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JKFN Journal of the Korean Society of Food Science and Nutrition



Online ISSN 2288-5978

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Journal of the Korean Society of Food Science and Nutrition 2017; 46(12): 1556-1560

Published online December 31, 2017

Copyright © The Korean Society of Food Science and Nutrition.

Evaluation of Antioxidant and Tyrosinase Inhibitory Activities of Barley by Cultivars and Milling Recovery

Seuk Ki Lee, Koan Sik Woo, Haelim Lee, Jihae Lee, Byong Won Lee, Yu-Young Lee, Byoungkyu Lee, Sun Lim Kim, and Hyun-Joo Kim

Crop Post-harvest Technology Division, Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration

Abstract

The purpose of this study was to evaluate the effects of barley cultivars [Saechalssalbori (SC), Huinchalssalbori (H), and Saessalbori (S)] and different milling recovery rates (95%, 85%, and 75%) on antioxidant and tyrosinase inhibitory activities. Results show that the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activities of SC, H, and S extracts based on 95% coverage were 5.90, 4.63, and 17.57 mg Trolox equivalent/g sample, respectively. The ferric-reducing antioxidant potential (FRAP) value ​​of S extract with 95% milling recovery was the highest at 1,041.53 μM. Tyrosinase inhibitory activities of SC, H, and S extracts were 30.64, 38.62, and 60.64%, respectively. Total polyphenol contents of SC, H, and S extracts based on 95% coverage were 48.87, 44.58, and 172.51 μg gallic acid equivalent/g sample, respectively. The total flavonoid content ​​was highest in S extract with 95% milling recovery. The DPPH radical scavenging activity, FRAP value, tyrosinase inhibitory effect, total polyphenol, and flavonoid contents of barley extracts were reduced as milling recovery rate decreased. The results of this study suggest that milling recovery and cultivar of barley are important factors to improve the antioxidant and tyrosinase inhibitory activities of barley.

Keywords: barley, cultivar, milling recovery, antioxidant, tyrosinase inhibition

Article

Note

Journal of the Korean Society of Food Science and Nutrition 2017; 46(12): 1556-1560

Published online December 31, 2017

Copyright © The Korean Society of Food Science and Nutrition.

쌀보리 품종 및 도정률에 따른 항산화 및 Tyrosinase 저해 활성 평가

Evaluation of Antioxidant and Tyrosinase Inhibitory Activities of Barley by Cultivars and Milling Recovery

Seuk Ki Lee, Koan Sik Woo, Haelim Lee, Jihae Lee, Byong Won Lee, Yu-Young Lee, Byoungkyu Lee, Sun Lim Kim, and Hyun-Joo Kim

Crop Post-harvest Technology Division, Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration

Abstract

The purpose of this study was to evaluate the effects of barley cultivars [Saechalssalbori (SC), Huinchalssalbori (H), and Saessalbori (S)] and different milling recovery rates (95%, 85%, and 75%) on antioxidant and tyrosinase inhibitory activities. Results show that the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activities of SC, H, and S extracts based on 95% coverage were 5.90, 4.63, and 17.57 mg Trolox equivalent/g sample, respectively. The ferric-reducing antioxidant potential (FRAP) value ​​of S extract with 95% milling recovery was the highest at 1,041.53 μM. Tyrosinase inhibitory activities of SC, H, and S extracts were 30.64, 38.62, and 60.64%, respectively. Total polyphenol contents of SC, H, and S extracts based on 95% coverage were 48.87, 44.58, and 172.51 μg gallic acid equivalent/g sample, respectively. The total flavonoid content ​​was highest in S extract with 95% milling recovery. The DPPH radical scavenging activity, FRAP value, tyrosinase inhibitory effect, total polyphenol, and flavonoid contents of barley extracts were reduced as milling recovery rate decreased. The results of this study suggest that milling recovery and cultivar of barley are important factors to improve the antioxidant and tyrosinase inhibitory activities of barley.

Keywords: barley, cultivar, milling recovery, antioxidant, tyrosinase inhibition