Preparation method for longan shell extracting solution

Abstract

The invention discloses a preparation method for longan shell extracting solution. The preparation method comprises the following steps: weighing, cleaning and drying fresh longan shells until the water content is 3 to 5 percent, and then crushing to obtain longan shell powder with the particle size of less than 100 mu m; mixing 1 weight part of the longan shell powder and 3 to 5 weight parts of ethyl alcohol aqueous solution, placing a mixture into a pressure kettle, and performing ultrasonic extraction in a boiling water bath, wherein the volume fraction of the ethyl alcohol in the ethyl alcohol aqueous solution is 20 to 25 percent, and the pressure in the kettle is 200 to 250 kpa, the ultrasonic frequency is 35 to 40 kHz, and the extracting time is 30 to 45 minutes; after the extracting is ended, filtering, removing residues, taking a filtrate, removing the ethyl alcohol from the filtrate through a separating process, and performing fine-filtering to obtain the longan shell extracting solution. The method disclosed by the invention is easy to operate and short in extracting time; the pollution caused by the addition of toxic or harmful substances in an extracting process is avoided; the active ingredients in the obtained longan shell extracting solution are high in extracting efficiency, high in bioactivity and stable in characteristics.

Description

technical field [0001] The invention relates to a preparation method of plant extract, in particular to a preparation method of longan shell extract. Background technique [0002] Longan can also be called longan, which is a kind of delicious fruit in our life. At the same time, it is also a kind of best health food, which has good health care effects and functions. It is rich in glucose, sucrose and protein etc., the iron content is also relatively high, which can increase heat energy and supplement nutrition while promoting the regeneration of hemoglobin, so as to achieve the effects of nourishing qi and blood, calming the nerves, and delaying aging. Cells are particularly effective in enhancing memory and eliminating fatigue. Longan shells, which people pay less attention to, also have the functions of expelling wind, detoxifying, suppressing sores, and promoting muscle growth. At present, there are few deep processing and utilization methods for longan shells. Content...

AI Technical Summary

Problems solved by technology

Longan shells, which people pay less attention to, also have the functions of expelling wind, detoxification, astringing sores, and promoting muscle growth. At present, there are few methods of deep processing and utilization of longan shells.