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KMID : 0545120030130040632
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Journal of Microbiology and Biotechnology
2003 Volume.13 No. 4 p.632 ~ p.635
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Biosynthesis of Novel Poly(3-hydroxyalkanoates) Containing Alkoxy Groups by Pseudomonas oleovorans
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KIM, DO YOUNG
NAM, JIN SIK/RHEE, YOUNG HA/KIM, YOUNG BAEK
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Abstract
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Novel poly(3-hydroxyalkanoates), PHAs, having either methoxy or ethoxy groups as the terminal hydrophilic moieties, were biosynthesized hy Pseudumonas oleovorans grown either solely with 11-alkoxyundecanoic acid or 8-alkoxyoctanoic acid, or grown with a mixture of 6-alkoxyhexanoic acid and nonanoicacid. The PHA synthesized from I 1-methoxyundecanoic acid consisted of 88 mol% 3-hydroxy-7-methoxyheptanoate and 12 mol% 3-hydroxy-9-methoxynonanoate. However, the PHA produced from 11-ethoxyndecanoic acid consisted of 56 mol% 3-hydmxy-5-ethoxypentanoate and 44 mol% 3-hydroxy-7-ethoxyheptanodte. The high solubility of the PHAs in methanol and ethanol indicated that the alkoxy groups in the side chains resulted in the formation of PHAs with an enhanced hydmphilicity.
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