1
|
Valorisation of multiple components from residual biomass for food and biofuel applications: A virtual biorefinery evaluation. FOOD AND BIOPRODUCTS PROCESSING 2023. [DOI: 10.1016/j.fbp.2023.02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
|
2
|
Selection of pretreatment method and mannanase enzyme to improve the functionality of palm kernel cake. J Biosci Bioeng 2022; 134:301-306. [PMID: 35970725 DOI: 10.1016/j.jbiosc.2022.06.016] [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: 11/19/2021] [Revised: 06/28/2022] [Accepted: 06/29/2022] [Indexed: 11/22/2022]
Abstract
Palm kernel cake (PKC) is a by-product of palm kernel oil extraction with moderate nutritional value, containing 30-35% β-mannan, which is indigestible, slows growth, and reduces feed efficiency. PKC can be improved by mannanase hydrolysis, but the effectiveness of mannanase is dependent on the microbial source. Thus, the effect of steam pretreatment and bacterial mannanases on PKC quality was investigated. PKC was pretreated by steaming and hydrolyzed in the small intestine by various mannanases. The contents of reducing sugar, total sugar, and protein release were measured. Steamed PKC had a significant increase in protein (16.95 ± 0.14 to 20.98 ± 0.13%) and a substantial decrease in hemicellulose (29.52 ± 0.44 to 3.46 ± 0.88%) and lignin (8.94 ± 0.28 to 1.40 ± 0.22%). Mannanases from Escherichia coli-KMAN-3 and E. coli-Man6.7 recorded the highest activities, followed by commercial mannanase, Bacillus circulans NT6.7 and B. amyloliquefaciens NT6.3 mannanases, orderly. B. circulans NT6.7 and B. amyloliquefaciens NT6.3 had multi-activities that include glucanase (3.10 ± 0.04% and 2.47 ± 0.02%) and amylase (1.74 ± 0.03% and 1.38 ± 0.04%), respectively. B. amyloliquefaciens NT6.3 mannanase hydrolyzed steamed PKC to release more reducing sugar, total sugar, and protein than hydrolyzed raw PKC. In raw and steamed PKC, B. amyloliquefaciens NT6.3 mannanase produced the highest reducing sugar release. As a result, steam pretreatment and mannanase hydrolysis, particularly from B. amyloliquefaciens, can be used to increase the functioning of PKC and develop new feed ingredients for monogastric animals at a reasonable cost.
Collapse
|
3
|
Pongchaiphol S, Suriyachai N, Hararak B, Raita M, Laosiripojana N, Champreda V. Physicochemical characteristics of organosolv lignins from different lignocellulosic agricultural wastes. Int J Biol Macromol 2022; 216:710-727. [PMID: 35803411 DOI: 10.1016/j.ijbiomac.2022.07.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 06/22/2022] [Accepted: 07/01/2022] [Indexed: 11/16/2022]
Abstract
Lignin is a promising alternative to petrochemical precursors for conversion to industrial-needed products. Organosolv lignins were extracted from different agricultural wastes including sugarcane bagasse (BG) and trash (ST), corncob (CC), eucalyptus wood (EW), pararubber woodchip (PRW), and palm wastes (palm kernel cake (PKC), palm fiber (PF), and palm kernel shell (PKS), representing different groups of lignin origins. Physicochemical characteristics of lignins were analyzed by several principal techniques. Most recovered lignin showed high purity of >90 % with trace sugar contamination, while lower purities were found for lignin from palm wastes. Hardwood lignins (EW and PRW) mainly contained guaiacyl (G) and syringyl (S) units with a minor fraction of p-hydroxyphenyl units (H) with high molecular weight, glass transition temperature, phenolic hydroxy group and low aliphatic hydroxy group. Grass-type lignins (BG, ST, CC) and palm lignins (PKC, PF, and PKS) contained three monolignols of H, G, and S units with lower molecular weights and C5-substituted hydroxy of S unit. Among the grass-type lignins, PKC lignin contained the highest nitrogen and lipophilic components with the lowest molecular weight, thermal stability, and glass transition temperature. This provides insights into properties of organosolv lignin as basis for their further applications in chemical, polymer and material industries.
