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Urgessa OE, Koyamo R, Dinka H, Tefese K, Gemeda MT. Review on Desirable Microbial Phytases as a Poultry Feed Additive: Their Sources, Production, Enzymatic Evaluation, Market Size, and Regulation. Int J Microbiol 2024; 2024:9400374. [PMID: 38962397 PMCID: PMC11221984 DOI: 10.1155/2024/9400374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 11/27/2023] [Accepted: 05/14/2024] [Indexed: 07/05/2024] Open
Abstract
Poultry's digestive tract lacks hydrolytic phytase enzymes, which results in chelation of dietary minerals, vital amino acids, proteins, and carbohydrates, phytate-phosphate unavailability, and contamination of the environment due to phosphorus. Therefore, it is necessary to use exogenous microbial phytases as feed additive to chicken feed to catalyze the hydrolysis of dietary phytate. Potential sources of microbial isolates that produce desired phytases for chicken feed supplementation have been isolated from agricultural croplands. It is achievable to isolate phytase-producing bacteria isolates using both broth and agar phytase screening media. Potential substrates for submerged fermentation (SmF) for bacterial phytase production and solid-state fermentation (SSF) for fungal phytase production include rice and wheat bran. Following fermentation, saturated ammonium sulphate precipitation is typically used to partially purify microbial culture filtrate. The precipitate is then desalted. Measurements of the pH optimum and stability, temperature optimum and stability, metal ions stability, specificity and affinity to target substrate, proteolysis resistance, storage stability, and in vitro feed dephosphorylation are used to perform an enzymatic evaluation of phytase as an additive for poultry feed. The growth of the feed phytase market is primarily due to the expansion of chicken farms to meet the demand for meat and eggs from humans. The Food and Drug Administration in the USA and the European Food and Safety Authority are primarily in charge of putting rules pertaining to feed phytase use in chicken feed into effect. Conclusively, important components of the production of phytase additives for poultry feed include identifying a reliable source for potential microbe isolation, selecting an economical method of phytase production, thoroughly characterizing the biochemical properties of phytase, and comprehending the size and regulation of the current feed phytase market.
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Affiliation(s)
- Olyad Erba Urgessa
- School of Biological Sciences and Biotechnology, College of Natural and Computational Sciences, Haramaya University, Dire Dawa, Ethiopia
- Department of Applied Biology, School of Applied Natural Science, Adama Science and Technology University, Adama, Ethiopia
| | - Rufael Koyamo
- Department of Biology, College of Natural and Computational Sciences, Oda Bultum University, Chiro, Ethiopia
| | - Hunduma Dinka
- Department of Applied Biology, School of Applied Natural Science, Adama Science and Technology University, Adama, Ethiopia
| | - Ketema Tefese
- Department of Applied Biology, School of Applied Natural Science, Adama Science and Technology University, Adama, Ethiopia
- Institute of Pharmaceutical Science, Adama Science and Technology University, Adama, Ethiopia
| | - Mesfin Tafesse Gemeda
- Biotechnology and Bioprocess Center of Excellence, Addis Ababa Science and Technology University, Addis Ababa, Ethiopia
