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http://dx.doi.org/10.3746/jkfn.2010.39.8.1187

Changes in Antioxidant and Nitrite Scavenging Activities of Angelica keiskei and Brassica loeracea var. acephala Vegetable Juices Treated with UV Irradiation during Storage  

Choi, Goo-Hee (Dept. of Food Science and Technology, Chungju National University)
Kwon, Sang-Chul (Chamsunjin Food Co., Ltd.)
Lee, Kyung-Haeng (Dept. of Food Science and Technology, Chungju National University)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.39, no.8, 2010 , pp. 1187-1193 More about this Journal
Abstract
To elongate the shelf-life of Angelica keiskei and Brassica loeracea var. acephala vegetable juices, UV irradiation was used and the changes of antioxidant activity and nitrite scavenging ability were investigated. The content of polyphenols of vegetable juices were slightly reduced by UV treatment and/or storage period. The DPPH radical-scavenging activities of the vegetable juices treated by UV were higher than that of control but were not changed during storage. However, $ABTS{\cdot}^+$ reducing activities of the vegetable juices were reduced by UV treatment. The $ABTS{\cdot}^+$ reducing activity of Brassica loeracea var. acephala juice was lower when the flow rate was slower. The ferrous ion chelating effects of Angelica keiskei vegetable juices were reduced by UV treatment. In contrast, the ferrous ion chelating effects of Brassica loeracea var. acephala vegetable juices were not different from those of right after manufacturing. The ferrous ion chelating effects on both vegetable juices increased during storage periods. The inhibitory activity of lipid oxidation was decreased slightly by UV treatment on vegetable juices. The nitrite scavenging ability of Angelica keiskei and Brassica loeracea var. acephala vegetable juices treated by UV irradiation was not different from that of control. The nitrate scavenging abilities of vegetable juices in pH 1.2 were higher than those in pH 3.0 and 4.2.
Keywords
UV irradiation; vegetable juice; antioxidant activity; nitrite scavenging ability;
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Times Cited By KSCI : 9  (Citation Analysis)
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