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Abdel Wahab WA, Esawy MA. Statistical, physicochemical, and thermodynamic profiles of chitinase production from local agro-industrial wastes employing the honey isolate Aspergillus niger EM77. Heliyon 2022; 8:e10869. [PMID: 36247152 PMCID: PMC9561733 DOI: 10.1016/j.heliyon.2022.e10869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 08/27/2022] [Accepted: 09/27/2022] [Indexed: 11/06/2022] Open
Abstract
Enzyme synthesis from local wastes has a lot of potential because it eliminates the problem of waste accumulating in conjugation while also cutting the cost of these useful products. Plackett-Burman (PBD) and central composite designs (CCD) were used to optimize the manufacturing process utilizing the honey isolate Aspergillus niger EM77, resulting in a 60-fold increase in enzyme productivity using a group of wastes comprising wheat, rice straw, and sawdust. The enzyme had its optimum activity at 60 °C, pH 5, and had high thermo-stability at 60 °C, with Km and Vmax of 0.8 mg mL−1 and 2083.33 μmol mL−1 min−1 respectively. The activation (Ea) and deactivation (Ed) energies of chitinase were 2.78 and 174.46 kJ mol−1, respectively, with the thermodynamic constants ΔH° and ΔG° ensuring enzyme stability. As a result, Aspergillus niger EM77 chitinase has the efficiency to meet the global market demand for chitinase enzyme while also providing a significantly lower price than what is now available on the websites of specialist international companies. The production process is almost costless because it is based primarily on waste and contains traces of minerals.
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Singh RV, Sambyal K, Negi A, Sonwani S, Mahajan R. Chitinases production: A robust enzyme and its industrial applications. BIOCATAL BIOTRANSFOR 2021. [DOI: 10.1080/10242422.2021.1883004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
| | - Krishika Sambyal
- University Institute of Biotechnology, Chandigarh University, Gharuan, India
| | - Anjali Negi
- University Institute of Biotechnology, Chandigarh University, Gharuan, India
| | - Shubham Sonwani
- Department of Biosciences, Christian Eminent College, Indore, India
| | - Ritika Mahajan
- Department of Microbiology, School of Sciences, JAIN (Deemed-to-be University), Bengaluru, India
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Tamadoni Jahromi S, Barzkar N. Marine bacterial chitinase as sources of energy, eco-friendly agent, and industrial biocatalyst. Int J Biol Macromol 2018; 120:2147-2154. [DOI: 10.1016/j.ijbiomac.2018.09.083] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 08/16/2018] [Accepted: 09/13/2018] [Indexed: 11/25/2022]
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Enhancement of Exochitinase Production by Bacillus licheniformis AT6 Strain and Improvement of N-Acetylglucosamine Production. Appl Biochem Biotechnol 2016; 181:650-666. [PMID: 27639392 DOI: 10.1007/s12010-016-2239-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Accepted: 09/05/2016] [Indexed: 10/21/2022]
Abstract
A strain producing chitinase, isolated from potato stem tissue, was identified as Bacillus licheniformis by biochemical properties and 16S RNA sequence analysis. Statistical experimental designs were used to optimize nine independent variables for chitinase production by B. licheniformis AT6 strain in submerged fermentation. Using Plackett-Burman design, (NH4)2SO4, MgSO4.7H2O, colloidal chitin, MnCl2 2H2O, and temperature were found to influence chitinase production significantly. According to Box-Behnken response surface methodology, the optimal fermentation conditions allowing maximum chitinase production were (in gram per liter): (NH4)2SO4, 7; K2HPO4, 1; NaCl, 1; MgSO4.7H2O, 0.1; yeast extract, 0.5; colloidal chitin, 7.5; MnCl2.2H2O, 0.2; temperature 35 °C; pH medium 7. The optimization strategy led to a 10-fold increase in chitinase activity (505.26 ± 22.223 mU/mL versus 50.35 ± 19.62 mU/mL for control basal medium). A major protein band with a molecular weight of 61.9 kDa corresponding to chitinase activity was clearly detected under optimized conditions. Chitinase activity produced in optimized medium mainly releases N-acetyl glucosamine (GlcNAc) monomer from colloidal chitin. This enzyme also acts as an exochitinase with β-N-acetylglucosaminidase. These results suggest that B. licheniformis AT6 secreting exochitinase is highly efficient in GlcNAc production which could in turn be envisaged as a therapeutic agent or as a conservator against the alteration of several ailments.
