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Kumar KG, Husain R, Mishra A, Vikram N, Dwivedi DK, Pandey S, Singh A. Rice crop residue management by the microbial consortium for rapid decomposition of straw. 3 Biotech 2024; 14:137. [PMID: 38682095 PMCID: PMC11045711 DOI: 10.1007/s13205-024-03982-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Accepted: 04/02/2024] [Indexed: 05/01/2024] Open
Abstract
Globally, more than 5 billion tons of crop residue (mainly rice straw) are produced yearly, and their management results in pollution, which kills microbes and limits soil nutrient recycling. Therefore, on-farm management that boosts degradation speed will improve the practicability of crop residue retention practices. The present study evaluated the 21 microbial isolates (Pseudomonas, Bacillus, Aspergillus, Trichoderma, Fusarium, and Rhizopus) from the soil of different agroclimatic zones obtained from rice fields for in situ straw degradation. The microbial diversity of these isolates was analyzed using 16 s rRNA and 18 s rRNA primers from various soil samples. The rice straw was used for degradation from isolated pathogens individually and in combination, and the results were analyzed using FTIR (Fourier transform infrared spectroscopy). The result suggested that the straw's degradation was the maximum with Trichoderma and Aspergillus, followed by the mixture of the isolates (Pseudomonas, Bacillus, Aspergillus, Trichoderma, Fusarium, and Rhizopus). Furthermore, SEM (scanning electron microscope) observed the degradation rate on different days of inoculation (7, 14, 28, 56, 70, and 100 DAI). The results showed that 90 DAI caused the highest degradation of rice straw. Therefore, Trichoderma containing microbial consortia could be used for vermicompost production from rice straw in field conditions, and it could increase crop productivity. Overall, our study added knowledge in rice straw management through a microbial consortium for better utilization in predominantly rice-growing countries. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-024-03982-z.
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Affiliation(s)
- Kunvar Gyanendra Kumar
- Department of Plant Molecular Biology and Genetic Engineering, Acharya Narendra Deva University of Agriculture and Technology, Ayodhya, Uttar Pradesh 224229 India
| | - Raja Husain
- Department of Agriculture, Himalayan University Itanagar, Itanagar, Arunachal Pradesh India
| | - Anurag Mishra
- Department of Plant Molecular Biology and Genetic Engineering, Acharya Narendra Deva University of Agriculture and Technology, Ayodhya, Uttar Pradesh 224229 India
- Department of Agricultural Biotechnology and Molecular Biology, Dr. Rajendra Prasad Central Agricultural University, Pusa, Samastipur, Bihar 848125 India
| | - Nitin Vikram
- Department of Soil Science and Agriculture Chemistry, Uttar Pradesh, Zila Parishad Krishi Mahavidyalaya, Banda, 210001 India
| | - Devendra Kumar Dwivedi
- Department of Plant Molecular Biology and Genetic Engineering, Acharya Narendra Deva University of Agriculture and Technology, Ayodhya, Uttar Pradesh 224229 India
| | - Saurabh Pandey
- Department of Agriculture, Guru Nanak Dev University, Amritsar, Punjab 143005 India
| | - Ashutosh Singh
- Centre for Advance Studies On Climate Change, Dr. Rajendra Prasad Central Agricultural University, Pusa, Samastipur, Bihar 848125 India
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Ramos MDN, Sandri JP, Claes A, Carvalho BT, Thevelein JM, Zangirolami TC, Milessi TS. Effective application of immobilized second generation industrial Saccharomyces cerevisiae strain on consolidated bioprocessing. N Biotechnol 2023; 78:153-161. [PMID: 37913920 DOI: 10.1016/j.nbt.2023.10.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 09/09/2023] [Accepted: 10/28/2023] [Indexed: 11/03/2023]
Abstract
Integrated bioprocessing strategies can facilitate ethanol production from both cellulose and hemicellulose fractions of lignocellulosic biomass. Consolidated bioprocessing (CBP) is an approach that combines enzyme production, biomass hydrolysis and sugar fermentation in a single step. However, technologies that propose the use of microorganisms together with solid biomass present the difficulty of the recovery and reuse of the biocatalyst, which can be overcome by cell immobilization. In this regard, this work applied immobilized cells of AC14 yeast, a recombinant yeast that secretes 7 hydrolytic enzymes, in the CBP process in a successful proof-of-concept for the enzyme access to the substrate polymers. The most appropriate cell load for CBP under the conditions studied with immobilized cells was selected among three optical densities (OD) 10, 55 and 100. These experiments were performed with free cells to ensure that the results were not biased by mass limitations effects. OD 10 achieved 100% of the sugar consumption and the higher specific production of enzymes, being selected for further studies. Diffusional effects were observed with immobilized cells under static conditions. However, mass transfer limitations were mitigated under agitation, with an 18.5% increase in substrate consumption rate (from 2.7 to 3.5 g/L/h), reaching the same substrate uptake rates as free cells. In addition, immobilized cells achieved 100% hydrolysis and consumption of all substrates offered within only 12 h. Overall, this is the first report of a successful application of immobilized yeast cells in CBP processes for bioethanol production, a promising technology that can be extended to other biorefinery bioproducts.
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Affiliation(s)
- Márcio D N Ramos
- Graduate Program of Chemical Engineering, Federal University of São Carlos (PPGEQ-UFSCar), Rodovia Washington Luís, km 235, 13565-905 São Carlos, SP, Brazil.
| | - Juliana P Sandri
- Graduate Program of Chemical Engineering, Federal University of São Carlos (PPGEQ-UFSCar), Rodovia Washington Luís, km 235, 13565-905 São Carlos, SP, Brazil
| | - Arne Claes
- NovelYeast bv, Bio-Incubator BIO4, Gaston Geenslaan 3, Leuven-Heverlee, Belgium
| | - Bruna T Carvalho
- NovelYeast bv, Bio-Incubator BIO4, Gaston Geenslaan 3, Leuven-Heverlee, Belgium
| | - Johan M Thevelein
- NovelYeast bv, Bio-Incubator BIO4, Gaston Geenslaan 3, Leuven-Heverlee, Belgium
| | - Teresa C Zangirolami
- Graduate Program of Chemical Engineering, Federal University of São Carlos (PPGEQ-UFSCar), Rodovia Washington Luís, km 235, 13565-905 São Carlos, SP, Brazil; Department of Chemical Engineering, Federal University of São Carlos, Rodovia Washington Luís, km 235, 13565-905 São Carlos, SP, Brazil
| | - Thais S Milessi
- Graduate Program of Chemical Engineering, Federal University of São Carlos (PPGEQ-UFSCar), Rodovia Washington Luís, km 235, 13565-905 São Carlos, SP, Brazil; Department of Chemical Engineering, Federal University of São Carlos, Rodovia Washington Luís, km 235, 13565-905 São Carlos, SP, Brazil; Graduate Program of Energy Engineering, Institute of Natural Resources, Federal University of Itajubá, Av. Benedito Pereira dos Santos, 1303, 37500-903 Itajubá, MG, Brazil.
