Accurate control method for preparation process of oat fermentation extract

Abstract

The invention provides an accurate control method for an oat fermentation extract preparation process, and the method comprises the following steps: sequentially carrying out anaerobic fermentation and aerobic fermentation on oat, controlling dissolved oxygen in the aerobic fermentation process to be not less than 45%, and controlling the aerobic fermentation process by controlling the oxygen consumption rate, specifically including the following steps: controlling the oxygen consumption rate at 30 + / -2.1 mmol / L / h in the first stage of aerobic fermentation, controlling the oxygen consumption rate at 45 + / -2.2 mmol / L / h in the second stage of aerobic fermentation, and controlling the oxygen consumption rate at 55 + / -2.5 mmol / L / h in the third stage of aerobic fermentation. According to the precise control method for the preparation process of the oat fermentation extract, provided by the invention, in an aerobic process of sequentially fermenting by utilizing bifidobacterium and saccharomycetes, the process is controlled through an optimized oxygen consumption rate level and an optimized dissolved oxygen level; the oat extract with the content of various active ingredients such as glutathione, amino acid and flavone remarkably increased is prepared, and the production process of the oat fermentation extract with the process capable of being accurately and effectively controlled is formed.

Description

technical field [0001] The present application relates to the technical field of biological fermentation, in particular to a method for precisely controlling the preparation process of oat fermented extract, and the oat fermented extract prepared by the method. Background technique [0002] Oat is a grass herb and one of the important crops in my country. Studies have shown that oat has good biological activity and medicinal value, and can be used in food, feed, medicine, cosmetics and industrial raw materials. [0003] As a functional ingredient, oat has a variety of functional ingredients, such as protein, unsaturated lipids, vitamins, polyphenols, alkaloids, saponins, etc., and also contains a large number of antioxidants, mainly glutathione, Polyphenols, phytic acid sterols and vitamins, etc. In addition, oatmeal also contains a large amount of β-glucan. β-glucan has the functions of anti-aging and anti-wrinkle, promoting stratum corneum regeneration, wound healing, sc...

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned active substances contained in oats widely exist in seed granules, and are fused together with starch and macromolecular protein, etc., and the effect of simple water extraction is very poor, especially the presence of macromolecular starch and protein, which reduces the The stability of oat extract as a cosmetic raw material and its potential allergenicity

[0005] In the prior art, in order to better extract the active substances in oats, enzymatic hydrolysis treatment methods are usually used, such as adding amylase, protease, etc., but the dextrin and starch sugar substances decomposed in the extract obtained after enzymatic hydrolysis Difficult to isolate, affecting application performance

The applicant's previous application provided a method for extracting oat extract by fermentation with bacteria, but the content of various active ingredients in the oat extract obtained by this method still needs to be improved

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