Antioxidant activity of mangrove-derived marine thraustochytrids

作者：Kalidasan K; Sunil K S; Narendran R; Kathiresan K^*

来源：Mycosphere, 2015, 6(5): 602-611.

DOI：10.5943/mycosphere/6/5/9

• DPPH
• free radicals
• leaf litter
• nitric oxide
• total phenol

Antioxidants are compounds that inhibit the reaction caused by free radicals thereby preventing or delaying damage to the cells and tissues. Protection against free radicals can be enhanced by taking sufficient amounts of exogenous antioxidants. The present study evaluated the antioxidant activity of the mangrove-derived thraustochytrids for their potential health benefits. Thirteen thraustochytrid strains were isolated from mangrove leaf litter, extracted them separately in methanol and tested for their antioxidant activity by using six different assays: DPPH radical scavenging, total phenol content, hydrogen peroxide radical inhibition, nitric oxide radical assay and total reducing power activity. The antioxidant activity was found significant between the thraustochytrid strains and between concentrations of their extracts (P<0.05). The activity also increased with concentration of the extracts. The strain TSKK1 exhibited highest (78.95+/-1.29) antioxidant activity and TSSK5 the lowest antioxidant activity (72.52+/-2.03). This study proved the potent free radical scavenging and antioxidant activity of thraustochytrids.

• 出版日期2015