Functional Biological Activity of Hot Water and Ethanol Extracts from Taraxaci Herba

Abstract

This study was conducted to investigate the functional biological effects of hot water and ethanol extracts from Taraxacum mongolicum (TM). Then, the hot water and ethanol extracts of TM were measured for total flavonoids content, total phenolics content, electron donating ability, nitrite-scavenging ability, SOD-like activity, tyrosinase inhibitory effect, and elastase inhibitory effect. Total flavonoids contents of hot water and ethanol extracts from TM were 7.80±0.97 mg/g and 9.12±0.51 mg/g, respectively, and total phenolics contents were estimated as 54.20±1.95 mg/g for water extract and 79.43±4.44 mg/g for ethanol extract. The RC50 values for electron donating ability of hot water and ethanol extracts were 943.98 μg/mL and 309.41 μg/mL. SOD-like activity and nitrite-scavenging ability were dependent on concentration of hot water and ethanol extracts, and the activity of ethanol extract was higher than that of hot water extract. However, hot water and ethanol extracts from TM showed no inhibitory activities on the elastase and tyrosinase inhibitory activities. Based on the above results, the ethanol extract of TM seems to be the most pertinent for use as functional food and cosmetic.

Effect of Nitrogen Fertilizer on the Growth and Antioxidant Activities of Prunella vulgaris and Campanula takesimana

“…이와 같이 자생식물의 이용성과 수요는 다양한 분야에서 증가하 는 추세를 보이는 반면 재배 및 고기능성 관련 연구는 미흡한 실정 이다. 특히 최근 국민소득의 증대, 생활패턴의 서구화 그리고 식생 활 변화로 각종 암, 성인병과 만성퇴행성 질병 발병률 증가 및 기능 성 건강식품에 대한 수요증가에 따라 (Kim et al, 2008;Lim et al, 1996;Lim et al, 2008;Moon et al, 2003;Oh and Kim, 2006) 집약적 재배로의 전환이 진행되고 있다. 그러나 자생식물에 대한 시비 관련 연구 (Jeong et al, 2012;Lee et al, 2007;Lee et al, 2008)와 생산성 연구 (Nam et al, 2009) 등을 보면 질산태 질소와 암모니아태 질소에 대한 선호도 특성이나 내적 품질 변화에 대한 연구, 특히 항산화 활성 및 기능성 물질에 대한 연구는 많지 않다 (Abbes et al, 1995;Bar-Tal et al, 2001).…”