Method for extracting myricetin-3-O-rutinose from taxus mairei leaves

A technology of Taxus chinensis and rutum sugar is applied in the field of extracting myricetin-3-O-rutum sugar, and the extraction method is simple and easy to implement.

Active Publication Date: 2013-04-10
NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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[0011] A method for extracting myricetin-3-O-rutinose from southern yew leaves. Firstly, fresh southern yew leaves are dried at 50°C for 24 hours, crushed, passed through a No. 8 sieve into powder, and weighed 50g, put into the supercritical extraction kettle; in the supercritical extraction kettle, the extraction temperature is 28°C, CO 2 The fluid pressure is 30MPa, the entrainer ethanol flow rate is 0.27 ml / min, extract for 1.5h to obtain the extract, add 10ml of methanol to the extract to absorb as the absorption liquid, and the absorption liquid is chromatographed with AB-8 resin (commercially available), AB-8 The resin is weakly polar, with a surface area of ​​480-520 (m2 / g), a particle radius of 13-14nm, and a water content of 64%. After chromatography, it is eluted with ethanol with a concentration of 80% by mass to obtain the first eluent. The first eluent was concentrated under reduced pressure at 500 Pa for 60 minutes to obtain the first concentrated solution. The f...

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Abstract

The invention discloses a method for extracting myricetin-3-O-rutinose from taxus mairei leaves. The method comprises the steps of using a supercritical extraction kettle to extract, using methyl alcohol to absorb, using AB-8 resin to conduct chromatography, using 100-mesh polyamide to conduct the chromatography, collecting an eluent at 6-9min, concentrating and drying, and obtaining a white crystallized compound of myricetin-3-O-rutinose. The extracting method is simple and easy to implement, and the purity of myricetin-3-O-rutinose in the extracted white crystallized compound reaches 99.76%.

Description

technical field [0001] The invention relates to the extraction technology of plant flavonoids, in particular to a method for extracting myricetin-3-O-rutinose from southern yew leaves. Background technique [0002] Taxus leaves contain medicinal ingredients such as paclitaxel, taxoflavones and taxus polysaccharides, and taxoflavones contain a common mother nucleus C 6 -C 3 -C 6 It has the functions of regulating the cardiovascular system, anti-inflammatory and anti-immune effects, anti-microbial effects, effects on peptic ulcer and anti-tumor effects. The Chinese invention patent with the authorization number ZL200910157034.0 discloses an extract of leaves of Taxus chinensis and its extraction method. The main components of the extract include rutin-3-O-quercetin and rutin-3-O-kaempferol , rutin-3-O-myricetin, kaempferol-7-O-glucose and glucose-7-O-quercetin; extraction methods include leaf drying, crushing and sieving, immersion in ethanol solvent, ultrasonic extraction...

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Application Information

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IPC IPC(8): C07H17/07C07H1/08
CPCY02P20/544Y02P20/54
Inventor 王强阮晓
Owner NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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