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Singh N, Sithole BB, Govinden R. Optimisation of β-Glucosidase Production in a Crude Aspergillus japonicus VIT-SB1 Cellulase Cocktail Using One Variable at a Time and Statistical Methods and its Application in Cellulose Hydrolysis. Int J Mol Sci 2023; 24:9928. [PMID: 37373076 DOI: 10.3390/ijms24129928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 06/01/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023] Open
Abstract
Pulp and paper mill sludge (PPMS) is currently disposed of into landfills which are reaching their maximum capacity. Valorisation of PPMS by enzymatic hydrolysis using cellulases is an alternative strategy. Existing commercial cellulases are expensive and contain low titres of β-glucosidases. In this study, β-glucosidase production was optimised by Aspergillus japonicus VIT-SB1 to obtain higher β-glucosidase titres using the One Variable at a Time (OVAT), Plackett Burman (PBD), and Box Behnken design (BBD)of experiments and the efficiency of the optimised cellulase cocktail to hydrolyse cellulose was tested. β-Glucosidase production was enhanced from 0.4 to 10.13 U/mL, representing a 25.3-fold increase in production levels after optimisation. The optimal BBD production conditions were 6 days of fermentation at 20 °C, 125 rpm, 1.75% soy peptone, and 1.25% wheat bran in (pH 6.0) buffer. The optimal pH for β-glucosidase activity in the crude cellulase cocktail was (pH 5.0) at 50 °C. Optimal cellulose hydrolysis using the crude cellulase cocktail occurred at longer incubation times, and higher substrate loads and enzyme doses. Cellulose hydrolysis with the A. japonicus VIT-SB1 cellulase cocktail and commercial cellulase cocktails resulted in glucose yields of 15.12 and 12.33 µmol/mL glucose, respectively. Supplementation of the commercial cellulase cocktail with 0.25 U/mg of β-glucosidase resulted in a 19.8% increase in glucose yield.
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Affiliation(s)
- Nivisti Singh
- Discipline of Microbiology, School of Life Sciences, Westville Campus, University of KwaZulu-Natal, Durban 4001, South Africa
| | - Bishop Bruce Sithole
- Discipline of Engineering, Howard Campus, University of KwaZulu-Natal, Durban 4001, South Africa
| | - Roshini Govinden
- Discipline of Microbiology, School of Life Sciences, Westville Campus, University of KwaZulu-Natal, Durban 4001, South Africa
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Effect of Different Inducer Sources on Cellulase Enzyme Production by White-Rot Basidiomycetes Pleurotus ostreatus and Phanerochaete chrysosporium under Submerged Fermentation. FERMENTATION-BASEL 2022. [DOI: 10.3390/fermentation8100561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Cellulase enzymes attract a lot of research due to their industrial application. Diverse cellulase-producing organisms and substances that induce cellulase are highly sought after. This study aimed to evaluate the effect of different inducer sources on cellulase production by white rot fungi P. ostreatus CGMCC 3.7292 and P. chrysosporium CGMCC 3.7212 under submerged fermentation employing a completely randomized experimental design. The different inducer sources tested were nitrogen (yeast, potassium nitrate, sodium nitrate, ammonium sulphate, aqueous ammonia and urea), carbon (malt extract, glucose, fructose, carboxymethylcellulose, starch and xylose) and agro-biomass (stevia straw, wheat straw, oat straw, alfalfa straw, corn cobs and corn stover). These inducer sources strongly impacted enzyme activities by P. ostreatus CGMCC 3.7292 and P. chrysosporium CGMCC 3.7212. The suitable nitrogen and carbon inducer sources for cellulase activity by P. ostreatus and P. chrysosporium were yeast (1.354 U/mL and 1.154 U/mL) and carboxymethylcellulose (0.976 U/mL and 0.776 U/mL) while the suitable agro-biomass were wheat straw (6.880 U/mL) and corn stover (6.525 U/mL), respectively. The least inducer sources in terms of nitrogen, carbon and agro-biomass for cellulase activity by P. ostreatus and P. chrysosporium were urea (0.213 U/mL and 0.081 U/mL), glucose (0.042 U/mL and 0.035), xylose (0.042 U/mL and 0.035 U/mL) and stevia straw (1.555 U/mL and 0.960 U/mL). In submerged fermentation, the cellulase enzyme activity of P. ostreatus in response to various inducer sources was relatively higher than P. chrysosporium.
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Reyes C, Poulin A, Nyström G, Schwarze FWMR, Ribera J. Enzyme Activities of Five White-Rot Fungi in the Presence of Nanocellulose. J Fungi (Basel) 2021; 7:jof7030222. [PMID: 33803754 PMCID: PMC8003285 DOI: 10.3390/jof7030222] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 03/11/2021] [Accepted: 03/12/2021] [Indexed: 12/31/2022] Open
Abstract
White-rot fungi can degrade all lignocellulose components due to their potent lignin and cellulose-degrading enzymes. In this study, five white-rot fungi, Trametes versicolor, Trametes pubescens, Ganoderma adspersum, Ganoderma lipsiense, and Rigidoporus vitreus were tested for endoglucanase, laccase, urease, and glucose-6-phosphate (G6P) production when grown with malt extract and nanocellulose in the form of TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl radical) oxidized cellulose nanofibrils (CNF) and cellulose nanocrystals (CNC). Results show that temperature plays a key role in controlling the growth of all five fungi when cultured with malt extract alone. Endoglucanase activities were highest in cultures of G. adspersum and G. lipsiense and laccase activities were highest in cultures of T. versicolor and R. vitreus. Urease activities were highest in cultures of G. adspersum, G. lipsiense, and R. vitreus. Glucose-6-phosphate levels also indicate that cells were actively metabolizing glucose present in the cultures. These results show that TEMPO-oxidized CNF and CNC do not inhibit the production of specific lignocellulose enzymes by these white-rot fungi. The apparent lack of enzymatic inhibition makes TEMPO-oxidized CNF and CNC excellent candidates for future biotechnological applications in combination with the white-rot fungi studied here.
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Affiliation(s)
- Carolina Reyes
- Laboratory for Cellulose & Wood Materials, Empa, Überlandstrasse 129, 8600 Dübendorf, Switzerland; (A.P.); (G.N.)
