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Quality Characteristics of Apple Vinegar by Agitated and Static Cultures

교반 및 정치배양에 따른 사과식초의 품질특성

  • Jang, Se-Young (Dept. of Food Science and Technology, Keimyung University and Keimyung Foodex Co., Ltd.) ;
  • Sin, Kyung-A (Dept. of Food Science and Technology, Keimyung University and Keimyung Foodex Co., Ltd.) ;
  • Jeong, Yong-Jin (Dept. of Food Science and Technology, Keimyung University and Keimyung Foodex Co., Ltd.)
  • 장세영 (계명대학교 식품가공학과 및 (주)계명푸덱스) ;
  • 신경아 (계명대학교 식품가공학과 및 (주)계명푸덱스) ;
  • 정용진 (계명대학교 식품가공학과 및 (주)계명푸덱스)
  • Published : 2010.02.27

Abstract

Quality characteristics of apple vinegar by using agitated and static cultures without any additive were compared. pH was reduced with passage of acetic acid fermentation time. Total acidity of the agitated culture vinegar (A) was 6.08% at the 8 day according to the progress of fermentation and that of the static culture vinegar (B) recorded 5.20% at the 60 day of fermentation. There was no significant difference in sugar content of (A) and (B). L value was lower in (B) than (A) but a and b values were higher in (B) than (A). Organic acid content of (A) was high only in acetic acid but malic, citric and succinic acids appeared high in (B). As free sugar, fructose and glucose were observed in both of them. In sensory examination results, (B) showed the highest taste and overall preferences. From all of these results traditional static culture are expected to be used to make high-quality vinegar.

국내산 사과를 원료로 일체의 첨가물을 사용하지 않고 교반 및 정치배양법으로 각각의 사과식초를 제조하여 품질을 비교하였다. 사과식초의 pH는 초산발효기간이 지남에 따라 낮아졌으며, 총산은 증가하였다. 교반배양 사과식초(A)는 발효 8일째에 6.08%, 정치배양 사과식초(B)는 발효 60일째에 5.20%로 나타나 교반배양법(A)으로 제조한 사과식초가 총산은 높게 나타났으며, pH와 당도는 식초 간에 큰 차이는 없었다. L값은 정치배양 사과식초(B)가 교반배양 사과식초(A)에 비해 더 낮게 나타났으나 a값, b값은 높게 나타났다. 유기산 함량은 교반배양 사과식초(A)에서는 acetic acid만 높았으나 정치배양 사과식초(B)에서는 malic acid, citric acid 및 succinic acid도 높게 나타났다. 유리당은 교반배양 사과식초(A), 정치배양 사과식초(B) 모두에서 fructose, glucose가 검출되었다. 사과식초의 관능검사 결과, 맛과 전반적 기호도에서 정치배양 사과식초(B)가 가장 높은 평점을 얻었다. 이상의 결과 전통적인 정치배양법으로 고품질의 사과식초 제조가 가능할 것으로 기대된다.

Keywords

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