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http://dx.doi.org/10.9724/kfcs.2013.29.1.53

Effects of Chlorophyll Addition and Light on the Oxidative Stability and Antioxidant Changes of Perilla Oil Emulsion  

Choe, Jeesu (Department of Food and Nutrition, Inha University)
Choe, Eunok (Department of Food and Nutrition, Inha University)
Publication Information
Korean journal of food and cookery science / v.29, no.1, 2013 , pp. 53-62 More about this Journal
Abstract
Lipid oxidation and antioxidants changes in perilla oil emulsion added with chlorophyll were studied during storage in the dark or under 1,700 lux light at $25^{\circ}C$ for 48 h. The emulsion was consisted of perilla oil (33.12 g), 5% acetic acid (66.23 g), egg yolk powder (0.5 g), and xanthan gum (0.15 g), and Chlorophyll b was added to the emulsion at 0, 2.5 and 4 mg/kg. The lipid oxidation was evaluated by headspace oxygen consumption and hydroperoxide formation, and tocopherols and polyphenols were monitored by HPLC and spectrophotometry at 725 nm, respectively. The lipid oxidation of the perilla oil emulsion in the dark was not significant regardless of the addition of chlorophyll. Light increased and accelerated the lipid oxidation of the emulsion, and increased addition level of chlorophyll under light increased it further. However, there was no significant change in fatty acid composition in any case. Contents of tocopherols and polyphenols in the emulsion were not significantly changed during storage in the dark regardless of chlorophyll addition, indicating their little degradation. Tocopherols and polyphenols in the emulsion were significantly degraded during storage of the emulsion under light, and the degradation rate of polyphenols was increased with addition level of chlorophyll. The lipid oxidation of the perilla oil emulsion was inversely related with the residual amounts of tocopherols and polyphenols, with more dependent on the retention of polyphenols than that of tocopherols.
Keywords
perilla oil emulsion; oxidation; light; chlorophyll; tocopherols; polyphenols;
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Times Cited By KSCI : 5  (Citation Analysis)
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