Fig. 7
From: Biotechnological response curve of the cyanobacterium Spirulina subsalsa to light energy gradient
Bi-plot of the Principal Component Analysis (PCA). The axes 1 and 2 explained 53% and 27% of the total variance, respectively. The PCA was performed on the variance–covariance matrix including the photosynthetic/photo-acclimation properties, macromolecular composition, bioactive compounds and antioxidant capacities of Spirulina subsala grown under the five light conditions