Method for extracting bamboo leaf flavonoid substance from lophatherum gracile

Abstract

The present invention relates to extracting bamboo leaf flavonoids from Bamboo glabra, which mainly proceeds according to the following steps: 1. Harvest fresh Bamboo leaves and dry the leaves; 2. Grind them into bamboo leaf powder, and put the bamboo leaf powder into a cylinder In the glass jar, the bamboo leaf powder should account for less than 1/2 of the volume of the glass jar; 3. Add alcohol at 85°C to 90°C to the glass jar, and stir while adding the alcohol to make the bamboo leaf powder and alcohol mix evenly until The mixed liquid level reaches 2/3 of the height of the glass tank, and becomes a mixed liquid slurry; 4. Cover the mixed liquid slurry, stand for extraction for 4 to 5 hours, stir once every 1 hour, and then pressurize and filter with a filter cloth. Remove the slag, take the filtered juice, filter again, and centrifuge to clarify to obtain the upper clarified liquid; 5. Put the clarified liquid into the distillation tower, the distillation temperature is 60 ° C ~ 65 ° C, after the alcohol is volatilized, collect the yellow powder at the bottom of the tower, and at the same time The alcohol is recovered by cooling at the top of the tower.

Description

technical field [0001] The invention relates to an extracting substance of bamboo leaf bamboo, in particular to a method for extracting flavonoids from bamboo leaves, and belongs to the technical field of medicine. Background technique [0002] Danzhuye, the name of traditional Chinese medicine. It is a perennial herbaceous plant of the family Poaceae. The middle part of the fibrous root expands into a spindle-shaped fleshy tuber, yellow-white; the leaves are lanceolate, 2-75px wide, the veins are parallel, with obvious small transverse veins, the leaves are glabrous or have spiny hairs, and there are short setae at the edge; the panicles are terminal , the spikelets are nearly sessile, arranged slightly on the side of the cob, and fall off entirely; the caryopsis is elliptic. Bamboo leaves are mainly born in the damp place under the hillside forest, and are distributed in the provinces and regions south of the Yangtze River. Bamboo leaves have the effect of clearing away...

AI Technical Summary

Problems solved by technology

Bamboo leaves are resistant to barrenness, like warmth and humidity, and are slightly tolerant to shade and sun. In an environment with too much sunlight, the growth will be poor, often manifested as low plant height, reduced tillering ability, dry and yellowish leaf color, etc., and reduced ornamental value.