Abstract:
Microalgae contain various types of essential fatty acid that functional in enhancing
the growth and development of juvenile zooplankton. Three microalgae species had
been culture with controlled condition and the culture method was inoculated with f/2
medium. The growth of microalgae culture affects the composition and component of
fatty acid content. Fatty acid content in the analysis differs between microalgae
species and across the growth phases due to different in microalgae strains, culture
conditions and relative distribution at major lipid classes. The highest specific growth
rate was dominated by Dunaliella sp. followed by Rhodomonas sp. and Chlorella sp.
with 0.41 ind.d- 1
, 0.22 ind.d- 1 and 0.20 ind.d- 1 value respectively. On the other hand,
the highest cell density dominated by Chlorella sp. followed by Rhodomonas sp. and
Dunaliella sp. Among the three species studied, the highest fatty acid contents
dominated by Rhodomonas sp. where it displayed the highest total fatty acid contents
( l 075.578 pg celr 1 ) in early log (EL) phase followed with Dunaliella sp. and
Chiarella sp. In n-3 and n-6 fatty acids, Rhodomonas sp. also high in quantity across
phases except in late log (LL) phase where the phases dominated by Chlorella sp. The
fatty acids from polyunsaturated fatty acid (PUF A) division play main role in fatty
acid contents as the highest contributor to fatty acid contents were from PUF A. The
results obtained were significant in all microalgae species across four phases (p <
0.05).
