Original scientific paper

https://doi.org/10.31895/hcptbn.15.3-4.5

Photoheterotrophic cultivation of purple non-sulphur bacterium Rhodovulum adriaticum on the media with different carbon sources

Mario Novak orcid.org/0000-0002-9638-615X ; Faculty of Food Technology and Biotechnology, University of Zagreb, Zagreb, Croatia
Antonija Trontel orcid.org/0000-0003-2307-5585 ; Faculty of Food Technology and Biotechnology, University of Zagreb, Zagreb, Croatia
Nenad Marđetko orcid.org/0000-0002-3857-9818 ; Faculty of Food Technology and Biotechnology, University of Zagreb, Zagreb, Croatia
Veronika Matoković orcid.org/0000-0002-7324-4909 ; Faculty of Food Technology and Biotechnology, University of Zagreb, Zagreb, Croatia
Marko Sarić ; Faculty of Food Technology and Biotechnology, University of Zagreb, Zagreb, Croatia
Mladen Pavlečić ; Faculty of Food Technology and Biotechnology, University of Zagreb, Zagreb, Croatia
Božidar Šantek orcid.org/0000-0001-9583-534X ; Faculty of Food Technology and Biotechnology, University of Zagreb, Zagreb, Croatia

Abstract

Purple non-sulphur bacteria are interesting from ecologic and economic point of view in sustainable biotechnological production of biofuels, biochemicals, biopolymers and biomass as well as specific compounds such as carotenoids and pigments. In order to establish ecological and economic sustainable bioprocesses it is necessary to select adequate working microorganisms, raw materials and cultivation conditions. Development of bioprocesses on the renewable raw materials (e.g. lignocellulose containing feedstocks) are good example for such bioprocess types. In this research, the photoheterotrophic cultivation of purple non-sulfur bacteria Rhodovulum adriaticum DSM 2781 was studied on the liquid media containing glucose or /and xylose as a carbon sources in order to produce bacterial biomass and photosynthetic pigments. Results obtained in this study show that the highest values of bioprocess efficiency parameters (YX = 2,095 g L-1; YX/S = 0,54 g g-1i Pr = 0,022 g L-1h-1) related to the biomass production were observed during bacterial cultivation on media with 5 g L-1. Cultivation of R. adriaticum DSM 2781 on the media with 3 g L-1 glucose and xylose shows the highest total photosynthetic pigments content (13,27 mg g-1 biomass) together with satisfy other bioprocess efficiency parameters (YX = 1,507 g L-1; YX/S = 0,22 g g-1i Pr = 0,017 g L-1h-1).

Keywords

Rhodovulum adriaticum, cultivation medium, glucose, xylose, bacterial biomass, total photosynthetic pigments

Hrčak ID:

248399

URI

https://hrcak.srce.hr/248399

Publication date:

22.12.2020.

Article data in other languages: croatian

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