KMID : 1011620080240010106
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Korean Journal of Food and Cookey Science 2008 Volume.24 No. 1 p.106 ~ p.113
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Effect of Gamma Irradiation on the Quality of Cooked Spinach During Storage
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Kim Min-Hee
Yang Yun-Hyoung Sim Hyun-Jung Son Chan-Wok Kim Mi-Yeon Kim Mi-Seon Lee Ju-Woon Byun Myung-Woo Kim Mee-Ree
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Abstract
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This study investigated the effects of gamma irradiation on microbial, physical, and sensory qualities as well as the antioxidant activity of cooked spinach. At 3 kGy of gamma irradiation, microbial growth was inhibited until 4 weeks and 5 days at storage temperatures of 4 and 25 ¡ÆC, respectively. The dose of 2 kGy did not significantly affect hardness; however, Hunter color system values for lightness, redness, and yellowness were changed. Low dose gamma-irradiation (up to 2 kGy) did not significantly affect the antioxidant activity of the cooked spinach. Also, based on a triangle sensory test, the gamma-irradiated cooked spinach was not significantly different from the control. These results, suggest that applying gamma irradiation to cooked vegetables at doses lower than 2 kGy can be recommended to extend shelf-life and maintain quality.
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KEYWORD
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Cooked spinach, gamma irradiation, quality, storage, antioxidative activity
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