Molecules (2017)
Update date:2022-08-30
Topics:
Niciforovi?, Neda
Polak, Toma?
Makuc, Damjan
Ulrih, Nata?a Poklar
Abramovic, Helena
McPhee, Derek J.
A kinetic approach was used to determine the radical scavenging activities of sinapic acid and its derivatives: sinapine, 4-vinylsyringol, syringic acid, syringaldehyde, and ethyl, propyl and butyl sinapate. The responses were expressed as rates of 2,2-diphenyl-1-picrylhydrazyl radical (DPPH) scavenging (RS), superoxide radical (O2-) scavenging (RFF), and β-carotene bleaching in the emulsion system (RB). For RS and RB, the esters of sinapic acid showed the highest responses while, for RFF, this was seen for syringic acid. The effectiveness of the selected compounds for scavenging these free radicals was also determined at a fixed endpoint. The early response parameters were demonstrated to be good discriminators in assessing differences for antioxidants with comparable fixed endpoint activity. The primary feature that ranks the kinetic data and the endpoint determinations is interpreted in terms of the mechanisms of the reactions involved in each of the assays conducted.
View MoreShangHai Original Economy-Trade Develop Co.,Ltd.,
Contact:86-21-68552131
Address:shanghai
website:http://www.eastarchem.com/
Contact:1-800-898-2436
Address:1215 K Street, STE 1700
website:http://www.hanwayschem.com
Contact:+86-18502787239(whatsapp)
Address:18-1-802, Green Garden, Jianghan District, Wuhan 430023, China
Yingkou Sanzheng New Technology Chemical Industry Co., Ltd.
Contact:+86-417-2927806
Address:yingkou
Tianjin Ji Ping Jia Chemical Co., Ltd.
Contact:18622448868
Address:tianjin
Doi:10.1248/cpb.50.83
(2002)Doi:10.1021/ja036132k
(2004)Doi:10.1021/ja00846a025
(1975)Doi:10.1016/0040-4039(93)85099-I
(1993)Doi:10.1016/0960-894X(96)00073-X
(1996)Doi:10.1039/c6dt04094b
(2017)