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Figure 4 | Biotechnology for Biofuels

Figure 4

From: Automated nutrient screening system enables high-throughput optimisation of microalgae production conditions

Figure 4

Main and Interaction Effects analysis. (a) Summary plot of the Main Effects p value analysis for M. convolutum (9-FW) exhibiting significant nutrient effects on microalgae growth rates (h−1). (b) Radial plot showing the number of microalgae strains of the eight tested that exhibited significant Main Effects p value for specific elements. Three strains exhibited significant Main Effects p value for calcium, two strains exhibited significant Main Effects p value for magnesium. Overall, calcium, magnesium, iron, zinc and manganese were found to be significant and require modulation for improved growth to be achieved. (c) Venn diagram showing pairwise interactions identifying a number of potential species/nutrient mix specific effects (for example, Mg-Zn in M. convolutum (9_FW)) or interactions common to more than one species (for example, Ca-Mg for P. falcate and M. reisseri).

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