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John AJ, Selvarajan E. Ionic liquid-assisted pretreatment of lignocellulosic biomass using purified Streptomyces MS2A cellulase for bioethanol production. Int J Biol Macromol 2024; 270:132149. [PMID: 38740158 DOI: 10.1016/j.ijbiomac.2024.132149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 04/08/2024] [Accepted: 05/05/2024] [Indexed: 05/16/2024]
Abstract
In recent years, the process of producing bioethanol from lignocellulosic biomass through biorefining has become increasingly important. However, to obtain a high yield of ethanol, the complex structures in the feedstock must be broken down into simple sugars. A cost-effective and innovative method for achieving this is ionic liquid pre-treatment, which is widely used to efficiently hydrolyze the lignocellulosic material. The study aims to produce a significant profusion of bioethanol via catalytic hydrolysis of ionic liquid-treated lignocellulose biomass. The current study reports the purification of Streptomyces sp. MS2A cellulase via ultrafiltration and gel permeation chromatography. The kinetic parameters and the biochemical nature of the purified cellulase were analyzed for the effective breakdown of the EMIM[OAC] treated lignocellulose chain. The two-step cellulase purification resulted in 6.28 and 12.44 purification folds. The purified cellulase shows a Km value of 0.82 ± 0.21 mM, and a Vmax value of 85.59 ± 8.87 μmol min-1 mg-1 with the catalytic efficiency of 1.027 S-1. The thermodynamic parameters like ΔH, ΔS, and ΔG of the system were studied along with the thermal deactivation kinetics of cellulase. The optimal temperature and pH of the purified cellulase enzyme for hydrolysis was found to be 40 °C and 7. The rice husk and wheat husk used in this study were pretreated with the EMIM [OAC] ionic liquid and the change in the structure of lignocellulosic biomass was observed via HRSEM. The ionic liquid treated biomass showed the highest catalytic hydrolysis yield of 106.66 ± 0.19 mol/ml on the third day. The obtained glucose was fermented with Saccharomyces cerevisiae to yield 23.43 g of ethanol/l of glucose from the rice husk (RH) and 24.28 g of ethanol/l of glucose from the wheat husk (WH).
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Affiliation(s)
- Ashwini J John
- Department of Genetic Engineering, School of Bioengineering, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, India
| | - Ethiraj Selvarajan
- Department of Genetic Engineering, School of Bioengineering, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, India.
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Alananbeh KM, Alkfoof R, Muhaidat R, Massadeh M. Production of Xylanase by Trichoderma Species Growing on Olive Mill Pomace and Barley Bran in a Packed-Bed Bioreactor. J Fungi (Basel) 2024; 10:49. [PMID: 38248958 PMCID: PMC10817328 DOI: 10.3390/jof10010049] [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: 11/11/2023] [Revised: 12/27/2023] [Accepted: 12/29/2023] [Indexed: 01/23/2024] Open
Abstract
Xylanases are hydrolytic enzymes that have tremendous applications in different sectors of life, but the high cost of their production has limited their use. One solution to reduce costs and enhance xylanase production is the use of agro-wastes as a substrate in fungal cultures. In this study, olive mill pomace (OMP) and barley bran (BB) were used as carbon sources and possible inducers of xylanase production by three species of Trichoderma (atroviride, harzianum, and longibrachiatum), one major xylanase producer. The experiments were conducted under a solid-state fermentation system (SSF) in flask cultures and a packed-bed bioreactor. Cultures of OMP and BB were optimized by examining different ratios of OMP and BB, varied particle sizes, and inoculum size for the three species of Trichoderma. The ratio of 8:2 OMP and BB yielded the highest xylanase activity, with a particle size of 1 mm at 29 °C and an inoculum size of 1 × 107 spores/mL. Studying the time profile of the process revealed that xylanase activity was highest after seven days of incubation in flask SSF cultures (1.779 U/mL) and after three days in a packed-bed bioreactor (1.828 U/mL). The maximum percentage of OMP degradation recorded was about 15% in the cultures of T. harzianum flask SSF cultures, compared to about 11% in T. longibrachiatum bioreactor cultures. Ammonium sulfate precipitation and dialysis experiments showed that Xylane enzyme activity ranged from 0.274 U/mL in T. harzianum to 0.837 U/mL in T. atroviride when crude extract was used, with the highest activity (0.628 U/mL) at 60% saturation. Xylose was the main sugar released in all purified fractions, with the G-50 and G-75 fractions showing the maximum units of xylanase.
