Analysis of Ethyl Acetate Extract of Enzymatic Hydrolysate from High Purity Oleuropein and DPPH Radical Scavenging Capacity

5th Annual International Conference on Material Science and Environmental Engineering

材料科学;生态环境科学

Yuan, Jiaojiao^1,2 ; Li, Bing^1 ; Qin, Frank G. F.^2 ; Tu, Junling^2

School of Food Science and Engineering, South China University of Technology, Guangzhou, China^1

School of Chemical Engineering and Energy Technology, Dongguan University of Technology, Dongguan, China^2

关键词: 3 ,4-Dihydroxybenzoic acids;    Anti-oxidant activities;    Dose-effect relationships;    Dpph radical scavenging capacities;    Enzymatic hydrolysates;    Ethyl acetates;    Hemicellulases;    Phenylacetic acid;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/301/1/012021/pdf
DOI  :  10.1088/1757-899X/301/1/012021

来源: IOP

【 摘 要 】

High purify oleuropein (81.04% OL) was hydrolyzed by hemicellulase and phenols was existed in the ethyl acetate extract of enzymatic hydrolysate (EAE). The results presented that there were hydroxytyrosol (HT), tyrosol, caffeic acid, 3,4-dihydroxybenzoic acid, 3,4-dihydroxy phenylacetic acid in EAE by HPLC, and HT content was 19.36%. Antioxidant activities (DPPH radical scavenging capacity) were all added as the samples concentration increased, and dose-effect relationships also existed. HT possessed the highest DPPH radical scavenging capacity, followed by Vc, and eugenol, OL, caffeic acid, 3,4-dihydroxy phenylacetic acid and 3,4-dihydroxybenzoic acid.