Korean journal of food and cookery science (한국식품조리과학회지)

Korean Society of Food and Cookery Science (한국식품조리과학회)
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Sensory Characteristics of Citrus Vinegar fermented by Gluconacetobacter hanenii CV1

Gluconacetobacter hansenii CV1에 의해 발효된 감귤식초의 관능적 특성

  • Kim Mi-Lim (Cuisine & Nutrition, Daegu Haany University) ;
  • Choi Kyung-Ho (Department of Food Science and Nutrition, Daegu Catholic University)
  • 김미림 (대구한의대학교 식품조리영양학부) ;
  • 최경호 (대구가톨릭대학교 식품영양학과)
  • Published : 2005.04.01
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Abstract

Citrus juice, a concentrate manufactured by the Jeju Provincial Corporation, was converted into vinegar orderly by alcohol and acetate fermentation. The juice with 6 folds dilution by distilled water was used as the sole nutrient source through out experiments. Diluted juice contained $12.96^{\circ}Brix$ of total sugar, $0.632\%$ of total acid and $20.23{\mu}g/m{\ell}$ of hesperidin. Naringin was not detected from the juice. Citrus wine having $5.6\~6.3\%$ alcohol was produced from diluted juice by 3 days of fermentation at $28^{\circ}C$. A kind of malomelo yeast CMY-28 was used for wine fermentation. The wine was succeedingly fermented for 8 days at $30^{\circ}C$ after inoculation of seed vinegar which contained active cells of acid producing bacteria CV1. Inoculum size of seed vinegar was controlled to $10\%$(v/v) of citrus wine. The wine converted into vinegar by the fermentation. Citrus vinegar, the final product of fermentation, was colored with very thin radish-yellow and transparent. It's acidity ranged between $5.8\~6.2\%$ as acetic acid. The vinegar got the best score by sensory test among several natural fruit vinegars. It was clear from the results that citrus vinegar in high quality could be produced from concentrated citrus juice, however fermentation conditions should be improved to reduce the amount of reducing alcohol.

제주 감귤복합가공공장에서 제조한 감귤농축액을 재료로 감귤식초를 발효하고 관능검사를 실시하였다. 감귤농축액은 신선과즙에 비하여 naringin 및 hesperidin 함량이 낮을 뿐만 아니라 당도와 산도가 높아 식초발 효용으로 적합하였다. 6배 희석한 감귤농축액에 효모(CMY-28)를 접종하고 $28^{\circ}C$에서 3일간 발효하여 알콜도수 $5.6\~6.3\%$의 식초산 발효용 원주를 제조하였다. 여기에 분리한 식초산 발효균(Glucoacetobacter sp. CV1)을 접종하여 $30^{\circ}C$에서 8일간 발효하여 산도 $5.8\~6.2\%$의 감귤식초를 제조하였으며, 관능검사에서 국내에서 유통되는 천연과즙식초 중에서 가장 우수한 것으로 평가되었다. 다만, 식초발효 과정에서 알콜 잔류량이 $2.5\%$를 상회하여 이의 개선이 필요한 것으로 판정되었다.

Keywords

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