10.1021/acssuschemeng.7b02282.s001
Di Liu
Di
Liu
Ying Li
Ying
Li
Yong Qian
Yong
Qian
Yang Xiao
Yang
Xiao
Shengjun Du
Shengjun
Du
Xueqing Qiu
Xueqing
Qiu
Synergistic Antioxidant Performance of Lignin and
Quercetin Mixtures
American Chemical Society
2017
DPPH
Synergistic Antioxidant Performance
antioxidant performance
Quercetin Mixtures
high-efficiency ratio
lignin
quercetin mixture
4 h
phenolic antioxidant mixture
fluorescence analysis
UV radiation
quercetin molecules
2017-08-02 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Synergistic_Antioxidant_Performance_of_Lignin_and_Quercetin_Mixtures/5303152
A natural, effective, and inexpensive
hindered phenolic antioxidant
mixture was prepared by blending lignin into quercetin. The antioxidant
performance of lignin and quercetin mixture was analyzed by determining
the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging capacity
and a low-cost and high-efficiency ratio was found to be 4:1 (w/w).
After UV radiation for 4 h, the DPPH scavenging ratio of the quercetin/lignin
mixture decreased only 13.8%, while that of quercetin and lignin decreased
42.9% and 28.6%, respectively. The UV and fluorescence analysis indicated
that quercetin molecules inserted into the lignin to weaken its aggregation
and form new conjugated structures. Adding lignin may provide a green
alternative to the expensive quercetin or synthetic antioxidants used
in food, cosmetics, and pharmaceuticals.