- Correspondence: (C.R.); (J.R.)
| | - Alexandre Poulin
- Laboratory for Cellulose & Wood Materials, Empa, Überlandstrasse 129, 8600 Dübendorf, Switzerland; (A.P.); (G.N.)
| | - Gustav Nyström
- Laboratory for Cellulose & Wood Materials, Empa, Überlandstrasse 129, 8600 Dübendorf, Switzerland; (A.P.); (G.N.)
- Department of Health Science and Technology, ETH Zürich, Schmelzbergstrasse 9, 8092 Zürich, Switzerland
| | - Francis W. M. R. Schwarze
- Laboratory for Cellulose & Wood Materials, Empa, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland;
| | - Javier Ribera
- Laboratory for Cellulose & Wood Materials, Empa, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland;
- Correspondence: (C.R.); (J.R.)
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Martins EH, Ratuchne A, de Oliveira Machado G, Knob A. Canola meal as a promising source of fermentable sugars: Potential of the Penicillium glabrum crude extract for biomass hydrolysis. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2020. [DOI: 10.1016/j.bcab.2020.101713] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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7
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Narra M, Rudakiya DM, Macwan K, Patel N. Black liquor: A potential moistening agent for production of cost-effective hydrolytic enzymes by a newly isolated cellulo-xylano fungal strain Aspergillus tubingensis and its role in higher saccharification efficiency. BIORESOURCE TECHNOLOGY 2020; 306:123149. [PMID: 32179401 DOI: 10.1016/j.biortech.2020.123149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 03/02/2020] [Accepted: 03/03/2020] [Indexed: 06/10/2023]
Abstract
In the present study, black liquor generated during mild alkali pre-treatment was evaluated as a moistening agent to produce cost effective hydrolytic enzymes using novel cellulo-xylano fungal strain Aspergillus tubingensis M7. The fungus competently produced 21.90 and 22.46 filter paper, 1004 and 1369 endoglucanase, 117 and 142 β-glucosidase and 8188 and 7981 U/g xylanase activity by using modified Mandel & weber's and black liquor medium, respectively. The crude hydrolytic enzymes from black liquor were evaluated for saccharification of pre-treated biomass. Reducing sugar yields (mg/g substrate) and the corresponding saccharification efficiency (%) from rice straw, corncob, sugarcane bagasse and banana stem were 745.50 (86.02; 18 h); 596 (74.50; 24 h); 358.15 (42.98; 24 h) and 245.70 (33.00; 24 h), respectively. Residual biomass compositional analysis revealed that reduced onset temperature, increased activation energy and pre-exponential factor in saccharified biomass as compared to pre-treated and untreated biomass, suggesting their utilization for pyrolysis to obtain value added products.
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Affiliation(s)
- Madhuri Narra
- Bioconversion Technology Division, Sardar Patel Renewable Energy Research Institute, Vallabh Vidyanagar, Anand, Gujarat, India.
| | - Darshan M Rudakiya
- Bioconversion Technology Division, Sardar Patel Renewable Energy Research Institute, Vallabh Vidyanagar, Anand, Gujarat, India
| | - Kumud Macwan
- Bioconversion Technology Division, Sardar Patel Renewable Energy Research Institute, Vallabh Vidyanagar, Anand, Gujarat, India
| | - Nidhi Patel
- Bioconversion Technology Division, Sardar Patel Renewable Energy Research Institute, Vallabh Vidyanagar, Anand, Gujarat, India
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8
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Statistical Optimization for Coproduction of Chitinase and Beta 1, 4-Endoglucanase by Chitinolytic Paenibacillus elgii PB1 Having Antifungal Activity. Appl Biochem Biotechnol 2020; 191:135-150. [PMID: 31989438 DOI: 10.1007/s12010-020-03235-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 01/08/2020] [Indexed: 10/25/2022]
Abstract
A bacterial strain PB1 with antagonistic activity against pathogenic fungi was isolated from marine soil and was identified as Paenibacillus elgii based on phenotypic and genotypic characterization. The isolate showed good antifungal activity against "Aspergillus niger (MTCC 282), Trichophyton rubrum (MTCC 791), Microsporum gypseum (MTCC 2819), Candida albicans (MTCC 227), and Saccharomyces cerevisiae (MTCC 170)". Chitinase and beta 1, 4-endoglucanase are known for their capability to degrade fungal cell wall, thus we analyzed its productivity in PB1 strain using Plackett-Burman and Central Composite Design. The factors that affect the productivity of chitinase and beta 1, 4-endoglucanase were identified and optimized. A 7.77-fold increase (3.157 to 24.53 ± 1.33 U/mL) in chitinase and 7.422-fold increase (6.476 to 48.066 ± 0.676 U/mL) in beta 1, 4-endoglucanase versus basal medium was achieved. Chitinase and beta 1, 4-endoglucanase produced by Paenibacillus elgii strain PB1 represents the new source for biotechnological, medical, and agricultural applications.
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Characterization and Identification of Cellulose-degrading Bacteria Isolated from a Microbial Fuel Cell Reactor. BIOTECHNOL BIOPROC E 2019. [DOI: 10.1007/s12257-019-0089-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Wita A, Białas W, Wilk R, Szychowska K, Czaczyk K. The Influence of Temperature and Nitrogen Source on Cellulolytic Potential of Microbiota Isolated from Natural Environment. Pol J Microbiol 2019; 68:105-114. [PMID: 31050258 PMCID: PMC7256761 DOI: 10.21307/pjm-2019-012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/07/2018] [Indexed: 02/04/2023] Open
Abstract
Bacteria from the genus Bacillus are a rich source of commercial enzymes, including amylases, proteases, cellulases, glucose isomerase, and pullulanase. Cellulases account for 15% of the global market of industrial enzymes; thus, new microorganisms producing cellulases in a higher concentration and new ingredients, which can enhance the level of enzyme synthesis, are still needed. Many of cellulose-degrading microorganisms have been isolated so far and characterized in various regions of the world. In this study, we were looking for the bacteria isolated from the natural environment with the high cellulolytic potential, which could be used as components of a biopreparation to accelerate decomposition of postharvest leftovers in agriculture. The 214 bacterial strains were isolated from environmental samples rich in cellulose and their ability to synthesize cellulases were examined using the diffusion method. Six strains, which have the highest diameter of clearing zone both for biomass and supernatant, were selected for identification. Optimization of biosynthesis of the cellulose-degrading enzymes indicated that optimal temperature of this process fluctuated in the range of 21–42°C (depending on the strain and carbon source). The highest cellulolytic activity was observed for the isolates designed as 4/7 (identified as Bacillus subtilis) and 4/18 (identified as Bacillus licheniformis) in a temperature of 32°C. With the use of a desirability function methodology, the optimal medium composition to achieve a simple, cost-efficient process of cellulases production was developed for both strains. These experiments show that microorganisms isolated from natural environmental samples have unique properties and potential for commercial applications (e.g. for biopreparations production).
