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Quality Characteristics and Antioxidative Activities of Acorn Starch Mook Added Spirulina and Soy Protein

스피루리나와 대두단백을 첨가한 도토리묵의 품질특성 및 항산화성

  • Oh, Hye Lim (Dept. of Food & Nutrition, Chungnam National University) ;
  • Yang, Kee Heun (Dept. of Food & Nutrition, Chungnam National University) ;
  • Park, Song Yi (Dept. of Food & Nutrition, Chungnam National University) ;
  • Yoon, Jun Hwa (Dept. of Food & Nutrition, Chungnam National University) ;
  • Shim, Eun Kyoung (Dept. of Food & Nutrition, Chungnam National University) ;
  • Lee, Kun Jong (Dept. of Food & Nutrition, Seoil College) ;
  • Kim, Mee Ree (Dept. of Food & Nutrition, Chungnam National University)
  • 오혜림 (충남대학교 식품영양학과) ;
  • 양기현 (충남대학교 식품영양학과) ;
  • 박송이 (충남대학교 식품영양학과) ;
  • 윤준화 (충남대학교 식품영양학과) ;
  • 심은경 (충남대학교 식품영양학과) ;
  • 이근종 (서일대학교 식품영양학과) ;
  • 김미리 (충남대학교 식품영양학과)
  • Received : 2012.08.02
  • Accepted : 2012.09.10
  • Published : 2012.11.30

Abstract

This study evaluate the quality characteristics and antioxidative properties of acorn starch mook containing spirulina (0%, 0.5%, 1%, 1.5%) and soy protein (3%). The pH of acorn starch mook containing the spirulina and soy protein decreased with increasing amount of spirulina decrease in pH means an increase in acidity. In addition, the moisture content was 87%. The lightness of acorn starch mook containing spirulina and soy protein decreased with increasing amount of spirulina and soy protein. The L and a values of the Hunter color system were decreased significantly increasing spirulina content, and the b value increased. In contrast, with increasing spirulina and soy protein content, the L and a increased significantly and the b value. Texture analysis revealed higher hardness and springiness of acorn starch mook containing spirulina than the control. The total phenol content was highest in the acorn starch mook containing 1.5% spirulina and 3% soy protein. The antioxidant activities of the acorn starch mook containing spirulina and soy protein increased with increasing amount of spirulina and soy protein. The $IC_{50}$ value of 1.5% spirulina and 3% soy protein was 166.2 mg/mL for DPPH. The results of the sensory test were best in the acorn starch mook containing 1% spirulina.

본 연구는 식품 중 지용성 항산화 물질인 카로티노이드 성분을 가장 많이 함유하고 있으며, 피코시아닌이라는 수용성 항산화 물질을 고농도로 함유하고 있는 스피루리나를 도토리묵에 첨가하여 영양이 풍부하고 기능성이 우수한 도토리묵을 개발하여 상품화하기 위한 기초 자료로 활용하고자 한 것으로 스피루리나 및 대두단백을 첨가한 도토리묵의 품질특성 및 항산화성을 분석하였다. pH는 스피루리나 첨가량이 증가할수록 감소하였다. 스피루리나 0.5%에 대두단백 3%를 첨가하면 pH가 증가하지만 1%와 1.5%에서는 다시 감소하는 경향을 나타내었다. 산도는 스피루리나 양이 증가할수록 높아졌으며, 대두단백을 첨가한 경우에도 증가하였다. 색도는 스피루리나 첨가량 증가에 따라 L값과 a값은 감소하였으나, b값은 증가하였다. 물성 중 경도는 스피루리나 양이 1% 첨가되었을 때 스피루리나를 넣은 것과 스피루리나에 대두단백을 첨가한 것 모두에서 높았다. 탄력성은 스피루리나를 첨가할수록 증가하는 경향을 보였고, 대두단백을 첨가하면 유의적으로 감소하였다(p<0.05). DPPH와 페놀함량을 측정한 결과에서는 스피루리나 양이 증가할수록 항산화성이 컸으며, 대두단백첨가에서도 스피루리나만 첨가했을 때보다 항산화성이 더 높은 것으로 나타났다. 총 페놀 함량에서는 스피루리나 1.5%와 대두단백 3%를 첨가했을 때 2,901 mg/mL로 가장 높았으며, 그 다음으로는 스피루리나 1.5%만 첨가했을 때 2,667.2 mg/mL였다. 관능평가의 결과 색상은 스피루리나를 첨가할수록 진해지며, 스피루리나에 대두단백을 함께 넣은 경우 대체적으로 스피루리나만 첨가했을 때보다 연하였다. 탄력성은 스피루리나 첨가량이 증가할수록 높아졌으며, 대두단백 3%와 스피루리나 1% 첨가한 시료에서 가장 탄력성이 좋은 것으로 나타났다. 선호도가 가장 높은 시료는 스피루리나만 0.5%를 첨가한 것이었으며 대두단백을 혼용하여 첨가한 경우에서는 스피루리나만 첨가한 시료보다 대체적으로 선호도가 낮았다. 이상의 연구 결과를 통해 최근 들어 기능성식품으로 각광을 받고 있는 스피루리나를 첨가하여 도토리묵을 제조할 경우 첨가량은 0.5%가 적당하다고 생각되며, 스피루리나 첨가 요구르트의 제조(27)에 있어 최적 첨가량은 스피루리나 0.25%로 나타난 연구와 0.8%를 첨가한 식빵의 관능적 기호성 향상(9)에서 볼 수 있듯이 0.5%의 스피루리나를 관능적 기호도 향상과 항산화성이 증가된 도토리묵으로 제조한다면 상품화가 가능할 것으로 사료된다.

Keywords

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