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Affiliation(s)
- Kholoud M. Alananbeh
- Department of Plant Protection, School of Agriculture, The University of Jordan, Amman 11942, Jordan
| | - Rana Alkfoof
- Department of Biological Sciences, Faculty of Science, Yarmouk University, Irbid P.O. Box 21163, Jordan; (R.A.); (R.M.)
| | - Riyadh Muhaidat
- Department of Biological Sciences, Faculty of Science, Yarmouk University, Irbid P.O. Box 21163, Jordan; (R.A.); (R.M.)
| | - Muhannad Massadeh
- Department of Biology and Biotechnology, Faculty of Science, The Hashemite University, Zarqa P.O. Box 11315, Jordan
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Wu Q, Zhang C, Zhu W, Lu H, Li X, Yang Y, Xu Y, Li W. Improved thermostability, acid tolerance as well as catalytic efficiency of Streptomyces rameus L2001 GH11 xylanase by N-terminal replacement. Enzyme Microb Technol 2023; 162:110143. [DOI: 10.1016/j.enzmictec.2022.110143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 10/12/2022] [Accepted: 10/14/2022] [Indexed: 11/13/2022]
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Victoria Gautério G, Amorim C, Silvério SC, Cardoso BB, Ballesteros LF, Alves JI, Alcina Pereira M, Silva SP, Coelho E, Coimbra MA, Juliano Kalil S, Rodrigues LR. Hydrolysates containing xylooligosaccharides produced by different strategies: Structural characterization, antioxidant and prebiotic activities. Food Chem 2022; 391:133231. [PMID: 35613528 DOI: 10.1016/j.foodchem.2022.133231] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 05/08/2022] [Accepted: 05/14/2022] [Indexed: 12/31/2022]
Abstract
This study explores the structural characterization, antioxidant and prebiotic activities of hydrolysates containing xylooligosaccharides (XOS) produced by different strategies: direct fermentation of beechwood xylan (FermBX) and enzymatic treatment of beechwood (EnzBX) and rice husk (EnzRH) xylans. EnzBX and EnzRH showed XOS with a backbone of (1 → 4)-linked-xylopyranosyl residues and branches of arabinose, galactose, and uronic acids. FermBX presented the highest content of total phenolic compounds (14 mg GAE/g) and flavonoids (0.6 mg QE/g), which may contribute to its antioxidant capacity -39.1 μmol TE/g (DPPH), 45.7 μmol TE/g (ABTS), and 79.9 μmol Fe II/g (FRAP). The fermentation of hydrolysates decreased the abundance of microorganisms associated with intestinal diseases from Eubacteriales, Desulfovibrionales and Methanobacteriales orders, while stimulating the growth of organisms belonging to Bacteroides, Megamonas and Limosilactobacillus genera. The production of short-chain fatty acids, ammonia, and CO2 suggested the prebiotic potential. In conclusion, hydrolysates without previous purification and obtained from non-chemical approaches demonstrated promising biological activities for further food applications.
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Affiliation(s)
| | - Cláudia Amorim
- CEB-Centre of Biological Engineering, Universidade do Minho, 4710-057 Braga, Portugal; LABBELS -Associate Laboratory, Braga/Guimarães, Portugal
| | - Sara C Silvério
- CEB-Centre of Biological Engineering, Universidade do Minho, 4710-057 Braga, Portugal; LABBELS -Associate Laboratory, Braga/Guimarães, Portugal
| | - Beatriz B Cardoso
- CEB-Centre of Biological Engineering, Universidade do Minho, 4710-057 Braga, Portugal; LABBELS -Associate Laboratory, Braga/Guimarães, Portugal
| | - Lina F Ballesteros
- CEB-Centre of Biological Engineering, Universidade do Minho, 4710-057 Braga, Portugal; LABBELS -Associate Laboratory, Braga/Guimarães, Portugal
| | - Joana I Alves
- CEB-Centre of Biological Engineering, Universidade do Minho, 4710-057 Braga, Portugal; LABBELS -Associate Laboratory, Braga/Guimarães, Portugal
| | - Maria Alcina Pereira
- CEB-Centre of Biological Engineering, Universidade do Minho, 4710-057 Braga, Portugal; LABBELS -Associate Laboratory, Braga/Guimarães, Portugal
| | - Soraia P Silva
- LAQV-REQUIMTE, Departamento de Química, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Elisabete Coelho
- LAQV-REQUIMTE, Departamento de Química, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Manuel A Coimbra
- LAQV-REQUIMTE, Departamento de Química, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Susana Juliano Kalil
- School of Chemistry and Food, Universidade Federal do Rio Grande, 96203-900 Rio Grande, Brazil
| | - Lígia R Rodrigues
- CEB-Centre of Biological Engineering, Universidade do Minho, 4710-057 Braga, Portugal
