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http://dx.doi.org/10.3746/jkfn.2010.39.8.1102

Effect of the Ethanol Extract from Citrus Peels on Oxidative Damage in Alloxan-induced HIT-T15 Cell  

Jung, Hee-Kyoung (Bio Industry Center, Daegu Technopark)
Jeong, Yoo-Seok (Bio Industry Center, Daegu Technopark)
Park, Chi-Deok (Bio Industry Center, Daegu Technopark)
Park, Chang-Ho (Bio Industry Center, Daegu Technopark)
Hong, Joo-Heon (Dept. of Food Science and Technology, Catholic University of Daegu)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.39, no.8, 2010 , pp. 1102-1106 More about this Journal
Abstract
This study was carried out to investigate the effect of ethanol extract from citrus peels (CP-Et) against the alloxan-induced oxidative damage on HIT-T15, Hamster pancreatic $\beta$-cell. Total polyphenol and flavonoid contents in CP-Et were $57.00{\pm}2.91\;mg/g$ and $8.11{\pm}2.83\;mg/g$, respectively. Cell toxicity on HIT-T15 by CP-Et (0.125~0.75 mg/mL) was not observed. CP-Et (0.125 mg/mL) increased cell proliferation rate of HIT-T15, which was treated alloxan ($IC_{50}=11.58\;mM$) (cell viability=$80.52{\pm}3.29%$ of normal cell, p<0.05). In comparison with insulin secretion of oxidative damaged HIT-T15, 1.5 fold ($116.93{\pm}2.11\;{\mu}g/mg$ protein) was increased by treatment CP-Et treatment (0.125 mg/mL) in HIT-T15 (p<0.05). These results showed that CP-Et contribute to repairing cells and improvement of insulin expression on oxidative stress pancreatic $\beta$-cell, and also suggested application of CP-Et as a functional food material for type 2 diabetes.
Keywords
citrus peels; oxidative damage; insulin secretion; alloxan; HIT-T15 cell;
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