期刊
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
卷 109, 期 -, 页码 1012-1018出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ijbiomac.2017.11.084
关键词
Saccharophagus degradans; Polyhydroxyalkanoates; Gelidium amansii
资金
- National Research Foundation of Korea [NRF-2013R1A2A2A01067117, NRF-2017R1A2B4002371]
Noncompetitive carbon sources such as algae are unconventional and promising raw material for sustainable biofuel production. The capability of one marine bacterium, Saccharophagus degradans 2-40 to degrade red seaweed Gelidium amansii for production of polyhydroxyalkanoates (PHA) was evaluated in this study. S. degradans can readily attach to algae, degrade algal carbohydrates, and utilize that material as main carbon source. Minimal media containing 8 g/L G. amansii were used for the growth of S. degradans. The PHA content obtained was 17-27% of dry cell weight by pure culture of S. degradans and co-culture of S. degradans and Bacillus cereus, a contaminant found with S. degradans cultures. The PHA type was found to be poly(3-hydroxybutyrate) by gas chromatography and Fourier transform-infrared spectroscopy. This work demonstrates PHA production through consolidated bioprocessing of insoluble, untreated red algae by bacterial pure culture and co-culture. (C) 2017 Elsevier B.V. All rights reserved.
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