http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
최장열,이성진 全南大學校 農業科學技術硏究所 2011 農業科學技術硏究 Vol.46 No.-
To compare antioxidant activities between organic and conventional cultivation of rice bran, three kinds of rice species-Hopum, Hopyeong, and Yungwang-were selected and cultivated in Chonnam province. After cultivation, rice bran was extracted with 70% methanol and analyzed protective activity against oxidative stress induced-cell death and antioxidant activities such as inhibition of intracellular reactive oxygen species (ROS) generation and lipid peroxidation in hepatocellular carcinoma HepG2 cells. When HepG2 cells were treated with three kinds of rice bran extracts for 24 h and followed by the treatment of 1 mM H2O2, organic Hopum and Hopyeong rice bran showed the higher protective activities against oxidative stress induced-cell death than their conventional cultivated rice brans. Yungkwang rice bran did not showed the difference between organic cultivation and conventional cultivation. Organic Hopum, Hopyeong, and Yungkwang rice bran extracts reduced the intracellular ROS generation induced by 1 mM H2O2 more efficiently than their conventional-cultivated rice bran extracts. However, tested rice bran extracts did not show the strong protective effects on lipid peroxidation. From the study, organic Hopum and Hopyeong rice bran extracts showed the higher antioxidant activities than their conventional cultivations and these results indicate that even though phytonutrient contents of rice bran were not measured, significant difference between two cultivation practices were evident.