1
|
da Costa MVA, Sousa ACR, Batista AG, Paula FEGM, Cardozo MV, Vargas SR, Philippini RR, Bragança CRS. Innovative pathways for ethanol production: Harnessing xylose's bioenergy potential using Brazilian wild isolated yeasts. BIORESOURCE TECHNOLOGY 2024; 404:130930. [PMID: 38838833 DOI: 10.1016/j.biortech.2024.130930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 05/29/2024] [Accepted: 06/02/2024] [Indexed: 06/07/2024]
Affiliation(s)
- Marcus Vinicius Astolfo da Costa
- Laboratory of Microorganism Physiology, Department of Biomedical Sciences and Health, UEMG, Rua Sabará, 164, Centro, CEP: 37900-004, Passos, MG, Brazil
| | - Ana Carolina Rodrigues Sousa
- Laboratory of Microorganism Physiology, Department of Biomedical Sciences and Health, UEMG, Rua Sabará, 164, Centro, CEP: 37900-004, Passos, MG, Brazil
| | - Arthur Gasseta Batista
- Laboratory of Microorganism Physiology, Department of Biomedical Sciences and Health, UEMG, Rua Sabará, 164, Centro, CEP: 37900-004, Passos, MG, Brazil
| | - Fernanda Elisa Gomes Miranda Paula
- Laboratory of Microorganism Physiology, Department of Biomedical Sciences and Health, UEMG, Rua Sabará, 164, Centro, CEP: 37900-004, Passos, MG, Brazil
| | - Marita Vedovelli Cardozo
- Laboratory of Microorganism Physiology, Department of Biomedical Sciences and Health, UEMG, Rua Sabará, 164, Centro, CEP: 37900-004, Passos, MG, Brazil
| | - Sarah Regina Vargas
- Laboratory of Applied Biotechnology, Department of Biomedical Sciences and Health, UEMG, Rua Sabará, 164, Centro, CEP: 37900-004, Passos, MG, Brazil
| | | | - Caio Roberto Soares Bragança
- Laboratory of Microorganism Physiology, Department of Biomedical Sciences and Health, UEMG, Rua Sabará, 164, Centro, CEP: 37900-004, Passos, MG, Brazil.
| |
Collapse
|
2
|
Palladino F, Rodrigues RCLB, da Silva SP, Rosa CA. Strategy to reduce acetic acid in sugarcane bagasse hemicellulose hydrolysate concomitantly with xylitol production by the promising yeast Cyberlindnera xylosilytica in a bioreactor. Biotechnol Lett 2023; 45:263-272. [PMID: 36586052 DOI: 10.1007/s10529-022-03337-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 11/26/2022] [Accepted: 12/06/2022] [Indexed: 01/01/2023]
Abstract
The yeast Cyberlindnera xylosilytica UFMG-CM-Y309 has been identified as a promising new xylitol producer from sugarcane bagasse hemicellulosic hydrolysate (SCHH). However, SCHH pretreatment process generates byproducts, which are toxic to cell metabolism, including furans, phenolic compounds, and carboxylic acids, such as acetic acid, typically released at high concentrations. This research aims to reduce acetic acid in sugarcane hemicellulose hydrolysate concomitantly with xylitol production by yeast strain Cy. xylosilytica UFMG-CM-Y309 in a bioreactor by strategically evaluating the influence of volumetric oxygen transfer coefficient (kLa) (21 and 35 h-1). Experiments were conducted on a bench bioreactor (2 L volumetric capacity) at different initial kLa values (21 and 35 h-1). SCHH medium was supplemented with rice bran extract (10 g L-1) and yeast extract (1 g L-1). Cy. xylosilytica showed high xylitol production performance (19.56 g L-1), xylitol yield (0.56 g g-1) and, maximum xylitol-specific production rate (μpmáx 0.20 gxylitol·g-1 h-1) at kLa value of 21 h-1, concomitantly slowing the rate of acetic acid consumption. A faster acetic acid consumption (100%) by Cy. xylosilytica was observed at kLa of 35 h-1, concomitantly with an increase in maximum cellular growth (14.60 g L-1) and reduction in maximum xylitol production (14.56 g L-1 and Yp/s 0.34 g g-1). This study contributes to pioneering research regarding this yeast performance in bioreactors, emphasizing culture medium detoxification and xylitol production.
Collapse
Affiliation(s)
- Fernanda Palladino
- Microbiology Department, Biological Sciences Institute, Minas Gerais Federal University, Belo Horizonte, MG, 31270-901, Brazil.
| | - Rita C L B Rodrigues
- Biotechnology Department, Lorena Engineering School, São Paulo University, Lorena, SP, 12602-810, Brazil
| | - Sinval Pedroso da Silva
- Mechanical Department, Minas Gerais Federal Institute of Education, Science, and Technology (IFMG), Belo Horizonte, MG, 36415-000, Brazil
| | - Carlos A Rosa
- Microbiology Department, Biological Sciences Institute, Minas Gerais Federal University, Belo Horizonte, MG, 31270-901, Brazil
| |
Collapse
|