Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Quality characteristics of steamed rice cake with Schisandra chinensis powder or extract added prior to storage

오미자 분말 및 추출물 첨가 설기떡의 저장 중 품질특성

  • Kim, Dae-Hyun (Korea Food Research Institute) ;
  • Cho, Jeong-Seok (Department of Food Science and Technology, Kyungpook National University) ;
  • Park, Jung-Hoon (Department of Food Science and Technology, Kyungpook National University) ;
  • Kim, Jae-Hwan (Jisan Food System Co., Ltd.) ;
  • Moon, Kwang-Deog (Department of Food Science and Technology, Kyungpook National University)
  • Received : 2016.07.15
  • Accepted : 2016.11.09
  • Published : 2016.12.30
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Abstract

The purpose of this study was to improve the quality of the steamed rice cakes added with powder and extract of Schisandra chinensis (SC). Steamed rice cakes were prepared by adding SC using 1% hot-air dried SC powder (DP), hot-air dried SC extract (DE), freeze dried SC powder (FP) and, frozen SC extract (FE). After packaging with nylon/polyethylene films, the cakes were stored at $25^{\circ}C$ for 5 days. The FE-treated steamed rice cake had the lowest pH value. The $L^*$ value of the control cakes was highest immediately after processing and decreased during storage. The $a^*$ values of FP- and FE-treated steamed rice cakes were higher than those of DP- and DE-treated cakes. The $b^*$ values of DP- and DE-treated steamed rice cakes were higher than those of FP- and FE-treated cakes. Total phenolic contents of DP and DE were lower than those of FP and FE. Anthocyanin contents of DP- and DE-treated steamed rice cakes were lower than those of FP- and FE-treated cakes. Schisandrin contents of DP- and FP-treated steamed rice cakes were lower than those of DE- and FE-treated cakes. Ferric reducing antioxidant power assays revealed that DP and DE had lower antioxidant powers than those of FP and FE. The results of this study indicate that, among the treatments methods used, the steamed rice cake treated with FE had the highest functional component and antioxidant activity levels.

열풍건조 오미자 분말(DP), 열풍건조 오미자 추출물(DE), 동결건조 오미자 분말(FP), 동결 오미자 추출물(FE)을 각각 1% 첨가한 설기떡을 $25^{\circ}C$에서 5일간 저장하며 이화학적 특성, 기능성 성분 및 항산화 활성을 연구하였다. pH는 동결 오미자 추출물 첨가 설기떡이 4.19로 낮은 값을 나타냈으며, 대조구는 6.43으로 높은 값을 나타내었다. 대조구는 저장기간 중 낮아지는 경향을 나타냈으나, 오미자 분말 및 추출물 첨가구는 유의적 차이가 없었다. $L^*$ value는 가공 직후 대조구의 값이 가장 높았으나, 저장기간 중 감소하였다. $a^*$ value는 동결건조 오미자 첨가구가 열풍건조 오미자 첨가구보다 높은 값을 나타내었으며, $b^*$ value는 열풍건조 오미자 첨가구가 동결 오미자 첨가구 보다 높은 값을 나타내었다. 총 페놀 함량 및 FRAP 활성은 동결 오미자 첨가구가 열풍건조 오미자 첨가구 보다 높은 함량을 나타내었다. Anthocyanin 및 schisandrin은 대조구에서 검출되지 않았다. 안토시아닌 함량은 열풍건조 오미자 첨가구 보다 동결 오미자 첨가구에서 높은 함량을 나타내었다. Schisandrin 함량은 오미자 분말 첨가구보다 오미자 추출물 첨가구에서 높은 함량을 나타내었다. 이상의 결과를 토대로 기능성 성분 및 항산화능을 고려하여 볼 때 동결 오미자 추출물을 설기떡에 첨가하면 우수한 설기떡을 제조할 수있을 것으로 판단된다.

Keywords

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