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Battisti JA, Rocha GB, Rasbold LM, Delai VM, Costa MSSDM, Kadowaki MK, da Conceição Silva JL, Simão RDCG, Bifano TD, Maller A. Purification, biochemical characterization, and biotechnological applications of a multifunctional enzyme from the Thermoascus aurantiacus PI3S3 strain. Sci Rep 2024; 14:5037. [PMID: 38424450 PMCID: PMC10904743 DOI: 10.1038/s41598-024-55665-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 02/26/2024] [Indexed: 03/02/2024] Open
Abstract
The filamentous Thermoascus aurantiacus fungus characterized by its thermophilic nature, is recognized as an exceptional producer of various enzymes with biotechnological applications. This study aimed to explore biotechnological applications using polygalacturonase (PG) derived from the Thermoascus aurantiacus PI3S3 strain. PG production was achieved through submerged fermentation and subsequent purification via ion-exchange chromatography and gel filtration methods. The crude extract exhibited a diverse spectrum of enzymatic activities including amylase, cellulase, invertase, pectinase, and xylanase. Notably, it demonstrated the ability to hydrolyze sugarcane bagasse biomass, corn residue, and animal feed. The purified PG had a molecular mass of 36 kDa, with optimal activity observed at pH 4.5 and 70 °C. The activation energy (Ea) was calculated as 0.513 kJ mol-1, highlighting activation in the presence of Ca2+. Additionally, it displayed apparent Km, Vmax, and Kcat values of at 0.19 mg mL-1, 273.10 U mL-1, and 168.52 s-1, respectively, for hydrolyzing polygalacturonic acid. This multifunctional PG exhibited activities such as denim biopolishing, apple juice clarification, and demonstrated both endo- and exo-polygalacturonase activities. Furthermore, it displayed versatility by hydrolyzing polygalacturonic acid, carboxymethylcellulose, and xylan. The T. aurantiacus PI3S3 multifunctional polygalacturonase showed heightened activity under acidic pH, elevated temperatures, and in the presence of calcium. Its multifunctional nature distinguished it from other PGs, significantly expanding its potential for diverse biotechnological applications.
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Affiliation(s)
- Juliane Almeida Battisti
- Centro de Ciências Médicas e Farmacêuticas, Universidade Estadual do Oeste do Paraná, 2069 Universitária Street, Faculdade, Cascavel, Paraná, 85819-110, Brazil
| | - Giovane Bruno Rocha
- Centro de Ciências Médicas e Farmacêuticas, Universidade Estadual do Oeste do Paraná, 2069 Universitária Street, Faculdade, Cascavel, Paraná, 85819-110, Brazil
| | - Letícia Mara Rasbold
- Centro de Ciências Médicas e Farmacêuticas, Universidade Estadual do Oeste do Paraná, 2069 Universitária Street, Faculdade, Cascavel, Paraná, 85819-110, Brazil
| | - Vitória Maciel Delai
- Centro de Ciências Médicas e Farmacêuticas, Universidade Estadual do Oeste do Paraná, 2069 Universitária Street, Faculdade, Cascavel, Paraná, 85819-110, Brazil
| | | | - Marina Kimiko Kadowaki
- Centro de Ciências Médicas e Farmacêuticas, Universidade Estadual do Oeste do Paraná, 2069 Universitária Street, Faculdade, Cascavel, Paraná, 85819-110, Brazil
| | - José Luis da Conceição Silva
- Centro de Ciências Médicas e Farmacêuticas, Universidade Estadual do Oeste do Paraná, 2069 Universitária Street, Faculdade, Cascavel, Paraná, 85819-110, Brazil
| | - Rita de Cássia Garcia Simão
- Centro de Ciências Médicas e Farmacêuticas, Universidade Estadual do Oeste do Paraná, 2069 Universitária Street, Faculdade, Cascavel, Paraná, 85819-110, Brazil
| | - Thaís Duarte Bifano
- Centro de Ciências Médicas e Farmacêuticas, Universidade Estadual do Oeste do Paraná, 2069 Universitária Street, Faculdade, Cascavel, Paraná, 85819-110, Brazil
| | - Alexandre Maller
- Centro de Ciências Médicas e Farmacêuticas, Universidade Estadual do Oeste do Paraná, 2069 Universitária Street, Faculdade, Cascavel, Paraná, 85819-110, Brazil.
