Antioxidant Activity of Methanol Extracts from Cudrania tricuspidata Bureau according to Harvesting Parts and Time

DPPH 类黄酮 树皮(声音) 化学 抗氧化剂 干重 植物 园艺 食品科学 清除 传统医学 生物 有机化学 生态学 医学
作者
So-Ra Choi,Donghyun You,Jong-Yeob Kim,Chun-Bong Park,Dae-Hyang Kim,Jeong Ho Ryu
出处
期刊:The Korean Journal of Medicinal Crop Science [Korean Society of Medicinal Crop Science]
卷期号:17 (2): 115-120 被引量:11
摘要

To obtain the information on antioxidant activity by harvesting parts and time in Cudrania tricuspidata Bureau, total phenolic contents, flavonoid contents, superoxide dismutase (SOD) like activity and 2,2-diphenyl-1-picrylhydrazyl(DPPH) radical scavenging activity of methanol extracts from Cudrania tricuspidata were investigated. Total phenolic contents was the highest in leaf [ dry weight (DW)] and followed by root bark, stem bark, fruit, root except bark and stem except bark. Among harvesting time, total phenolic contents of leaf was the highest as DW in May and June, and then decreased to October. Root bark harvested in April and May contained DW total phenolic compounds and total phenolic content fell to a very low values at 1.8 mg/g DW in February. Flavonoid contents was very high in leaf and root bark. Especially, root bark harvested in April had the highest of flavonoid contents as 23.2 mg/g DW. As a result of simple linear regression analysis of total phenolic contents on flavonoid contents according to harvesting parts, it showed a high correlation (p (coefficient of determination). As value, that was, the concentration of sample required for 50% reduction of DPPH absorbance, was in leaf so DPPH radical scavenging activity was very high. But SOD like activity of extract/mL MeOH was a low value of in all samples.
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