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Preparation method for resveratrol

A technology of resveratrol and mulberry, applied in the preparation of organic compounds, chemical instruments and methods, organic chemistry, etc., can solve the problems of poor purity of resveratrol, achieve short extraction time, high extraction efficiency, and reduce dosage Effect

Inactive Publication Date: 2015-12-16
CHONGQING DOUHAO BIOTECH
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Problems solved by technology

Due to the limitations of the process, the purity of resveratrol produced in my country is poor

Method used

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Embodiment

[0016] A kind of preparation method of resveratrol of the present invention comprises the following steps:

[0017] 1) Mulberry drying: The picked mulberries are naturally air-dried to remove the remaining moisture until the moisture content is about 3%.

[0018] 2) Pulverization: pulverize the air-dried mulberries to 80 meshes and set aside.

[0019] 3) Ultrasonic extraction of resveratrol: Weigh 2 g of crushed 80-mesh mulberry, add 14 ml of ethyl acetate with a volume fraction ≥ 99.5%, and place it in an ultrasonic extractor for extraction. The extraction temperature is 40°C, and the extraction time is 15 minutes. After the end, filter the extract to get the filtrate and filter residue, concentrate the filtrate and recover the solvent, use the recovered solvent to extract the filter residue again, the extraction temperature and time are the same as the first extraction, after the extraction, filter the extract The filtrate and filter residue are obtained, the filtrate is co...

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Abstract

The invention relates to a technology for extracting effective ingredients from natural products and extracting resveratrol from mulberries. The technology comprises the steps that the mulberries are dried and smashed, and resveratrol is extracted through ultrasonic waves and purified to obtain the resveratrol. According to the technical scheme of the method, dual solvent and ultrasonic extraction and integration are adopted, the characteristic that the solubleness of the resveratrol in the mulberries is higher in weak polar solvent is utilized, and an ultrasonic extraction technology is utilized, so that the technology has the advantages of being high in extraction efficiency and product purity and low in extraction cost and energy consumption; the solvent used in the extraction process can be recycled and little in usage amount, so that the influence to the environment is lower, and the biological activity of the resveratrol is prevented from being destroyed in the extraction process.

Description

technical field [0001] The invention relates to a process for extracting active ingredients from natural products, in particular to a method for preparing resveratrol. Background technique [0002] Our country has a long history of planting mulberry and sericulture. The variety of mulberry trees and the output of mulberry both rank first in the world, and the resources are quite rich. Mulberry is rich in nutrients and contains various nutrients necessary for the human body. Its various nutrients are higher than those of common fruits, and it also has the effect of medical care. Chinese herbal medicine of past dynasties recognized that mulberry has the effects of nourishing liver and kidney, nourishing yin and nourishing blood, darkening eyes, removing freckles and prolonging life; it has been considered as a kind of natural food with nutritional and health functions. Using mulberries as raw materials to develop green food and traditional Chinese medicine grassland preparati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C37/68C07C37/82C07C39/21
CPCC07C37/004C07C39/21
Inventor 宁发子邓小玲宁成勇
Owner CHONGQING DOUHAO BIOTECH
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