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Fernandes de Souza H, Aguiar Borges L, Dédalo Di Próspero Gonçalves V, Vitor dos Santos J, Sousa Bessa M, Fronja Carosia M, Vieira de Carvalho M, Viana Brandi I, Setsuko Kamimura E. Recent advances in the application of xylanases in the food industry and production by actinobacteria: a review. Food Res Int 2022; 162:112103. [DOI: 10.1016/j.foodres.2022.112103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 10/26/2022] [Accepted: 10/28/2022] [Indexed: 11/09/2022]
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Oliveira Monteiro LM, Vici AC, Messias JM, Heinen PR, Pinheiro VE, Vargas Rechia CG, Buckeridge MS, Teixeira de Moraes Polizeli MDL. Increased Malbranchea pulchella β-glucosidase production and its application in agroindustrial residue hydrolysis: A research based on experimental designs. ACTA ACUST UNITED AC 2021; 30:e00618. [PMID: 33981591 PMCID: PMC8081928 DOI: 10.1016/j.btre.2021.e00618] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 09/07/2020] [Accepted: 04/08/2021] [Indexed: 11/25/2022]
Abstract
β-Glucosidases are a limiting factor for the biomass saccharification. β-Glucosidase was produced from thermophilic fungus Malbranchea pulchella. Enzyme production was optimized using composite central designs and response surface. Optimal production was obtained with 0.6 % cellobiose plus 4.0 % sugarcane bagasse (SCB). Application of Mixture Design with SCB, soybean hull and barley bagasse were tested.
β-Glucosidases are a limiting factor in the conversion of cellulose to glucose for the subsequent ethanol production. Here, β-glucosidase production by Malbranchea pulchella was optimized using Composite Central Designs and Response Surface Methodologies from a medium designed. The coefficient of determination (R2) was 0.9960, F-value was very high, and the lack of fit was found to be non-significant. This indicates a statistic valid and predictive result. M. pulchella enzymatic extract was successfully tested as an enzymatic cocktail in a mixture design using sugarcane bagasse, soybean hull and barley bagasse. We proved that the optimization of the β-glucosidase production and the application in hydrolysis using unexpansive biomass and agricultural wastes can be accomplished by means of statistical methodologies. The strategy presented here can be useful for the improvement of enzyme production and the hydrolysis process, arising as an alternative for bioeconomy.
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Affiliation(s)
- Lummy Maria Oliveira Monteiro
- Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Bandeirantes Av., 3.900, 14049-900, Ribeirão Preto, SP, Brazil
| | - Ana Claudia Vici
- Faculdade de Filosofia Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Bandeirantes Av., 3.900, 14040-900, Ribeirão Preto, SP, Brazil
| | - Josana Maria Messias
- Faculdade de Filosofia Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Bandeirantes Av., 3.900, 14040-900, Ribeirão Preto, SP, Brazil
| | - Paulo Ricardo Heinen
- Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Bandeirantes Av., 3.900, 14049-900, Ribeirão Preto, SP, Brazil
| | - Vanessa Elisa Pinheiro
- Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Bandeirantes Av., 3.900, 14049-900, Ribeirão Preto, SP, Brazil
| | - Carem Gledes Vargas Rechia
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Bandeirantes Av., 3.900, 14040-903, Ribeirão Preto, SP, Brazil
| | - Marcos S Buckeridge
- Instituto de Biociências, Universidade de São Paulo, Matão Street, 277, 05508-090, São Paulo, SP, Brazil
| | - Maria de Lourdes Teixeira de Moraes Polizeli
- Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Bandeirantes Av., 3.900, 14049-900, Ribeirão Preto, SP, Brazil.,Faculdade de Filosofia Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Bandeirantes Av., 3.900, 14040-900, Ribeirão Preto, SP, Brazil
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Bioprocessing of Agricultural Residues as Substrates and Optimal Conditions for Phytase Production of Chestnut Mushroom, Pholiota adiposa, in Solid State Fermentation. J Fungi (Basel) 2020; 6:jof6040384. [PMID: 33371491 PMCID: PMC7767570 DOI: 10.3390/jof6040384] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 12/17/2020] [Accepted: 12/18/2020] [Indexed: 12/23/2022] Open
Abstract