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Affiliation(s)
- Agnieszka Wita
- Department of Biotechnology and Food Microbiology, Poznań University of Life Sciences , Poland
| | - Wojciech Białas
- Department of Biotechnology and Food Microbiology, Poznań University of Life Sciences , Poland
| | | | | | - Katarzyna Czaczyk
- Department of Biotechnology and Food Microbiology, Poznań University of Life Sciences , Poland
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Yang Y, Hu B. Investigation on the Cultivation Conditions of a Newly Isolated Fusarium Fungal Strain for Enhanced Lipid Production. Appl Biochem Biotechnol 2019; 187:1220-1237. [PMID: 30203159 DOI: 10.1007/s12010-018-2870-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 08/20/2018] [Indexed: 12/29/2022]
Abstract
Fusarium equiseti UMN-1 fungal strain isolated from soybean is selected as a potential oleaginous fungal strain for biodiesel generation. It possesses desirable features, such as high lipid content (up to 56%) and high fatty acid methyl ester (FAME) content (more than 98%) in total lipids, and also has the capability to produce cellulase. This research focused on the investigation of the characteristics of this strain and optimization of culture conditions to enhance lipid production. Impact of temperature, agitation, C/N ratio, medium composition, and carbon and nitrogen sources has been observed, and central composite design (CCD) has been applied to improve the lipid accumulation. The optimum range for temperature, agitation, C/N ratio, and carbon and nitrogen concentrations was discovered, and the CCD model with the optimized growth medium and growth conditions achieved a maximum lipid production of 3.89 g/L. This research on F. equiseti UMN-1 fungal strain is expected to improve the feasibility of using microbial lipids of F. equiseti UMN-1 strains as the source of biofuels.
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Affiliation(s)
- Yan Yang
- Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave, Saint Paul, MN, 55108-6005, USA
| | - Bo Hu
- Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave, Saint Paul, MN, 55108-6005, USA.
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Functional characterisation of cellobiohydrolase I (Cbh1) from Trichoderma virens UKM1 expressed in Aspergillus niger. Protein Expr Purif 2019; 154:52-61. [DOI: 10.1016/j.pep.2018.09.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 08/12/2018] [Accepted: 09/20/2018] [Indexed: 11/20/2022]
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13
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Coniglio RO, Fonseca MI, Díaz GV, Ontañon O, Ghio S, Campos E, Zapata PD. Optimization of cellobiohydrolase production and secretome analysis of Trametes villosa LBM 033 suitable for lignocellulosic bioconversion. ARAB JOURNAL OF BASIC AND APPLIED SCIENCES 2019. [DOI: 10.1080/25765299.2019.1598107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Affiliation(s)
- Romina O. Coniglio
- Laboratorio de Biotecnología Molecular, Instituto de Biotecnología Misiones, Facultad de Ciencias Exactas, Químicas y Naturales, Universidad Nacional de Misiones (UNaM), Posadas, Misiones, Argentina
| | - María I. Fonseca
- Laboratorio de Biotecnología Molecular, Instituto de Biotecnología Misiones, Facultad de Ciencias Exactas, Químicas y Naturales, Universidad Nacional de Misiones (UNaM), Posadas, Misiones, Argentina
| | - Gabriela V. Díaz
- Laboratorio de Biotecnología Molecular, Instituto de Biotecnología Misiones, Facultad de Ciencias Exactas, Químicas y Naturales, Universidad Nacional de Misiones (UNaM), Posadas, Misiones, Argentina
| | - Ornella Ontañon
- Laboratorio de Bioenergía, Instituto de Biotecnología, CICVyA, Instituto Nacional de Tecnología Agropecuaria (INTA), Hurlingham, Buenos Aires, Argentina
| | - Silvina Ghio
- Laboratorio de Bioenergía, Instituto de Biotecnología, CICVyA, Instituto Nacional de Tecnología Agropecuaria (INTA), Hurlingham, Buenos Aires, Argentina
| | - Eleonora Campos
- Laboratorio de Bioenergía, Instituto de Biotecnología, CICVyA, Instituto Nacional de Tecnología Agropecuaria (INTA), Hurlingham, Buenos Aires, Argentina
| | - Pedro D. Zapata
- Laboratorio de Biotecnología Molecular, Instituto de Biotecnología Misiones, Facultad de Ciencias Exactas, Químicas y Naturales, Universidad Nacional de Misiones (UNaM), Posadas, Misiones, Argentina
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14
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An Insight into Fungal Cellulases and Their Industrial Applications. Fungal Biol 2019. [DOI: 10.1007/978-3-030-14726-6_2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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15
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Sreena C, Sebastian D. Augmented cellulase production by Bacillus subtilis strain MU S1 using different statistical experimental designs. J Genet Eng Biotechnol 2018; 16:9-16. [PMID: 30647698 PMCID: PMC6296623 DOI: 10.1016/j.jgeb.2017.12.005] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 12/25/2017] [Accepted: 12/29/2017] [Indexed: 11/23/2022]
Abstract
The production of cellulase by Bacillus subtilis MU S1, a strain isolated from Eravikulam National Park, was optimized using one-factor-at-a-time (OFAT) and statistical methods. Physical parameters like incubation temperature and agitation speed were optimized using OFAT and found to be 40 °C and 150 rpm, respectively, whereas, medium was optimized by statistical tools. Plackett-Burman design (PBD) was employed to screen the significant variables that highly influence cellulase production. The design showed carboxymethyl cellulose (CMC), yeast extract, NaCl, pH, MgSO4 and NaNO3 as the most significant components that affect cellulase production. Among these CMC, yeast extract, NaCl and pH showed positive effect whereas MgSO4 and NaNO3 were found to be significant at their lower levels. The optimum levels of the components that positively affect enzyme production were determined using response surface methodology (RSM) based on central composite design (CCD). Three factors namely CMC, yeast extract and NaCl were studied at five levels whilst pH of the medium was kept constant at 7. The optimal levels of the components were CMC (13.46 g/l), yeast extract (8.38 g/l) and NaCl (6.31 g/l) at pH 7. The maximum cellulase activity in optimized medium was 566.66 U/ml which was close to the predicted activity of 541.05 U/ml. Optimization of physical parameters and medium components showed an overall 3.2-fold increase in activity compared to unoptimized condition (179.06 U/ml).
