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Fig. 4 | Microbial Cell Factories

Fig. 4

From: Combined artificial high-silicate medium and LED illumination promote carotenoid accumulation in the marine diatom Phaeodactylum tricornutum

Fig. 4

Changes of fucoxanthin and other major pigments in P. tricornutum under LED illumination after doubling light intensities. Because light energy differs in different wavelengths, the pure red light with a light intensity of 128 μmol/m2/s is approximately equal to the combined red and blue (50:50) light with a light intensity of 102 μmol/m2/s in terms of light energy. To setup same supplied light energy as a baseline, different light intensities were used for two different light qualities. Red LED conditions: light intensity was increased to 255 from 128 μmol/m2/s. Red-blue (50:50) LED conditions: light intensity was increased to 204 from 102 μmol/m2/s. Due to the The pigment contents in cells under illumination of lower light intensities were set as references (100%), respectively. The dashed line indicates the baseline of 100%. The results presented are average values from three independent experiments. Error bars indicate SE. Asterisk (*) represents statistically significant difference of the pigment content between its lower light condition and doubled light condition. NS represents no statistically significant difference between its low light condition and high (doubled) light condition

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