Phytase is an enzyme that breaks down phytates to release phosphorus in an available form. This enzyme plays an important role in animals, especially monogastric animals. It serves to improve phytate digestion along with phosphorus absorption, which are required for optimal growth performance and health. In this study, five mushroom species (Amauroderma rugosum SDBR-CMU-A83, Ganoderma mastoporum SDBR-CMU-NK0244, Marusmius sp.1 SDBR-CMU-NK0215, Pholiota adiposa SDBR-CMU-R32 and Piptoporellus triqueter SDBR-CMU-P234) out of 27 mushroom species displayed positive phytase production by agar plate assay. Consequently, these five mushroom species were selected for determination of their potential ability to produce phytase under solid-state fermentation using five agricultural residues (coffee parchment, oil palm empty fruit bunches, rice bran, sawdust, and water hyacinth) as substrates. The highest yield of phytase production (17.02 ± 0.92 units/gram dry substrate) was obtained after one week of fermentation. Optimization for phytase production was determined by statistical approaches using a Plackett-Burman design to screen ten parameters of relevant substrate components. Two significant parameters, the amount of water hyacinth and the moisture content, were found to affect the production process of phytase. Furthermore, the optimal temperature, pH value, and fermentation period were evaluated. The results indicated that the highest degree of phytase production at 53.66 ± 1.68 units/gram dry substrate (3.15-fold increase) was obtained in water hyacinth containing 85% moisture content by addition with a suitable basal liquid medium at a pH value of 6.5 after being incubated at 30 °C for seven days. The crude phytase of P. adiposa was precipitated and the precipitated extract was then used to determine partial characterizations. The precipitated extract displayed high activities after exposure to conditions of 42 °C and pH 5.0. Furthermore, Fe2+ enhanced phytase activity and precipitated extract displayed the best stability at a pH value of 8.0 and a temperature of 4 °C.
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Alagawany M, Ibrahim ZA, Abdel-Latif EA, Reda FM. Use of Aspergillus japonicas culture filtrate as a feed additive in quail breeder’s nutrition. ITALIAN JOURNAL OF ANIMAL SCIENCE 2020. [DOI: 10.1080/1828051x.2020.1837022] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Mahmoud Alagawany
- Department of Poultry, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
| | - Zenat A. Ibrahim
- Department of Poultry, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
| | - Enaam A. Abdel-Latif
- Department of Poultry, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
| | - Fayiz M. Reda
- Department of Poultry, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
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Free and immobilized Aspergillus oryzae SBS50 producing protease-resistant and thermostable phytase. 3 Biotech 2017; 7:213. [PMID: 28669072 DOI: 10.1007/s13205-017-0804-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 04/06/2017] [Indexed: 10/19/2022] Open
Abstract
Optimization for enhanced phytase production by Aspergillus oryzae SBS50 in submerged fermentation was investigated using Taguchi design. In first step design, starch, beef extract, magnesium sulphate, ferrous sulphate and Tween 80 were identified as significant factors affecting phytase production. These significant factors were further optimized at four different levels using a second Taguchi design and were observed that 1% starch, 2% beef extact, 3% Tween 80, 0.1% magnesium sulphate and 0.225% ferrous sulphate supported maximum phytase production (47,432 U/L). The use of Taguchi designed experiments resulted in 14.9-fold enhancement in phytase production compared to the medium optimized by 'one variable at a time' approach. Furthermore, 4% agar immobilized conidiospores of A. oryzae supported high phytase production compared with free cells and other matrices. Agar-immobilized conidiospores resulted in sustained phytase production up to eight repeated batch cycles followed by a decrease in enzyme titres.
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Perissini-Lopes B, Egea TC, Monteiro DA, Vici AC, Da Silva DGH, Lisboa DCDO, de Almeida EA, Parsons JR, Da Silva R, Gomes E. Evaluation of Diuron Tolerance and Biotransformation by Fungi from a Sugar Cane Plantation Sandy-Loam Soil. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:9268-9275. [PMID: 27960295 DOI: 10.1021/acs.jafc.6b03247] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Microorganisms capable of degrading herbicides are essential to minimize the amount of chemical compounds that may leach into other environments. This work aimed to study the potential of sandy-loam soil fungi to tolerate the herbicide Herburon (50% diuron) and to degrade the active ingredient diuron. Verticillium sp. F04, Trichoderma virens F28, and Cunninghamella elegans B06 showed the highest growth in the presence of the herbicide. The evaluation of biotransformation showed that Aspergillus brasiliensis G08, Aspergillus sp. G25, and Cunninghamella elegans B06 had the greatest potential to degrade diuron. Statistical analysis demonstrated that glucose positively influences the potential of the microorganism to degrade diuron, indicating a cometabolic process. Due to metabolites founded by diuron biotransformation, it is indicated that the fungi are relevant in reducing the herbicide concentration in runoff, minimizing the environmental impact on surrounding ecosystems.
