Microbial Production of the Off-Flavor Geosmin in Tilapia Production in Brazilian Water Reservoirs: Importance of Bacteria in the Intestine and Other Fish-Associated Environments

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Autor(es): dc.contributorAalborg Univ-
Autor(es): dc.contributorUniv Copenhagen-
Autor(es): dc.contributorSao Paulo State Agribusiness Technol Jau-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatorLukassen, Mie B.-
Autor(es): dc.creatorJonge, Nadieh de-
Autor(es): dc.creatorBjerregaard, Sabine M.-
Autor(es): dc.creatorPodduturi, Raju-
Autor(es): dc.creatorJorgensen, Niels O. G.-
Autor(es): dc.creatorPetersen, Mikael A.-
Autor(es): dc.creatorDavid, Gianmarco S.-
Autor(es): dc.creatorSilva, Reinaldo J. da [UNESP]-
Autor(es): dc.creatorNielsen, Jeppe L.-
Data de aceite: dc.date.accessioned2022-02-22T00:09:10Z-
Data de disponibilização: dc.date.available2022-02-22T00:09:10Z-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2019-10-30-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.3389/fmicb.2019.02447-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/196340-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/196340-
Descrição: dc.descriptionAim To determine major sources of microbially produced geosmin in the commercially important aquaculture fish species tilapia. Methods and Results Abundance and composition of geosmin-producing bacteria in water and fish biosphere (intestine, digesta, and fins) of Nile tilapia (Oreachromis niloticus) raised in net cages in Brazilian freshwater farms were examined. By combining qPCR of the geosmin synthase geoA gene and 16S rRNA gene amplicon sequencing to identify potential geosmin-producing organisms, we observed that the proportion and composition of geosmin producers appeared to be rather similar in the water, digesta, intestinal mucous, and on skin, making up about 0.1-0.2% of the total bacterial densities. A high proportion of Cyanobacteria and other putative geosmin producers affiliated to the Actinomycetales were identified in the intestinal mucous layer. The main uptake site for geosmin in fish is traditionally assumed to be through the gill surface, but the present results suggest that uptake by the intestinal tract may represent a major source of geosmin uptake in fish. Conclusion The high abundance of geosmin-producing bacteria in the intestinal mucous layer and digesta may indicate that the digestive system in fish is an important, but hitherto overlooked, source of geosmin and likely other off-flavors in fish.-
Descrição: dc.descriptionDanish Council for Strategic Research-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionAalborg Univ, Dept Chem & Biosci, Aalborg, Denmark-
Descrição: dc.descriptionUniv Copenhagen, Dept Plant & Environm Sci, Copenhagen, Denmark-
Descrição: dc.descriptionUniv Copenhagen, Dept Food Sci, Sect Design & Consumer Behav, Copenhagen, Denmark-
Descrição: dc.descriptionSao Paulo State Agribusiness Technol Jau, Jau, Brazil-
Descrição: dc.descriptionUniv Estadual Paulista Julio Mesquite Filho, Inst Biociencias, Dept Parasitol, Botucatu, SP, Brazil-
Descrição: dc.descriptionUniv Estadual Paulista Julio Mesquite Filho, Inst Biociencias, Dept Parasitol, Botucatu, SP, Brazil-
Descrição: dc.descriptionDanish Council for Strategic Research: 3050-00008A-
Descrição: dc.descriptionFAPESP: 3050-00008A3050-00008A-
Descrição: dc.descriptionFAPESP: 2013/50504-5-
Formato: dc.format12-
Idioma: dc.languageen-
Publicador: dc.publisherFrontiers Media Sa-
Relação: dc.relationFrontiers In Microbiology-
???dc.source???: dc.sourceWeb of Science-
Palavras-chave: dc.subjectgeosmin-
Palavras-chave: dc.subjectgeoA-
Palavras-chave: dc.subjectoff-flavor-
Palavras-chave: dc.subjectNile tilapia-
Palavras-chave: dc.subjectgastrointestinal tract-
Palavras-chave: dc.subjectaquaculture production-
Título: dc.titleMicrobial Production of the Off-Flavor Geosmin in Tilapia Production in Brazilian Water Reservoirs: Importance of Bacteria in the Intestine and Other Fish-Associated Environments-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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