Ascorbic acid prevents yellowing of fresh-cut yam by regulating pigment biosynthesis and energy metabolism was written by Zhao, Xiaoyan;Guo, Shuang;Ma, Yue;Zhao, Wenting;Wang, Pan;Zhao, Shuang;Wang, Dan. And the article was included in Food Research International in 2022.Category: ethers-buliding-blocks The following contents are mentioned in the article:
The fresh-cut yam would turn yellow under 25°C for 36 h, which could reduce consumer’s acceptance. This study aimed to investigate the mechanism by which 2% ascorbic acid inhibits yellowing of fresh-cut yam by detecting enzyme activities, gene expressions and metabolites. Ascorbic acid treatment was found to decrease ATPase activities, ATP content, and energy charge. The transcriptional expression levels of citrate synthase, acetyl-CoA carboxylase, and acetyl-CoA synthetase, which are involved in the tricarboxylic acid cycle, were also decreased by ascorbic acid treatment, thus blocking the supply of precursors and energy for pigment biosynthesis. In addition, ascorbic acid effectively inhibited the formation of carotenoids, flavonoids, and bisdemethoxycurcumin, as indicated by lower metabolic levels, decreased enzyme activities, and downregulated transcriptional expressions. Thus, ascorbic acid prevents yellowing in fresh-cut yam by reducing the energy metabolism level as well as inhibiting pigment (carotenoids, flavonoids, bisdemethoxycurcumin) biosynthesis pathways. Accordingly, ascorbic acid treatment is a safe, effective, and cheap method for inhibiting fresh-cut yam yellowing. This study involved multiple reactions and reactants, such as Bisdemethoxycurcumin (cas: 33171-05-0Category: ethers-buliding-blocks).
Bisdemethoxycurcumin (cas: 33171-05-0) belongs to ethers. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Category: ethers-buliding-blocks
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem