Bacterial Spores
Mostrando 1-12 de 303 artigos, teses e dissertações.
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1. Effects of Bacillus subtilis biocementation on the mechanical properties of mortars
Resumo Este estudo tem como objetivo avaliar a influência da adição de esporos de B. subtilis AP91 nas propriedades mecânicas de argamassas. Para tanto, a bactéria B. subtilis AP91 isolada de folhas de arroz da variedade agulha precoce foi utilizada na concentração de 105 esporos/mL em argamassas com traço de 1:3 (em massa) e relação água/cimento
Rev. IBRACON Estrut. Mater.. Publicado em: 2019-02
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2. Isolation and molecular characterization of Bacillus thuringiensis found in soils of the Cerrado region of Brazil, and their toxicity to Aedes aegypti larvae
ABSTRACT This study investigated the potential of Bacillus thuringiensis isolates obtained in the Cerrado region of the Brazilian state of Maranhão for the biological control of Aedes aegypti larvae. The isolates were obtained from soil samples and the identification of the B. thuringiensis colonies was based on morphological characteristics. Bioassays were
Rev. Bras. entomol.. Publicado em: 2018-01
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3. Antibiotics produced by Streptomyces
Streptomyces is a genus of Gram-positive bacteria that grows in various environments, and its shape resembles filamentous fungi. The morphological differentiation of Streptomyces involves the formation of a layer of hyphae that can differentiate into a chain of spores. The most interesting property of Streptomyces is the ability to produce bioactive secondar
Braz J Infect Dis. Publicado em: 2012-10
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4. Slow sand filtration eradicates eucalypt clonal nursery plant pathogens from recycled irrigation water in Brazil
Contaminated irrigation water constitutes one of the main sources of plant pathogens that can cause disease and lead to potentially significant production losses in forest nurseries. Recycling of contaminated irrigation water increases the risk of spreading diseases. The objective of this study was to evaluate a simple slow sand filtration treatment of irrig
Trop. plant pathol.. Publicado em: 2012-10
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5. Expression of phenazine biosynthetic genes during the arbuscular mycorrhizal symbiosis of Glomus intraradices
To explore the molecular mechanisms that prevail during the establishment of the arbuscular mycorrhiza symbiosis involving the genus Glomus, we transcriptionally analysed spores of Glomus intraradices BE3 during early hyphal growth. Among 458 transcripts initially identified as being expressed at presymbiotic stages, 20% of sequences had homology to previous
Brazilian Journal of Microbiology. Publicado em: 2012-06
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6. Expressão de microplusina em Aedes aegypti: avaliação do efeito sobre Plasmodium gallinaceum. / Microplusin expression in Aedes aegypti: evaluation of effect on Plasmodium gallinaceum.
A transmissão de parasitas da malária por mosquitos vetores é dependente do desenvolvimento bem sucedido das formas infectantes de Plasmodium sp., especialmente os esporozoítas, que são as formas que infectam o hospedeiro vertebrado. A manipulação genética de mosquitos vetores tem sido uma estratégia alternativa na tentativa de controle da malária.
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/03/2011
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7. Produção de nisina em leite desnatado diluído por Lactococcus lactis subsp. lactis ATCC 11454 em biorreator / Nisin production in diluted skimmed milk utilizing Lactococcus lactis subsp. lactis ATCC 11454 in bioreactor
Nisin is a natural antimicrobial peptide produced by Lactococcus lactis subsp. lactis ATCC 11454 during its exponential growth phase. The bacteriocin is used as natural food preservative due to its antimicrobial activity against Gram-positive bacteria and outgrowth of spores. This property allows its application in numerous fields (pharmaceutical, veterinary
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/03/2011
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8. The nematicidal effect of some bacterial biofertilizers on Meloidogyne incognita in sandy soil
In a greenhouse experiment, the nematicidal effect of some bacterial biofertilizers including the nitrogen fixing bacteria (NFB) Paenibacillus polymyxa (four strains), the phosphate solubilizing bacteria (PSB) Bacillus megaterium (three strains) and the potassium solubilizing bacteria (KSB) B. circulans (three strains) were evaluated individually on tomato p
Brazilian Journal of Microbiology. Publicado em: 2011-03
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9. Dosimetria esporular: Bacillus subtilis TKJ6312 como biossensor de radiação solar biologicamente ativa
Since 2000, spore dosimetry and spectral photometry have been performed in parallel at the Southern Space Observatory, São Martinho da Serra (Southern Brazil). A comparative study involving data from Punta Arenas - Chile (53.2º S), São Martinho da Serra (29.5º S), Padang - Indonesia (0.9ºS), Brussels - Belgium (50.9º N) and Kiyotake - Japan (31.9º N)
Química Nova. Publicado em: 2009
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10. Detection of Bacillus cereus in milk and evaluation of the germination of its spores to the ambient and refrigeration temperatures after process of boil / Detecção de Bacillus cereus em leite e avaliação da germinação de seus esporos à temperatura ambiente e sob refrigeração após processo de fervura
The microbiological analysis acts as basic tool for the attainment of data on the quality, health, hygiene and security in the food production, in such a way, she has been adopted in the nourishing industry for the quality control. For its complete and balanced composition, milk is an ideal substratum for the development of diverse groups of microorganisms.
Publicado em: 2008
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11. Rhizospheric microorganisms and arbuscular mycorrhiza in soil from a petrochemical waste landfarming system. / Microbiota RizosfÃrica e Micorriza Arbuscular em Solo de "Landfarming" de ResÃduos PetroquÃmicos.
In the petroleum industrialization a great volume of different toxic residues is generated. Because of these waste environmental hazards they need to be adequately treated before final disposition in the environment. These wastes are usually treated by landfarming systems, but this technique has only relative success, since it doesn t completely remove all c
Publicado em: 2007
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12. Development of thermal process otmized for mosto sugar canes in alcoholic fermentation / Desenvolvimento de processo termico otimizado para mosto de caldo de cana na fermentação alcoolica
In this research is proposed a thermal treatment process for sugar cane must with maximum retention of fermentable sugar (sucrose, glucose and fructose), to promote a thermal inactivation of its bacterial contaminants and therefore, those of alcoholic fermentation. With this objective were examined the thermo degradation kinetics of sucrose, glucose, fructos
Publicado em: 2005