Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Quality Comparison of Commercial Cider Vinegars by Their Acidity Levels

시판 사과식초의 산도에 따른 품질특성 비교

  • Jo, Deokjo (Department of Food Science and Technology, Kyungpook National University) ;
  • Park, Eun-Joo (Department of Food Science and Technology, Kyungpook National University) ;
  • Kim, Gui-Ran (Department of Food Science and Technology, Kyungpook National University) ;
  • Yeo, Soo-Hwan (Fermentation and Food Processing Division, Department of Agrofood Resources, NASS, RDA) ;
  • Jeong, Yong-Jin (Department and Food Science and Technology, Keimyung University) ;
  • Kwon, Joong-Ho (Department of Food Science and Technology, Kyungpook National University)
  • Received : 2012.09.17
  • Accepted : 2012.10.11
  • Published : 2012.12.31
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Abstract

The quality of commercial cider vinegars was compared according to their acidity levels (low, general, double strength and triple strength). The pH, reducing sugar content and brown color intensity decreased, while the total acidity increased with the increasing acidity levels, which may be resulted from difference in formulation and manufacturing procedures. The free sugars were mainly composed of fructose and glucose, which were the highest in low acidity vinegar, followed by double strength, general, and triple strength acidity vinegars. Acetic acids and malic acids were identified as the major organic acids. The citric acid concentration was the highest in triple strength vinegars. The contents of total phenolics and flavonoids were the highest in low acidity vinegars, which indicated their dependence on the apple juice content. DPPH and ABTS radical scavenging abilities were the highest in low acidity vinegars, that showed high amounts of antioxidants.

시판 사과식초의 총산 함량에 따른 이화학적 품질특성을 비교하였다. 사과식초 산도의 증가에 따라 pH는 감소하였고, 총 산도는 증가하였다. 환원당 함량 및 갈색도는 산도의 증가에 따라 감소하는 경향을 나타내었는데, 이는 제조과정의 차이가 최종 제품에 영향을 미친 것으로 사료되었다. 유리당은 산도에 관계없이 fructose의 함량이 가장 높게 나타났고, glucose의 함량이 그 뒤를 이었다. 총 유리당 함량은 저산도, 2배 산도, 일반산도, 3배 산도식초의 순으로 확인되었다. 유기산의 경우 acetic acid와 malic acid가 주로 확인되었다. 원료 중 과즙의 함량이 가장 높은 저산도 식초에서는 oxalic acid, citric acid, tartaric acid 등이 확인되었고, 구연산이 사용된 3배 산도 식초의 경우 citric acid 함량이 가장 높게 확인되었다. 총 페놀 및 총 플라보노이드 함량은 저산도 식초에서 가장 높게 측정되어 사과과즙 함량의 차이가 최종 제품의 함량에 어느 정도 영향을 미친 것으로 추측되었다. 시료의 DPPH 및 ABTS radical 소거능은 항산화물질의 함량이 높은 저산도 식초에서 가장 높게 확인되었다.

Keywords

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