Universität zu Köln

Kiperstok, Alice Costa, Sebestyen, Petra, Podola, Bjoern and Melkonian, Michael (2017). Biofilm cultivation of Haematococcus pluvialis enables a highly productive one-phase process for astaxanthin production using high light intensities. Algal Res., 21. S. 213 - 223. AMSTERDAM: ELSEVIER SCIENCE BV. ISSN 2211-9264

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Abstract

State-of-the-art commercial cultivation of Haematococcus pluvialis for astaxanthin production is exclusively based on two-phase processes, separating a vegetative green phase for cell multiplication from an astaxanthin producing red phase consisting of resting stages. We report the continuous co-production of H. pluvialis biomass and astaxanthin in a one-phase process at high light intensities. By means of a Twin-Layer biofilm photobioreactor, H. pluvialis was grown immobilized under illuminations up to 1015 mu mol photons m(-2) s(-1) and supplementary CO2 in the range of 1% to 10%, reaching a maximal dry biomass productivity of 19.4 gm(-2) day(-1) and a final standing crop of 213 gm(-2) growth area after 16 days of cultivation. During the cultivation period, astaxanthin productivity increased with increasing light intensity to values of 0.39 g m(-2) day(-1) and a final amount of 3.4 gm(-2), representing an astaxanthin content of about 2.5% in the dry biomass. Compared to a two-phase process using the same photobioreactor, the one-phase approach resulted in a similar total astaxanthin amount per growth area in half the cultivation period. As a one-phase process, it also simplifies cultivation of H. pluvialis compared to the established two phase suspension-based systems for astaxanthin production. (C) 2016 Elsevier B. V. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Kiperstok, Alice Costa UNSPECIFIED UNSPECIFIED UNSPECIFIED Sebestyen, Petra UNSPECIFIED UNSPECIFIED UNSPECIFIED Podola, Bjoern UNSPECIFIED UNSPECIFIED UNSPECIFIED Melkonian, Michael UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-247211
DOI:	10.1016/j.algal.2016.10.025
Journal or Publication Title:	Algal Res.
Volume:	21
Page Range:	S. 213 - 223
Date:	2017
Publisher:	ELSEVIER SCIENCE BV
Place of Publication:	AMSTERDAM
ISSN:	2211-9264
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language GREEN-ALGA; ATTACHED CULTIVATION; GROWTH; PHOTOBIOREACTOR; ACCUMULATION; MICROALGAE; WATER; SYSTEM; TEMPERATURE; IRRADIANCE Multiple languages Biotechnology & Applied Microbiology Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/24721