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Aliabadi N, Aminzadeh S, Karkhane AA, Haghbeen K. Thermostable chitinase from Cohnella sp. A01: isolation and product optimization. Braz J Microbiol 2016; 47:931-940. [PMID: 27528085 PMCID: PMC5052389 DOI: 10.1016/j.bjm.2016.07.009] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Accepted: 04/04/2016] [Indexed: 11/28/2022] Open
Abstract
Twelve bacterial strains isolated from shrimp farming ponds were screened for their growth activity on chitin as the sole carbon source. The highly chitinolytic bacterial strain was detected by qualitative cup plate assay and tentatively identified to be Cohnella sp. A01 based on 16S rDNA sequencing and by matching the key morphological, physiological, and biochemical characteristics. The cultivation of Cohnella sp. A01 in the suitable liquid medium resulted in the production of high levels of enzyme. The colloidal chitin, peptone, and K2HPO4 represented the best carbon, nitrogen, and phosphorus sources, respectively. Enzyme production by Cohnella sp. A01 was optimized by the Taguchi method. Our results demonstrated that inoculation amount and temperature of incubation were the most significant factors influencing chitinase production. From the tested values, the best pH/temperature was obtained at pH 5 and 70°C, with Km and Vmax values of chitinase to be 5.6mg/mL and 0.87μmol/min, respectively. Ag+, Co2+, iodoacetamide, and iodoacetic acid inhibited the enzyme activity, whereas Mn2+, Cu2+, Tweens (20 and 80), Triton X-100, and EDTA increased the same. In addition, the study of the morphological alteration of chitin treated by enzyme by SEM revealed cracks and pores on the chitin surface, indicating a potential application of this enzyme in several industries.
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Affiliation(s)
- Nasrin Aliabadi
- National Institute of Genetic Engineering and Biotechnology, Department of Industrial and Environmental Biotechnology, Bioprocess Engineering Group, Tehran, Iran
| | - Saeed Aminzadeh
- National Institute of Genetic Engineering and Biotechnology, Department of Industrial and Environmental Biotechnology, Bioprocess Engineering Group, Tehran, Iran.
| | - Ali Asghar Karkhane
- National Institute of Genetic Engineering and Biotechnology, Department of Industrial and Environmental Biotechnology, Bioprocess Engineering Group, Tehran, Iran
| | - Kamahldin Haghbeen
- National Institute of Genetic Engineering and Biotechnology, Department of Industrial and Environmental Biotechnology, Bioprocess Engineering Group, Tehran, Iran
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Utilization of Chitinaceous Wastes for the Production of Chitinase. ADVANCES IN FOOD AND NUTRITION RESEARCH 2016; 78:27-46. [PMID: 27452164 DOI: 10.1016/bs.afnr.2016.04.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Marine environment is the most abundant source of chitin. Several marine organisms possess chitin in their structural components. Hence, a huge amount of chitin wastes is deposited in marine environment when such organisms shed their outer skeleton and also after their demise. Waste chitins are potential nutrient source of certain microbes. These microbes produce chitinases that hydrolyze waste chitins. These organisms thus play an important role to remove the chitin wastes from marine environment. In connection with this, chitinases are found to be most important biocatalyst for the utilization of chitin wastes. Therefore, use of chitin for chitinase production is one of the useful tools for different types of bioprocesses.
