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http://dx.doi.org/10.9721/KJFST.2013.45.5.657

Effect of Roasting Conditions on the Antioxidant Activities of Cassia tora L.  

Lee, Myung-Hye (Korea Food Research Institute)
Cho, Jin-Ho (Korea Food Research Institute)
Kim, Bum-Keun (Korea Food Research Institute)
Publication Information
Korean Journal of Food Science and Technology / v.45, no.5, 2013 , pp. 657-660 More about this Journal
Abstract
The effects of roasting temperature and time on the antioxidant activities of Cassia tora L. were investigated. In comparison with raw seeds (7.15 mg TAE/g), roasted seeds contained a significantly higher total polyphenol content (p<0.05). However, seeds roasted at a higher temperature ($250^{\circ}C$) for 10 min showed a significantly lower total polyphenol content (2.30 mg TAE/g; p<0.05). The electron donating abilities of Cassia tora L. seeds increased with an increase in roasting time; further, seeds roasted for 5 min at lower temperatures showed higher electron donating abilities (80.61% at $175^{\circ}C$; 80.75% at $200^{\circ}C$) than did seeds roasted for 5 min at higher temperatures (76.26% at $225^{\circ}C$; 77.35% at $250^{\circ}C$). Seeds roasted at lower temperatures showed adequate L values, regardless of roasting time; by contrast, seeds roasted for 10 min at higher temperatures, showed markedly lower L values. Our results indicate that roasting temperature and time must be controlled to produce high-quality Cassia tora L. products.
Keywords
Cassia tora L.; roasting condition; total polyphenol; electron donating ability; L value;
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Times Cited By KSCI : 6  (Citation Analysis)
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