title: Growth and biopigment accumulation of cyanobacterium Spirulina platensis at different light intensities and temperature.
abstract: In order to find out optimum culture condition for algal growth, the effect of light irradiance and temperature on growth rate, biomass composition and pigment production of Spirulina platensis were studied in axenic batch cultures. Growth kinetics of cultures showed a wide range of temperature tolerance from 20 °C to 40 °C. Maximum growth rate, cell production with maximum accumulation of chlorophyll and phycobilliproteins were found at temperature 35 °C and 2,000 lux light intensity. But with further increase in temperature and light intensity, reduction in growth rate was observed. Carotenoid content was found maximum at 3,500 lux. Improvement in the carotenoid content with increase in light intensity is an adaptive mechanism of cyanobacterium S.platensis for photoprotection, could be a good basis for the exploitation of microalgae as a source of biopigments.
authors.affiliation: Department of Botany, University of Rajasthan , Jaipur 302004 , INDIA.
authors.forename: Manoj
authors.initials: M
authors.lastname: Kumar
authors.forename: Jyoti
authors.initials: J
authors.lastname: Kulshreshtha
authors.forename: Gajendra Pal
authors.initials: GP
authors.lastname: Singh
keywords: Carotenoid; Chlorophyll a; Growth kinetics; Spirulina platensis; and Phycobiliproteins
references.citation: Appl Microbiol Biotechnol. 2004 Nov;65(6):635-48
references.pmid: 15300417
references.citation: Arch Microbiol. 1998 Jan;169(1):10-9
references.pmid: 9396830
references.citation: Braz J Microbiol. 2008 Jan;39(1):98-101
references.pmid: 24031187
references.citation: Braz J Microbiol. 2008 Oct;39(4):693-7
references.pmid: 24031291
references.citation: J Bacteriol. 1993 Feb;175(3):575-82
references.pmid: 8423132
references.citation: Bioresour Technol. 2001 Mar;77(1):19-24
references.pmid: 11211071
references.citation: Biotechnol Prog. 2003 Jul-Aug;19(4):1128-35
references.pmid: 12892472
references.citation: Biochemistry. 1971 Sep 14;10(19):3625-34
references.pmid: 5004410
references.citation: Annu Rev Microbiol. 1985;39:503-26
references.pmid: 3933408