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http://dx.doi.org/10.11002/kjfp.2011.18.3.366

Antioxidants and Anti-obesity Activities of Hot Water and Ethanolic Extracts from Cheonnyuncho (Opuntia humifusa)  

Kim, Dae-Jung (Department of Food Science and Technology, Chungbuk National University)
Jung, Ji-Hoon (Department of Food Science and Biotechnology, Kangwon National University)
Kim, Sun-Gu (Department of Food Science, Kongju National University)
Lee, Hya-Ku (Department of Food Science, Kongju National University)
Lee, Seong-Kap (Department of Food and Biotechnology, Hoseo University)
Hong, Hee-Do (Korea Food Research Institute)
Lee, Boo-Yong (Department of Food Science and Biotechnology, CHA University)
Lee, Ok-Hwan (Department of Food Science and Biotechnology, Kangwon National University)
Publication Information
Food Science and Preservation / v.18, no.3, 2011 , pp. 366-373 More about this Journal
Abstract
Recent studies suggested that Cheonnyuncho is a significant source of bioactive phenolic compounds, comparable to phytochemicals, including green tea and onion. In this study, the hot-water and 80% ethanolic extracts of Cheonnyuncho were assessed as to their total phenol content, total flavonoids content, antioxidant activity (DPPH radical-scavenging activity and reducing power), and anti-obesity activity. The results showed that the total phenol contents of the hot water extract and the 80% ethanolic extract were $16.52{\pm}3.87$ and $13.44{\pm}0.85$ mg GAE/g, respectively. The total flavonoids content was detected only in the 80% ethanolic extract, however, with a 778.08 ${\mu}g$ catechin equivalents/g content. The DPPH radical-scavenging activity and reducing power of the 80% ethanolic extract from Cheonnyuncho was significantly higher than those of the water extract (p < 0.05). During the adipocyte differentiation, the 80% ethanolic extract of Cheonnyuncho more significantly inhibited lipid accumulation and ROS production than the 3T3-L1 cells that were treated with hot water extract. Furthermore, the 80% ethanolic extract of Cheonnyuncho suppressed the mRNA abundance of the adipogenic transcription factor, $PPAR{\gamma}$ (peroxisome proliferator-activated receptor ${\gamma}$), and its target gene, aP2 (adipocyte protein 2). These results indicate that Cheonnyuncho extracts can inhibit adipogenesis through a mechanism that involves direct down regulation of $PPAR{\gamma}$ gene expression or via modulation of ROS production associated with radical-scavenging activities.
Keywords
Cheonnyuncho; total phenol content; total flavonoids content; antioxidant activity; anti-obesity activity;
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Times Cited By KSCI : 9  (Citation Analysis)
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