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Total 1209 results found since Jan 2013.
Microbiological evaluation of homemade mayonnaise and self-serve acai sold in Aragua ína, Tocantins
In this study, samples of homemade spiced mayonnaise and self-serve acai sold in the city of Araguaína, Tocantins, Brazil were analyzed for microbiological contaminants. Acai was collected from 10 stores, one sample from each store, and tested for mold, yeast, and coliforms, as well as coliform identification and total and thermotolerant coliform counts. Mayonnaise was collected from 20 snack bars, one sample from each. These samples were inoculated on MacConkey and Salmonella Shigella agar plates, and the plates were analyzed for growth. Salmonella spp. were detected in some Mayonnaise samples, and coliforms were detecte...
Source: Braz J Biol - September 20, 2023 Category: Biology Authors: M J M Paiva M L R Silva M R Alcantara F B S Santos J V R Costa R F Diogo L T F Silva A L Santos E H S Guedes P O Vellano C C R G N Magalh ães I A M Damasceno Source Type: research
Unonopsis guatterioides: morphological and chemical characteristics of its fruits and seeds, and germination processes under experimental conditions
This study aimed to evaluate the morphometry of seeds and fruits, their chemical composition, and the germination at different temperatures using seeds subjected to tegumentary dormancy break from fruits collected in a semi-deciduous seasonal forests in Mato Grosso do Sul, Brazil. The fruits under ripening showed a higher number of secondary metabolites and higher phenolic compounds. Morphometry results indicated that most seeds have length between 3.5 and 5.6 (81.3%), width between 8.1 and 9.0 mm (85.0%) and average weight of 0.28 g. The results indicate that there is a greater number of fruits with length ranging between...
Source: Braz J Biol - September 20, 2023 Category: Biology Authors: A K M Oliveira R Matias J C Pina Source Type: research
Gill and hepatic histological alterations in Sciades herzbergii resulting from trace element contamination in the Port of S ão Luiz, Brazil
The objective of this study was to evaluate, through changes in the gills and livers of Sciades herzbergii, the environmental contamination to which estuarine organisms are exposed in two areas in São Marcos Bay - MA. Two collection areas located in São Marcos Bay were selected for this study: A1, an area close to the Port Complex, and A2, an area on Caranguejos Island (included in the Environmental Protection Area of Baixada Maranhense). Collections were carried out during rainy and dry periods. Sediments (for trace element analyses), surface water (for physico-chemical analyses), and specimens of S. herzbergii (for bio...
Source: Braz J Biol - September 20, 2023 Category: Biology Authors: E B Ribeiro I M A Lima F C M Carvalho-Neto I C S Bezerra L C Sodr é R N F Carvalho-Neta Source Type: research
Pathogens and microorganisms in the mangrove oyster Crassostrea gasar cultivated in an estuarine environment in Northeast Brazil
Braz J Biol. 2023 Sep 15;83:e272789. doi: 10.1590/1519-6984.272789. eCollection 2023.ABSTRACTEstuaries are important ecosystems due to the ecological services they provide, acting as nurseries for many species of fish and invertebrates, and are also used as environments for the extraction and cultivation of mollusks. Oysters are animals that filter water to obtain oxygen and nutrients. In this process, they can bioaccumulate microorganisms and chemical substances in their tissues. The growth of mollusk culture in Northeastern Brazil requires the health identification of cultivated oysters through the quantification of the ...
Source: Braz J Biol - September 20, 2023 Category: Biology Authors: D C S Mendes D T A Rodrigues H M Gomes T M Lenz C M Silva I G Antonio Source Type: research
A food interaction network between psittacines and plants in an urban area in the city of S ão Carlos - SP, southeastern Brazil
Braz J Biol. 2023 Sep 15;83:e269353. doi: 10.1590/1519-6984.269353. eCollection 2023.ABSTRACTThe Psittacidae presents a great diversity of species in the Neotropical region performing fundamental ecological functions for ecosystems. These frugivorous birds can occupy different positions in the antagonistic-mutualistic gradient of food interactions, acting as predators and/or as seed dispersers. Little is known about bird-plant ecological interaction networks focusing on psittacines in urban environments, which may compromise the management of natural areas in anthropic landscapes and hinder the planning of conservation str...
Source: Braz J Biol - September 20, 2023 Category: Biology Authors: A M Leoni M G Reis M M Dias Filho Source Type: research
Microbiological evaluation of homemade mayonnaise and self-serve acai sold in Aragua ína, Tocantins
In this study, samples of homemade spiced mayonnaise and self-serve acai sold in the city of Araguaína, Tocantins, Brazil were analyzed for microbiological contaminants. Acai was collected from 10 stores, one sample from each store, and tested for mold, yeast, and coliforms, as well as coliform identification and total and thermotolerant coliform counts. Mayonnaise was collected from 20 snack bars, one sample from each. These samples were inoculated on MacConkey and Salmonella Shigella agar plates, and the plates were analyzed for growth. Salmonella spp. were detected in some Mayonnaise samples, and coliforms were detecte...
