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Critical process parameters optimization for hyperthermostable β amylase production by Bacillus subtilis DJ5 using response surface methodology - doi: 10.4025/actascibiolsci.v36i1.17427 3
Poddar, Abhijit; Bidhannagar College (govt. of West bengal); Ghara, Tushar Kanti; Bidhannagar College (govt. of West bengal); Jana, Subhas Chandra; Bidhannagar College (govt. of West bengal).
The combined effects of significant physical and chemical factors affect hyperthermostable β amylase production under submerged fermentation by Bacillus subtilis DJ5. The above was studied using the experimental design and response surface methodology. A 23 full-factorial central composite design was chosen to analyze interactions among three factors i.e. substrate concentration, medium pH and incubation temperature. The experimental data were fitted into a polynomial model for the yield of enzyme and an optimum level was arrived at with optimized conditions. Solving the coded values using Excel equation function indicated that maximum enzyme production is possible at a substrate concentration of 7.07 mg mL-1, pH 6.622 and temperature of 35.435°C. Such...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Microbiology central composite design; Response surface plot; Contour plot; Submerged fermentation; Thermozymes Microbiology.
Ano: 2013 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/17427
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High cellulolytic activities in filamentous fungi isolated from an extreme oligotrophic subterranean environment (Catão cave) in Brazil 42
PAULA,CAIO C.P. DE; MONTOYA,QUIMI V.; MEIRELLES,LUCAS A.; FARINAS,CRISTIANE S.; RODRIGUES,ANDRÉ; SELEGHIM,MIRNA H.R..
Abstract Abstract: Isolation and screening of new fungal strains from extreme and understudied environments, such as caves, is a promising approach to find higher yields enzyme producers. Cellulolytic fungal strains isolated from a Brazilian cave were evaluated for their enzymatic production after submerged (SmF) and solid-state fermentation (SSF). After SmF, three strains were selected for their high enzymatic activities: Aspergillus ustus for endoglucanase (4.76 U/mg), Talaromyces bruneus for β-glucosidase (11.71 U/mg) and Aspergillus sp. (CBMAI 1926) for total cellulase (1.70 U/mg). After SSF, these strains, showed better yields compared to the reference strain Aspergillus niger 3T5B8. Aspergillus sp. (CBMAI 1926) stood out as a new species that...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cellulases; Fungu’s cave; Solid state fermentation; Submerged fermentation; Subterranean environment.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000500601
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Localization and partial characterization of thermostable glucoamylase produced by newly isolated Thermomyces lanuginosus TO3 in submerged fermentation 52
Gonçalves,Aline Zorzetto Lopes; Carvalho,Ana Flávia Azevedo; Silva,Roberto da; Gomes,Eleni.
Thermophilic Thermomyces lanuginosus strain TO3 was isolated from compost pile samples and was used for its ability to produce considerable glucoamylase activity when growing in liquid medium at 45ºC with starch as the sole carbon source. Enzyme productivity was high in submerged fermentation (SmF) with maximum activity of 13 U/mL after 168 h of fermentation. Higher quantities of glucose were released when the substrate for enzyme was soluble starch than maltose or maltooligosaccharides were used. The distribution of glucoamylase between the extracellular and cell-associated fractions varied according to fermentation time. Glucoamylase produced from T. lanuginosus TO3 had optimum activity at 65 ºC and good thermostability in the absence of substrate, with...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Glucoamylase; Submerged fermentation; Thermomyces lanuginosus.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000400024
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Microbial production of citric acid 52
Vandenberghe,Luciana P. S; Soccol,Carlos R; Pandey,Ashok; Lebeault,Jean-Michel.
Citric acid is the most important organic acid produced in tonnage and is extensively used in food and pharmaceutical industries. It is produced mainly by submerged fermentation using Aspergillus niger or Candida sp. from different sources of carbohydrates, such as molasses and starch based media. However, other fermentation techniques, e.g. solid state fermentation and surface fermentation, and alternative sources of carbon such as agro-industrial residues have been intensively studied showing great perspective to its production. This paper reviews recent developments on citric acid production by presenting a brief summary of the subject, describing micro-organisms, production techniques, and substrates, etc.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Citric acid; Aspergillus niger; Submerged fermentation; Solid state fermentation; Substrates.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000300001
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Optimization of fermentation conditions for cellulases production by Bacillus licheniformis MVS1 and Bacillus sp. MVS3 isolated from Indian hot spring 52
Acharya,Somen; Chaudhary,Anita.
