the filtrate under reduced pressure to extract, collect the extract; the extract is adsorbed with KLFC-150 macroporous resin, eluted with 75% ethanol, and collected The eluate of the luteolin component was concentrated under reduced pressure to obtain the crude luteolin product; the crude product was adsorbed with KLFC-150 macroporous ...

Embodiment 3

[0045] After harvesting peanuts of large and small seed peanuts on August 25, cut the peanut leaves and dry them, crush them to a powder of about 10-20 mesh, take 5kg of the whole dried peanut stem powder, add 75L of 75% ethanol, heat and reflux for 3h , Filter, add 50L 75% ethanol to the filter residue, heat and reflux for 1.5h, filter, combine the filtrate, concentrate under reduced pressure to a syrupy state to obtain 5.8L of concentrate, add 30L of boiling water, stir, cool to 8°C, filter, and heat the filtrate to 50℃, decolorize with activated carbon for 24h, filter, add activated carbon for decolorization for 24h, filter, concentrate the filtrate under reduced pressure to extract, collect the extract; the extract is adsorbed with KLFC-150 macroporous resin, eluted with 75% ethanol, and collected The eluate of the luteolin component was concentrated under reduced pressure to obtain the crude luteolin product; the crude product was adsorbed with KLFC-150 macroporous resin an...

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Abstract

The invention relates to a method for extracting luteolin from peanut roots, stems, leaves and shells, comprising the following steps: washing materials comprising peanut roots, stems, leaves and shells, removing impurities in the peanut roots, stems, leaves and shells, and grinding the peanut roots, stems, leaves and shells subject to impurity removal; extracting by using 75% ethanol, filtering, decoloring, and concentrating at reduced pressure; precipitating by using hot water, filtering, heating filtrate, and concentrating at reduced pressure; absorbing by using KLFC-150 macroporous resin, and eluting by using 75% ethanol; concentrating elution solution at reduced pressureto obtain crude luteolin; dissolving the crude luteolin in ethanol, adding water to dilute the crude luteolin, recovering the ethanol, concentrating, crystallizing, and recrystallizing to obtain the high-purity luteolin product. The operation process is mainly characterized in that the peanut roots, stems, leaves and shells are used as extraction raw materials and are low-cost sustainable resources, the 75% ethanol is used as extraction solvent and eluent, and the product contains no toxic solvent and other residue, is safe and environmentally friendly and is low in production cost and high in yield.

Description

Technical field [0001] The invention relates to a method for extracting luteolin from peanut roots, stems, leaves and shells, and belongs to the technical field of natural product chemistry. Background technique [0002] Luteolin, originally an effective ingredient isolated from the Chinese herbal medicine Dracocephalumintegrifolium Bge. for the treatment of bronchitis in Xinjiang, and Ajugadecumbens Thunb from Anhui, is a weakly acidic tetrahydroxyflavone Compounds are widely distributed in nature and can be isolated from a variety of natural medicinal plants, vegetables, and fruits. The chemical analysis of standard procedures shows that compared with quercetin and capsaicin under equimolar concentration, luteolin has the strongest antioxidant activity, and its antioxidant properties can be used to inhibit the failure of oily foods. . The results of pharmacology and clinical experiments show that luteolin has anti-bacterial, antiviral, lowering blood lipid and cholesterol, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D311/30C07D311/40
Inventor 彭国平
Owner 彭国平
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