TITLE:
Antioxidant Activity in Vitro of Polysaccharide Extracted by Ultrasound with Different Powers from Ophiopogon japonicas
AUTHORS:
Xiaomei Wang, Tianzhu Zhang, Wenfei Zhang, Mingming Zhang, Songqi Zhu, Haibo Liu
KEYWORDS:
Ultrasound, Ophiopogon japonicas, Antioxidant Activity
JOURNAL NAME:
American Journal of Plant Sciences,
Vol.9 No.9,
August
14,
2018
ABSTRACT:
The polysaccharides were extracted by different
power ultrasound from Ophiopogon
japonicas. The extraction yield and in
vitro antioxidant activities including scavenging effect
on hydroxyl radical, superoxide anion free radicals and DPPH were investigated.
The results showed that with the increase of ultrasonic power, the yield of the
polysaccharides decreased first and then increased. The antioxidant activity of
polysaccharides increased first and then decreased with the increase of
ultrasonic power. When the power was 400 W, the scavenging effect on superoxide anion and
DPPH of the polysaccharides was the strongest, and the scavenging ability of
hydroxyl radical was the strongest when the power was 560 W. Therefore, different ultrasonic power could
affect the extraction yield and antioxidant activity of Ophiopogon
japonicas polysaccharide. It will provide theoretical basis
and experimental support for the application of ultrasonic extraction on
polysaccharides from Ophiopogon
japonicas.