The aim of this work was to study the effect of some nutritional and environmental factors on the production of cellulases, in particular endoglucanase (CMCase) and exoglucanases (FPase) from Bacillus licheniformis MVS1 and Bacillus sp. MVS3 isolated from an Indian hot spring. The characterization study indicated that the optimum pH and temperature value was 6.5 to 7.0 and 50-55°C, respectively. Maximum cellulases production by both the isolates was detected after 60 h incubation period using wheat and rice straw. The combination of inorganic and organic nitrogen source was suitable for cellulases production. Overall, FPase production was much higher than CMCase production by both of the strains. Between the two thermophiles, the cellulolytic activity was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Isolation; Thermophiles; Submerged fermentation; Parameter optimization; Cellulases; Hot spring.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000400003
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Development of an L-Lysine Enriched Bran for Animal Nutrition via Submerged Fermentation by Corynebacterium glutamicum using Agroindustrial Substrates 52
Letti Junior,Luiz Alberto; Letti,Gilberto Vinícius Melo; Soccol,Carlos Ricardo.
L-Lysine is an essential aminoacid added as supplement for animal feed. The aim of this work was to produce an L-Lysine enriched bran using Brazilian agroindustrial byproducts. Both the raw material costs and purification steps were minimized. Firstly, medium composition for the growth of Corynebacterium glutamicum ATCC 21799 was optimized targeting enhanced L-Lysine production - salt, vitamins and nitrogen sources concentrations were tested and selected. Next, UV mutant strains were generated and the best producers were used in formulated media using sugarcane molasses. It was reached a production of 9.3 g/L of L-Lysine with the optimized formulated media. This L-Lyisne rich broth was then impregnated and cyclically reimpregnated in pre-treated solid...
Tipo: Info:eu-repo/semantics/article Palavras-chave: L-Lysine; Corynebacterium glutamicum; Submerged fermentation; Animal nutrition; Enriched bran.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100505
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Xylanase production by a thermo-tolerant Bacillus species under solid-state and submerged fermentation 52
Gupta,Uma; Kar,Rita.
Effects of xylose on xylanase production by a thermophilic Bacillus sp showed diverse patterns on corn cob (CC) and wheat bran (WB) as sole carbon sources in solid- state fermentation (SSF) and submerged fermentation (SmF). Supplementation of these media with either mineral salt solution (MSS) or yeast extract peptone (YEP) also exerted variable effects. While under SSF, xylose stimulated xylanase synthesis by 44.01%, on wheat bran supplemented with MSS, it decreased the enzyme activity by 12.89% with YEP supplementation. In SmF, however the enzyme synthesis was stimulated by xylose on supplementation with both MSS and YEP by 41.38% and 27.47%, respectively. On corn cob under SSF, xylose repression was significant both with MSS (26.92%) and YEP (23.90%)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Xylanase production; Thermo-tolerant Bacillus species; Xylose induction and repression; Corn cob; Wheat bran; Solid- state; Submerged fermentation.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000600007
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Microbial rennet produced by Mucor miehei in solid-state and submerged fermentation 52
Silveira,Guilherme Garcia da; Oliveira,Gustavo Monteiro de; Ribeiro,Eloizio Julio; Monti,Rubens; Contiero,Jonas.
The aim of this work was to study the effect of carbon and nitrogen sources in submerged fermentation, and the casein effect on solid-state fermentation on rennin production by Mucor miehei. Biomass peaks reached 6.7; 8.1 and 8 g/L and enzymatic production peaks of 1,066; 857 and 480 Soxhlet Units (S.U.) for glucose concentration of 18; 25 and 35 g/L respectively. Flasks with baffles showed biomass peaks of 6.7; 8.3 and 10 g/L and enzyme activity peaks of 648; 279 and 300 S.U. for the same glucose concentration. The values of 923 and 667 S.U. were obtained when corn steep liquor and Proflo (Cottonseed Nutrients from Traders ®) were used. In SSF system the enzymatic activities were 414, 264 and 167 S.U., when using HCl 0.2 N, 0.3 N and 0.4 N respectively....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mucor miehei; Rennin; Clotting activity; Casein; Solid-state fermentation; Submerged fermentation.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000800009
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Lipase Production by Aspergillus niger C by Submerged Fermentation 52
Lima,Laisy Garcia Ribeiro; Gonçalves,Márcia Monteiro Machado; Couri,Sonia; Melo,Verônica Ferreira; Sant’Ana,Gizele Cardoso Fontes; Costa,Antônio Carlos Augusto da.
