E3S Web Conf.
Volume 234, 2021The International Conference on Innovation, Modern Applied Science & Environmental Studies (ICIES2020)
|Number of page(s)||5|
|Published online||02 February 2021|
Medium optimization for exopolysaccharides production by Bacillus Zhangzhouensis BZ 16 strain isolated from Khnifiss Lagoon
1 University Ibn Zohr, Faculty of sciences, Department of Biology, Laboratory of AQUAMAR, Agadir, Morocco
2 University Abdelamalek Essadi, Faculty of Sciences, Tetouan, Morocco
3 The Specialized Center of Valorization and Technology of Marine Products (CSVTPM), National Marine Research Institute (INRH), Laboratory quality control, Agadir, Morocco
* Corresponding author: firstname.lastname@example.org
The increased demand for natural polymers for diverse industrial applications in last years has led to a renovated interest in exopolysaccharides (EPS) production by microorganisms. Ecological roles of EPS especially for those isolated from extreme habitats such as hypersaline ponds have been reported in several studies. A moderate halophilic strain producing exopolysaccharide (EPS) has been isolated earlier. However, the EPS production of the strain (2 g/L) was relatively low to exploit it at the industrial level. In the present work, the strain was identified as Bacillus zhangzhouensis and named as BZ 16 and the optimal medium was studied to boost the EPS production. Maximum EPS production was obtained in medium with 125 g/L sucrose, 30 g/L yeast extract. Phosphate source inhibited EPS production even if it increased the growth. Under optimal medium composition, EPS was produced at 12.37 g/L, which was 6 times greater than the production yield achievable without optimizing conditions.
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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