Plackett Burman Design
Mostrando 13-24 de 46 artigos, teses e dissertações.
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13. Improving Yield of 1,3-Diglyceride by Whole-Cell Lipase from A. Niger GZUF36 Catalyzed Glycerolysis via Medium Optimization
1,3-Diglyceride (1,3-DG) has attracted considerable attention as a healthful food oil component. In this study, we reported a novel method to synthesis of 1,3-DG via glycerolysis of triglyceride (TG) catalyzed by whole-cell lipase from a new isolated strain, Aspergillus niger GZUF36. The glycerolysis products include major diglyceride and minor monoglyceride
J. Braz. Chem. Soc.. Publicado em: 2015-02
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14. Experimental Design Applied to the Optimization and Partial Characterization of Pectin Liase from a Newly Isolated Penicillium brasilianum
Penicillium brasilianum was previously isolated from tea and identified by molecular biology technique. A Plackett-Burman design, followed by a complete second order design was used for the screening of most important factors and to maximize the pectin liase (PMGL) activity, respectively. The maximum PMGL activity by P. brasilianum achieved was 9.0 U/mL afte
Braz. arch. biol. technol.. Publicado em: 2014-12
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15. Improved 1-Deoxynojirimycin (DNJ) production in mulberry leaves fermented by microorganism
DNJ, an inhibitor of α-glucosidase, is used to suppress the elevation of postprandial hyperglycemia. In this study, we focus on screening an appropriate microorganism for performing fermentation to improve DNJ content in mulberry leaf. Results showed that Ganoderma lucidum was selected from 8 species and shown to be the most effective in improvement of DNJ
Braz. J. Microbiol.. Publicado em: 2014-06
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16. Optimization of lipids production by Cryptococcus laurentii 11 using cheese whey with molasses
This study aimed the optimization of culture condition and composition for production of Cryptococcus laurentii 11 biomass and lipids in cheese whey medium supplemented with sugarcane molasses. The optimization of pH, fermentation time, and molasses concentration according to a full factorial statistical experimental design was followed by a Plackett-Burman
Braz. J. Microbiol.. Publicado em: 2014-06
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17. Use of Plackett-Burman design for rapid screening of nitrogen and carbon sources for the production of lipase in solid state fermentation by Yarrowia lipolytica from mustard oil cake (Brassica napus)
Mustard oil cake (Brassica napus), the residue obtained after extraction of mustard oil from mustard oil seeds, was investigated for the production of lipase under solid state fermentation (SSF) using the marine yeast Yarrowia lipolytica NCIM 3589. Process parameters such as incubation time, biomass concentration, initial moisture content, carbon source conc
Braz. J. Microbiol.. Publicado em: 10/01/2014
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18. Optimization of nutritional and non-nutritional factors involved for production of antimicrobial compounds from Lactobacillus pentosus SJ65 using response surface methodology
Bacteriocins from lactic acid bacteria are ribosomal synthesized antibacterial proteins/ peptides having wide range of applications. Lactobacillus pentosus SJ65, isolated from fermented Uttapam batter (used to prepare south Indian pan cake), produces bacteriocin having a broad spectrum of activity against pathogens. Optimization studies are of utmost importa
Braz. J. Microbiol.. Publicado em: 2014
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19. Optimization of zofimarin production by an endophytic fungus, Xylaria sp. Acra L38
To optimize the medium for high zofimarin production, sucrose maltose, glucose, tryptone and peptone were used in an orthogonal array design experiment, where the highest value of zofimarin produced was 25.6 µg/mL. This value was about 3 times higher than that obtained with Czapek yeast extract (CzYE) culture medium. A study with Plackett-Burman design show
Braz. J. Microbiol.. Publicado em: 2014
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20. Application of statistical experimental design for optimisation of bioinsecticides production by sporeless Bacillus thuringiensis strain on cheap medium
In order to overproduce bioinsecticides production by a sporeless Bacillus thuringiensis strain, an optimal composition of a cheap medium was defined using a response surface methodology. In a first step, a Plackett-Burman design used to evaluate the effects of eight medium components on delta-endotoxin production showed that starch, soya bean and sodium chl
Braz. J. Microbiol.. Publicado em: 2013-09
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21. Optimizing a culture medium for biomass and phenolic compounds production using Ganoderma lucidum
The present work was aimed at optimizing a culture medium for biomass production and phenolic compounds by using Ganoderma lucidum. The culture was optimized in two stages; a Plackett-Burman design was used in the first one for identifying key components in the medium and a central composite design was used in the second one for optimizing their concentratio
Braz. J. Microbiol.. Publicado em: 17/05/2013
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22. Statistical optimization of medium compositions for chitosanase production by a newly isolated Streptomyces albus
The nutritional medium compositions required for chitosanase production by Streptomyces albus YT2 were optimized, and the strain was isolated from the coastal soil of Bohai Sea. Plackett-Burman design was applied to evaluate the effect of different medium compositions obtained by one-factor-at-a-time experiments. Glucose, peptone and MgSO4 were found to infl
Braz. J. Chem. Eng.. Publicado em: 2012-12
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23. Medium optimization of protease production by Brevibacterium linens DSM 20158, using statistical approach
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
Braz. J. Microbiol.. Publicado em: 2012-09
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24. Statistical evaluation of nutritional components impacting phycocyanin production in Synechocystis SP
Alkaliphilic cyanobacterial cultures were isolated from Lonar lake (MS, India). Among the set of cultures, Synechocystis sp, was studied for phycocyanin production. A maximum yield was obtained in BG-11 medium at optimized conditions (pH 10 and 16 h light). In order to increase the phycocyanin yield media optimization based on the eight media components a Pl
Brazilian Journal of Microbiology. Publicado em: 2012-03