The Korean Journal of Mycology (한국균학회지)

The Korean Society of Mycology (한국균학회)
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Yeasts Diversity of Wild Flowers in Mountains of Korea and Their Physiological Functionalities

한국의 야생화에서 분리한 효모의 종 다양성과 생리기능성

  • Hyun, Se-Hee (Department of Biomedicinal Science and Biotechnology, Paichai University) ;
  • Han, Sang-Min (Department of Biomedicinal Science and Biotechnology, Paichai University) ;
  • Kim, Ha-Kun (Department of Biomedicinal Science and Biotechnology, Paichai University) ;
  • Lee, Jong-Soo (Department of Biomedicinal Science and Biotechnology, Paichai University)
  • 현세희 (배재대학교 바이오.의생명공학과) ;
  • 한상민 (배재대학교 바이오.의생명공학과) ;
  • 김하근 (배재대학교 바이오.의생명공학과) ;
  • 이종수 (배재대학교 바이오.의생명공학과)
  • Received : 2015.09.03
  • Accepted : 2015.09.12
  • Published : 2015.09.30
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Abstract

This study focused on isolation of wild yeasts from natural flowers and elucidation of yeast diversity. Wild yeasts were isolated from various flowers collected from mountains on the islands including Jejudo, Ulleungdo, Yokjido, and Seonyudo as well as inlands including Gyejoksan, Oseosan, Beakamsan, and Deogyusan in Korea. Isolated yeasts were identified by comparison of nucleotide sequences for polymerrase chain reaction-amplified D1/D2 region of 26S rDNA or internal transcribed spacer 1 and 2 including 5.8S rDNA using BLAST. 289 strains belonging to 134 yeast species were isolated. Cryptococcus genus strains were the most frequently isolated species among the identified yeasts. Metschnikowia reukaufii was also frequently isolated. Twenty three species including Cryptococcus aureus were overlapped between those of mountains on islands and inland. Physiological functionalities such as antioxidant activity, xanthine oxidase inhibitory activity, and tyrosinase inhibitory activity for the 289 identified yeast strains were investigated using their supernatant and cell-free extracts. The supernatants of Candida sp. 78-J-2 and Metschnikowia reukaufii SY44-6 showed antioxidant activity of 22.5%, and anti-gout xanthine oxidase inhibitory activity of 49.6%, respectively.

우리나라 야생화들의 효모 종 다양성을 확립하고 이들을 고부가가치의 건강산업에 응용하기 위한 자료를 얻고자 한국의 제주도, 울릉도, 욕지도와 선유도 등 4개의 섬지역 산들과 계족산, 오서산, 백암산과 덕유산 등 4개의 내륙지역 산에서 개화한 야생화들을 2012년에서 2014년 사이에 수집하여 효모 134종 289균주를 분리 동정하였다. 분리한 289균주 중에서 Cryptococcus속 균주들이 가장 많이 분리되었고 Cryptococcus aureus를 포함하는 23균주들이 섬과 내륙 산지역에서 공통적으로 분리 동정되었다. 또한 단일 균주로는 Metschnikowia reukaufii가 전체 균주 중 10.3%인 30균주로 가장 많이 분리되었다. 분리한 균주들을 yeast peptone dextrose (YPD) 배지에서 24시간 배양하여 각각의 배양상등액과 무세포추출물을 제조한 후 이들의 주요 생리기능성을 측정한 결과, Candida sp. 78-J-2의 배양상등액이 22.5%의 항산화활성, Metschnikowia reukaufii SY44-6의 배양상등액이 49.6%의 항통풍성 xanthine oxidase 저해활성과 38.4%의 미백성 tyrosinase 저해활성을 보였다.

Keywords

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