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 variables: sucrose, ammonium sulphate, soybean oil, yeast extract concentration and pH. After the selection of the variables that significantly influenced the lipase production, a central composite rotational design 22 (CCRD) was used, aiming to find the most favorable operational conditions. The selected assay condition (15.0 g.L-1 sucrose, 4.0 g.L-1 ammonium sulphate, 4.0 g.L-1 soybean oil and 1.0 g.L-1...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lipases; Submerged fermentation; Aspergillus nige; Experimental design..
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100214
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Xylanase production by Streptomyces viridosporus T7A in submerged and solid-state fermentation using agro-industrial residues 52
Alberton,Luiz Romulo; Vandenberghe,Luciana Porto de Souza; Assmann,Ricardo; Fendrich,Ricardo Cancio; Rodriguéz-León,José; Soccol,Carlos Ricardo.
The study of xylanase production was conducted by Streptomyces viridosporus T7A in submerged (SmF) and solid-state fermentation (SSF), using agro-industrial residues and sub-products. Napier grass, sugarcane bagasse and soybean bran were used as carbon source, substrate/support, and nitrogen source, respectively. In SmF, Napier grass (1% v/w) supplemented with soybean bran, hydroxyethylcellulose and B complex vitamins were used. Soybean bran (1.5 % w/v), B complex vitamins (0.1%), and hydroxyethilcellulose (0.15%) led to an increase in xylanase production (23.41 U/mL). In SSF, the effects of the following parameters were studied: substrate composition (sugarcane bagasse, Napier grass and soybean bran), initial moisture, and inoculum rate. In SSF, the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Streptomyces; Xylanase; Submerged fermentation; Solid-state agro-industrial fermentation; Residues.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000700022
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Comparative study of a new alkaline L-methioninase production by Aspergillus ustus AUMC 10151 in submerged and solid-state fermentation 52
Abu-Tahon,Medhat Ahmed; Isaac,George Saad.
Twenty four fungal species were screened for their ability to produce alkaline L-methioninase on methionine-glucose liquid medium. Aspergillus ustus AUMC 10151 displayed the highest yield of enzyme (10.8 U/mg protein), followed by A. ochraceus and Fusarium proliferatum. Upon optimization of the submerged fermentation (SmF)conditions, the maximum enzyme yield (18.23 U/mg protein) was obtained on a medium containing L-methionine (0.5%), sucrose (0.95%), KH2PO4 (0.1%) and 175 rpm. Seven agro-industrial by-products were screened as substrates for L-methioninase production under solid-state fermentation (SSF). Wheat bran resulted 38.1 U/mg protein, followed by rice bran (27.6 U/mg protein) and soya bean meal (26.6 U/mg protein). Maximum alkaline L-methioninase...
Tipo: Info:eu-repo/semantics/article Palavras-chave: L-methioninase; Aspergillus ustus; Submerged fermentation; Solid state fermentation; Wheat bran.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100502
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Thermostable saccharogenic amylase produced under submerged fermentation by filamentous fungus Penicillium purpurogenum 58
Silva,Tony Márcio; Oliveira,Maurício de; Somera,Alexandre Favarin; Jorge,João Atílio; Terenzi,Héctor Francico; Polizeli,Maria de Lourdes T. M; Guimarães,Luis Henrique Souza.
