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Comparative pigment profiles of different Spirulina strains

Author(s): A. M. Saleh | D. W. Dhar | P. K. Singh

Journal: Research in Biotechnology
ISSN 2229-791X

Volume: 2;
Issue: 2;
Start page: 67;
Date: 2011;
Original page

Keywords: Spirulina | Phycobiliproteins | β- carotene

Spirulina platensis (SP) has diverse biological activity. Due to the high content ofhighly valuable proteins, indispensable amino acids, β-carotene, vitamins, and otherpigments, mineral substances, indispensable fatty acids and polysaccharides, it has beenfound suitable for use as bioactive additive. In the current study seven strains of Spirulinawere tested for its pigment profile. Phycobiliproteins are important accessory pigments inSpirulina. These consist of phycocyanin, (PC) allophycocyanin, (APC) and phycoerythrin,(PE). Highest PC and APC were recorded in Spirulina platensis (Sp7, mutant) followed by PCand APC contents recorded in its wild strain (Sp4). PC content in S. lonar (Sp6) and APC inSp5 and Sp6 recorded third ranking. Among the strains tested Sp 4 showed significantlyhighest amount of pigments when compared to others. Interaction studies indicated that Sp7showed highest PC content followed by its wild strain Sp4. The PC content in Sp2, Sp3 andSp6 assumed third ranking at 15th day of incubation. Interaction analysis based upon LSDranking showed the highest content was observed by the contents exhibited by Sp4 followedby Sp2, Sp3, Sp7, which was further followed by Sp5 at similar incubation time i.e. 25th day ofincubation. In β-carotene analysis Strains x days of incubation interaction studies weresignificant and the top ranked combinations were Sp4 at 15th day (295.6μg g-1 dry weight), 20thday (289.5μg g-1 dry weight) and at 25th day of incubation (282.4μg g-1 dry weight).
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