Gastrodia elata extract and preparation method thereof

Abstract

The invention discloses a gastrodia elata extract and a preparation method thereof, and the preparation method comprises the following steps: (1) taking a gastrodia elata medicinal material, and coarsely crushing; (2) adding water, boiling, refluxing, extracting and filtering, continuously adding water into filter residues, boiling, refluxing, extracting and filtering, and combining filtrates; (3) clarifying the filtrate through a ceramic membrane; (4) transferring part of the feed liquid penetrating through the ceramic membrane into ultrafiltration membrane equipment, respectively collecting ultrafiltration membrane trapped fluid and permeated fluid, and performing spray drying on the trapped fluid to obtain a gastrodia elata polysaccharide extract; and (5) transferring the permeate into a nanofiltration membrane for concentration, collecting trapped fluid, and performing spray drying to obtain the gastrodin extract. The gastrodia elata extract prepared by the invention is clear and transparent, is high in gastrodin content, and has a remarkable effect in the aspects of tranquilizing and allaying excitement and the like; and the ultrafiltration interception part contains more gastrodia elata polysaccharide extracts, so that the comprehensive utilization of gastrodia elata can be improved.

Description

technical field [0001] The invention relates to the technical field of plant extraction, in particular to an extract prepared from medicinal and edible plants and a preparation method thereof. Background technique [0002] At present, people's life pressure is increasing, and emotions such as anxiety and tension inevitably affect people's work and life, leading to insomnia. Insomnia is the most common sleep disorder disease. The clinical manifestations are difficulty in falling asleep, often waking up or being unable to sleep again after waking up, early morning awakening, and inability to sleep at night; sleep time is less than 5 hours, often accompanied by palpitations, dreaminess, forgetfulness, Syndromes such as memory loss, spermatorrhea and irregular menstruation. Insomnia can cause anxiety, depression or fear in patients, and lead to a decrease in the efficiency of mental activities and hinder social function. According to statistics, about 30% of the world's popula...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the traditional extraction method, which generally adopts organic solvent reflux extraction method, microwave method, ultrasonic method, percolation method, soaking method, low temperature and high pressure method, supercritical extraction method, etc., but there are often complicated extraction processes. , large amount of solvent required, high cost, low extraction rate, etc., and the general alcohol extraction process limits the technical defects of its application in food and beverages, and provides a preparation method for Gastrodia elata extract