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Fig. 4 | Biotechnology for Biofuels

Fig. 4

From: Application of an in situ CO2–bicarbonate system under nitrogen depletion to improve photosynthetic biomass and starch production and regulate amylose accumulation in a marine green microalga Tetraselmis subcordiformis

Fig. 4

Nitrate consumption (a), biomass production (dry weight, b), photosynthetic activity (\(F_{\text{v}} /F_{\text{m}}\), c), pH variations (d), starch content (e) and starch concentration (f) of T. subcordiformis cultures with different amounts of NaHCO3 addition (0, 0.2, 1 and 5 g L−1) under nitrogen limitation (mean ± SD, n = 3)

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