Journal of the East Asian Society of Dietary Life (동아시아식생활학회지)

The East Asian Society of Dietary Life (동아시아식생활학회)
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Quality Characteristics of Yanggeng Prepared with Different Concentrations of Mulberry Fruit Syrup

오디시럽을 이용한 오디양갱 제조 및 품질특성

  • Kim, Ae-Jung (The Graduate School of Alternative Medicine, Kyonggi University)
  • 김애정 (경기대학교 대체의학대학원)
  • Received : 2012.01.31
  • Accepted : 2012.02.25
  • Published : 2012.02.29
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Abstract

In this research, mulberry fruit was processed into mulberry fruit syrup (MFS) using sugar and then used as stabilizer for anthocyanine pigment in yanggeng. MFS was added to the yanggeng in order to make mixture ratio of 0%, 5%, 10%, 15% and 20%. The resulting sensory and physicochemical aspects, as compared between the various MFS ratio were investigated. The yanggeng L and b values decreased with increasing ratio of MFS. With addition of MFS the sensory evaluation results for, taste, color, flavor, texture and overall acceptability improved. The yanggeng prepared using MFS found to possess more effective antioxidants behavior as observed by in vitro evaluating 1,1-diphenyl-2-picrylhydrazyl(DPPH) radical scavenging and superoxide radical activities. The $IC_{50}$ of the antioxidant was found to be proportional to the mulberry fruit syrup concentration in the yanggeng.

본 연구에서는 오디 색소인 안토시안을 당으로 안정화시키기 위해 오디시럽으로 제조한 후 오디시럽의 농도를 0%, 5%, 10%, 15% 및 20%로 달리하여 오디시럽양갱을 제조한 후 품질특성과 항산화 활성을 평가하였다. 오디시럽 수준이 높아질수록 오디양갱의 명도(L)값과 황색도(b)값은 감소된 반면 적색도(a)값은 증가하였다. 기계적 물성측정 결과를 보면 경도, 검성 및 씸힘성의 값이 증가하였는데, 이는 오디 pH의 영향으로 생각되며, 관능검사에서도 오디시럽 첨가수준 15%와 20%가 별 차이 없이 좋은 관능평가 점수(맛, 색, 물성 및 전체적인 기호도)가 나온 것과도 관련이 있다고 보여진다. 즉, 오디시럽 수준이 높아질수록 산도의 영향을 받아 식미가 좋아진 것으로 생각 된다. 오디시럽 첨가 양갱의 DPPH 소거능을 $IC_{50}$ 값으로 나타내었을 때 오디시럽 첨가농도가 올라갈수록 $IC_{50}$ 값이 유의적으로 낮아졌는데, 대조군에 비해 MFSY15와 MFSY20의 DPPH 소거능은 각각 17배, 20.1배 증가하였다. 오디시럽 첨가 양갱의 superoxide radical 소거능의 $IC_{50}$값의 경우도 오디시럽 첨가수준이 높아질수록 낮게 나타났다. 따라서 항산화 활성, 관능검사 및 기계적 물성 결과를 함께 고려해 볼 때는 오디시럽이 15%가 첨가된 양갱 시료의 실용화가 바람직할 것으로 판단된다.

Keywords

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