Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Structure and Characteristics of Biodegradable Polyester from Actinobacillus sp. EL-9

Actinobacillus sp. EL-9로부터 생산된 생분해성 폴리에스터의 구조 및 특성

  • Son, Hong-Ju (Department of Biotechnolgy, Miryang National University) ;
  • Lee, Gun (Department of Microbiology, Pusan National University) ;
  • Kim, Geun-Ki (Department of Biotechnolgy, Miryang National University) ;
  • Kim, Han-Soo (Department of Biotechnolgy, Miryang National University) ;
  • Kim, Yong-Kyun (Department of Biotechnolgy, Miryang National University) ;
  • Lee, Sang-Jun (Department of Microbiology, Pusan National University)
  • 손홍주 (밀양대학교 생물공학과) ;
  • 이건 (부산대학교 미생물학과) ;
  • 김근기 (밀양대학교 생물공학과) ;
  • 김한수 (밀양대학교 생물공학과) ;
  • 김용균 (밀양대학교 생물공학과) ;
  • 이상준 (부산대학교 미생물학과)
  • Published : 1998.10.01
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Abstract

In this study, the composition and characteristics of poly-$\beta$-hydroxybutyrate (PHB) biosynthesized by Actinobacillus sp. EL-9 are investigated. PHB produced by Actinobacillus sp. EL-9 was identified as the homopolymer of 3-hydroxy-butyric acid (PHB) by infrared spectroscopy and nuclear magnetic resonance spectroscopy analysis. The melting tem-perature (T$_{m}$), and crystallization temperature(T$_{c}$) of PHB was 169.7$^{\circ}C$ and 69.13$^{\circ}C$, respectively. The viscosity on he basis of Brookfield viscometer was 6.01 ㎗/g. The viscosity-average molecular weight estimated by Mark-Ho-wink-Sakurada equation was 1.08$\times$10$^{6}$ ($\pm$3,000).00).

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