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Affiliation(s)
- Bruna Perissini-Lopes
- Universidade Estadual Paulista Julio de Mesquita Filho-Campus de São José do Rio Preto , Rua Cristóvão Colombo, 2265, Jardim Nazareth, São José do Rio Preto, São Paulo, Brazil 15054-000
| | - Tássia Chiachio Egea
- Universidade Estadual Paulista Julio de Mesquita Filho-Campus de São José do Rio Preto , Rua Cristóvão Colombo, 2265, Jardim Nazareth, São José do Rio Preto, São Paulo, Brazil 15054-000
| | - Diego Alves Monteiro
- Universidade Estadual Paulista Julio de Mesquita Filho-Campus de São José do Rio Preto , Rua Cristóvão Colombo, 2265, Jardim Nazareth, São José do Rio Preto, São Paulo, Brazil 15054-000
| | - Ana Cláudia Vici
- Universidade de São Paulo Faculdade de Medicina de Ribeirão Preto , Avenida Bandeirantes, 3900, Monte Alegre, Ribeirão Preto, São Paulo, Brazil 14040-900
| | - Danilo Grünig Humberto Da Silva
- Universidade Estadual Paulista Julio de Mesquita Filho-Campus de São José do Rio Preto , Rua Cristóvão Colombo, 2265, Jardim Nazareth, São José do Rio Preto, São Paulo, Brazil 15054-000
| | - Daniela Correa de Oliveira Lisboa
- Universidade Estadual Paulista Julio de Mesquita Filho-Campus de São José do Rio Preto , Rua Cristóvão Colombo, 2265, Jardim Nazareth, São José do Rio Preto, São Paulo, Brazil 15054-000
| | - Eduardo Alves de Almeida
- Universidade Estadual Paulista Julio de Mesquita Filho-Campus de São José do Rio Preto , Rua Cristóvão Colombo, 2265, Jardim Nazareth, São José do Rio Preto, São Paulo, Brazil 15054-000
| | - John Robert Parsons
- Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam , Nieuwe Achtergracht 199, 1018 WV Amsterdam, Netherlands
| | - Roberto Da Silva
- Universidade Estadual Paulista Julio de Mesquita Filho-Campus de São José do Rio Preto , Rua Cristóvão Colombo, 2265, Jardim Nazareth, São José do Rio Preto, São Paulo, Brazil 15054-000
| | - Eleni Gomes
- Universidade Estadual Paulista Julio de Mesquita Filho-Campus de São José do Rio Preto , Rua Cristóvão Colombo, 2265, Jardim Nazareth, São José do Rio Preto, São Paulo, Brazil 15054-000
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Maller A, de Quadros TCO, Junqueira OM, Graña AL, de Lima Montaldi AP, Alarcon RF, Jorge JA, de Lourdes T M Polizeli M. Biochemical effect of a histidine phosphatase acid (phytase) of Aspergillus japonicus var. Saito on performance and bony characteristics of broiler. SPRINGERPLUS 2016; 5:1418. [PMID: 27625972 PMCID: PMC4996818 DOI: 10.1186/s40064-016-3082-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Accepted: 08/15/2016] [Indexed: 11/10/2022]
Abstract
Phytases are enzymes that hydrolyze the ester linkage of phytic acid, releasing inositol and inorganic phosphate. The phytic acid (phytate) is a major form of phosphorus in plant foods. Knowing that diet for animal of production has the cereal base (corn and soybean), primarily, broilers need for an alternative to use of the phosphate present in these ingredients, since it does not naturally produce the enzyme phytase, which makes it available. The aims of this work was studding the safe supplementation of Aspergillus japonicus var. Saito crude phytase in feeding broilers and check the biochemical effect on performance and bones of these animals. The enzymatic extract did not have aflatoxins B1, B2, G2 and G1 and zearalenone and ochratoxin, and low concentrations of this extract did not have cytotoxic effects on cells derived from lung tissue. The in vivo experiments showed that the phytase supplied the available phosphate reduction in the broiler feed formulation, with a live weight, weight gain, feed intake, feed conversion, viability, productive efficiency index and carcass yield similar to the control test. Furthermore, the phytase supplementation favored the formation of bone structure and performance of the broilers. The results show the high biotechnological potential of A. japonicus phytase on broiler food supplementation to reduce phosphorus addition in the food formulation. So, this enzyme could be used as a commercial alternative to animal diet supplementation.