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Warda EA, Abeer AAEA, Eman RH, Mahmoud AS, Ahmed IED. Applications of Plackett–Burman and Central Composite Design for the Optimization of Novel Brevundimonas diminuta KT277492 Chitinase Production, Investigation of its Antifungal Activity. BRAZILIAN ARCHIVES OF BIOLOGY AND TECHNOLOGY 2016; 59. [DOI: 10.1590/1678-4324-2016160245] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Lee YS, Kim KY. Statistical optimization of medium components for chitinase production byPseudomonas fluorescensstrain HN1205: role of chitinase on egg hatching inhibition of root-knot nematode. BIOTECHNOL BIOTEC EQ 2015. [DOI: 10.1080/13102818.2015.1010702] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Arul Jose P, Jebakumar SRD. Successive nonstatistical and statistical approaches for the improved antibiotic activity of rare actinomycete Nonomuraea sp. JAJ18. BIOMED RESEARCH INTERNATIONAL 2014; 2014:906097. [PMID: 25276828 PMCID: PMC4168032 DOI: 10.1155/2014/906097] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Accepted: 08/07/2014] [Indexed: 01/24/2023]
Abstract
The selection and optimization of nutritional constituents as well as their levels for the improved production of antibiotic by Nonomuraea sp. JAJ18 were carried out using combination of both nonstatistical one-factor-at-a-time (OFAT) method and statistical response surface methodology (RSM). Using OFAT method, starch and (NH4)2SO4 were identified as suitable carbon and nitrogen sources, respectively. Subsequently, starch, NaCl, and MgSO4 · 7H2O were recognized as the most significant media components with confidence level of above 95% using the Plackett-Burman design. The levels of the three media components were further optimized using RSM employed with Box-Behnken design. Accordingly, a second-order polynomial regression model was fitted into the experimental data. By analyzing the response surface plots as well as using numerical optimization method, the optimal levels for starch, NaCl, and MgSO4 · 7H2O were determined as 15.6 g/L, 0.8 g/L, and 1.98 g/L, respectively. With the optimized medium, 15.5% increase was observed in antibiotic activity of JAJ18. Results further support the use of RSM for media optimization. To the best of our knowledge, this is the first report of statistical media optimization for antibiotic production in rare actinomycete Nonomuraea species, which will be useful for the development of Nonomuraea cultivation process for efficient antibiotic production on a large scale.
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Affiliation(s)
- Polpass Arul Jose
- Department of Molecular Microbiology, School of Biotechnology, Madurai Kamaraj University, Madurai 625 021, India
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Production of enzymes by Alteromonas sp. A321 to degrade polysaccharides from Enteromorpha prolifera. Carbohydr Polym 2013; 98:988-94. [DOI: 10.1016/j.carbpol.2013.07.016] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2013] [Revised: 07/03/2013] [Accepted: 07/08/2013] [Indexed: 11/19/2022]
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Thadathil N, Kuttappan AKP, Vallabaipatel E, Kandasamy M, Velappan SP. Statistical optimization of solid state fermentation conditions for the enhanced production of thermoactive chitinases by mesophilic soil fungi using response surface methodology and their application in the reclamation of shrimp processing by-products. ANN MICROBIOL 2013. [DOI: 10.1007/s13213-013-0702-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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12
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Isolation of novel chitinolytic bacteria and production optimization of extracellular chitinase. JOURNAL OF GENETIC ENGINEERING AND BIOTECHNOLOGY 2013. [DOI: 10.1016/j.jgeb.2013.03.001] [Citation(s) in RCA: 128] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Suresh PV. Biodegradation of shrimp processing bio-waste and concomitant production of chitinase enzyme and N-acetyl-D-glucosamine by marine bacteria: production and process optimization. World J Microbiol Biotechnol 2012; 28:2945-62. [PMID: 22806736 DOI: 10.1007/s11274-012-1106-2] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2012] [Accepted: 06/11/2012] [Indexed: 11/29/2022]
Abstract
A total of 250 chitinolytic bacteria from 68 different marine samples were screened employing enrichment method that utilized native chitin as the sole carbon source. After thorough screening, five bacteria were selected as potential cultures and identified as; Stenotrophomonas sp. (CFR221 M), Vibrio sp. (CFR173 M), Phyllobacteriaceae sp. (CFR16 M), Bacillus badius (CFR198 M) and Bacillus sp. (CFR188 M). All five strains produced extracellular chitinase and GlcNAc in SSF using shrimp bio-waste. Scanning electron microscopy confirmed the ability of these marine bacteria to adsorb onto solid shrimp bio-waste and to degrade chitin microfibers. HPLC analysis of the SSF extract also confirmed presence of 36-65 % GlcNAc as a product of the degradation. The concomitant production of chitinase and GlcNAc by all five strains under SSF using shrimp bio-waste as the solid substrate was optimized by 'one factor at a time' approach. Among the strains, Vibrio sp. CFR173 M produced significantly higher yields of chitinase (4.8 U/g initial dry substrate) and GlcNAc (4.7 μmol/g initial dry substrate) as compared to other cultures tested. A statistically designed experiment was applied to evaluate the interaction of variables in the biodegradation of shrimp bio-waste and concomitant production of chitinase and GlcNAc by Vibrio sp. CFR173 M. Statistical optimization resulted in a twofold increase of chitinase, and a 9.1 fold increase of GlcNAc production. These results indicated the potential of chitinolytic marine bacteria for the reclamation of shrimp bio-waste, as well as the potential for economic production of chitinase and GlcNAc employing SSF using shrimp bio-waste as an ideal substrate.