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Affiliation(s)
| | - Denoj Sebastian
- Department of Life Sciences, University of Calicut, Malappuram, Kerala 673635, India
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Mäkinen MA, Risulainen N, Mattila H, Lundell TK. Transcription of lignocellulose-decomposition associated genes, enzyme activities and production of ethanol upon bioconversion of waste substrate by Phlebia radiata. Appl Microbiol Biotechnol 2018; 102:5657-5672. [PMID: 29728725 DOI: 10.1007/s00253-018-9045-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Revised: 04/17/2018] [Accepted: 04/21/2018] [Indexed: 12/30/2022]
Abstract
Previously identified twelve plant cell wall degradation-associated genes of the white rot fungus Phlebia radiata were studied by RT-qPCR in semi-aerobic solid-state cultures on lignocellulose waste material, and on glucose-containing reference medium. Wood-decay-involved enzyme activities and ethanol production were followed to elucidate both the degradative and fermentative processes. On the waste lignocellulose substrate, P. radiata carbohydrate-active enzyme (CAZy) genes encoding cellulolytic and hemicellulolytic activities were significantly upregulated whereas genes involved in lignin modification displayed a more complex response. Two lignin peroxidase genes were differentially expressed on waste lignocellulose compared to glucose medium, whereas three manganese peroxidase-encoding genes were less affected. On the contrary, highly significant difference was noticed for three cellulolytic genes (cbhI_1, eg1, bgl1) with higher expression levels on the lignocellulose substrate than on glucose. This indicates expression of the wood-attacking degradative enzyme system by the fungus also on the recycled, waste core board material. During the second week of cultivation, ethanol production increased on the core board to 0.24 g/L, and extracellular activities against cellulose, xylan, and lignin were detected. Sugar release from the solid lignocellulose resulted with concomitant accumulation of ethanol as fermentation product. Our findings confirm that the fungus activates its white rot decay system also on industrially processed lignocellulose adopted as growth substrate, and under semi-aerobic cultivation conditions. Thus, P. radiata is a good candidate for lignocellulose-based renewable biotechnology to make biofuels and biocompounds from materials with less value for recycling or manufacturing.
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Affiliation(s)
- Mari A Mäkinen
- Department of Microbiology, Faculty of Agriculture and Forestry, University of Helsinki, Viikki Campus, FI-00014, Helsinki, Finland.
| | - Netta Risulainen
- Department of Microbiology, Faculty of Agriculture and Forestry, University of Helsinki, Viikki Campus, FI-00014, Helsinki, Finland
| | - Hans Mattila
- Department of Microbiology, Faculty of Agriculture and Forestry, University of Helsinki, Viikki Campus, FI-00014, Helsinki, Finland
| | - Taina K Lundell
- Department of Microbiology, Faculty of Agriculture and Forestry, University of Helsinki, Viikki Campus, FI-00014, Helsinki, Finland
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Abada E, Al-Fifi Z, Osman M. Bioethanol production with carboxymethylcellulase of Pseudomonas poae using castor bean ( Ricinus communis L.) cake. Saudi J Biol Sci 2018; 26:866-871. [PMID: 31049016 PMCID: PMC6486512 DOI: 10.1016/j.sjbs.2018.02.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2017] [Revised: 01/26/2018] [Accepted: 02/27/2018] [Indexed: 11/25/2022] Open
Abstract
Increased consumption of fossil fuels is an emerging problem. Scientists look for the existence of other alternatives to fossil fuels, including so-called renewable energy. Accordingly, we report the production of bio-ethanol from the remnants of castor oil bean seed cake (CBC) by the carboxymethylcellulase enzyme (CMCase). A bacterial strain isolated from rice straw showing higher CMCase activity was identified. The 16S rRNA result showed a 93% homology with the 16SrRNA gene sequences of Pseudomonas poae RE∗1-1-14, the strain was identified as Pseudomonas poae AB3. In addition, our results showed that the highest enzyme activity was achieved after 48 h and inoculum size of 3.7 × 105 CFU. The optimum temperature, pH and Carboxymethylcellulose (CMC) concentration for the highest enzyme activity was 25 °C, pH 7 and 10 g/l respectively. Furthermore, The CMCase was purified by ammonium sulphate at a concentration of 60%. The SDS-PAGE of the purified enzyme showed a molecular weight of 88 kDa. Additionally, the (CBC) was hydrolyzed by the purified CMCase at the enzyme optimum conditions. The results showed the liberation of 5.2 g/L of reducing sugar by using dinitrosalicylic acid (DNS) assay. Finally, the total sugar produces 35 g/L after 48 h when Saccharomyces cerevisiae was used as a fermentation agent. Hence for the first time, we have been successfully able to produce bioethanol from CBC with CMCase of Pseudomonas poae.
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Affiliation(s)
- Emad Abada
- Botany and Microbiology Dep., Faculty of Science, Helwan University, Cairo, Egypt.,Biology Dep., Faculty of Science, Jazan University, Jazan, Saudi Arabia
| | - Zarraq Al-Fifi
- Biology Dep., Faculty of Science, Jazan University, Jazan, Saudi Arabia
| | - Mohamed Osman
- Botany and Microbiology Dep., Faculty of Science, Helwan University, Cairo, Egypt
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18
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Sun Z, He Z, Tan Z, Liu S, Zhang Q, Han X, Tang S, Zhou C, Wang M. Effects of energy and protein restriction on digestion and absorption in the gastrointestinal tract of Liuyang Black kids. Small Rumin Res 2017. [DOI: 10.1016/j.smallrumres.2017.06.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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19
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Abstract
Alkali-assisted acid pretreated rice straw was saccharified using cellulase from Aspergillus niger BK01. The cellulase production by the fungus was enhanced by parametric optimization using solid-state fermentation conditions. Maximum cellulase production (12.0 U/gds of carboxymethyl cellulase, CMCase) was achieved in 96 h, using 6.0% substrate concentration, 7.5% inoculum concentration, 1:2 solid to liquid ratio, at pH 5.5, and temperature 28 °C, by supplementation of the fermentation medium with 0.1% carboxymethylcellulose and 0.1% ammonium nitrate. Characterization of crude cellulases showed that highest CMCase activity was observed at pH 4.8 and temperature 40 °C. The CMCase was stable from pH 4.8-5.5 and at a temperature range of 35-50 °C. The pretreated biomass was subjected to hydrolysis with the fungal cellulases. The saccharification optimization studies showed that 2% (v/v) enzyme concentration and hydrolysis time of 2.5 h were optimum for maximum yield, i.e, 23.78% sugars and 35.96% saccharification value.
