Lipases Production
Mostrando 1-12 de 64 artigos, teses e dissertações.
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1. Psychrotrophic bacteria in Brazilian organic dairy products: identification, production of deteriorating enzymes and biofilm formation
Abstract The psychrotrophic bacteria count and the profile of Gram-negative bacteria present in commercial Brazilian organic dairy products (27 samples, pasteurized whole milk, Minas Frescal cheese, and yoghurt, equally distributed) as well as the biofilm-producing capacity and the production of deteriorating enzymes were investigated. Most of the samples (5
Food Sci. Technol. Publicado em: 2021-09
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2. AVALIAÇÃO DA BIOMASSA DE FUNGOS AMAZÔNICOS COMO FONTE DE LIPASES PARA BIOCATÁLISE
We evaluated the biomass of twenty Amazonian fungal isolates as a potential source of mycelium-bound lipases with hydrolytic, synthetic or enantioselective activity for biocatalysis application. We compared the hydrolytic activity of three biomass treatments (delipidated, non-delipidated and cultivated in medium without inducer). Delipidated biomass showed b
Quím. Nova. Publicado em: 2020-02
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3. Lipase Production by Aspergillus niger C by Submerged Fermentation
Abstract This study aimed to evaluate the effects of variables on the process of lipases production by Aspergillus niger C by submerged fermentation (SmF). The production assays were performed in shake flasks for 72 hours at 150 rpm and 32°C. First, a fractional factorial design 25-1 (FFD) was carried out to evaluate the effect of the following process vari
Braz. arch. biol. technol.. Publicado em: 24/10/2019
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4. The addition of the thermophilic esterase EST2 influences the fatty acids and volatile compound profiles of semi hard cheeses
Abstract During cheese ripening the hydrolytic activities of proteases and lipases are essential to develop typical flavours; usually these activities come from lactic bacteria. A way to increase cheese flavour and/or to reduce the time of ripening is the addition of exogenous enzymes during cheese making. Actually some commercial lipases are used in cheese
Food Sci. Technol. Publicado em: 29/11/2018
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5. ENZYMATIC BIODIESEL SYNTHESIS FROM ACID OIL USING A LIPASE MIXTURE
The conventional biodiesel production process has some disadvantages. It is necessary to use refined vegetable oils with low free fatty acids (FFAs) content. An alternative route is to use low-cost acid oils in an enzymatic process. The use of lipases allows simultaneous esterification of FFAs and transesterification of triglycerides present in raw material
Quím. Nova. Publicado em: 2018-03
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6. Bacterial selection for biological control of plant disease: criterion determination and validation
Abstract This study aimed to evaluate the biocontrol potential of bacteria isolated from different plant species and soils. The production of compounds related to phytopathogen biocontrol and/or promotion of plant growth in bacterial isolates was evaluated by measuring the production of antimicrobial compounds (ammonia and antibiosis) and hydrolytic enzymes
Braz. J. Microbiol.. Publicado em: 2017-03
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7. POTENCIAL CATALÍTICO DE LIPASES LIGADAS AO MICÉLIO DE FUNGOS FILAMENTOSOS EM PROCESSOS DE BIOTRANSFORMAÇÃO
Over the past decades, mycelium-bound lipase of filamentous fungus has been extensively studied as an alternative biocatalyst in biotransformation processes. Mycelium-bound lipase can be used directly as suspended free cells or immobilized within biomass support particles as whole cells biocatalyst. In the latter, cells can be immobilized in situ or extra si
Quím. Nova. Publicado em: 2017-01
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8. Process optimization for production and purification of a thermostable, organic solvent tolerant lipase from Acinetobacter sp. AU07
ABSTRACT The purpose of this study was to isolate, purify and optimize the production conditions of an organic solvent tolerant and thermostable lipase from Acinetobacter sp. AU07 isolated from distillery waste. The lipase production was optimized by response surface methodology, and a maximum production of 14.5 U/mL was observed at 30 ºC and pH 7, using a
Braz. J. Microbiol.. Publicado em: 2016-09
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9. Surface response methodology for the optimization of lipase production under submerged fermentation by filamentous fungi
Abstract A Plackett–Burman Factorial Design of 16 experiments was conducted to assess the influence of nine factors on the production of lipases by filamentous fungi. The factors investigated were bran type (used as the main carbon source), nitrogen source, nitrogen source concentration, inducer, inducer concentration, fungal strain (Aspergillus niger or A
Braz. J. Microbiol.. Publicado em: 2016-06
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10. First description of Candida nivariensis in Brazil: antifungal susceptibility profile and potential virulence attributes
This study evaluated the antifungal susceptibility profile and the production of potential virulence attributes in a clinical strain of Candida nivariensis for the first time in Brazil, as identified by sequencing the internal transcribed spacer (ITS)1-5.8S-ITS2 region and D1/D2 domains of the 28S of the rDNA. For comparative purposes, tests were also perfor
Mem. Inst. Oswaldo Cruz. Publicado em: 2016-01
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11. PERFORMANCE OF LOOFA-IMMOBILIZED Rhizopus oryzae IN THE ENZYMATIC PRODUCTION OF BIODIESEL WITH USE OF OLEIC ACID IN n-HEXANE MEDIUM
AbstractThe performance of loofa-immobilized Rhizopus oryzae (as a whole-cell biocatalyst) in the synthesis of methyl oleate was evaluated using oleic acid as a model substrate. The activities of the cell-bound lipase in terms of the esterification and hydrolysis reactions were found to be higher for the immobilized cells as compared with those of the free c
Braz. J. Chem. Eng.. Publicado em: 2015-06
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12. Halotolerant bacteria in the São Paulo Zoo composting process and their hydrolases and bioproducts
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
Braz. J. Microbiol.. Publicado em: 2015-06