Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Characteristics of Curd Yogurt from Milk Added with Maesil (Prunus mume)

매실(Prunus mume)을 첨가한 호상요구르트의 품질 특성

  • Lee, Eun-Hee (Department of Food and Nutrition, Kyungwon University) ;
  • Nam, Eun-Sook (Department of Agriculture, Korea National Open University) ;
  • Park, Shin-In (Department of Food and Nutrition, Kyungwon University)
  • 이은희 (경원대학교 식품영양학과) ;
  • 남은숙 (한국방송통신대학교 농학과) ;
  • 박신인 (경원대학교 식품영양학과)
  • Published : 2002.06.01
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Abstract

Characteristics of curd yogurt containing maesil extract and flesh, and mixed cultures of lactic acid bacteria (Streptococcus thermophilus, Lactobacillus acidophilus, and L. casei) were investigated redundant. The results of sensory evaluation of curd yogurts containing maseil indicated that color, odor, taste, flesh amount, aftertaste, and overall acceptability of the 3% maesil extract crud yogurt added with 20% maesil flesh showed higher preference than others. The contents of free fatty acid and citric acid of curd yogurts added with 3% maesil extract were higher than the specify sample. The Hunter L (brightness) value of curd yogurt added with 3% maesil extract was not significantly different from the control curd yogurt, while the Hunter a (redness) and Hunter b (yellowness) values were higher. The hardness, adhesiveness, and gumminess of 3% maesil extract curd yogurts added with 20% maesil flesh were higher than others.

매실 착즙액과 매실 과육을 첨가한 호상요구르트를 제조하기 위하여 탈지분유에 S. thermophilus와 L. casei를 혼합한 균주와 S. thermophilus, L. acidophilus와 L. casei를 혼합한 균주를 접종하여 매실 착즙액이 젖산균의 생육에 미치는 영향 및 관능적 특성과 품질 특성을 조사하였다. 매실 착즙액의 첨가는 젖산균의 생육과 산생성을 약간 증가시켰다. 실험구 중 S. thermophilus, L. acidophilus와 L. casei의 혼합균주에 3% 매실 착즙액을 첨가한 실험구가 가장 많은 양의 젖산(1.23%)을 생성하였고, 가장 높은 생균수$(3.6{\times}10^{11}\;CFU/mL)$를 나타내었다. 관능검사 결과 매실 착즙액 3% 첨가 호상요구르트에 20%의 당에 절인 매실 과육을 첨가한 실험구의 선호도가 가장 좋은 것으로 평가되었다. 매실 첨가 호상 요구르트의 일반 성분은 대조구보다 유리지방산, 구연산이 많은 것으로 나타났고, 무지고형분은 시료 모두 $9.58{\sim}9.94%$ 함유되어 있어 호상요구르트의 규격에 부합하였다. 색도 측정 결과 명도(L) 값은 유의적 차이가 없었으나, 적색도(a)와 황색도(b)는 매실 첨가 호상요구르트가 유의적으로 높은 값을 나타내었다. 매실 첨가 호상요구르트의 물리적 특성을 조사하였을 때, 매실 착즙액 3%를 첨가하여 발효시킨 후 20%의 당에 절인 매실 과육을 첨가한 실험구가 매실 착즙액 3% 첨가 호상요구르트와 대조구에 비하여 hardness, adhesiveness, gumminess가 유의적으로 매우 높은 값을 나타내었다. 따라서 매실 첨가 호상요구르트는 기호성과 품질 특성이 우수하고 영양학적으로도 훌륭한 상품적 가치가 인정되는 새로운 기능성 요구르트로서의 가치가 있을 것으로 사료된다.

Keywords

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