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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Temporal dynamics and metabolic correlation between lactate-producing and hydrogen-producing bacteria in sugarcane vinasse dark fermentation: The key role of lactate

Full text
Author(s):
Fuess, Lucas Tadeu [1] ; Nunes Ferraz, Jr., Antonio Djalma [2] ; Machado, Carla Botelho [2] ; Zaiat, Marcelo [1]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, EESC, LPB, Av Joao Dagnone 1100, BR-13563120 Sao Carlos, SP - Brazil
[2] CNPEM, Lab Nacl Ciencia & Tecnol Bioetanol CTBE, Polo Alta Tecnol 2, Rua Giuseppe Maximo Scolfaro 10000, POB 6170, BR-13083970 Campinas, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Bioresource Technology; v. 247, p. 426-433, JAN 2018.
Web of Science Citations: 14
Abstract

This study aimed to better understand the role of different microbial groups and the determining fermentation pathways in a biohydrogen (bioH(2))-producing reactor fed with sugarcane vinasse by using next-generation sequencing and principal component analysis (PCA). Both microbial structure and dynamics were characterized. The highest bioH(2) production levels were associated with the Thermoanaerobacterium genus, whilst lactate-producing bacteria comprised the dominant genera (e.g. Lactobacillus and Leuconostoc) within the reactor at both stable and unstable bioH(2)-producing periods. PCA further revealed that the fermentation of lactate played a dual role in the reactor, as both bioH(2)-producing (acetate + lactate -> butyrate + bioH(2)) and non-bioH(2)-producing (lactate. propionate + acetate) routes could be observed. Overall, the results suggested that lactate is the primary alternative carbon source in vinasse-fed systems subjected to carbohydrate-shortage conditions. (AU)

FAPESP's process: 12/15606-9 - Thermophilic anaerobic biodigestion of vinasse in combined acidogenic-methanogenic systems to enhance bioenergy recovery in first generation sugarcane biorefineries
Grantee:Lucas Tadeu Fuess
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 15/21650-9 - Applied metagenomics for biofuels development and environmental sustainability in biorefineries based on sugarcane
Grantee:Antônio Djalma Nunes Ferraz Júnior
Support type: Scholarships abroad - Research Internship - Post-doctor
FAPESP's process: 09/15984-0 - Bioenergy production from wastewaters and environmental fitting of liquid and solid wastes generated
Grantee:Marcelo Zaiat
Support type: Research Projects - Thematic Grants
FAPESP's process: 13/15665-8 - Structure and functional dynamics of microbial community of anaerobic digesters applied to energy recovery and environmental framework of wastes generated in bioethanol production of 1st and 2nd generation
Grantee:Antônio Djalma Nunes Ferraz Júnior
Support type: Scholarships in Brazil - Post-Doctorate