ABSTRACT The objective of this study was to evaluate the antifungal activity of nanoemulsions encapsulating essential oil of oregano (Origanum vulgare), both in vitro and after application on Minas Padrão cheese. Nanodispersions were obtained by the phase inversion temperature method. Cladosporium sp., ...
Antifúngicos/análisis,
Antifúngicos/farmacología,
Queso/análisis,
Queso/microbiología,
Contaminación de Alimentos/prevención & control,
Conservación de Alimentos/métodos,
Conservantes de Alimentos/análisis,
Conservantes de Alimentos/farmacología,
Hongos/clasificación,
Hongos/efectos de los fármacos,
Hongos/aislamiento & purificación,
Pruebas de Sensibilidad Microbiana,
Aceites Volátiles/análisis,
Aceites Volátiles/farmacología,
Origanum/química
Elias, Luciana M;
Fortkamp, Diana;
Sartori, Sérgio B;
Ferreira, Marília C;
Gomes, Luiz H;
Azevedo, João L;
Montoya, Quimi V;
Rodrigues, André;
Ferreira, Antonio G;
Lira, Simone P.
ABSTRACT Anthracnose is a crop disease usually caused by fungi in the genus Colletotrichum or Gloeosporium. These are considered one of the main pathogens, causing significant economic losses, such as in peppers and guarana. The current forms of control include the use of resistant cultivars, sanitary pr...
Colletotrichum/efectos de los fármacos,
Colletotrichum/fisiología,
Endófitos/química,
Endófitos/genética,
Endófitos/aislamiento & purificación,
Endófitos/metabolismo,
Fungicidas Industriales/química,
Fungicidas Industriales/aislamiento & purificación,
Fungicidas Industriales/farmacología,
Espectrometría de Masas,
Estructura Molecular,
Paullinia/microbiología,
Filogenia,
Enfermedades de las Plantas/microbiología,
Enfermedades de las Plantas/prevención & control,
Xylariales/química,
Xylariales/genética,
Xylariales/aislamiento & purificación,
Xylariales/metabolismo
ABSTRACT Matrix Assisted Laser Desorption/Ionization and Time of Flight mass spectrometry (MALDI-TOF MS) is a powerful tool for the identification of bacteria through the detection and analysis of their proteins or fragments derived from ribosomes. Slight sequence variations in conserved ribosomal protei...
Técnicas de Tipificación Bacteriana/métodos,
Brasil,
ADN Bacteriano/genética,
Leptospira/química,
Leptospira/clasificación,
Leptospira/genética,
Leptospira/aislamiento & purificación,
Leptospirosis/microbiología,
ARN Ribosómico 16S/genética,
Espectrometría de Masa por Láser de Matriz Asistida de Ionización Desorción/métodos,
Espectrometría de Masas en Tándem/métodos
ABSTRACT A bacterium isolated from Sterkfontein dam was confirmed to produce bioflocculant with excellent flocculation activity. The 16S rDNA nucleotide sequence analyses revealed the bacteria to have 99% similarity to Streptomyces platensis strain HBUM174787 and the sequence was deposited in the Genbank...
Proteínas Bacterianas/genética,
Proteínas Bacterianas/metabolismo,
Carbono/metabolismo,
Floculación,
Nitrógeno/metabolismo,
Ríos/química,
Streptomyces/química,
Streptomyces/genética,
Streptomyces/aislamiento & purificación,
Streptomyces/metabolismo,
Aguas Residuales/química,
Microbiología del Agua,
Purificación del Agua
ABSTRACT The growth of yeasts in culture media can be affected by many factors. For example, methanol can be metabolized by other pathways to produce ethanol, which acts as an inhibitor of the heterologous protein production pathway; oxygen concentration can generate aerobic or anaerobic environments and...