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Affiliation(s)
- P V Suresh
- Department of Meat, Fish and Poultry Technology, CSIR-Central Food Technological Research Institute, Mysore 570020, India.
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Xue DS, Chen HY, Lin DQ, Guan YX, Yao SJ. Optimization of a Natural Medium for Cellulase by a Marine Aspergillus niger Using Response Surface Methodology. Appl Biochem Biotechnol 2012; 167:1963-72. [DOI: 10.1007/s12010-012-9734-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2011] [Accepted: 05/08/2012] [Indexed: 10/28/2022]
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15
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Optimization of medium composition for enhanced chitin deacetylase production by mutant Penicillium oxalicum SAEM-51 using response surface methodology under submerged fermentation. Process Biochem 2011. [DOI: 10.1016/j.procbio.2011.05.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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16
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Development and validation of a medium for recombinant endo-β-1,4-xylanase production by Kluyveromyces lactis using a statistical experimental design. ANN MICROBIOL 2011. [DOI: 10.1007/s13213-011-0258-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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17
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Agüero MV, Kotlar CE, Roura SI. METHODS: Simultaneous optimization of biomass and protease biosynthesis by a local isolatedPseudomonassp. — Selection of main medium components and operating conditions. Ind Biotechnol (New Rochelle N Y) 2011. [DOI: 10.1089/ind.2011.7.053] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- María Victoria Agüero
- Research Group on Food Engineering, Department of Chemical & Food Engineering, Faculty of Engineering, National University of Mar del Plata, Juan B. Justo 4302, 7600 Mar del Plata, Argentina; and National Council of Scientific and Technical Research (CONICET), Argentina
| | - Catalina Elena Kotlar
- Research Group on Food Engineering, Department of Chemical & Food Engineering, Faculty of Engineering, National University of Mar del Plata, Juan B. Justo 4302, 7600 Mar del Plata, Argentina; and National Council of Scientific and Technical Research (CONICET), Argentina
| | - Sara Inés Roura
- Research Group on Food Engineering, Department of Chemical & Food Engineering, Faculty of Engineering, National University of Mar del Plata, Juan B. Justo 4302, 7600 Mar del Plata, Argentina; and National Council of Scientific and Technical Research (CONICET), Argentina
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Thermoactive β-N-acetylhexosaminidase production by a soil isolate of Penicillium monoverticillium CFR 2 under solid state fermentation: parameter optimization and application for N-acetyl chitooligosaccharides preparation from chitin. World J Microbiol Biotechnol 2010; 27:1435-47. [DOI: 10.1007/s11274-010-0596-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2010] [Accepted: 10/14/2010] [Indexed: 10/18/2022]
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Srinandan CS, Jadav V, Cecilia D, Nerurkar AS. Nutrients determine the spatial architecture of Paracoccus sp. biofilm. BIOFOULING 2010; 26:449-459. [PMID: 20336558 DOI: 10.1080/08927011003739760] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Bacterial biofilms adapt and shape their structure in response to varied environmental conditions. A statistical methodology was adopted in this study to empirically investigate the influence of nutrients on biofilm structural parameters deduced from confocal scanning laser microscope images of Paracoccus sp.W1b, a denitrifying bacterium. High concentrations of succinate, Mg(++), Ca(++), and Mn(++) were shown to enhance biofilm formation whereas higher concentration of iron decreased biofilm formation. Biofilm formed at high succinate was uneven with high surface to biovolume ratio. Higher Mg(++) or Ca(++) concentrations induced cohesion of biofilm cells, but contrasting biofilm architectures were detected. Biofilm with subpopulation of pillar-like protruding cells was distributed on a mosaic form of monolayer cells in medium with 10 mM Mg(++). 10 mM Ca(++) induced a dense confluent biofilm. Denitrification activity was significantly increased in the Mg(++)- and Ca(++)-induced biofilms. Chelator treatment of various biofilm ages indicated that divalent cations are important in the initial stages of biofilm formation.
