Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Physiochemical Properties, and Antioxidative and Alcohol-metabolizing Enzyme Activities of Nectarine Vinegar

천도복숭아 식초의 이화학적 특성과 항산화 및 알코올 대사 효소 활성

  • 정경임 (신라대학교 식품영양학과) ;
  • 정한나 (신라대학교 식품영양학과) ;
  • 하나연 (한국전통발효문화연구원) ;
  • 최영주 (신라대학교 식품영양학과)
  • Received : 2018.08.20
  • Accepted : 2018.10.08
  • Published : 2018.10.30
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Abstract

This study investigated the physiochemical properties, antioxidative, nitrite-scavenging, and alcohol metabolism enzyme activities of nectarine vinegar prepared by a traditional fermentation method. The pH of nectarine vinegar was 3.70, the sugar content was $8.87^{\circ}Brix$, and the total acidity was 6.29%. Among organic acids detected, acetic acid was highest at 32.42 mg/ml, followed by lactic acid, malic acid, and succinic acid. Total phenol content of the nectarine vinegar was $121.84{\mu}g$ tannic acid equivalents (TAE)/100 ml. The antioxidative effects of muskmelon vinegar were measured using 1,1-Diphenyl2-picrylhydrazy (DPPH) radical-scavenging activity and superoxide dismutase (SOD) assay. DPPH of nectarine vinegar was increased in a dose-dependent manner, which was 84.47% at 40% concentration. SOD activity was increased in a dose-dependent manner, which was 89.06% at 60% concentration. Nitric scavenging activities of nectarine vinegar were 94.17%, 76.91%, and 20.21% at pH values 1.2, 3.0, and 6.0 at 100% concentration, respectively. The effects of nectarine vinegar on alcohol-metabolism were determined by measuring the generation of reduced nicotinamide adenine dinucleotide (NADH) by alcohol dehydrogenase (ADH) and acetaldehyde dehydrogenase (ALDH). ADH and ALDH activities of nectarine vinegar were increased in a dose-dependent manner, which were 153.61% and 178.20 % at 60% concentration, respectively. These results suggest that nectarine vinegar has great potential as a resource for high quality functional health beverages.

본 연구에서는 전통적인 방법으로 제조한 천도복숭아식초의 이화학적 특성과 항산화 작용, 아질산염 소거능 및 알코올 대사 효소 활성을 알아보았다. 천도복숭아식초의 pH는 3.70이였고, 당도는 $8.87^{\circ}Brix$였으며, 총산도는 6.29%로 나타났다. 천도복숭아식초의 유기산 분석 결과 acetic acid가 32.42 mg/ml로 가장 높았고, 그 다음으로 lactic acid, succinic acid, malic acid의 순으로 나타났다. 천도복숭아식초의 총 페놀함량은 $121.84{\mu}g\;TAE/100ml$로 나타났다. 천도복숭아식초의 DPPH radical 소거능은 농도 의존적으로 증가하였으며 40% 농도에서 84.47%의 소거능을 보였다. SOD 활성 또한 농도 의존적으로 증가하였으며 60% 농도에서 89.06%로 나타났다. 아질산염 소거능 분석에서는 천도복숭아식초 100% 농도, pH 1.2, 3.0, 6.0에서 각각 94.17, 76.91, 20.21%로 pH가 낮을수록 아질산염 소거능이 증가하는 것으로 나타났다. 천도복숭아 식초의 알코올 분해효과를 알아보기 위하여 ADH 활성 및 ALDH 활성을 분석한 결과, ADH 활성 및 ALDH 활성 모두 농도 의존적으로 증가하였으며, 60% 농도에서 각각 153.61%와 178.20%로 나타났다. 이상의 결과에서와 같이 전통적인 방법으로 제조한 천도복숭아식초는 기능성 건강음료로서의 가능성이 있음을 확인할 수 있었다.

Keywords

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