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Thakur V, Kumar V, Kumar V, Singh D. Xylooligosaccharides production using multi-substrate specific xylanases secreted by a psychrotolerant Paenibacillus sp. PCH8. CARBOHYDRATE POLYMER TECHNOLOGIES AND APPLICATIONS 2022. [DOI: 10.1016/j.carpta.2022.100215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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Pan K, Jin S, Wang Y, Yu Z, Sun J, Liu T, Zhang Z, Zhang T, Li Z, Zhao J. Crucial Residues of C-Terminal Oligopeptide C60 to Improve the Yield of Prebiotic Xylooligosaccharides by Truncated Mutation. Foods 2022; 11:foods11060862. [PMID: 35327284 PMCID: PMC8954191 DOI: 10.3390/foods11060862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/08/2022] [Accepted: 03/12/2022] [Indexed: 12/04/2022] Open
Abstract
Increasing the yields of short xylooligosaccharides by enzymatic production is efficient to improve prebiotic effects. Previously, C-terminal oligopeptide C60 was found to accelerate short xylooligosaccharides. Herein, in order to further understand the molecular mechanism of C60, the sequence analysis firstly showed that C60 displays typical properties of a linker (rich in proline/alanine/glycine/glutamine/arginine, 8.33–20.00%). C60 shared the highest identity with the N-terminal region of esterase (98.33%) and high identity with the linker between xylanase and esterase from Prevotella sp. (56.50%), it is speculated to originate from an early linker between XynA and another domain. Besides, structure simulation showed that C60 enhances the molecular interactions between substrate and active residues to improve catalytic efficiency. Moreover, three truncated variants with different lengths of C-terminal regions were successfully generated in Escherichia coli. The specific activities of variants were 6.44–10.24 fold of that of XynA-Tr, and their optimal temperature and pH were the same as XynA-Tr. Three truncated variants released more xylooligosaccharides, especially xylobiose (46.33, 43.41, and 49.60%), than XynA-Tr (32.43%). These results are helpful to understand the molecular mechanism of C60, and also provide new insight to improve the yields of short xylooligosaccharides by molecular modification at the terminal of xylanases.
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Affiliation(s)
- Kungang Pan
- Qilu Institute of Technology, School of Chemical and Biological Engineering, Jinan 250200, China;
- Key Laboratory of Industrial Fermentation Microbiology of Ministry of Education & Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China; (S.J.); (Y.W.); (Z.Y.); (J.S.); (T.L.); (Z.Z.); (T.Z.)
| | - Shanzheng Jin
- Key Laboratory of Industrial Fermentation Microbiology of Ministry of Education & Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China; (S.J.); (Y.W.); (Z.Y.); (J.S.); (T.L.); (Z.Z.); (T.Z.)
| | - Yue Wang
- Key Laboratory of Industrial Fermentation Microbiology of Ministry of Education & Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China; (S.J.); (Y.W.); (Z.Y.); (J.S.); (T.L.); (Z.Z.); (T.Z.)
| | - Zhao Yu
- Key Laboratory of Industrial Fermentation Microbiology of Ministry of Education & Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China; (S.J.); (Y.W.); (Z.Y.); (J.S.); (T.L.); (Z.Z.); (T.Z.)
| | - Junhao Sun
- Key Laboratory of Industrial Fermentation Microbiology of Ministry of Education & Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China; (S.J.); (Y.W.); (Z.Y.); (J.S.); (T.L.); (Z.Z.); (T.Z.)
| | - Tianhui Liu
- Key Laboratory of Industrial Fermentation Microbiology of Ministry of Education & Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China; (S.J.); (Y.W.); (Z.Y.); (J.S.); (T.L.); (Z.Z.); (T.Z.)
| | - Zhengjie Zhang
- Key Laboratory of Industrial Fermentation Microbiology of Ministry of Education & Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China; (S.J.); (Y.W.); (Z.Y.); (J.S.); (T.L.); (Z.Z.); (T.Z.)
| | - Tongcun Zhang
- Key Laboratory of Industrial Fermentation Microbiology of Ministry of Education & Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China; (S.J.); (Y.W.); (Z.Y.); (J.S.); (T.L.); (Z.Z.); (T.Z.)
| | - Zhongyuan Li
- Key Laboratory of Industrial Fermentation Microbiology of Ministry of Education & Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China; (S.J.); (Y.W.); (Z.Y.); (J.S.); (T.L.); (Z.Z.); (T.Z.)
- Correspondence: (Z.L.); (J.Z.)
| | - Junqi Zhao
- Qilu Institute of Technology, School of Chemical and Biological Engineering, Jinan 250200, China;
- Correspondence: (Z.L.); (J.Z.)
