Title |
Blue-Red LED wavelength shifting strategy for enhancing beta-carotene production from halotolerant microalga, Dunaliella salina |
Author |
Sang-Il Han1, Sok Kim1, Changsu Lee2, and Yoon-E Choi1* |
Address |
1Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea, 2Microbiology and Functionality Research Group, World Institute of Kimchi, Gwangju 61755, Republic of Korea |
Bibliography |
Journal of Microbiology, 57(2),101–106, 2019,
|
DOI |
10.1007/s12275-019-8420-4
|
Key Words |
Dunaliella salina, beta-carotene, light-emitting
diode, wavelength shift, adaptive laboratory evolution |
Abstract |
In the present study, to improve the photosynthetic betacarotene
productivity of Dunaliella salina, a blue-red LED
wavelength-shifting system (B-R system) was investigated.
Dunaliella salina under the B-R system showed enhanced
density and beta-carotene productivity compared to D. salina
cultivated under single light-emitting diode light wavelengths
(blue, white, and red light-emitting diode). Additionally, we
developed blue light-adapted D. salina (ALE-D. salina) using
an adaptive laboratory evolution (ALE) approach. In combination
with the B-R system applied to ALE-D. salina (ALE
B-R system), the beta-carotene concentration (33.94 ± 0.52
μM) was enhanced by 19.7% compared to that observed for
the non-ALE-treated wild-type of D. salina (intact D. salina)
under the B-R system (28.34 ± 0.24 μM). |