Universität zu Köln

Carbone, Dora Allegra, Olivieri, Giuseppe, Pollio, Antonino and Melkonian, Michael (2020). Biomass and phycobiliprotein production of Galdieria sulphuraria, immobilized on a twin-layer porous substrate photobioreactor. Appl. Microbiol. Biotechnol., 104 (7). S. 3109 - 3120. NEW YORK: SPRINGER. ISSN 1432-0614

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Abstract

The extremophile red alga Galdieria sulphuraria was successfully grown immobilized in a twin-layer porous substrate bioreactor (TL-PSBR). A maximal biomass growth rate of 10 g dry weight m(-2) day(-1) was measured at a photon fluence rate of 200 mu mol photons m(-2) s(-1) with addition of 1% CO2 and a temperature of 34 degrees C. Under these conditions, a maximal biomass value of 232 g m(-2) was attained after 33 days of growth. Phycobilin productivity, however, was highest at a lower photon fluence rate of 100 mu mol photons m(-2) s(-1) and reached a phycobilin value of 14 g m(-2), a phycobilin content in the biomass of 63 mg g(-1) and a phycobilin growth rate of 0.28 g m(-2) day(-1) for phycocyanin and 0.23 g m(-2) day(-1) for allophycocyanin. Addition of CO2 was essential to enhance growth and phycobilin production in G. sulphuraria and further optimization of the cultivation process in the TL-PSBR appears possible using a multi-phase approach, higher growth temperatures and optimization of nutrient supply. It is concluded that autotrophic cultivation of G. sulphuraria in a TL-PSBR is an attractive alternative to suspension cultivation for phycobilin production and applications in bioremediation.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Carbone, Dora Allegra UNSPECIFIED UNSPECIFIED UNSPECIFIED Olivieri, Giuseppe UNSPECIFIED UNSPECIFIED UNSPECIFIED Pollio, Antonino UNSPECIFIED UNSPECIFIED UNSPECIFIED Melkonian, Michael UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-344824
DOI:	10.1007/s00253-020-10383-8
Journal or Publication Title:	Appl. Microbiol. Biotechnol.
Volume:	104
Number:	7
Page Range:	S. 3109 - 3120
Date:	2020
Publisher:	SPRINGER
Place of Publication:	NEW YORK
ISSN:	1432-0614
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SULFOTHERMOPHILIC RED ALGA; DENSITY FED-BATCH; C-PHYCOCYANIN; SPIRULINA-PLATENSIS; WASTE-WATER; SCENEDESMUS-VACUOLATUS; ARTHROSPIRA SPIRULINA; HIGH LIGHT; MICROALGAE; GROWTH Multiple languages Biotechnology & Applied Microbiology Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/34482