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KMID : 0665220130260010092
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Korean Journal of Food and Nutrition
2013 Volume.26 No. 1 p.92 ~ p.100
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Quality Characteristics and Antioxidant Activity of Gaeseong-Juak prepared with Prunus yedoensis Matsumura Extract
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Ju Shin-Yoon
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Abstract
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This study investigated the quality and antioxidative properties of a Korean fried rice cake, Gaeseong-Juak (doughnut of waxy rice) added with Prunus yedoensis Matsumura (PYM) extract, vitamin C and BHT. Gaeseong-Juak was prepared by adding PYM extract at 0, 0.5, 1, and 2% of waxy rice powder. The moisture contents of Gaeseong-juak added with PYM extract varied between 17.50% and 21.70%. Among the samples, the lowest moisture content was 2% Gaeseong-juak added with PYM extract. The contents of the samples obtained from crude protein, crude fat, crude ash were 4.47～4.73, 11.15～12.50, and 0.73～0.82%, respectively. The as the content of PYM extract increased, L-values significantly decreased while a-value and b-value significantly increased (p<0.001). The texture profile analysis of the Gaeseong-Juak was not significantly different at the samples. In the sensory test, the sample containing 0.5% PYM extract obtained good scores. The antioxidative effect of the Gaeseong-Juak significantly increased as the addition level increased, compared to the original Gaeseong-Juak (p<0.001). From these results, we suggest that PYM is a good ingredient for increasing the consumer acceptability and the functionality of Gaeseong-Juak.
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KEYWORD
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antioxidant activity, Prunus yedoensis Matsumura, Gaeseong-juak, quality characteristics
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