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Affiliation(s)
- C S Srinandan
- Department of Microbiology and Biotechnology Centre, Faculty of Science, M. S. University of Baroda, Vadodara, Gujarat, India
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Bioprocessing data for the production of marine enzymes. Mar Drugs 2010; 8:1323-72. [PMID: 20479981 PMCID: PMC2866489 DOI: 10.3390/md8041323] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2010] [Revised: 03/31/2010] [Accepted: 04/12/2010] [Indexed: 11/21/2022] Open
Abstract
This review is a synopsis of different bioprocess engineering approaches adopted for the production of marine enzymes. Three major modes of operation: batch, fed-batch and continuous have been used for production of enzymes (such as protease, chitinase, agarase, peroxidase) mainly from marine bacteria and fungi on a laboratory bioreactor and pilot plant scales. Submerged, immobilized and solid-state processes in batch mode were widely employed. The fed-batch process was also applied in several bioprocesses. Continuous processes with suspended cells as well as with immobilized cells have been used. Investigations in shake flasks were conducted with the prospect of large-scale processing in reactors.
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Chhaya U, Gupte A. Optimization of media components for laccase production by litter dwelling fungal isolate Fusarium incarnatum LD-3. J Basic Microbiol 2010; 50:43-51. [PMID: 20082375 DOI: 10.1002/jobm.200900203] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Laccase production by solid state fermentation (SSF) using an indigenously isolated litter dwelling fungus Fusarium incarnatum LD-3 was optimized. Fourteen medium components were screened by the initial screening method of Plackett-Burman. Each of the components was screened on the basis of 'p' (probability value) which was above 95% confidence level. Ortho-dianisidine, thiamine HCl and CuSO(4) . 5 H(2)O were identified as significant components for laccase production. The Central Composite Design response surface methodology was then applied to further optimize the laccase production. The optimal concentration of these three medium components for higher laccase production were (g/l): CuSO(4) . 5 H(2)O, 0.01; thiamine HCl, 0.0136 and ortho-dianisidine, 0.388 mM served as an inducer. Wheat straw, 5.0 g was used as a solid substrate. Using this statistical optimization method the laccase production was found to increase from 40 U/g to 650 U/g of wheat straw, which was sixteen times higher than non optimized medium. This is the first report on statistical optimization of laccase production from Fusarium incarnatum LD-3.
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Affiliation(s)
- Urvish Chhaya
- Department of Microbiology, N.V. Patel college of Pure and Applied Sciences, Sardar Patel University, Vallabh-Vidyanagar, Gujarat, India
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Singh AK, Mehta G, Chhatpar HS. Optimization of medium constituents for improved chitinase production by Paenibacillus sp. D1 using statistical approach. Lett Appl Microbiol 2009; 49:708-14. [PMID: 19780958 DOI: 10.1111/j.1472-765x.2009.02731.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
AIMS Statistical optimization of medium components for improved chitinase production by Paenibacillus sp. D1. METHODS AND RESULTS Urea, K(2)HPO(4), chitin and yeast extract were identified as significant components influencing chitinase production by Paenibacillus sp. D1 using Plackett-Burman method. Response surface methodology (central composite design) was applied for further optimization. The concentrations of medium components for improved chitinase production were as follows (g l(-1)): urea, 0.33; K(2)HPO(4), 1.17; MgSO(4), 0.3; yeast extract, 0.65 and chitin, 3.75. This statistical optimization approach led to the production of 93.2 +/- 0.58 U ml(-1) of chitinase. CONCLUSIONS The important factors controlling the production of chitinase by Paenibacillus sp. D1 were identified as urea, K(2)HPO(4), chitin and yeast extract. Statistical approach was found to be very effective in optimizing the medium components in manageable number of experimental runs with overall 2.56-fold increase in chitinase production. SIGNIFICANCE AND IMPACT OF THE STUDY The present investigation provides a report on statistical optimization of medium components for improved chitinase production by Paenibacillus sp. D1. Paenibacillus species are gram-positive, spore-forming bacteria with several PGPR and biocontrol potentials. However, only few reports concerning mycolytic enzyme production especially chitinases are available. Chitinase produced by Paenibacillus sp. D1 represents new source for biotechnological and agricultural use.