The effect of several nutritional and environmental parameters on Penicillium purpurogenum growth and sacharogenic amylase production was analyzed. High enzyme levels (68.2 U mg-1) were obtained with Khanna medium at initial pH 6.0, incubated at 30ºC for 144 hours. The optimum pH and temperature activities were 5.0 and 65ºC, respectively. The enzyme presented a half-life (t50) of 60 min, at 65ºC. Only glucose was detected after 24 hours of reaction using soluble starch as substrate.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amylase; Penicillium purpurogenum; Submerged fermentation.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000300035
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Production of cellulase by Aspergillus niger under submerged and solid state fermentation using coir waste as a substrate 58
Mrudula,Soma; Murugammal,Rangasamy.
Aspergillus niger was used for cellulase production in submerged (SmF) and solid state fermentation (SSF). The maximum production of cellulase was obtained after 72 h of incubation in SSF and 96 h in Smf. The CMCase and FPase activities recorded in SSF were 8.89 and 3.56 U per g of dry mycelial bran (DBM), respectively. Where as in Smf the CMase & FPase activities were found to be 3.29 and 2.3 U per ml culture broth, respectively. The productivity of extracellular cellulase in SSF was 14.6 fold higher than in SmF. The physical and nutritional parameters of fermentation like pH, temperature, substrate, carbon and nitrogen sources were optimized. The optimal conditions for maximum biosynthesis of cellulase by A. niger were shown to be at pH 6,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aspergillus niger; Coir waste; Cellulase; Submerged fermentation; Solid-state fermentation.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000300033
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'Synthetic lipase' production from a newly isolated Sporidiobolus pararoseus strain by submerged fermentation 58
Smaniotto,Alessandra; Skovronski,Aline; Rigo,Elisandra; Tsai,Siu Mui; Durrer,Ademir; Foltran,Lillian Liva; Di Luccio,Marco; Oliveira,J. Vladimir; Oliveira,Débora de; Treichel,Helen.
The lipase produced by a newly isolate Sporidiobolus pararoseus strain has potential catalysis ability for esterification reactions. In order to improve its synthetic activity, this work aimed at optimizing 'synthetic lipase' production by submerged fermentation of a conventional media based on peptone, yeast extract, NaCl and olive oil using experimental design technique. According to the results obtained in the first experimental design (2(4-1)), yeast extract and NaCl concentrations were tested to further optimization by response surface methodology. The maximum 'synthetic lipase' activity obtained was 26.9 U/mL in the optimized media (5.0, 6.8, 7.0 and 1.0% (wt/v) of peptone, yeast extract, NaCl and olive oil, respectively), representing a 6.36-fold...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sporidiobolus pararoseus; Experimental design; 'synthetic lipase'; Submerged fermentation.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000400033
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Kinetics of high-Level of ß-glucosidase production by a 2-deoxyglucose-resistant mutant of Humicola lanuginosa in submerged fermentation 58
Bokhari,Syed Ali Imran; Latif,Farooq; Rajoka,Muhammad Ibrahim.
A 2-deoxyglucose-resistant mutant (M7) of Humicola lanuginosa was obtained by exposing conidia to γ-rays and permitting expression in broth containing 0.6% 2-deoxyglucose (DG) and cellobiose (1%) before plating on DG esculin-ferric ammonium citrate agar medium from which colonies showing faster and bigger blackening zones were selected. Kinetic parameters for enhanced ß-glucosidase (BGL) synthesis by M7 were achieved when corncobs acted as the carbon source. The combination between corncobs and corn steep liquor was the best to support higher values of all product formation kinetic parameters. Effect of temperature on the kinetic and thermodynamic attributes of BGL production equilibrium in the wild organismand M7was studied using batch process at eight...
Tipo: Info:eu-repo/semantics/article Palavras-chave: SS-Glucosidase; Enthalpy; Entropy; Hemicellulose; Kinetics; Regulation; Submerged fermentation.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000400024
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Cashew apple juice as microbial cultivation medium for non-immunogenic hyaluronic acid production 58
Oliveira,Adriano H.; Ogrodowski,Cristiane C.; Macedo,André C. de; Santana,Maria Helena A.; Gonçalves,Luciana R.B..