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20
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Shukla R, Kumar M, Chakraborty S, Gupta R, Kumar S, Sahoo D, Kuhad RC. Process development for the production of bioethanol from waste algal biomass of Gracilaria verrucosa. BIORESOURCE TECHNOLOGY 2016; 220:584-589. [PMID: 27619709 DOI: 10.1016/j.biortech.2016.08.096] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 08/24/2016] [Accepted: 08/25/2016] [Indexed: 06/06/2023]
Abstract
The algal biomass of different species of Gracilaria were collected from coasts of Orissa and Tamil Nadu, India and characterized biochemically. Among various species, G. verrucosa was found to be better in terms of total carbohydrate content (56.65%) and hence selected for further studies. The agar was extracted from algal biomass and the residual pulp was enzymatically hydrolyzed. The optimization of algal pulp hydrolysis for various parameters revealed a maximum sugar release of 75.8mg/ml with 63% saccharification yield. The fermentation of enzymatic hydrolysate of algal pulp was optimized and 8% (v/v) inoculum size, 12h inoculum age, pH 5.0 were found to be optimum parameters for maximum ethanol concentration (27.2g/L) after 12h. The process of enzymatic hydrolysis and fermentation were successfully scaled up to 2L bioreactor scale.
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Affiliation(s)
- Rishikesh Shukla
- Central University of Haryana, Jant-Pali, Mahendergarh 123029, Haryana, India; Lignocellulose Biotechnology Laboratory, Department of Microbiology, University of Delhi South Campus, New Delhi 110021, India
| | - Manoj Kumar
- Marine Biotechnology Laboratory, Department of Botany, University of Delhi, Delhi 110007, India
| | - Subhojit Chakraborty
- Lignocellulose Biotechnology Laboratory, Department of Microbiology, University of Delhi South Campus, New Delhi 110021, India
| | - Rishi Gupta
- Central University of Haryana, Jant-Pali, Mahendergarh 123029, Haryana, India; Lignocellulose Biotechnology Laboratory, Department of Microbiology, University of Delhi South Campus, New Delhi 110021, India
| | - Savindra Kumar
- Marine Biotechnology Laboratory, Department of Botany, University of Delhi, Delhi 110007, India
| | - Dinabandhu Sahoo
- Marine Biotechnology Laboratory, Department of Botany, University of Delhi, Delhi 110007, India
| | - Ramesh Chander Kuhad
- Central University of Haryana, Jant-Pali, Mahendergarh 123029, Haryana, India; Lignocellulose Biotechnology Laboratory, Department of Microbiology, University of Delhi South Campus, New Delhi 110021, India.
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21
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Zhang D, Luo Y, Chu S, Zhi Y, Wang B, Zhou P. Biological pretreatment of rice straw with Streptomyces griseorubens JSD-1 and its optimized production of cellulase and xylanase for improved enzymatic saccharification efficiency. Prep Biochem Biotechnol 2016; 46:575-85. [DOI: 10.1080/10826068.2015.1084932] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Dan Zhang
- Key Laboratory of Urban Agriculture (South) Ministry of Agriculture, School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai, China
| | - Yanqing Luo
- Key Laboratory of Urban Agriculture (South) Ministry of Agriculture, School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai, China
| | - Shaohua Chu
- Key Laboratory of Urban Agriculture (South) Ministry of Agriculture, School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai, China
| | - Yuee Zhi
- Key Laboratory of Urban Agriculture (South) Ministry of Agriculture, School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai, China
| | - Bin Wang
- Key Laboratory of Urban Agriculture (South) Ministry of Agriculture, School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai, China
| | - Pei Zhou
- Key Laboratory of Urban Agriculture (South) Ministry of Agriculture, School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai, China
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Hamouda RA, Sherif SA, Dawoud GTM, Ghareeb MM. Enhancement of bioethanol production from Ulva fasciata by biological and chemical saccharification. RENDICONTI LINCEI-SCIENZE FISICHE E NATURALI 2016. [DOI: 10.1007/s12210-016-0546-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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23
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Co-Cultivation of Penicillium sp. AKB-24 and Aspergillus nidulans AKB-25 as a Cost-Effective Method to Produce Cellulases for the Hydrolysis of Pearl Millet Stover. FERMENTATION-BASEL 2016. [DOI: 10.3390/fermentation2020012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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24
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Sharma R, Rawat R, Bhogal RS, Oberoi HS. Multi-component thermostable cellulolytic enzyme production by Aspergillus niger HN-1 using pea pod waste: Appraisal of hydrolytic potential with lignocellulosic biomass. Process Biochem 2015. [DOI: 10.1016/j.procbio.2015.01.025] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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25
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Improvement of Aspergillus oryzae NRRL 3484 by mutagenesis and optimization of culture conditions in solid-state fermentation for the hyper-production of extracellular cellulase. Antonie Van Leeuwenhoek 2014; 106:853-64. [DOI: 10.1007/s10482-014-0255-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Accepted: 08/05/2014] [Indexed: 11/26/2022]
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26
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Huang Y, Jin Y, Shen W, Fang Y, Zhang G, Zhao H. The use of plant cell wall-degrading enzymes from newly isolatedPenicillium ochrochloronBiourge for viscosity reduction in ethanol production with fresh sweet potato tubers as feedstock. Biotechnol Appl Biochem 2014; 61:480-91. [DOI: 10.1002/bab.1190] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Accepted: 12/03/2013] [Indexed: 11/06/2022]
Affiliation(s)
- Yuhong Huang
- Environmental Microbiology Key Laboratory of Sichuan Province; Chengdu Institute of Biology; Chinese Academy of Sciences; Chengdu Sichuan People's Republic of China
- Graduate University of the Chinese Academy of Sciences; Beijing People's Republic of China
- Key Laboratory of Environmental and Applied Microbiology; Chinese Academy of Sciences; Chengdu People's Republic of China
| | - Yanling Jin
- Environmental Microbiology Key Laboratory of Sichuan Province; Chengdu Institute of Biology; Chinese Academy of Sciences; Chengdu Sichuan People's Republic of China
- Key Laboratory of Environmental and Applied Microbiology; Chinese Academy of Sciences; Chengdu People's Republic of China
| | - Weiliang Shen
- Environmental Microbiology Key Laboratory of Sichuan Province; Chengdu Institute of Biology; Chinese Academy of Sciences; Chengdu Sichuan People's Republic of China
- Key Laboratory of Environmental and Applied Microbiology; Chinese Academy of Sciences; Chengdu People's Republic of China