Medios de Cultivo/química,
Medios de Cultivo/metabolismo,
Ácidos Grasos no Esterificados/metabolismo,
Fermentación,
Glicerol/metabolismo,
Metanol/metabolismo,
Pichia/genética,
Pichia/crecimiento & desarrollo,
Pichia/metabolismo,
Proteínas Recombinantes/genética,
Temperatura
ABSTRACT Pyrene and benzo[a]pyrene (BaP) are high molecular weight polycyclic aromatic hydrocarbons (PAHs) recalcitrant to microbial attack. Although studies related to the microbial degradation of PAHs have been carried out in the last decades, little is known about degradation of these environmental po...
Basidiomycota/clasificación,
Basidiomycota/genética,
Basidiomycota/aislamiento & purificación,
Basidiomycota/metabolismo,
Benzo(a)pireno/química,
Benzo(a)pireno/metabolismo,
Biodegradación Ambiental,
Sistema Enzimático del Citocromo P-450/genética,
Sistema Enzimático del Citocromo P-450/metabolismo,
Proteínas Fúngicas/genética,
Proteínas Fúngicas/metabolismo,
Filogenia,
Hidrocarburos Policíclicos Aromáticos/química,
Hidrocarburos Policíclicos Aromáticos/metabolismo,
Pirenos/química,
Pirenos/metabolismo,
Agua de Mar/microbiología
ABSTRACT We examined microbial communities from enriched fine and retorted shale particles using sequencing of V4 variable region of 16S rRNA. High number of microbial genera was found in both enriched shale by-products that were dominate by Actinobacteria, Firmicutes and Proteobacteria, showing differen...
Bacterias/clasificación,
Bacterias/genética,
Bacterias/aislamiento & purificación,
Biodiversidad,
Brasil,
ADN Bacteriano/genética,
Sedimentos Geológicos/química,
Sedimentos Geológicos/microbiología,
Microbiota,
Filogenia,
ARN Ribosómico 16S/genética,
Residuos/análisis
ABSTRACT Sour cassava starch (Polvilho azedo) is obtained from a spontaneous fermentation conducted by microorganisms from raw materials and fermentation tanks. This product is traditionally used in the baking industry for the manufacture of biscuits and Brazilian cheese breads. However, the end of ferme...
Brasil,
Fermentación,
Microbiología de Alimentos,
Lactobacillus/genética,
Lactobacillus/aislamiento & purificación,
Lactobacillus/metabolismo,
Manihot/química,
Manihot/metabolismo,
Microbiota,
Almidón/química,
Almidón/metabolismo,
Levaduras/genética,
Levaduras/metabolismo
ABSTRACT The present study aimed to compare two MALDI-TOF identification methods [(a) direct sample identification after pre-incubation; or (b) use of bacteria isolated on pre-culture)] to standard, traditional bench microbiology. A total of 120 quarter milk samples from 40 Holstein lactating cows were s...
Técnicas de Tipificación Bacteriana/métodos,
Mastitis Bovina/microbiología,
Mastitis Bovina/fisiopatología,
Leche/química,
Leche/microbiología,
Espectrometría de Masa por Láser de Matriz Asistida de Ionización Desorción/métodos,
Staphylococcus/química,
Staphylococcus/genética,
Staphylococcus/aislamiento & purificación,
Streptococcus/química,
Streptococcus/genética,
Streptococcus/aislamiento & purificación
ABSTRACT In order for the use of biological carotenoids to become feasible, it is necessary to have adequate low cost sources and improved methods of cultivation. The aim of this study was to evaluate the effect of supplementation with nitrogen, phosphorus, zinc, and magnesium, on the biomass and caroten...
Biomasa,
Carotenoides/biosíntesis,
Medios de Cultivo/síntesis química,
Medios de Cultivo/química,
Medios de Cultivo/metabolismo,
Nitrógeno/metabolismo,
Rhodotorula/genética,
Rhodotorula/crecimiento & desarrollo,
Rhodotorula/metabolismo,
Saccharum/metabolismo,
Saccharum/microbiología
