Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Growth Characteristics and Production of Cellulose of Microorganisms in Static Culture Vinegar

정치배양중 식초 오염균의 생육특성과 cellulose 생산

  • Published : 2003.12.01
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Abstract

The characteristics of a strain that contaminates the manufacturing of rice vinegar by Acetobacter pasteruianus was invetigated. Conditions for inhibiting pellicle formation and growth of the contaminant, which occurs during static culture and storage, were also observed. Examining the morphological, cultural, and physiological characteristics and measuring the amount of cellulose production during static culture for 14 day, we found that the strain was known to be Acetobacter xylinum. No growth was observed below $10^{\circ}C$ as well as over $40^{\circ}C$. Also, the extent of growth was limited when the concentrations of ethanol, NaCl, and acetic acid were more than 10%, 1.5%, and 7%, respectively.

식초공장에서 Acetobacter pasteruianus로 정치배양중인 식초 생산과정과 숙성중인 현미식초를 오염시켜 균막을 형성한 것으로부터 균을 분리하여 식초를 오염시키는 균의 특성을 밝히고자 하였다. 공장에서 식초제품을 생산하거나 가정에서 식초제품을 사용할 경우에 오염을 일으키는 초산균의 생육에 관하여 배양조건 및 생육억제 방법을 검토하였다. 초산균에 오염되어 균막이 형성된 식초로부터 초산균을 분리하여 형태학적, 배양적 및 생리학적 특성을 검토한 결과 Acetobacter속에 포함됨을 알 수 있었다. 그리고 정치배양 기간 동안에 셀룰로오스 생산량을 확인하고자 14일간 배양한 결과 두꺼운 셀룰로오스를 생성하여 Acetobacter xylinum으로 판단되었으며 7%이상의 초산농도와 10%의 에탄올농도, 1.5%의 NaCl농도, $10^{\circ}C$ 이하와 $40^{\circ}C$ 이상의 온도에서 생육할 수 없었다.

Keywords

References

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