Consulta: subjectFacets:"Response surface method"
Registros recuperados: 5
Data/hora: 09/06/2024 10:35:50

Optimization of culture conditions for exopolysaccharides production in Rhizobium sp. using the response surface method
Provedor de dados: 69
Autores: Pereira Duta,Flávia; Pessôa de França,Francisca; de Almeida Lopes,Léa Maria.
The combined effects of the processing parameters for exopolysaccharides production by Rhizobium sp. was studied using the experimental design and response surface methodology. The experiments were carried out using a fermenter with 20 L capacity, as the reactor. All processing parameters were online monitored. The temperature [(30 &amp;plusmn; 1)&amp;ordm;C] and pH value (7.0 &amp;plusmn; 0.1) were kept constant throughout the experimental time. As statistical tools, a complete 2³ factorial planning with central point and response surface were used to study the interactions among three relevant variables of the fermentation process: calcium carbonate concentration, aeration and agitation. The processing parameters setup for reaching a maximum response for...
Tipo: Journal article
Palavras-chave: Exopolysaccharides; Experimental design; Response surface method; Rhizobium sp.
Ano: 2006
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582006000400007

Application of statistical experimental methods to optimize medium for exopolymer production by newly isolated Halobacterium sp. SM5
Provedor de dados: 69
Autores: Lungmann,Patcharee; Choorit,Wanna; Prasertsan,Poonsuk.
The study investigated on medium optimization for production of exopolymer by a newly isolated bacterium, Halobacterium sp. SM5, using the mixture design and response surface method. The mixture experiment was designed by setting five parameters at the lowest and highest of concentrations: pseudo components design containing 0.15-0.25 glucose, 0.15-0.25 yeast extract, 0.35-0.45 MgSO4·7H2O, 0.1-0.2 vitamin casamino acid and 0.02-0.06 KCl. The results of the mixture design revealed that the effect of nutrients or elements on the exopolymer produced by the strain SM5 were in the order of MgSO4·7H2O &gt; yeast extract &gt; vitamin casamino acid &gt; KCl &gt; glucose, respectively. The suitable medium recipe for enhancement the exopolymer production was 7.43...
Tipo: Journal article
Palavras-chave: Exopolymer; Halophilic bacteria; Medium optimization; Mixture design; Response surface method.
Ano: 2007
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582007000100001

Application of the Response Surface Method in the Analysis of Ohmic Heating Process Performance in Sour Orange Juice Processing
Provedor de dados: 111
Autores: Azadbakht, Mohsen; Vahedi Torshizi, Mohammad; Kashaninejad, Mahdi.
Three voltage gradients (8.38, 10.83, and 13.33 V cm-1) and three weight loss percentages (10, 20, and 30 percent) were examined; also the system performance coefficient, input current, heating process duration, power consumption and electrical conductivity investigated. The response surface method was also used for modeling s and optimization. For the response surface method, weight loss percentage and voltage gradient were selected as independent variables; and factors  system performance coefficient, heating process duration, input current, power consumption and electrical conductivity were selected as responses. According to results, all obtained models were significant for responses factors, but the voltage gradient and weight loss percentage were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sour orange juice; Ohmic method; Response surface method; Modeling.
Ano: 2020
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6057

High-temperature ethanol production using thermotolerant yeast newly isolated from Greater Mekong Subregion
Provedor de dados: 58
Autores: Techaparin,Atiya; Thanonkeo,Pornthap; Klanrit,Preekamol.
Abstract The application of high-potential thermotolerant yeasts is a key factor for successful ethanol production at high temperatures. Two hundred and thirty-four yeast isolates from Greater Mekong Subregion (GMS) countries, i.e., Thailand, The Lao People's Democratic Republic (Lao PDR) and Vietnam were obtained. Five thermotolerant yeasts, designated Saccharomyces cerevisiae KKU-VN8, KKU-VN20, and KKU-VN27, Pichia kudriavzevii KKU-TH33 and P. kudriavzevii KKU-TH43, demonstrated high temperature and ethanol tolerance levels up to 45 °C and 13% (v/v), respectively. All five strains produced higher ethanol concentrations and exhibited greater productivities and yields than the industrial strain S. cerevisiae TISTR5606 during high-temperature fermentation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Thermotolerant yeast; Box-Behnken experimental design; Response surface method; Ethanol production; Sweet sorghum juice (SSJ).
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300461

Optimization of nutrition factors on chitinase production from a newly isolated Chitiolyticbacter meiyuanensis SYBC-H1
Provedor de dados: 58
Autores: Hao,Zhikui; Cai,Yujie; Liao,Xiangru; Zhang,Xiaoli; Fang,Zhiyou; Zhang,Dabing.
The present study reports statistical medial optimization for chitinase production by a novel bacterial strain isolated from soil recently, which the name Chitinolyticbacter meiyuanensis SYBC-H1 is proposed. A sequential statistical methodology comprising of Plackett-Burman and response surface methodology (RSM) was applied to enhance the fermentative production of chitinase, in which inulin was firstly used as an effective carbon source. As a result, maximum chitinase activity of 5.17 U/mL was obtained in the optimized medium, which was 15.5-fold higher than that in the basal medium. The triplicate verification experiments were performed under the optimized nutrients levels which indicated that it well agreed with the predicted value.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chitinase; Medium optimization; Response surface method; Inulin; Chitinolyticbacter meiyuanensis SYBC-H1.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000100019