Journal of Food Hygiene and Safety (한국식품위생안전성학회지)

The Korean Society of Food Hygiene and Safety (한국식품위생안전성학회)
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Evaluation of the Natural Antimicrobials against Yeasts in Functional Beverages to Control Quality loss

효모에 의한 기능성 음료 변질 제어를 위한 천연항균물질 항균력 평가

  • Yeon, Ji-Hye (Department of Food Science and Technology, Chung-Ang University) ;
  • Lee, Ji-Young (Department of Food Science and Technology, Chung-Ang University) ;
  • Lee, Hee-Seok (Department of Food Science and Technology, Chung-Ang University) ;
  • Ha, Sang-Do (Department of Food Science and Technology, Chung-Ang University) ;
  • Park, Chul-Soo (Kwang-Dong Pharmaceutical Co., Ltd.) ;
  • Woo, Moon-Jea (Kwang-Dong Pharmaceutical Co., Ltd.) ;
  • Lee, Sang-Hun (Kwang-Dong Pharmaceutical Co., Ltd.) ;
  • Kim, Jin-Soo (Kwang-Dong Pharmaceutical Co., Ltd.) ;
  • Lee, Chon (Department of Food Science and Technology, Chung-Ang University)
  • Published : 2009.09.30
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Abstract

We investigated eight active natural antimicrobials for preservation of functional beverages that are usually degraded by yeasts rather than by bacteria due to a high sugar content and a low pH. Five strains of yeasts (S. cerevisiae, Z. bailii, P. membranaefaciens, C. albicans, and P Anomala) were tested with eight natural antimicrobial agents ($\varepsilon$-polylysine, yucca extract, vitamin $B_1$ derivative, scutellaria baicalensis extract, chitooligosaccharid, allyl isothiocyanate, sucrose-fatty acid ester, and oligosaccharide). The lowest minimal inhibitory concentrations (MIC) were 10 ppm for oligosaccharide and sucrose-fatty acid ester against S. cerevisiae and Z. bailii, 10 ppm for allyl isothiocynate against P. membranaefaciens and C. albican, and 10 ppm for allyl isothiocynate and oligosaccharide against P. anomala. No growth were observed for five kinds of yeasts in functional beverages containing sodium benzonate at concentration of 0.015% or higher. The resistance of S. cerevisiae, Z. bailii, and P. Anomala against natural antimicrobial agents was lower than those of P. membranaefaciens and C. albican. Allyl isothiocyanate, oligosaccharide, and sucrose-fatty acid ester showed the highest antimicrobial activities among the eight tested antimicrobials. These results can be applied to develop new natural antimicrobial agents to improve microbial quality of functional beverages.

본 연구는 당 함량이 높고 ($12{\pm}0.1%$) pH가 낮아($3.0{\pm}0.1$) 세균보다는 효모에 의한 변패가 문제시 되고 있은 가능성 음료의 저장성을 향상시키고자 주요 천연항균제 8종의 항균력을 평가하였다. 이에 따라 대표적인 효모균주 Saccharomyces cerevisiae, Zygosaccharomyces bailii, Pichia membranaefciens, Candida albicans, Pichia anomala 5종을 대상으로 $\varepsilon$-Polylysine, 유카추출물, vitamin $B_1$ derivative, scutellaria baicalensis extract, 키토올리고당, allyl Isothiocyanate, 자당지방산에스테르, 올리고당 등 8가지 주요 항균력을 test 하여 최소저해농도 (Minimal Inhibitory Concerntration, MIC)로 나타내었다. S. cerevisiae와 Z. bailii는 올리고당 용액 10 ppm, 자당지방산에스테르 10 ppm, P. membranaefaciens와 C. albicans는 allyl isothiocyanate 10 ppm, P. anomala는 Allyl isothiocyanate 10 ppm, 올리고당 용액 10 ppm 사용 시 가징 높은 항균력을 나타냈다. 0.015% 이상의 안식향산나트륨 참가 가능성 음료에서는 다섯 효모균 모두 증식이 관찰되지 않았다. 종합적으로 S. cerevisiae, Z. bailii, P. anomala의 저항성이 P. membranaefaciens, C. albicans 보다 낮았으며, 균주별 차이는 보였으나 allyl isothiocyanate, 올리고당, 자당지방산에스테르가 큰 항균력을 보였다. 본 연구결과는 기능성 음료의 합성 보존료를 대체할 수 있는 천연항균제의 개발 및 이용에 기초 자료로 활용될 수 있을 것이다.

Keywords

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