Extraction method of peanut red skin pigment

Abstract

The invention relates to an extraction method of peanut red skin pigment. The method includes the steps of: (1) crushing: crushing peanut red skin to obtain peanut red skin powder; (2) enzymolysis: firstly preparing the peanut red skin powder into a 5-15% by weight of a suspension, adding cellulase, conducting enzymolysis for 30-45min, and performing filtration to obtain peanut red skin enzymolysis filtrate; (3) drying: drying the peanut red skin enzymolysis filtrate into powder to obtain peanut red skin enzymolysis powder; (4) ultrasonic extraction: dissolving the peanut red skin enzymolysis powder in ethyl acetate, conducting ultrasonic extraction 1-3 times, conducting filtration and combining the filtrate to obtain an ethyl acetate extracted solution; (5) extraction: filtering the ethyl acetate extracted solution, then extracting the ethyl acetate extracted solution with water, and concentrating the water solution obtained by extraction to obtain a peanut skin red pigment peanut red skin pigment; and (6) conducting freeze drying to obtain the product. The final product obtained by the method provided by the invention not only has high purity, but also ensures the extraction rate.

Description

technical field [0001] The invention relates to the field of biological extraction, in particular to a method for extracting peanut red pigment. Background technique [0002] Peanut red coat is also called peanut skin, which is the seed coat of legume peanut, reddish brown, membranous, sweet, slightly bitter, and flat in nature. Its main components are 37%-42% cellulose, 10%-14% fat, 11%-18% protein and 8%-21% ash, and also contain about 7% tannin and various pigments. [0003] Peanut red coat has the effect of stopping bleeding, dissipating silt, and reducing swelling. It is the main drug for treating anemia and hemorrhagic disease. Peanut itself is 50 times stronger, which is recorded in books such as "Compendium of Materia Medica" and "Chinese Pharmacopoeia". With the improvement of material living standards, people's diet concepts have also changed. Hope to achieve the effect of disease prevention while enjoying the delicious food, which requires that in addition to n...

AI Technical Summary

Problems solved by technology

[0004] Edible natural coloring has the advantages of safety and reliability, less toxic and side effects, natural color, etc., and also has certain pharmacological health effects. The application of natural food coloring continues to expand, which is far from meeting the needs of the development of the modern food industry.