Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Antioxidant and quality characteristics of mungbean starch gel added with peach seed powder

복숭아 씨앗 분말을 첨가한 청포묵의 항산화 기능 및 품질 특성

  • 류형민 (인하대학교 식품영양학과) ;
  • 전대광 (인하대학교 식품영양학과) ;
  • 김상아 (인하대학교 식품영양학과) ;
  • 정현정 (인하대학교 식품영양학과)
  • Received : 2013.05.03
  • Accepted : 2013.06.05
  • Published : 2013.06.30
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Abstract

The objective of this study was to evaluate the quality characteristics of mungbean starch gels that were prepared with different concentrations (0, 0.5, 1.0 and 1.5%) of peach seed powders (PSP), which exhibit antioxidant characteristics. Mungbean starch gel samples were prepared and subjected to quality characteristics such as moisture content, general components, color, texture profile analysis, total polyphenol contents, DPPH radical scavenging activity, and sensory qualities. The L-value and the a-value for color decreased significantly, whereas the b-value increased significantly as the PSP concentration increased (p<0.05). In the texture profile analysis, the mungbean starch gel with 1.5% PSP showed significantly lower degrees of hardness, cohesiveness, springiness, gumminess and brittleness (p<0.05). The total polyphenol content was highest in the 1.5% PSP to which mungbean starch gel was added, which also showed a higher than 70% DPPH radical scavenging activity level in a dose-dependent manner (p<0.05). In the sensory test of the mungbean starch gel, its sensory scores for flavor and taste were highest in the 0.5% PSP to which mungbean starch gel was added.

본 연구는 폴리페놀이 다량 함유되어 있는 복숭아씨(桃仁)를 분말상태로 우리나라의 전통 식품인 청포묵에 적용하여 품질특성 및 항산화성에 미치는 영향을 알아보았다. 복숭아씨 분말의 비율을 각각 0, 0.5, 1.0, 1.5%로 하여 제조한 청포묵은 비율이 높아질수록 명도(L)와 적색도(a)는 낮아지는 경향을 보였으나, 황색도(b)는 1.5%에서 가장 높은 값인 -58.96을 나타내었다. 청포묵의 기계적 품질 특성은 대조군이 모든 특성면에서 가장 높았고, 복숭아씨 분말이 첨가될수록 경도, 응집성, 탄력성, 씹힘성, 부서짐성이 모두 유의적으로 낮아지는 경향을 보였다. 총 폴리페놀 함량의 경우는 복숭아씨 분말을 첨가한 청포묵이 대조군에 비해 높았으며 복숭아씨 분말을 1.5% 첨가하였을때 가장 높은 값을 나타내었다. 또한 복숭아씨 분말 첨가량이 높은 청포묵이 높은 DPPH 라디칼소거능을 나타내었다. 관능적 품질 특성은, 다른 관능적 특성은 비슷한 경향을 보였으나 향과 맛에 있어서는 차이점을 보였다. 특히 0.5%를 첨가한 청포묵에서 향 6.0점, 맛 5.5점으로 가장 높은 기호도를 보였고, 첨가량이 증가하게 되면 오히려 기호도가 줄어드는 경향을 보였다. 이러한 결과를 종합해 보면, 기호도 측면에서 대조구와의 차이가 크지 않은 0.5%를 첨가하는 것이 청포묵의 항산화성도 증진시키고 기계적 및 관능적 품질 특성에도 기여할 것으로 사료된다.

Keywords

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