Abstract:
The effect of the kinetin on growth and fatty acid composition of Ch/orella sp. (UMTMl
) were conducted. Three different concentrations used were 0.7, 1.4 and 2.8 mg/1
kinetin. The microalgae cultured at 25°C and 24h of l SOμmol photon m-2 s- 1 for light
illustration. The growth of the Ch/orella sp. in the medium treated with kinetin was
observed. The 1.4 mg/1 of kinetin recorded the highest number of cells, 1.86 ± 0.08
(x107 cells/ml), after 42 days of cultivation in aeration condition, while the control
show the lowest number of cells which was 1.31 ± 0.07 (x107 cells/ml). The total oil
content was increased accordingly as the concentration of kinetin increased. The total
saturated fatty acid (SF As) was decreased as the concentration of kinetin increased,
while both mono-unsaturated (MUFAs) and polyurisaturated fatty acid (PUFAs) were
increased accordingly. The major selected fatty acid was found in Chlorella sp. treated
with kinetin were C16:0, C16:1, C17:0, C18:0, C18:1, C18:2, C18:3n3 and C20:0.
Thus, it was concluded that kinetin can enhanced the growth of the Chlorella sp but
has no significant different between fatty acid composition. Further studies must carry
out to determine how biochemical stimulatant affects the fatty acid biosynthesis.
