Results: 140

Atividade antimicrobiana de Stevia rebaudiana Bertoni e de adoçantes não calóricos sobre bactérias cariogênicas: estudo in vitro

RFO UPF; 23 (1), 2018
Objetivo: avaliar a atividade antimicrobiana in vitro da planta Stevia rebaudiana Bertoni e de adoçantes não calóricos sobre o crescimento de Streptococcus mutanse Lactobacillus casei, micro-organismos cariogênicos presentes na cavidade bucal. Materiais e método: o estudo foi realizado utilizando as...

Avaliação microbiológica e higienicossanitária do leite in natura comercializado na cidade de Teresina, PI
Microbiological and hygienicosanitary evaluation of fresh milk marketed in the city of Teresina, PI

Hig. aliment; 32 (282/283), 2018
O leite é um dos alimentos mais consumidos no mundo, pois é completo, rico em nutrientes necessários para saúde dos seres vivos. Este alimento exige controle e preocupação com a segurança da matéria-prima e do produto beneficiado. O presente estudo objetivou verificar a qualidade microbiológica ...

Avaliação da qualidade microbiológica da água potável em Centro Universitário de Ribeirão Preto, SP
Evaluation of the microbiological quality of drinking water in Centro Universitário de Ribeirão Preto, SP

Hig. aliment; 32 (280/281), 2018
Avaliar a qualidade microbiológica da água potável consumida no Centro Universitário Barão de Mauá, em Ribeirão Preto-SP foi o objetivo deste artigo. Para determinação de bactérias heterotróficas foi realizada a técnica de Pour Plate e a identificação de Coliformes totais e termotolerantes ...

Development and characterization of an innovative synbiotic fermented beverage based on vegetable soybean

Braz. j. microbiol; 49 (2), 2018
Abstract Soymilk was produced from vegetable soybean and fermented by probiotics (Lactobacillus acidophilus La-5, Bifidobacterium animalis Bb-12) in co-culture with Streptococcus thermophilus. The composition of the fermented beverage and oligosaccharides content were determined. The effect of fructoolig...

Preanalytical conditions can interfere with M. tuberculosis detection by PCR in respiratory samples

Clinics; 73 (), 2018
OBJECTIVES: Tuberculosis is one of the most prevalent infections in humans. Although culture is the reference for diagnosis, its sensitivity is compromised, especially in paucibacillary samples. Because polymerase chain reaction (PCR) amplifies mycobacterial DNA, it is more sensitive than culture for the...

The role of human milk and sucrose on cariogenicity of microcosm biofilms

Abstract This study investigated the effect of human milk, alone and associated with sucrose, in the cariogenicity of biofilms in a microcosm biofilm model and compared with the cariogenicity of sucrose and bovine milk. Microcosm biofilms were grown in enamel discs in 24-well plates. Six growth condition...

Production and characterization of a biosurfactant produced by Streptomyces sp. DPUA 1559 isolated from lichens of the Amazon region

Braz. j. med. biol. res; 51 (2), 2018
Surfactants are amphipathic compounds containing both hydrophilic and hydrophobic groups, capable to lower the surface or interfacial tension. Considering the advantages of the use of biosurfactants produced by microorganisms, the aim of this paper was to develop and characterize a biosurfactant produced...

Analysis of the antimicrobial and anti-caries effects of TiF4 varnish under microcosm biofilm formed on enamel

J. appl. oral sci; 26 (), 2018
Abstract Titanium tetrafluoride (TiF4) is known for interacting with enamel reducing demineralization. However, no information is available about its potential antimicrobial effect. Objectives This study evaluated the antimicrobial and anti-caries potential of TiF4 varnish compared to NaF varnish, chlor...

Effect of γ-lactones and γ-lactams compounds on Streptococcus mutans biofilms

J. appl. oral sci; 26 (), 2018
Abstract Considering oral diseases, antibiofilm compounds can decrease the accumulation of pathogenic species such as Streptococcus mutans at micro-areas of teeth, dental restorations or implant-supported prostheses. Objective To assess the effect of thirteen different novel lactam-based compounds on th...

Influence of Helicobacter pylori culture supernatant on the ecological balance of a dual-species oral biofilm

J. appl. oral sci; 26 (), 2018
Abstract Dental caries is a chronic progressive disease occurring in the tooth hard tissue due to multiple factors, in which bacteria are the initial cause. Both Streptococcus mutans and Streptococcus sanguinis are main members of oral biofilm. Helicobacter pylori may also be detected in dental plaque, p...