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논문 기본 정보

자료유형
학술저널
저자정보
Kim Jin Sun (Department of Pharmaceutical Engineering, Silla University, Busan 46958, Republic of Korea) Woo Young Min (Department of Bioscience, Graduate School, Silla University, Busan 46958, Republic of Korea) Lee Dong-Geun (Department of Pharmaceutical Engineering, Silla University, Busan 46958, Republic of KoreaDepartment of Bioscience, Graduate School, Silla University, Busan 46958, Republic of Korea) Kim Andre (Department of Pharmaceutical Engineering, Silla University, Busan 46958, Republic of KoreaDepartment of Bioscience, Graduate School, Silla University, Busan 46958, Republic of Korea) Lee Sang-Hyeon (Department of Pharmaceutical Engineering, Silla University, Busan 46958, Republic of KoreaDepartment of Bioscience, Graduate School, Silla University, Busan 46958, Republic of Korea)
저널정보
한국미생물생명공학회 한국미생물·생명공학회지 한국미생물·생명공학회지 제52권 제2호
발행연도
2024.6
수록면
135 - 140 (6page)
DOI
10.48022/mbl.2403.03012

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초록· 키워드

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This study reports the isolation of a bacterium capable of degrading agar and the characterization of its agarase. An agar-degrading marine bacterium JS-1 was isolated using Marine agar 2216 media from seawater collected from the seashore of Angolpo, Changwon, Gyeongnam Province, Republic of Korea. An agardegrading bacterium was named as Tenacibaculum sp. JS-1 by phylogenetic analysis based on 16S rRNA gene sequence. The extracellular crude agarase was prepared from the culture media of Tenacibaculum sp. JS-1 and used for characterization. Relative activities at 20, 30, 40, 50, and 60℃ were 39, 73, 100, 74, and 53%, respectively. Relative activities at pH 5, 6, 7, and 8 were 46%, 67%, 100%, and 49%, respectively. Its extracellular agarase showed maximum activity (164 U/l) at pH 7.0 and 40℃ in a 20 mM GTA buffer. The residual activities after heat treatment at 20, 30, and 50℃ for 30 min were 84, 73, and 26% or more, respectively. After 2 h heat treatment at 20, 30, 40, and 50℃, the residual activities were 80, 64, 52 and 21%, respectively. Thin layer chromatography analysis suggested that Tenacibaculum sp. JS-1 produces extracellular β-agarases that hydrolyze agarose to produce neoagarooligosaccharides, including neoagarohexaose (12.3%), neoagarotetraose (65.1%), and neoagarobiose (22.6%) at 6 h. Tenacibaculum sp. JS-1 and its β-agarase could be valuable for producing neoagarooligosaccharides with a variety of functional properties. These properties include inhibiting bacterial growth, slowing down starch degradation, and whitening, which are of interest for pharmaceuticals, food, cosmeceuticals, and nutraceuticals.

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