TY - JOUR
T1 - Continuous selenite biotransformation and biofuel production by marine diatom in the presence of fulvic acid
AU - Xu, Hui-Ying
AU - Li, Ruo-Yu
AU - Yang, Zi-Qiang
AU - Qiu, Jia-Fan
AU - Su, Yu-Bin
AU - Lin, Carol Sze Ki
AU - Yang, Wei-Dong
AU - Li, Hong-Ye
AU - Zheng, Jian-Wei
AU - Wang, Xiang
PY - 2024/6
Y1 - 2024/6
N2 - In this study, the biochemical response of Phaeodactylum tricornutum to varying concentrations of inorganic selenium (Se) was investigated. It was observed that, when combined with fulvic acid, P. tricornutum exhibited enhanced uptake and biotransformation of inorganic Se, as well as increased microalgal lipid biosynthesis. Notably, when subjected to moderate (5 and 10 mg/L) and high (20 and 40 mg/L) concentrations of selenite under fulvic acid treatment, there was a discernible redirection of carbon flux towards lipogenesis and protein biosynthesis from carbohydrates. In addition, the key parameters of microalgae-based biofuels aligned with the necessary criteria outlined in biofuel regulations. Furthermore, the Se removal capabilities of P. tricornutum, assisted by fulvic acid, were coupled with the accumulation of substantial amounts of organic Se, specifically SeCys. These findings present a viable and successful approach to establish a microalgae-based system for Se uptake and biotransformation. © 2024 Elsevier Ltd
AB - In this study, the biochemical response of Phaeodactylum tricornutum to varying concentrations of inorganic selenium (Se) was investigated. It was observed that, when combined with fulvic acid, P. tricornutum exhibited enhanced uptake and biotransformation of inorganic Se, as well as increased microalgal lipid biosynthesis. Notably, when subjected to moderate (5 and 10 mg/L) and high (20 and 40 mg/L) concentrations of selenite under fulvic acid treatment, there was a discernible redirection of carbon flux towards lipogenesis and protein biosynthesis from carbohydrates. In addition, the key parameters of microalgae-based biofuels aligned with the necessary criteria outlined in biofuel regulations. Furthermore, the Se removal capabilities of P. tricornutum, assisted by fulvic acid, were coupled with the accumulation of substantial amounts of organic Se, specifically SeCys. These findings present a viable and successful approach to establish a microalgae-based system for Se uptake and biotransformation. © 2024 Elsevier Ltd
KW - Antioxidant compound
KW - Biochemical response
KW - Lipid
KW - Phaeodactylum tricornutum
KW - Se removal
UR - http://www.scopus.com/inward/record.url?scp=85190807324&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85190807324&origin=recordpage
U2 - 10.1016/j.biortech.2024.130708
DO - 10.1016/j.biortech.2024.130708
M3 - RGC 21 - Publication in refereed journal
C2 - 38636878
SN - 0960-8524
VL - 401
JO - Bioresource Technology
JF - Bioresource Technology
M1 - 130708
ER -
