Journal article
Co-cultivation and stepwise cultivation of Chaetoceros muelleri and Amphora sp. for fucoxanthin production under gradual salinity increase
Journal of Applied Phycology, Vol.31(3), pp.1535-1544
2019
Abstract
In a seawater-based open pond microalgae cultivation system salinity will increase gradually over time due to evaporative loss. Continuous salinity increase would lead to non-optimal salinities which negatively affect the biomass and fucoxanthin productivity. To increase and maintain high overall biomass and fucoxanthin productivity, even in the non-optimal salinity zone, two cultivation methods for marine and halotolerant microalgae were carried out, co-cultivation and stepwise cultivation (sequential cultivation). Two fucoxanthin-producing diatoms, Chaetoceros muelleri (marine) and Amphora sp. (halotolerant), were cultivated at non-optimal salinities between 59 and 65‰. Stepwise cultivation showed approximately 63% higher total biomass and 47% higher fucoxanthin productivity than that of co-culture. The ability to reutilize culture media in the stepwise cultivation increases the sustainability of that method. The use of a stepwise culture regime, coupled with a regimen of gradually increasing salinity, provides the possibility of year round fucoxanthin production from microalgae.
Details
- Title
- Co-cultivation and stepwise cultivation of Chaetoceros muelleri and Amphora sp. for fucoxanthin production under gradual salinity increase
- Authors/Creators
- T. Ishika (Author/Creator) - Murdoch UniversityD.W. Laird (Author/Creator) - Murdoch UniversityP.A. Bahri (Author/Creator) - Murdoch UniversityN.R. Moheimani (Author/Creator) - Murdoch University
- Publication Details
- Journal of Applied Phycology, Vol.31(3), pp.1535-1544
- Publisher
- Springer Verlag
- Identifiers
- 991005544406707891
- Copyright
- © 2019 Springer Nature B.V.
- Murdoch Affiliation
- Algae R&D Centre; School of Engineering and Information Technology; School of Veterinary and Life Sciences
- Language
- English
- Resource Type
- Journal article
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- 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