|
|
|
Registros recuperados: 53 | |
|
|
Alves,Maria Helena; Campos-Takaki,Galba M.; Porto,Ana Lúcia Figueiredo; Milanez,Adauto Ivo. |
Fungi are well known by their ability to excrete enzymes into the environment. Among them, representatives of Mucor Fresen. have important biotechnological potential and some of them produce industrial enzymes. This work studied amylase, lipase, polygalacturonase and protease production by fifty-six isolates of Mucor belonging to 11 different taxa, selected from herbivores dung using solid media. The results showed that the majority of the isolates presented several enzymatic activities with predominance of polygalacturonase (96%), followed by amylase (84%), protease (82%) and lipase (66%). |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fungal enzymes; Mucor; Amylase; Lipase; Polygalacturonase; Protease; Herbivorous dung. |
Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822002000400009 |
| |
|
| |
|
|
Dhawan,Manish; Joshi,Neelam. |
Abstract Beauveria bassiana, an entomopathogenic fungus, is the alternative biocontrol agent exploited against major economic crop pests. Pieris brassicae L. is an emerging pest of the Brassicaceae family. Therefore, in the present study, fungal isolates of Beauveria bassiana, viz. MTCC 2028, MTCC 4495, MTCC 6291, and NBAII-11, were evaluated for their virulence against third instar larvae of P. brassicae. Among all these fungal isolates, maximum mortality (86.66%) was recorded in B. bassiana MTCC 4495 at higher concentration of spores (109 conidia/ml), and the minimum mortality (30.00%) was recorded in B. bassiana MTCC 6291 at a lower concentration (107 conidia/ml) after ten days of treatment. The extracellular cuticle-degrading enzyme activities of... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chitinase; Entomopathogenic fungi; Lipase; Mortality; Protease. |
Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300522 |
| |
|
| |
|
|
Oliveira,Lilian C.G.; Ramos,Patricia Locosque; Marem,Alyne; Kondo,Marcia Y.; Rocha,Rafael C.S.; Bertolini,Thiago; Silveira,Marghuel A.V.; Cruz,João Batista da; Vasconcellos,Suzan Pantaroto de; Juliano,Luiz; Okamoto,Debora N.. |
Halophilic microorganisms are able to grow in the presence of salt and are also excellent source of enzymes and biotechnological products, such as exopolysaccharides (EPSs) and polyhydroxyalkanoates (PHAs). Salt-tolerant bacteria were screened in the Organic Composting Production Unit (OCPU) of São Paulo Zoological Park Foundation, which processes 4 ton/day of organic residues including plant matter from the Atlantic Rain Forest, animal manure and carcasses and mud from water treatment. Among the screened microorganisms, eight halotolerant bacteria grew at NaCl concentrations up to 4 M. These cultures were classified based on phylogenetic characteristics and comparative partial 16S rRNA gene sequence analysis as belonging to the genera Staphylococcus,... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Halophilic; Protease; Lipase; Amylase; Cellulase. |
Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000200347 |
| |
|
|
Corrêa,Ana Paula F.; Daroit,Daniel J.; Velho,Renata V.; Brandelli,Adriano. |
The production of extracellular hydrolases by a psychrotrophic bacterium isolated from refrigerated raw milk, and identified as a Pseudomonas sp. belonging to the Pseudomonas jenssenii group, was studied. This bacterium produced proteolytic and lipolytic enzymes in all media investigated (skim milk, cheese whey, casein broth, and tryptone soy broth). High levels of α-glucosidase were produced in skim milk broth. Hydrolytic enzymes detected in skim milk broth are of particular concern, indicating that these enzymes could be produced by Pseudomonas sp. during the cold storage of raw milk, contributing to the spoilage problem in milk and dairy products. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pseudomonas; Hydrolases; Protease; Lipase; Glycosidase. |
Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000400034 |
| |
|
|
Shabbiri,Khadija; Adnan,Ahmad; Jamil,Sania; Ahmad,Waqar; Noor,Bushra; Rafique,H.M.. |
Various cultivation parameters were optimized for the production of extra cellular protease by Brevibacterium linens DSM 20158 grown in solid state fermentation conditions using statistical approach. The cultivation variables were screened by the Plackett-Burman design and four significant variables (soybean meal, wheat bran, (NH4)2SO4 and inoculum size were further optimized via central composite design (CCD) using a response surface methodological approach. Using the optimal factors (soybean meal 12.0g, wheat bran 8.50g, (NH4)2SO4) 0.45g and inoculum size 3.50%), the rate of protease production was found to be twofold higher in the optimized medium as compared to the unoptimized reference medium. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brevibacterium linens; Protease; Solid-state fermentation; Plackett-Burman Design; Central Composite Design (CCD). |
Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000300031 |
| |
|
| |
|
| |
|
|
Gomaa,Eman Zakaria. |
The potentiality of 23 bacterial isolates to produce alkaline protease and carboxymethyl-cellulase (CMCase) on Ficus nitida wastes was investigated. Bacillus pumillus ATCC7061 was selected as the most potent bacterial strain for the production of both enzymes. It was found that the optimum production of protease and CMCase were recorded at 30 °C, 5% Ficus nitida leaves and incubation period of 72 h. The best nitrogen sources for protease and CMCase production were yeast extract and casein, respectively. Also maximum protease and CMCase production were reported at pH 9 and pH 10, respectively. The enzymes possessed a good stability over a pH range of 8-10, expressed their maximum activities at pH10 and temperature range of 30-50 °C, expressed their maximum... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alkaliphillic; Protease; Carboxymethylcellulase; Production; Characterization. |
Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200033 |
| |
|
| |
|
|
Barbosa,Nei André Arruda; Sakomura,Nilva Kazue; Bonato,Melina Aparecida; Hauschild,Luciano; Oviedo-Rondon,Edgar. |
O experimento foi conduzido para avaliar a eficiência de enzimas exógenas em dietas sobre o desempenho de frangos de corte. Um total de 1440 pintos de corte machos (Cobb 500®) foram distribuídos em um delineamento inteiramente casualizado em esquema fatorial 2x2 (duas dietas com diferentes densidades nutricionais; com e sem a adição enzimática) com 8 repetições de 45 aves em cada unidade experimental. As dietas com diferentes densidades nutricionais foram: controle positivo (níveis normais) e um controle negativo (com redução de 4,3 e 4,5% de energia metabolizável; 16,7 e 17,7% de cálcio e 35 e 42,7% de fósforo, nas fases inicial e de crescimento, respectivamente). A suplementação enzimática consistiu da combinação das enzimas fitase (100g t-1) e amilase,... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aves; Fitase; Amilase; Protease; Xilanase. |
Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782012000800027 |
| |
Registros recuperados: 53 | |
|
|
|