Preparation process of almond blood pressure reducing functional oligopeptides

Abstract

The invention discloses a preparation process of almond blood pressure reducing functional oligopeptides. The process comprises the following steps of (1) performing pretreatment: drying and smashing almond meal, performing milling a colloid mill, then, performing freezing and microwave thawing, and next performing leaching centrifugation to obtain protein precipitation; (2) performing complex enzyme ultrasound enzymolysis: performing ultrasonic treatment at 50KHZ and 200W by complex enzyme, and performing an enzymatic hydrolysis reaction for 1 to 2 hours; (3) performing high-temperature enzyme deactivation; (4) performing centrifugal separation to obtain almond peptide raw liquid; (5) adding active carbon powder accounting for 1 to 3 percent of the weight of the almond peptide raw liquid, and performing decoloration and debittering treatment to obtain almond peptide fine filter liquid; and (6) performing vacuum concentration and spraying drying on the almond peptide fine filter liquid to obtain finished product almond oligopeptides. The preparation process of the almond blood pressure reducing functional oligopeptides has the advantages that the almond meal is used as the raw material; the freezing and microwave thawing pretreatment is used for being combined with biological composite enzymatic hydrolysis and ultrasonic treatment technologies; the almond oligopeptides with high yield and high hydrolysis degree are prepared; the impurities are few; no bad odor exists; the product purity is high; and the efficacy is good.

Description

technical field [0001] The invention relates to the technical field of short peptide extraction, in particular to a preparation process of almond antihypertensive functional short peptide. Background technique [0002] Almonds are the seeds of apricots, accounting for about 3% of the fresh weight of apricots, and have high economic value. At present, the production of almonds in the world is very high. my country is one of the main producing countries of almonds. The domestic processing method is mainly based on oil extraction, and a small amount of dried almonds, canned almonds, almond milk, etc. are processed. The protein content of almonds is 24-27%, and the oil content of almonds is as high as about 50%. The almond oil production plant still contains a lot of high-quality protein in the cake after oil extraction, but for a long time they are mostly used as feed, fertilizer or as residue waste, resulting in a great waste of nutritional resources. The good functional pro...

AI Technical Summary

Problems solved by technology

The protein content of almonds is 24-27%, and the oil content of almonds is as high as about 50%. The almond oil production plant still contains a lot of high-quality protein in the cake after oil extraction, but for a long time they are mostly used as feed, fertilizer or as residue waste, resulting in a great waste of nutritional resources