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http://dx.doi.org/10.13103/JFHS.2017.32.6.460

Comparison of Anti-oxidative Activity in a Single Serving Size of the Commercial Coffees and Teas  

Kim, Tae-Hun (Food Analysis Division, Daejeon Metropolitan City Institute of Health and Environment)
Lee, Seulgi (Department of Biochemistry, Chungnam National University)
Seo, Jin Woo (Food Analysis Division, Daejeon Metropolitan City Institute of Health and Environment)
Bing, Sun Hye (Food Analysis Division, Daejeon Metropolitan City Institute of Health and Environment)
Kim, Jong Im (Food Analysis Division, Daejeon Metropolitan City Institute of Health and Environment)
Kwon, Eui-Ra (Food Analysis Division, Daejeon Metropolitan City Institute of Health and Environment)
Jo, Gune-Hee (Food Analysis Division, Daejeon Metropolitan City Institute of Health and Environment)
Lee, Jae-Myean (Food Analysis Division, Daejeon Metropolitan City Institute of Health and Environment)
Choi, Joon Sig (Department of Biochemistry, Chungnam National University)
Publication Information
Journal of Food Hygiene and Safety / v.32, no.6, 2017 , pp. 460-469 More about this Journal
Abstract
The aim of this work was to study the comparison of anti-oxidative activity in a single serving size of commercial coffees and teas. Commercial regular coffees and teas, including, brand regular coffees ($BC_A$, $BC_B$, $BC_C$, $BC_D$, and $BC_E$), green tea ($GT_A$, $GT_B$, $GT_C$, and $GT_D$), black tea ($BT_A$, $BT_B$, and $BT_C$), pu-erh tea ($PT_A$, $PT_B$, and $PT_C$), chamomile tea ($CT_A$, $CT_B$, and $CT_C$), peppermint tea ($P_A$, $P_B$, and $P_C$), polygonatum odoratum tea ($POT_A$, $POT_B$, and $POT_C$), and jujube tea ($JT_A$, $JT_B$, and $JT_C$) were assayed for the levels of ascorbic acid, caffeine, total content of polyphenols and flavonoids, and ability to scavenge free radicals, using two in vitro antioxidant assays. The scavenging abilities of $BC_A$ and $BC_C$ were $664.91{\pm}48.87mg$ ascorbic acid equivalent/serving size and $624.36{\pm}16.18mg$ ascorbic acid equivalent/serving size, respectively. The four beverage samples ($BC_A$, $BC_C$, $GT_D$, and $BT_A$) significantly reduced the production of reactive oxygen species (ROS) and intracellular oxidative stress induced by $H_2O_2$. These results suggest that the beverages possess significant radical scavenging ability, which may be due to the presence of antioxidants. Furthermore, the significant reducing level of ROS evidences the potential antioxidant effects of these beverages in human cells.
Keywords
Antioxidants; Coffee; Polyphenols; Reactive oxygen species; Tea;
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