| | - Yang Fang
- Environmental Microbiology Key Laboratory of Sichuan Province; Chengdu Institute of Biology; Chinese Academy of Sciences; Chengdu Sichuan People's Republic of China
- Key Laboratory of Environmental and Applied Microbiology; Chinese Academy of Sciences; Chengdu People's Republic of China
| | - Guohua Zhang
- Environmental Microbiology Key Laboratory of Sichuan Province; Chengdu Institute of Biology; Chinese Academy of Sciences; Chengdu Sichuan People's Republic of China
- Key Laboratory of Environmental and Applied Microbiology; Chinese Academy of Sciences; Chengdu People's Republic of China
| | - Hai Zhao
- Environmental Microbiology Key Laboratory of Sichuan Province; Chengdu Institute of Biology; Chinese Academy of Sciences; Chengdu Sichuan People's Republic of China
- Key Laboratory of Environmental and Applied Microbiology; Chinese Academy of Sciences; Chengdu People's Republic of China
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Parametric Optimization of Cultural Conditions for Carboxymethyl Cellulase Production Using Pretreated Rice Straw by Bacillus sp. 313SI under Stationary and Shaking Conditions. BIOTECHNOLOGY RESEARCH INTERNATIONAL 2014; 2014:651839. [PMID: 24868469 PMCID: PMC4020544 DOI: 10.1155/2014/651839] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Revised: 03/21/2014] [Accepted: 03/31/2014] [Indexed: 11/24/2022]
Abstract
Carboxymethyl cellulase (CMCase) provides a key opportunity for achieving tremendous benefits of utilizing rice straw as cellulosic biomass. Out of total 80 microbial isolates from different ecological niches one bacterial strain, identified as Bacillus sp. 313SI, was selected for CMCase production under stationary as well as shaking conditions of growth. During two-stage pretreatment, rice straw was first treated with 0.5 M KOH to remove lignin followed by treatment with 0.1 N H2SO4 for removal of hemicellulose. The maximum carboxymethyl cellulase activity of 3.08 U/mL was obtained using 1% (w/v) pretreated rice straw with 1% (v/v) inoculum, pH 8.0 at 35°C after 60 h of growth under stationary conditions, while the same was obtained as 4.15 U/mL using 0.75% (w/v) pretreated substrate with 0.4% (v/v) inoculum, pH 8.0 at 30°C, under shaking conditions of growth for 48 h. For maximum titre of CMCase carboxymethyl cellulose was optimized as the best carbon source under both cultural conditions while ammonium sulphate and ammonium nitrate were optimized as the best nitrogen sources under stationary and shaking conditions, respectively. The present study provides the useful data about the optimized conditions for CMCase production by Bacillus sp. 313SI from pretreated rice straw.
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Rytioja J, Hildén K, Hatakka A, Mäkelä MR. Transcriptional analysis of selected cellulose-acting enzymes encoding genes of the white-rot fungus Dichomitus squalens on spruce wood and microcrystalline cellulose. Fungal Genet Biol 2014; 72:91-98. [PMID: 24394946 DOI: 10.1016/j.fgb.2013.12.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2013] [Revised: 12/20/2013] [Accepted: 12/23/2013] [Indexed: 10/25/2022]
Abstract
The recent discovery of oxidative cellulose degradation enhancing enzymes has considerably changed the traditional concept of hydrolytic cellulose degradation. The relative expression levels of ten cellulose-acting enzyme encoding genes of the white-rot fungus Dichomitus squalens were studied on solid-state spruce wood and in microcrystalline Avicel cellulose cultures. From the cellobiohydrolase encoding genes, cel7c was detected at the highest level and showed constitutive expression whereas variable transcript levels were detected for cel7a, cel7b and cel6 in the course of four-week spruce cultivation. The cellulolytic enzyme activities detected in the liquid cultures were consistent with the transcript levels. Interestingly, the selected lytic polysaccharide monooxygenase (LPMO) encoding genes were expressed in both cultures, but showed different transcription patterns on wood compared to those in submerged microcrystalline cellulose cultures. On spruce wood, higher transcript levels were detected for the lpmos carrying cellulose binding module (CBM) than for the lpmos without CBMs. In both cultures, the expression levels of the lpmo genes were generally higher than the levels of cellobiose dehydrogenase (CDH) encoding genes. Based on the results of this work, the oxidative cellulose cleaving enzymes of D. squalens have essential role in cellulose degrading machinery of the fungus.
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Affiliation(s)
- Johanna Rytioja
- Department of Food and Environmental Sciences, Division of Microbiology and Biotechnology, University of Helsinki, Viikki Biocenter 1, Finland
| | - Kristiina Hildén
- Department of Food and Environmental Sciences, Division of Microbiology and Biotechnology, University of Helsinki, Viikki Biocenter 1, Finland
| | - Annele Hatakka
- Department of Food and Environmental Sciences, Division of Microbiology and Biotechnology, University of Helsinki, Viikki Biocenter 1, Finland
| | - Miia R Mäkelä
- Department of Food and Environmental Sciences, Division of Microbiology and Biotechnology, University of Helsinki, Viikki Biocenter 1, Finland.
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29
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Sandhu SK, Oberoi HS, Babbar N, Miglani K, Chadha BS, Nanda DK. Two-stage statistical medium optimization for augmented cellulase production via solid-state fermentation by newly isolated Aspergillus niger HN-1 and application of crude cellulase consortium in hydrolysis of rice straw. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:12653-12661. [PMID: 24328069 DOI: 10.1021/jf403083g] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Cellulolytic enzyme production by newly isolated Aspergillus niger HN-1 was statistically optimized using Plackett-Burman and central composite design (CCD). Optimum concentrations of 2, 0.40, 0.01, and 0.60 g L (-1) for KH2PO4, urea, trace elements solution, and CaCl2·2H2O, respectively, were suggested by Design-Expert software. The two-stage optimization process led to a 3- and 2-fold increases in the filter paper cellulase (FP) and β-glucosidase activities, respectively. FP, β-glucosidase, endoglucanase, exopolygalaturonase, cellobiohydrolase, xylanase, α-l-arabinofuranosidase, β-xylosidase, and xylan esterase activities of 36.7 ± 1.54 FPU gds(-1), 252.3 ± 7.4 IU gds(-1), 416.3 ± 22.8 IU gds(-1), 111.2 ± 5.4 IU gds(-1), 8.9 ± 0.50 IU gds(-1), 2593.5 ± 78.9 IU gds(-1), 79.4 ± 4.3 IU gds(-1), 180.8 ± 9.3 IU gds(-1), and 288.7 ± 11.8 IU gds(-1), respectively, were obtained through solid-state fermentation during the validation studies. Hydrolysis of alkali-treated rice straw with crude cellulases resulted in about 84% glucan to glucose, 89% xylan to xylose, and 91% arabinan to arabinose conversions, indicating potential for biomass hydrolysis by the crude cellulase consortium obtained in this study.
