Effects of Chlorophyll and Carotene on Lipid Oxidation and Tocopherols during Heating for Manufacturing of Perilla and Rice Porridge
2012
Chung, L.N., Kyung Hee University, Seoul, Republic of Korea | Lee, J.Y., Nongshim Co., Ltd., Seoul, Republic of Korea | Oh, S.J., Inha University, Incheon, Republic of Korea | Choe, E.O., Inha University, Incheon, Republic of Korea
The effects of chlorophyll (0.33 mg/kg) and β-carotene (3.3, 9.9, 19.8 mg/kg) addition to a mixture of roasted perilla seeds, rice, and water (30:45:225, w/w/w) on the lipid oxidation and tocopherol contents were studied during heating at 100℃ for 120 min to simulate cooking of perilla and rice porridge. Lipid oxidation was evaluated with peroxide values (POV) and conjugated dienoic acid (CDA) values, and chlorophyll, β-carotene, and tocopherols were determined by HPLC, POV, and CDA values were increased during heating, indicating the occurrence of lipid oxidation in the perilla and rice porridge. β-Carotene decreased the POV and CDA values of the samples in a concentration-dependent manner, while the addition of chlorophyll did not affect them. Chlorophyll and β-carotene which were added, and tocopherols naturally present in samples were degraded, following the first order kinetics during heating, and β-carotene protected tocopherols from degradation.
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