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Open AccessArticle

Biodegradable and Biocompatible Biomaterial, Polyhydroxybutyrate, Produced by an Indigenous Vibrio sp. BM-1 Isolated from Marine Environment

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Graduate School of Biotechnology and Bioengineering, Yuan Ze University, Chung-Li, Taoyuan 320, Taiwan
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Department of Chemical Engineering and Material Science, Yuan Ze University, Chung-Li, Taoyuan 320, Taiwan
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Author to whom correspondence should be addressed.
Mar. Drugs 2011, 9(4), 615-624; https://doi.org/10.3390/md9040615
Received: 8 March 2011 / Revised: 31 March 2011 / Accepted: 12 April 2011 / Published: 18 April 2011
(This article belongs to the Special Issue Marine Biomaterials)
Polyhydroxybutyrate (PHB) is one of the polyhydroxyalkanoates (PHAs) which has biodegradable and biocompatible properties. They are adopted in the biomedical field, in, for example, medical implants and drug delivery carriers. This study seeks to promote the production of PHB by Vibrio sp. BM-1, isolated from a marine environment by improving constituents of medium and implementing an appropriate fermentation strategy. This study successfully developed a glycerol-yeast extract-tryptone (GYT) medium that can facilitate the growth of Vibrio sp. BM-1 and lead to the production of 1.4 g/L PHB at 20 h cultivation. This study also shows that 1.57 g/L PHB concentration and 16% PHB content were achieved, respectively, when Vibrio sp. BM-1 was cultivated with MS-GYT medium (mineral salts-supplemented GYT medium) for 12 h. Both cell dry weight (CDW) and residual CDW remained constant at around 8.2 g/L and 8.0 g/L after the 12 h of cultivation, until the end of the experiment. However, both 16% of PHB content and 1.57 g/L of PHB production decreased rapidly to 3% and 0.25 g/L, respectively from 12 h of cultivation to 40 h of cultivation. The results suggest that the secretion of PHB depolymerase that might be caused by the addition of mineral salts reduced PHB after 12 h of cultivation. However, work will be done to explain the effect of adding mineral salts on the production of PHB by Vibrio sp. BM-1 in the near future. View Full-Text
Keywords: polyhydroxybutyrate; biomaterial; marine microorganisms; Vibrio sp. BM-1 polyhydroxybutyrate; biomaterial; marine microorganisms; Vibrio sp. BM-1
MDPI and ACS Style

Wei, Y.-H.; Chen, W.-C.; Wu, H.-S.; Janarthanan, O.-M. Biodegradable and Biocompatible Biomaterial, Polyhydroxybutyrate, Produced by an Indigenous Vibrio sp. BM-1 Isolated from Marine Environment. Mar. Drugs 2011, 9, 615-624.

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