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Affiliation(s)
- Simranjeet Kaur Sandhu
- Central Institute of Post-Harvest Engineering and Technology, P.O. PAU, Ludhiana 141 004, India
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30
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Oberoi HS, Rawat R, Chadha BS. Response surface optimization for enhanced production of cellulases with improved functional characteristics by newly isolated Aspergillus niger HN-2. Antonie Van Leeuwenhoek 2013; 105:119-34. [DOI: 10.1007/s10482-013-0060-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2013] [Accepted: 10/17/2013] [Indexed: 11/29/2022]
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31
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Cellulolytic potential and filter paper activity of fungi isolated from ancients manuscripts from the Medina of Fez. ANN MICROBIOL 2013. [DOI: 10.1007/s13213-013-0718-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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32
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Improvement of β-glucosidase production by co-culture of Aspergillus niger and A. oryzae under solid state fermentation through feeding process. ANN MICROBIOL 2013. [DOI: 10.1007/s13213-013-0696-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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33
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Ibrahim MF, Razak MNA, Phang LY, Hassan MA, Abd-Aziz S. Crude cellulase from oil palm empty fruit bunch by Trichoderma asperellum UPM1 and Aspergillus fumigatus UPM2 for fermentable sugars production. Appl Biochem Biotechnol 2013; 170:1320-35. [PMID: 23666614 DOI: 10.1007/s12010-013-0275-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2013] [Accepted: 04/29/2013] [Indexed: 11/25/2022]
Abstract
Cellulase is an enzyme that converts the polymer structure of polysaccharides into fermentable sugars. The high market demand for this enzyme together with the variety of applications in the industry has brought the research on cellulase into focus. In this study, crude cellulase was produced from oil palm empty fruit bunch (OPEFB) pretreated with 2% NaOH with autoclave, which was composed of 59.7% cellulose, 21.6% hemicellulose, and 12.3% lignin using Trichoderma asperellum UPM1 and Aspergillus fumigatus UPM2. Approximately 0.8 U/ml of FPase, 24.7 U/ml of CMCase and 5.0 U/ml of β-glucosidase were produced by T. asperellum UPM1 at a temperature of 35 °C and at an initial pH of 7.0. A 1.7 U/ml of FPase, 24.2 U/ml of CMCase, and 1.1 U/ml of β-glucosidase were produced by A. fumigatus UPM2 at a temperature of 45 °C and at initial pH of 6.0. The crude cellulase was best produced at 1% of substrate concentration for both T. asperellum UPM1 and A. fumigatus UPM2. The hydrolysis percentage of pretreated OPEFB using 5% of crude cellulase concentration from T. asperellum UPM1 and A. fumigatus UPM2 were 3.33% and 19.11%, with the reducing sugars concentration of 1.47 and 8.63 g/l, respectively.
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Affiliation(s)
- M F Ibrahim
- Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
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Rubeena M, Neethu K, Sajith S, Sreedevi S, Priji P, Unni KN, Josh MKS, Jisha VN, Pradeep S, Benjamin S. Lignocellulolytic activities of a novel strain of <i>Trichoderma harzianum</i>. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/abb.2013.42030] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Song JK, Kim D, Eun JB, Choi BD, Oh MJ, Jung SJ. Identification of cellulolytic bacteria associated with tunic softness syndrome in the sea squirt, Halocynthia roretzi. Food Sci Biotechnol 2012. [DOI: 10.1007/s10068-012-0185-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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36
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Deswal D, Gupta R, Kuhad RC. Enhanced Exoglucanase Production by Brown Rot Fungus Fomitopsis sp. RCK2010 and its Application for Cellulose Saccharification. Appl Biochem Biotechnol 2012; 168:2004-16. [DOI: 10.1007/s12010-012-9913-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2012] [Accepted: 10/03/2012] [Indexed: 11/29/2022]
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37
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Kim HJ, Lee YJ, Gao W, Chung CH, Son CW, Lee JW. Statistical optimization of fermentation conditions and comparison of their influences on production of cellulases by a psychrophilic marine bacterium, Psychrobacter aquimaris LBH-10 using orthogonal array method. BIOTECHNOL BIOPROC E 2011. [DOI: 10.1007/s12257-010-0457-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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38
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Kim HJ, Lee YJ, Gao W, Chung CH, Lee JW. Optimization of salts in medium for production of carboxymethylcellulase by a psychrophilic marine bacterium, Psychrobacter aquimaris LBH-10 using two statistical methods. KOREAN J CHEM ENG 2011. [DOI: 10.1007/s11814-011-0192-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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39
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Deswal D, Khasa YP, Kuhad RC. Optimization of cellulase production by a brown rot fungus Fomitopsis sp. RCK2010 under solid state fermentation. BIORESOURCE TECHNOLOGY 2011; 102:6065-6072. [PMID: 21470856 DOI: 10.1016/j.biortech.2011.03.032] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2011] [Revised: 03/10/2011] [Accepted: 03/11/2011] [Indexed: 05/30/2023]
Abstract
Culture conditions for enhanced cellulase production from a newly isolated brown rot fungus, Fomitopsis sp. RCK2010 were optimized under solid state fermentation. An initial pH of 5.5 and moisture ratio of 1:3.5 (solid:liquid) were found to be optimal for maximum enzyme production. Of the different carbon sources tested wheat bran gave the maximum production of CMCase (71.526 IU/g), FPase (3.268 IU/g), and β-glucosidase (50.696 IU/g). Among the nitrogen sources, urea caused maximum production of CMCase (81.832 IU/g), where as casein and soyabean meal gave the highest FPase (4.682 IU/g) and β-glucosidase (69.083 IU/g) production, respectively. Among amino acids tested glutamic acid gave the highest production for CMCase (84.127I U/g); however 4-hydroxy-l-proline stimulated maximum FPase production (6.762 IU/g). Saccharification of pretreated rice straw and wheat straw by crude enzyme extract from Fomitopsis sp. RCK2010 resulted in release of 157.160 and 214.044 mg/g of reducing sugar, respectively.
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Affiliation(s)
- Deepa Deswal
- Lignocellulose Biotechnology Laboratory, Department of Microbiology, University of Delhi South Campus, Benito Juarez Road, New Delhi 110 021, India
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Samira M, Mohammad R, Gholamreza G. Carboxymethyl-cellulase and Filter-paperase Activity of New Strains Isolated from Persian Gulf. ACTA ACUST UNITED AC 2010. [DOI: 10.3923/mj.2011.8.16] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Optimization of cellulase production by Aspergillus nidulans: application in the biosoftening of cotton fibers. World J Microbiol Biotechnol 2010. [DOI: 10.1007/s11274-010-0431-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Carboxymethylcellulase production by the anaerobic rumen fungusNeocallimastix sp. GMLF7. ANN MICROBIOL 2008. [DOI: 10.1007/bf03179454] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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