Antioxidant Properties of Water Extracts from Lentinula edodes Cultivars Grown on Oak Log

Sooyoung Seo1   Yeongseon Jang1,*   Rhim Ryoo1   Kang-Hyeon Ka1   

1Division of Wood Chemistry and Microbiology, National Institute of Forest Science

Abstract

We investigated the antioxidant activities of nine Lentinula edodes varieties cultivated on oak log. The total polyphenol content (TPC), total flavonoid content (TFC), and antioxidant properties of L. edodes (varieties: Dasanhyang, Chunbaegko, Poongnyunko, Soohyangko, Baekwhahyang, Chunjang 1ho, Chunjang 2ho, Sanlim 5ho, and Sanlim 7ho) were evaluated using the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical-scavenging assay and the ferric reducing antioxidant power (FRAP) assay. The TPC and TFC of mushroom extracts ranged from 5.10 to 10.88 mg gallic acid equivalent (GAE)/g and 0.76 to 5.78 mg quercetin equivalent (QE)/g, respectively. In addition, mushroom extracts exhibited DPPH radical scavenging activity of 24.22~90.41%, 2.0 mg/mL and FRAP of 0.056~0.231, 2.0 mg/mL. The Chunbaegko variety showed the highest TPC (10.88 mg GAE/g), TFC (5.78 mg QE/g), DPPH activity (38.19~90.11%, 0.2~2.0 mg/mL), and FRAP (0.075~0.231, 0.2~2.0 mg/mL).

Acknowledgements

This work was supported by Korea Institute of Planning and Evaluation for Technology in Food, Agriculture, Forestry and Fisheries (IPET) through Golden Seed Project, funded by Ministry of Agriculture, Food and Rural Affairs (MAFRA) (213007-05-2-SBH10) and Application study on bottle cultivation method of Letinula edodes for automated mushroom cultivation (FP 0801-2016-1).

Figures & Tables

Fig. 1. 2,2-Diphenyl-1-picrylhydrazyl (DPPH) radical-scavenging activity of water extracts from Lentinula edodes. Values are presented as means ± SD (n = 3). Different superscripts indicate significant difference among groups at p < 0.05.