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Effect of Pan-frying on Anthocyanin Content in Hwajeon with Varying Proportion of Glutinous Black Rice Flour

팬 프라잉(Pan-frying)이 찰흑미 첨가 화전의 안토시아닌 함량에 미치는 영향

  • Surh, Jeonghee (Dept. of Food and Nutrition, Kangwon National University) ;
  • Koh, Eunmi (Dept. of Food and Nutrition, Seoul Women's University)
  • 서정희 (강원대학교 식품영양학과) ;
  • 고은미 (서울여자대학교 식품영양학과)
  • Received : 2014.06.13
  • Accepted : 2014.06.20
  • Published : 2014.08.31

Abstract

Hwajeon, pan-fried rice cake, containing glutinous black rice flour at different proportions (0, 5, 10, 20, 30, or 50% of glutinous rice flour) was cooked to investigate the cooking effect on anthocyanins, color, and texture. Two anthocyanins, cyanidin-3-glucoside and peonidin-3-glucoside, were detected in both hwajeon dough and pan-fried hwajeon. The hwajeon retained up to 60% of anthocyanins in the dough after pan-frying. The lightness (L) of dough and hwajeon decreased with an increase in the amount of black rice flour rice flour. Interestingly, the lightness (L) of hwajeon was significantly lower than the counterpart dough, indicating that the color of hwajeon resulted not only from anthocyanins, but also from the browning reaction occurring during pan-frying. The redness (a) of hwajeon initially increased by adding glutinous black rice flour, and decreased at higher than 10% of black rice flour. In comparison with the control hwajeon (0% black rice flour), the black rice-added hwajeon showed lower hardness, whereas it had higher springiness and cohesiveness, resulting in no significant differences in gumminess and chewiness among the hwajeon. These results indicate that hwajeon enriched with glutinous black rice flour can be developed as a functional food containing health-promoting anthocyanins.

Keywords

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