Method for the chemical synthesis of capsinoids, natural compounds with proven biological activity, from vanillin, comprising the protection of the alcohol group thereof, reduction of the aldehyde to alcohol, esterification of same and deprotection of the first protected alcohol group. In this way, the desired compounds are generated with high purity and said compounds can be easily separated with no mixing owing to the competitive esterification on the aromatic ring.
Enzymatic continuous-flow preparation of nature-inspired phenolic esters as antiradical and antimicrobial agents
作者:Francesca Annunziata、Martina L. Contente、Valentina Anzi、Silvia Donzella、Paola Conti、Francesco Molinari、Piera Anna Martino、Gabriele Meroni、Valerio Massimo Sora、Lucia Tamborini、Andrea Pinto
DOI:10.1016/j.foodchem.2022.133195
日期:2022.10
A collection of nature-inspired lipophilic phenolicesters have been prepared by an enzymatic synthesis under flow conditions, using the immobilized lipase B from Candida antarctica (Novozyme 435®) as a catalyst in cyclopentyl methyl ether (CPME), a non-conventional and green solvent. Their antimicrobial activity against four selected bacterial strains together with their efficiency as radical scavengers
使用来自南极假丝酵母的固定化脂肪酶 B (Novozyme 435®) 作为环戊基甲基醚 (CPME) 中的催化剂,在流动条件下通过酶促合成制备了一系列受自然启发的亲脂性酚酸酯, CPME 是一种非常规和绿色的溶剂。评估了它们对四种选定细菌菌株的抗菌活性以及它们作为自由基清除剂的效率。与母体非酯化化合物相比,所得化合物的特点是亲脂性增强,这增加了它们在食品工业中用作添加剂的可能性。
Solvent-free enzymatic synthesis and evaluation of vanillyl propionate as an effective and biocompatible preservative
作者:Yousun Lee、Sujin Lee、Sungjun Kim、Dogyeong Lee、Keehoon Won
DOI:10.1007/s00449-023-02921-1
日期:2023.11
preservatives from plants, we attempt solvent-free lipase-catalyzed transesterification of vanillyl alcohol with ethyl propionate for the first time. The reaction product, vanillyl propionate was efficiently obtained in a high yield. Unlike vanillyl alcohol and ethyl propionate, vanillyl propionate showed antimicrobial activity. The minimal inhibitory concentration test showed that it exhibited high and broad