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Affiliation(s)
- A K Singh
- Department of Microbiology and Biotechnology Centre, Maharaja Sayajirao University of Baroda, Vadodara, India
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Yang J, Wang Q, Wang Q, Wu T. Heavy metals extraction from municipal solid waste incineration fly ash using adapted metal tolerant Aspergillus niger. BIORESOURCE TECHNOLOGY 2009; 100:254-260. [PMID: 18599287 DOI: 10.1016/j.biortech.2008.05.026] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2008] [Revised: 05/18/2008] [Accepted: 05/19/2008] [Indexed: 05/26/2023]
Abstract
This study focused on the adaptation of Aspergillus niger tolerating high concentration of heavy metals for bioleaching of fly ash. The Plackett-Burman design indicated that Al and Fe inhibited the growth of A. niger (AS 3.879 and AS 3.40) significantly. The single metal (Al and Fe) and multi-metals adapted AS 3.879 strain tolerated up to 3500 mg/L Al, 700 mg/L Fe, and 3208.1mg/L multi-metals, respectively. The order of metal extraction yield in two-step bioleaching of 60 and 70 g/L fly ash using Al adapted, multi-metals adapted and un-adapted AS 3.879 strains was as follows: multi-metals adapted>Al adapted>un-adapted. The multi-metals adapted strain grew with up to 70 g/L fly ash and secreted 256 mmol/L organic acids after 288 h, where 87.4% Cd, 64.8% Mn, 49.4% Zn and 45.9% Pb were dissolved. The extracted metals in TCLP test of the bioleached fly ash by multi-metals adapted strain were under the regulated levels in China.
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Affiliation(s)
- Jie Yang
- Shanghai Academy of Environmental Sciences, Shanghai, China
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Akhir S, Abd-Aziz S, Salleh M, Rahman R, Illias R, Hassan M. Medium Optimisation of Chitinase Enzyme Production from Shrimp Waste Using Bacillus licheniformis TH-1 by Response Surface Methods. ACTA ACUST UNITED AC 2008. [DOI: 10.3923/biotech.2009.120.125] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Han Y, Li Z, Miao X, Zhang F. Statistical optimization of medium components to improve the chitinase activity of Streptomyces sp. Da11 associated with the South China Sea sponge Craniella australiensis. Process Biochem 2008. [DOI: 10.1016/j.procbio.2008.05.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Biological control ofFusarium wilt of pigeonpea byPantoea dispersa, a field assessment. ANN MICROBIOL 2008. [DOI: 10.1007/bf03175536] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Bhanu Prakash GVS, Padmaja V, Siva Kiran RR. Statistical optimization of process variables for the large-scale production of Metarhizium anisopliae conidiospores in solid-state fermentation. BIORESOURCE TECHNOLOGY 2008; 99:1530-7. [PMID: 17590331 DOI: 10.1016/j.biortech.2007.04.031] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2006] [Revised: 04/14/2007] [Accepted: 04/15/2007] [Indexed: 05/16/2023]
Abstract
Optimization of conidial production was achieved by response surface methodology (RSM), a powerful mathematical approach widely applied in the optimization of fermentation process, using the three substrates; rice, barley and sorghum at variable pH, moisture content and yeast extract concentrations. These three factors were found to be important, affecting Metarhizium anisopliae spore production. A 2(3) full factorial central composite design and RSM were applied to determine the optimal concentration of each variable. A second-order polynomial was determined by the multiple regression analysis of the experimental data. Moisture content of 75.68% for sorghum, 73.21% for barley and 22.34% for rice produced optimal results. Maximal conidial yield was recorded for rice at a pH of 7.01; at 7.06 for sorghum and at 6.76 for barley.
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Affiliation(s)
- G V S Bhanu Prakash
- Department of Botany, Andhra University, Visakhapatnam 530 003, Andhra Pradesh, India
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Statistical optimisation of medium components for chitinase production byPaenibacillus sabina strain JD2. ANN MICROBIOL 2007. [DOI: 10.1007/bf03175360] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Utilization of various chitinous sources for production of mycolytic enzymes by Pantoea dispersa in bench-top fermenter. Enzyme Microb Technol 2007. [DOI: 10.1016/j.enzmictec.2006.11.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Statistical optimization of medium components for κ-carrageenase production by Pseudomonas elongata. Enzyme Microb Technol 2007. [DOI: 10.1016/j.enzmictec.2006.06.015] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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