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Affiliation(s)
- Alexandre Maller
- Departamento de Bioquímica e Imunologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, A. Bandeirantes, 3900, Ribeirão Preto, SP 14040-901 Brazil
| | - Thays Cristina Oliveira de Quadros
- Departamento de Zootecnia, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista Júlio de Mesquita Filho, Jaboticabal, SP 16050-680 Brazil
| | - Otto M Junqueira
- Departamento de Zootecnia, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista Júlio de Mesquita Filho, Jaboticabal, SP 16050-680 Brazil
| | - Alfredo Lora Graña
- FATEC Indústria de Nutrição e Saúde Animal LTDA, Arujá, SP 07400-000 Brazil
| | - Ana Paula de Lima Montaldi
- Departamento de Zootecnia, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista Júlio de Mesquita Filho, Jaboticabal, SP 16050-680 Brazil
| | - Ricardo Fernandes Alarcon
- Departamento de Biologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP 14040-901 Brazil
| | - João Atílio Jorge
- Departamento de Biologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP 14040-901 Brazil
| | - Maria de Lourdes T M Polizeli
- Departamento de Biologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP 14040-901 Brazil
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Corrêa JM, Christi D, Torre CLD, Henn C, da Conceição-Silva JL, Kadowaki MK, Simão RDCG. High levels of β-xylosidase in Thermomyces lanuginosus: potential use for saccharification. Braz J Microbiol 2016; 47:680-90. [PMID: 27256169 PMCID: PMC4927647 DOI: 10.1016/j.bjm.2016.04.028] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Accepted: 02/20/2016] [Indexed: 12/03/2022] Open
Abstract
A new strain of Thermomyces lanuginosus was isolated from the Atlantic Forest biome, and its β-xylosidases optimization in response to agro-industrial residues was performed. Using statistical approach as a strategy for optimization, the induction of β-xylosidases activity was evaluated in residual corn straw, and improved so that the optimum condition achieved high β-xylosidases activities 1003 U/mL. According our known, this study is the first to show so high levels of β-xylosidases activities induction. In addition, the application of an experimental design with this microorganism to induce β-xylosidases has not been reported until the present work. The optimal conditions for the crude enzyme extract were pH 5.5 and 60 °C showing better thermostability at 55 °C. The saccharification ability of β-xylosidase in the presence of hemicellulose obtained from corn straw raw and xylan from beechwood substrates showed a xylo-oligosaccharide to xylose conversion yield of 80 and 50%, respectively, at 50 °C. Our data strongly indicated that the β-xylosidases activities was not subjected to the effects of potential enzyme inhibitors often produced during fermentation process. These data suggest the application of this enzyme studied for saccharification of hemicellulose, an abundant residue in the American continents, thus providing an interesting alternative for future tests for energy production.
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Affiliation(s)
| | | | | | - Caroline Henn
- Central Hidrelétrica de Itaipu, Itaipu Binacional, Foz do Iguaçu, PR, Brazil
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