Consulta: creatorFacets:"Moraes,Luiz Alberto Beraldo de"
Registros recuperados: 3
Data/hora: 13/06/2024 05:24:25

In vitro evaluation of novel crude extracts produced by actinobacteria for modulation of ruminal fermentation
Provedor de dados: 96
Autores: Alves,Bruna Gomes; Martins,Cristian Marlon de Magalhães Rodrigues; Peti,Ana Paula Ferranti; Moraes,Luiz Alberto Beraldo de; Santos,Marcos Veiga dos.
ABSTRACT We evaluated the inclusion of two crude extracts produced by Streptomyces genus on in vitro dry matter and organic matter digestibility (IVDMD; IVOMD), cumulative gas production, volatile fatty acids (VFA), and methane (CH4) and ammoniacal nitrogen (NH3-N) concentration. The experimental design was randomized blocks with three blocks and four treatments: AMC (1.2 mg/25 mL ruminal inoculum), Caat (1.2 mg/25 mL ruminal inoculum), negative control (no inclusion of extracts), and positive control (sodium monensin, 1.7 mg/25 mL ruminal inoculum). Ruminal fluid samples were collected from three multiparous Holstein dairy cows fitted with ruminal cannula and incubated in a 24-h fermentation assay. There was no effect of crude extract inclusion in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Actinobacteria; Extracts; In vitro fermentation; Monensin.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100721

Antifungal compound produced by the cassava endophyte Bacillus pumilus MAIIIM4a
Provedor de dados: 63
Autores: Melo,Flávia Mandolesi Pereira de; Fiore,Marli Fátima; Moraes,Luiz Alberto Beraldo de; Silva-Stenico,Maria Estela; Scramin,Shirlei; Teixeira,Manoel de Araújo; Melo,Itamar Soares de.
In the search for new organisms and new secondary metabolites, a study was conducted to evaluate the diversity of endophytic bacteria from ethnovarieties of cassava cultivated by Brazilian Amazon Indian tribes and also to study the secondary metabolites produced by a Bacillus pumilus strain. Sixty seven cassava endophytic bacteria were subjected to 16S rRNA sequencing and FAME analysis. The bacterial profile revealed that 25% of all endophytic isolates belonged to the genus Bacillus. The isolate B. pumilus MAIIIM4a showed a strong inhibitory activity against the fungi Rhizoctonia solani, Pythium aphanidermatum and Sclerotium rolfsii. Secondary metabolites of this strain were extracted using hexane, dichloromethane and ethyl acetate. Extracts were subjected...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: ESI-MS/MS; Pumilacidin; Endophytic bacteria; Bioautography.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000500002

Degradation of textile dyes by cyanobacteria
Provedor de dados: 58
Autores: Dellamatrice,Priscila Maria; Silva-Stenico,Maria Estela; Moraes,Luiz Alberto Beraldo de; Fiore,Marli Fátima; Monteiro,Regina Teresa Rosim.
Abstract Dyes are recalcitrant compounds that resist conventional biological treatments. The degradation of three textile dyes (Indigo, RBBR and Sulphur Black), and the dye-containing liquid effluent and solid waste from the Municipal Treatment Station, Americana, São Paulo, Brazil, by the cyanobacteria Anabaena flos-aquae UTCC64, Phormidium autumnale UTEX1580 and Synechococcus sp. PCC7942 was evaluated. The dye degradation efficiency of the cyanobacteria was compared with anaerobic and anaerobic-aerobic systems in terms of discolouration and toxicity evaluations. The discoloration was evaluated by absorption spectroscopy. Toxicity was measured using the organisms Hydra attenuata, the alga Selenastrum capricornutum and lettuce seeds. The three...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dyes; Toxicity; Discoloration; Cyanobacteria; Degradation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100025