Related Experiment Video
Updated: Feb 16, 2026
Preparation of High-Quality Fermented Fish Product
Published on: August 23, 2019
Enzymatic action mechanism of phenolic mobilization in oats (Avena sativa L.) during solid-state fermentation with
Qi Bei1, Gong Chen1, Fangju Lu1
1School of Biology and Biological Engineering, Guangdong Provincial Key Laboratory of Fermentation and Enzyme Engineering, South China University of Technology, Guangzhou 510006, China.
Abstract:
This work aims to investigate the effects of carbohydrate-hydrolysing enzymes on the release of phenolics in oat fermentation with Monascus anka. There were good correlations between phenolic content and α-amylase, xylanase and FPase activities. A high level of α-amylase activity (141.07 U/g) was observed, while xylanase (2.40 U/g), total cellulase (0.52 U/g) and β-glucosidase activities (0.028 U/g) were relatively low in the fermentation system. The phenolic content of oat powder treated with crude enzyme from fermented oats significantly increased, especially that of the ferulic acid in the insoluble fraction and the vanillic acid in the soluble fraction. The surface SEM morphology of the oats showed that the cell wall structure was damaged by the crude enzyme treatment, which led to the release of phenolics. This study could provide metabolic understanding for optimization of phenolic compounds which could more efficiently increase the nutrition of oat intended for functional food ingredients.
Related Concept Videos
01:29Fermentation
Fermentation is a type of metabolic process that occurs in the absence of oxygen, where organic molecules such as glucose are broken down to produce energy. During this process, the...
01:28Depolarizing Blockers: Mechanism of Action
Succinylcholine is the most commonly used depolarizing blocker. Chemically, it constitutes two molecules of acetylcholine joined together by an acetate methyl group. They act on the receptors in the same way as acetylcholine. Because...
01:23Local Anesthetics: Mechanism of Action
Local anesthetics are amphiphilic molecules consisting of a hydrophobic aromatic part linked to a hydrophilic group by an ester or amide linkage. They are weak bases and are usually available as salts, which increases their solubility and stability. Once administered, LAs exist in the body either...
02:37Metallic Solids
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
01:18Indirect-Acting Cholinergic Agonists: Mechanism of Action
Reversible inhibitors like edrophonium bind to a specific part of the enzyme called the anionic catalytic site. They form noncovalent bonds, which means they are not strongly attached to the enzyme. This creates a temporary and less stable enzyme–inhibitor complex,...
01:17Nondepolarizing (Competitive) Neuromuscular Blockers: Mechanism of Action
Competitive antagonists prevent acetylcholine from binding to its receptor, inhibiting membrane depolarization. Without conformational changes or intrinsic...