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Long-term reliable culture of a halophilic diatom, Amphora sp. MUR258, in outdoor raceway ponds
Journal article   Peer reviewed

Long-term reliable culture of a halophilic diatom, Amphora sp. MUR258, in outdoor raceway ponds

I. Indrayani, N.R. Moheimani and M.A. Borowitzka
Journal of Applied Phycology, Vol.31(5), pp.2771-2778
2019
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Abstract

The microalgal industry as a source of high-value products (i.e. β-carotene, astaxanthin) was established over 50 years ago. However, only a very small number of species have been commercialised. There is a need for new species and new products to expand this industry. The objective of this study was to examine the reliability and productivities of long-term outdoor culture of a newly isolated halophilic diatom, Amphora sp. MUR258 (Bacillariophyceae), in raceway ponds in Perth, Western Australia. The Amphora sp. was grown in outdoor raceway ponds as a semi-continuous culture for about 13 months at a culture salinity between 8.6 and 14.9% (w/v) NaCl. The highest cell density (167 × 104 cells mL−1), specific growth rate (0.29 day−1) and biomass and lipid productivities (24 and 6.8 g m−2 day−1, respectively) were achieved in summer. The annual average of biomass (ash-free dry weight) and lipid productivities was 7 and 2.2 g AFDW m−2 day−1, respectively. Minor contamination by a Navicula sp. was seen during winter, but was not a significant problem. No major protozoan contamination was seen. These results indicate the potential of reliable large-scale cultivation of Amphora sp. MUR258 as a potential source of diatom lipid and/or fucoxanthin.

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Collaboration types
Domestic collaboration
International collaboration
Citation topics
3 Agriculture, Environment & Ecology
3.171 Photoproductivity
3.171.477 Microalgae Biotechnology
Web Of Science research areas
Biotechnology & Applied Microbiology
Marine & Freshwater Biology
ESI research areas
Plant & Animal Science
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