| Title | Guyparkeria halophila: Novel cell platform for the efficient valorization of carbon dioxide and thiosulfate into ectoine |
|---|---|
| ID_Doc | 7767 |
| Authors | Huang-Lin, E; Tamarit, D; Lebrero, R; Cantera, S |
| Title | Guyparkeria halophila: Novel cell platform for the efficient valorization of carbon dioxide and thiosulfate into ectoine |
| Year | 2024 |
| Published | |
| Abstract | Utilizing carbon dioxide (CO2) for valuable chemical production is key to a circular economy. Current processes are costly due to limited microorganism use, low-value products, and the need for affordable energy. This study addresses these challenges by using industrial contaminants like thiosulfate (S2O32-) for CO2 conversion into ectoines. Ectoines, are important ingredients as pharmaceuticals and cosmetics. Here, six microbial genomes were identified as potential candidates to valorize CO2 and S2O32- into ectoine. After laboratory validation at 3 % NaCl, the fastest-growing strain, Guyparkeria halophila, was optimized at 6 %, 9 %, and 15 % NaCl, showing the highest specific ectoine contents (mg(Ect) g(biomass)(-1)) at 15 %. Batch bioreactors, combining optimal conditions, achieved maximum specific ectoine contents of 47 %. These results not only constitute the highest ectoine content so far reported by autotrophs and most of heterotrophs, but also the first proof of a novel valorization platform for CO2 and S2O32-, focused on pharmaceuticals production. |
| https://doi.org/10.1016/j.biortech.2024.131152 |
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