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Purification of xylanases from Aureobasidium pullulans CCT 1261 and its application in the production of xylooligosaccharides. World J Microbiol Biotechnol 2022; 38:52. [DOI: 10.1007/s11274-022-03240-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 01/31/2022] [Indexed: 11/27/2022]
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Lemes AC, Egea MB, de Oliveira Filho JG, Gautério GV, Ribeiro BD, Coelho MAZ. Biological Approaches for Extraction of Bioactive Compounds From Agro-industrial By-products: A Review. Front Bioeng Biotechnol 2022; 9:802543. [PMID: 35155407 PMCID: PMC8829320 DOI: 10.3389/fbioe.2021.802543] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 12/14/2021] [Indexed: 12/17/2022] Open
Abstract
Bioactive compounds can provide health benefits beyond the nutritional value and are originally present or added to food matrices. However, because they are part of the food matrices, most bioactive compounds remain in agroindustrial by-products. Agro-industrial by-products are generated in large quantities throughout the food production chain and can—when not properly treated—affect the environment, the profit, and the proper and nutritional distribution of food to people. Thus, it is important to adopt processes that increase the use of these agroindustrial by-products, including biological approaches, which can enhance the extraction and obtention of bioactive compounds, which enables their application in food and pharmaceutical industries. Biological processes have several advantages compared to nonbiological processes, including the provision of extracts with high quality and bioactivity, as well as extracts that present low toxicity and environmental impact. Among biological approaches, extraction from enzymes and fermentation stand out as tools for obtaining bioactive compounds from various agro-industrial wastes. In this sense, this article provides an overview of the main bioactive components found in agroindustrial by-products and the biological strategies for their extraction. We also provide information to enhance the use of these bioactive compounds, especially for the food and pharmaceutical industries.
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Affiliation(s)
- Ailton Cesar Lemes
- Department of Biochemical Engineering, School of Chemistry, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- *Correspondence: Ailton Cesar Lemes, ; Maria Alice Zarur Coelho,
| | | | | | - Gabrielle Victoria Gautério
- Department of Biochemical Engineering, School of Chemistry, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Bernardo Dias Ribeiro
- Department of Biochemical Engineering, School of Chemistry, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Maria Alice Zarur Coelho
- Department of Biochemical Engineering, School of Chemistry, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- *Correspondence: Ailton Cesar Lemes, ; Maria Alice Zarur Coelho,
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Gautério GV, Hübner T, Ribeiro TDR, Ziotti APM, Kalil SJ. Xylooligosaccharide Production with Low Xylose Release Using Crude Xylanase from Aureobasidium pullulans: Effect of the Enzymatic Hydrolysis Parameters. Appl Biochem Biotechnol 2021; 194:862-881. [PMID: 34550500 DOI: 10.1007/s12010-021-03658-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 09/03/2021] [Indexed: 11/29/2022]
Abstract
Xylooligosaccharides (XOS) are non-digestible and fermentable oligomers that stand out for their efficient production by enzymatic hydrolysis and beneficial effects on human health. This study aimed to investigate the influence of the main reaction parameters of the beechwood xylan hydrolysis using crude xylanase from Aureobasidium pullulans CCT 1261, thus achieving the maximum XOS production. The effects of temperature (40 to 50 °C), reaction time (12 to 48 h), type of agitation, substrate concentration (1 to 6%, w/v), xylanase loading (100 to 300 U/g xylan), and pH (4.0 to 6.0) on the XOS production were fully evaluated. The most suitable conditions for XOS production included orbital shaking of 180 rpm, 40 °C, and 24 h of reaction. High contents of total XOS (10.1 mg/mL) and XOS with degree of polymerization (DP) of 2-3 (9.7 mg/mL), besides to a high percentage of XOS (99.1%), were obtained at 6% (w/v) of beechwood xylan, xylanase loading of 260 U/g xylan, and pH 6.0. The establishment of the best hydrolysis conditions allowed increasing both the content of total XOS 1.5-fold and the percentage of XOS by 9.4%, when compared to the initial production (6.7 mg/mL and 89.7%, respectively). Thus, this study established an efficient enzymatic hydrolysis process that results in a hydrolysate containing XOS with potential prebiotic character (i.e., rich in XOS with DP 2-3) and low xylose amounts.
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Affiliation(s)
| | - Tamires Hübner
- Federal University of Rio Grande, School of Chemistry and Food, Rio Grande, 96203-900, Brazil
| | - Tairine da Rosa Ribeiro
- Federal University of Rio Grande, School of Chemistry and Food, Rio Grande, 96203-900, Brazil
| | | | - Susana Juliano Kalil
- Federal University of Rio Grande, School of Chemistry and Food, Rio Grande, 96203-900, Brazil
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