Biomass production and biochemical variability of the marine microalga Isochrysis galbana in relation to culture medium.
نویسندگان
چکیده
We have studied the autotrophic growth of the marine microalga, Isochrysis galbana Parke, in a batch photobioreactor, comparing five different culture media and analysing the influence of each on growth kinetics as well as on the fatty-acid composition and protein content of the biomass. All the experiments were performed at 15 degrees C, with the culture medium at pH 8.0, a specific rate of air supply of 1vv(-1)min(-1) and a continuous illumination of 40-43Wm(-2). The results show no parallel between good nutritional characteristics and high values of the kinetic parameters. Nevertheless, a compromise between the nutritional factors and growth kinetics could be provided by Ukeles medium, which provided a biomass with a good composition in polyunsaturated fatty acids (quotient n3/n6=3.2), an adequate protein content (25.3%) and relatively high values, although not the highest registered, for maximum specific growth rate (µ(m)=0.018h(-1)) and biomass productivity (1.9x10(-3)kgm(-3)h(-1)).
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ورودعنوان ژورنال:
- Biochemical engineering journal
دوره 6 1 شماره
صفحات -
تاریخ انتشار 2000