In this work, natural cashew apple juice was used as cultivation medium as an alternative to substitute brain heart infusion medium. The effect of aeration and juice supplementation with yeast extract on the production of hyaluronic acid in batch fermentation was also investigated. Similar levels of cell mass were obtained in inoculum using cashew apple juice supplemented with yeast extract or the conventional brain heart infusion medium. Fermentation in Erlenmeyer flasks produced low biomass and hyaluronic acid concentrations. The hyaluronic acid concentration and viscosity increased from 0.15 g/L and 3.87 cP (no aeration or medium supplementation) to 1.76 g/L and 107 cP, when aeration (2 vvm) and 60 g/L of yeast extract were used. The results suggest the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hyaluronic acid; Cashew apple juice; Submerged fermentation.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400011
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Production of mycelial biomass by the Amazonian edible mushroom Pleurotus albidus 58
Kirsch,Larissa de Souza; Macedo,Ana Júlia Porto de; Teixeira,Maria Francisca Simas.
ABSTRACT Edible mushroom species are considered as an adequate source of food in a healthy diet due to high content of protein, fiber, vitamins, and a variety of minerals. The representatives of Pleurotus genus are characterized by distinct gastronomic, nutritional, and medicinal properties among the edible mushrooms commercialized worldwide. In the present study, the growth of mycelial biomass of Pleurotus albidus cultivated in submerged fermentation was evaluated. Saccharose, fructose, and maltose were the three main carbon sources for mycelial biomass formation with corresponding yields of 7.28 g L−1, 7.07 g L−1, and 6.99 g L−1. Inorganic nitrogen sources did not stimulate growth and the optimal yield was significantly higher with yeast extract (7.98 g...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pleurotus albidus; Submerged fermentation; Mycelial biomass; Factorial design.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000300658
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Brewer's spent grain and corn steep liquor as alternative culture medium substrates for proteinase production by Streptomyces malaysiensis AMT-3 58
Nascimento,Rodrigo Pires do; Alves Junior,Nelson; Coelho,Rosalie Reed Rodrigues.
Brewer's spent grain and corn steep liquor or yeast extract were used as the sole organic forms for proteinase production by Streptomyces malaysiensis in submerged fermentation. The influence of the C and N concentrations, as well as the incubation periods, were assessed. Eight proteolytic bands were detected through gelatin-gel-electrophoresis in the various extracts obtained from the different media and after different incubation periods, with apparent molecular masses of 20, 35, 43, 50, 70, 100, 116 and 212 kDa. The results obtained suggest an opportunity for exploring this alternative strategy for proteinases production by actinomycetes, using BSG and CSL as economically feasible substrates.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Streptomyces malaysiensis; Brewer's spent grains; Corn steep liquor; Proteinases; Submerged fermentation.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000400020
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Production of cellulase-free xylanase by Trichoderma reesei SAF3 58
Kar,Sanjay; Mandal,Asish; Mohapatra,Pradeep K. das; Mondal,Keshab C.; Pati,Bikash R..
A xylanase producing fungi has been isolated from soil and identified as Trichoderma reesei SAF3. Maximum growth of the organism was found at 48 h under submerged condition in xylan containing enriched medium, whereas highest enzyme production (4.75U/mL) was recorded at 72 h. No detectable cellulase activity was noted during whole cultivation period. The partially purified enzyme hydrolyzed xylan into xylopentose and xylose. All these properties of xylanase highlighten its promising uses in industrial scale.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Xylanase; Trichoderma reesei; Submerged fermentation.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000400011
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Production and properties of the cellulase-free xylanase from Thermomyces lanuginosus IOC-4145 58
Damaso,Mônica Caramez Triches; Andrade,Carolina M.M. Carvalho; Pereira Jr,Nei.
In recent years, xylanases have expanded their use in many processing industries, such as pulp and paper, food and textile. Thermomyces lanuginosus IOC-4145 was able to produce a very high level of cellulase-free xylanase in shaken cultures using corncob as substrate (500 U/mL). An optimization of the medium composition in submerged fermentation was carried out aiming at a low cost medium composition for enzyme production. Statistical experiment design was employed for this purpose, pointing out corncob as the most important parameter, which affects enzyme production. Additionally, the influence of several chemicals on xylanase activity was investigated in the crude extract. A slight stimulation of the enzyme (5-15%) was achieved with NaCl and urea, both...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Xylanases; Thermomyces lanuginosus; Corncob; Submerged fermentation; Medium optimization.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822002000400011
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