Source: Braz J Biol - September 20, 2023 Category: Biology Authors: M J M Paiva M L R Silva M R Alcantara F B S Santos J V R Costa R F Diogo L T F Silva A L Santos E H S Guedes P O Vellano C C R G N Magalh ães I A M Damasceno Source Type: research
Unonopsis guatterioides: morphological and chemical characteristics of its fruits and seeds, and germination processes under experimental conditions
This study aimed to evaluate the morphometry of seeds and fruits, their chemical composition, and the germination at different temperatures using seeds subjected to tegumentary dormancy break from fruits collected in a semi-deciduous seasonal forests in Mato Grosso do Sul, Brazil. The fruits under ripening showed a higher number of secondary metabolites and higher phenolic compounds. Morphometry results indicated that most seeds have length between 3.5 and 5.6 (81.3%), width between 8.1 and 9.0 mm (85.0%) and average weight of 0.28 g. The results indicate that there is a greater number of fruits with length ranging between...
Source: Braz J Biol - September 20, 2023 Category: Biology Authors: A K M Oliveira R Matias J C Pina Source Type: research
Gill and hepatic histological alterations in Sciades herzbergii resulting from trace element contamination in the Port of S ão Luiz, Brazil
The objective of this study was to evaluate, through changes in the gills and livers of Sciades herzbergii, the environmental contamination to which estuarine organisms are exposed in two areas in São Marcos Bay - MA. Two collection areas located in São Marcos Bay were selected for this study: A1, an area close to the Port Complex, and A2, an area on Caranguejos Island (included in the Environmental Protection Area of Baixada Maranhense). Collections were carried out during rainy and dry periods. Sediments (for trace element analyses), surface water (for physico-chemical analyses), and specimens of S. herzbergii (for bio...
Source: Braz J Biol - September 20, 2023 Category: Biology Authors: E B Ribeiro I M A Lima F C M Carvalho-Neto I C S Bezerra L C Sodr é R N F Carvalho-Neta Source Type: research
Pathogens and microorganisms in the mangrove oyster Crassostrea gasar cultivated in an estuarine environment in Northeast Brazil
Braz J Biol. 2023 Sep 15;83:e272789. doi: 10.1590/1519-6984.272789. eCollection 2023.ABSTRACTEstuaries are important ecosystems due to the ecological services they provide, acting as nurseries for many species of fish and invertebrates, and are also used as environments for the extraction and cultivation of mollusks. Oysters are animals that filter water to obtain oxygen and nutrients. In this process, they can bioaccumulate microorganisms and chemical substances in their tissues. The growth of mollusk culture in Northeastern Brazil requires the health identification of cultivated oysters through the quantification of the ...
Source: Braz J Biol - September 20, 2023 Category: Biology Authors: D C S Mendes D T A Rodrigues H M Gomes T M Lenz C M Silva I G Antonio Source Type: research
A food interaction network between psittacines and plants in an urban area in the city of S ão Carlos - SP, southeastern Brazil
Braz J Biol. 2023 Sep 15;83:e269353. doi: 10.1590/1519-6984.269353. eCollection 2023.ABSTRACTThe Psittacidae presents a great diversity of species in the Neotropical region performing fundamental ecological functions for ecosystems. These frugivorous birds can occupy different positions in the antagonistic-mutualistic gradient of food interactions, acting as predators and/or as seed dispersers. Little is known about bird-plant ecological interaction networks focusing on psittacines in urban environments, which may compromise the management of natural areas in anthropic landscapes and hinder the planning of conservation str...
Source: Braz J Biol - September 20, 2023 Category: Biology Authors: A M Leoni M G Reis M M Dias Filho Source Type: research
Impact of the early months of the COVID-19 pandemic on the sleep patterns of a Brazilian population sample
Chronobiol Int. 2023 Sep 12:1-13. doi: 10.1080/07420528.2023.2255667. Online ahead of print.ABSTRACTHumanitarian and health crisis have drastic effects on the physical and mental well-being of people. The COVID-19 pandemic forced many countries to impose containment measures on its population to halt the spread of the new coronavirus (SARS-CoV-2). This aim of this study was to explore self-reported sleep quality and insomnia symptoms in a sample of the Brazilian population before and during the COVID-19 quarantine period. Our data was collected through online questionnaires, including the Pittsburgh Sleep Quality Index, th...
Source: Chronobiology International - September 13, 2023 Category: Biology Authors: Sergio Brasil Tufik Gabriel Natan Pires Allan Saj Porcacchia Andr éia Gomes Bezerra Monica Levy Andersen Sergio Tufik Source Type: research
