Peanut resveratrol extraction method

Abstract

The invention relates to a resveratrol extraction method. The peanut resveratrol extraction method provided by the invention comprises the following steps of: (1) cleaning a digestion tank and a concentration tank; (2) adding peanut shells and a digestion solvent into the digestion tank; (3) after the feeding, performing digestion: sealing the digestion tank, opening a pressure valve, and keeping pressure in the digestion tank at (-0.01)-(-0.1)MPa for 10-150 minutes; (4) extracting the digestion liquid in the digestion tank and concentrating in the concentration tank; (5) after the concentration, taking out the concentrated liquid, and fetching upper-layer partial solution of the concentrated liquid while the concentrated liquid is hot; (6) cleaning the concentration tank, and washing out residual effective components in the concentration tank; (7) drying the fetched upper-layer partial solution in spray drying equipment, and drying the precipitate of the effective components in vacuum drying equipment; and (8) after the water content is reduced below 10%, taking out the product and grinding. The method provided by the invention is easy to realize and suitable for large-scale production.

Description

technical field [0001] The invention relates to a method for extracting resveratrol, in particular to a method for extracting resveratrol from peanuts. Background technique [0002] Peanut, also known as longevity fruit, leguminous, annual herb, is the main vegetable oil and vegetable protein resources. my country is extremely rich in peanut resources, and is the country with the highest peanut production and export volume in the world, accounting for 1 / 3 of the world's total. my country's annual peanut planting area reaches 2.9 million hectares, with a total output of nearly 15 million tons. However, most of my country's peanut by-products are used as fuel, and the rest are discarded as waste residues. Its added value is far from being developed, and even creates a new environment. pollute. Since peanut by-products are rich in active ingredients and have more functional ingredients, comprehensive utilization of peanut by-products is particularly important. Peanut by-produc...

AI Technical Summary

Problems solved by technology

[0005] ① Organic solvent extraction method: mainly used to extract resveratrol, which has a dominant fat-soluble group. In the patent "Production Method for Extracting Resveratrol from Peanut Roots", an extraction method using an organic solvent as an extraction solvent is disclosed. However, this method has long extraction time and high energy consumption, which is not conducive to cost saving.

However, this method is costly and inoperable

[0009] ⑤Supercritical CO 2 Extraction method: using supercritical CO 2 The extraction process of the method, the patent "Supercritical CO 2 Extraction Polygonum cuspidatum resveratrol process" discloses a method using supercritical CO 2 Extraction process, and use absolute ethanol and 2-propanol mixed solvent as modifier, but this method extraction process is complicated

However, the macroporous resin is seriously broken during use, the service life is short, and the sample pretreatment is difficult