TY - JOUR
T1 - Continuous microalgal cultivation for antioxidants production
AU - López-Hernández, Jenny Fabiola
AU - García-Alamilla, Pedro
AU - Palma-Ramírez, Diana
AU - Álvarez-González, Carlos Alfonso
AU - Paredes-Rojas, Juan Carlos
AU - Márquez-Rocha, Facundo J.
N1 - Publisher Copyright:
© 2020 by the authors.
PY - 2020/9
Y1 - 2020/9
N2 - Microalgae, including cyanobacteria, represent a valuable source of natural compounds that have remarkable bioactive properties. Each microalga species produces a mixture of antioxidants with different amounts of each compound. Three aspects are important in the production of bioactive compounds: the microalga species, the medium composition including light supplied and the photobioreactor design, and operation characteristics. In this study, the antioxidant content and productivity performance of four microalgae were assessed in batch and continuous cultures. Biomass productivity by the four microalgae was substantially enhanced under continuous cultivation by 5.9 to 6.3 times in comparison with batch cultures. The energetic yield, under the experimental conditions studied, ranged from 0.03 to 0.041 g biomass kJ−1. Phenols, terpenoids, and alkaloids were produced by Spirulina platensis, Isochrysis galbana, and Tetraselmis suecica, whereas tocopherols and carotenoids were produced by the four microalgae, except for phycocyanin and allophycocyanin, which were only produced by S. platensis and Porphyridium cruentum. The findings demonstrate that the continuous cultivation of microalgae in photobioreactors is a convenient method of efficiently producing antioxidants.
AB - Microalgae, including cyanobacteria, represent a valuable source of natural compounds that have remarkable bioactive properties. Each microalga species produces a mixture of antioxidants with different amounts of each compound. Three aspects are important in the production of bioactive compounds: the microalga species, the medium composition including light supplied and the photobioreactor design, and operation characteristics. In this study, the antioxidant content and productivity performance of four microalgae were assessed in batch and continuous cultures. Biomass productivity by the four microalgae was substantially enhanced under continuous cultivation by 5.9 to 6.3 times in comparison with batch cultures. The energetic yield, under the experimental conditions studied, ranged from 0.03 to 0.041 g biomass kJ−1. Phenols, terpenoids, and alkaloids were produced by Spirulina platensis, Isochrysis galbana, and Tetraselmis suecica, whereas tocopherols and carotenoids were produced by the four microalgae, except for phycocyanin and allophycocyanin, which were only produced by S. platensis and Porphyridium cruentum. The findings demonstrate that the continuous cultivation of microalgae in photobioreactors is a convenient method of efficiently producing antioxidants.
KW - Antioxidants
KW - Continuous cultivation
KW - Microalgae
KW - Phenols
KW - Phycocyanin
KW - Tocopherols
UR - http://www.scopus.com/inward/record.url?scp=85090851649&partnerID=8YFLogxK
U2 - 10.3390/molecules25184171
DO - 10.3390/molecules25184171
M3 - Artículo
C2 - 32933083
AN - SCOPUS:85090851649
SN - 1420-3049
VL - 25
JO - Molecules
JF - Molecules
IS - 18
M1 - 4171
ER -