Consulta: creatorFacets:"Araújo,Janete Magali de"
Registros recuperados: 4
Data/hora: 11/06/2024 07:58:54

In vivo assessment of possible probiotic properties of Zymomonas mobilis in a Wistar rat model
Provedor de dados: 69
Autores: Azerêdo,Geíza Alves de; Stamford,Tânia Lúcia Montenegro; Souza,Evandro Leite de; Veras,Flávio Fonseca; Almeida,Edvaldo Rodrigues de; Araújo,Janete Magali de.
In recent years the incorporation of probiotic bacteria into foods has received increasing scientific interest for health promotion and disease prevention. The safety and probiotic properties of Zymomonas mobilis CP4 (UFPEDA-202) was studied in a Wistar rat model fed the 10(9) colony forming units (cfu)/mL-1 of the assayed strain for 30 days. No abnormal clinical signs were noted in the group receiving viable cells of Z. mobilis and water (control) during the period of the experiment. There were no significant difference (p &gt; 0.05) in feed intake and weight gain among mice fed the Z. mobilis in comparison to the control group. No bacteria were found in blood, liver and spleen of any animals. Mice receiving Z. mobilis showed significantly differences (p...
Tipo: Journal article
Palavras-chave: Health benefit; Safety; Zymomonas mobilis.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000200003

Genetic variability in regenerated Metarhizium flavoviride protoplasts
Provedor de dados: 52
Autores: Kuklinsky-Sobral,Júlia; Luna-Alves-Lima,Elza Áurea de; Araújo,Janete Magali de; Azevedo,João Lúcio.
Protoplast isolation and regeneration were evaluated in two wild-type and two colour mutant strains of Metarhizium flavoviride. Cultivation in liquid medium, followed by mycelium treatment with Novozym 234 in the presence of KCl 0.7M as osmotic stabilizer, produced 5.05 x 10(6) to 1.15 x 10(7)x mL-1 protoplasts. The percentage of regeneration ranged from 6.65 to 27.92%. Following protoplast regeneration, one strain produced spontaneously stable morphological variant colonies. Although colonies with altered morphology have been reported in bacteria following protoplast regeneration, this is the first time that the same is described in a filamentous fungus. The original strain and one derived variant were tested for sensitivity to the fungicides benomyl and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Metarhizium flavoviride; Protoplasts; Genetic variability; Benomyl; Captan.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000100001

Seleção de bacillus spp. para produção de esterases e melhoramento de bacillus cereus (c124)
Provedor de dados: 52
Autores: Mendonça,Analucia Longman; Mariano,Rosa de Lima Ramos; Araújo,Janete Magali de; Cavalcante,Uided Maaze T.
Forty-four Bacillus spp. strains obtained from sugar cane derivates and residues, six of them isolated in this work, were tested using Tween 80 as substrate (agar-Tween 80 medium), in order to determine their esterase activity through the enzymatic index averages. After statistic analysis, B. cereus (C124) strain, which presented better results, was submitted to genetic improvement by treatment with ultraviolet light (UV). The survival curve pointed out 28" as the time necessary to obtain 30% of survivors. Fifty survivors and the wild strain C124 were compared in relation to their esterase activity as mentioned previously. The wild strain and the mutant C124UV35, which showed enzymatic index average higher than C124, were characterized in polyacrilamide...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacteria; Genetic improvement; Bacillus spp.; B. cereus; Esterase.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131998000100011

Antibiotics produced by Streptomyces
Provedor de dados: 55
Autores: Procópio,Rudi Emerson de Lima; Silva,Ingrid Reis da; Martins,Mayra Kassawara; Azevedo,João Lúcio de; Araújo,Janete Magali de.
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 secondary metabolites, such as antifungals, antivirals, antitumorals, anti-hypertensives, immunosuppressants, and especially antibiotics. The production of most antibiotics is species specific, and these secondary metabolites are important for Streptomyces species in order to compete with other microorganisms that come in contact, even within the same genre. Despite the success of the discovery of antibiotics,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Streptomyces; Antibiotics; Resistance; Infection.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702012000500011