Collapse
Affiliation(s)
- Suchat Pongchaiphol
- The Joint Graduate School for Energy and Environment (JGSEE), King Mongkut's University of Technology Thonburi, Prachauthit Road, Bangmod, Bangkok 10140, Thailand; BIOTEC-JGSEE Integrative Biorefinery Laboratory, Innovation Cluster 2 Building, Thailand Science Park, Phaholyothin Road, Khlong Luang, Pathumthani 12120, Thailand
| | - Nopparat Suriyachai
- BIOTEC-JGSEE Integrative Biorefinery Laboratory, Innovation Cluster 2 Building, Thailand Science Park, Phaholyothin Road, Khlong Luang, Pathumthani 12120, Thailand; School of Energy and Environment, University of Phayao, Tambon Maeka, Amphur Muang, Phayao 56000, Thailand
| | - Bongkot Hararak
- National Metal and Materials Technology Center (MTEC), 114 Thailand Science Park, Phaholyothin Road, Khlong Luang, Pathumthani 12120, Thailand
| | - Marisa Raita
- The Joint Graduate School for Energy and Environment (JGSEE), King Mongkut's University of Technology Thonburi, Prachauthit Road, Bangmod, Bangkok 10140, Thailand; BIOTEC-JGSEE Integrative Biorefinery Laboratory, Innovation Cluster 2 Building, Thailand Science Park, Phaholyothin Road, Khlong Luang, Pathumthani 12120, Thailand.
| | - Navadol Laosiripojana
- The Joint Graduate School for Energy and Environment (JGSEE), King Mongkut's University of Technology Thonburi, Prachauthit Road, Bangmod, Bangkok 10140, Thailand; BIOTEC-JGSEE Integrative Biorefinery Laboratory, Innovation Cluster 2 Building, Thailand Science Park, Phaholyothin Road, Khlong Luang, Pathumthani 12120, Thailand
| | - Verawat Champreda
- Biorefinery Technology and Bioproducts Research Group, National Center for Genetic Engineering and Biotechnology (BIOTEC), 113 Thailand Science Park, Phaholyothin Road, Khlong Luang, Pathumthani 12120, Thailand; BIOTEC-JGSEE Integrative Biorefinery Laboratory, Innovation Cluster 2 Building, Thailand Science Park, Phaholyothin Road, Khlong Luang, Pathumthani 12120, Thailand
| |
Collapse
|
4
|
Manno-Oligosaccharide Production from Biomass Hydrolysis by Using Endo-1,4-β-Mannanase (ManNj6-379) from Nonomuraea jabiensis ID06-379. Processes (Basel) 2022. [DOI: 10.3390/pr10020269] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
A novel endo-β-1,4-mannanase gene was cloned from a novel actinomycetes, Nonomuraea jabiensis ID06-379, isolated from soil, overexpressed as an extracellular protein (47.8 kDa) in Streptomyces lividans 1326. This new endo-1,4-β-mannanase gene (manNj6-379) is encoded by 445-amino acids. The ManNj6-379 consists of a 28-residue signal peptide and a carbohydrate-binding module of family 2 belonging to the glycoside hydrolase (GH) family 5, with 59–77% identity to GH5 mannan endo-1,4-β-mannanase. The recombinant ManNj6-379 displayed an optimal pH of 6.5 with pH stability ranging between 5.5 and 7.0 and was stable for 120 min at 50 °C and lower temperatures. The optimal temperature for activity was 70 °C. An enzymatic hydrolysis assay revealed that ManNj6-379 could hydrolyze commercial β-mannan and biomass containing mannan.
Collapse
|
5
|
Siva Sankari M, Vivekanandhan S, Misra M, Mohanty AK. Oil Cakes as Sustainable Agro‐Industrial Feedstock for Biocarbon Materials. CHEMBIOENG REVIEWS 2021. [DOI: 10.1002/cben.202100025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- M. Siva Sankari
- V. H. N. S. N. College (Autonomous) Virudhunagar Sustainable Materials and Nanotechnology Lab (SMNL), Department of Physics 626 001 Tamil Nadu India
| | - S. Vivekanandhan
- V. H. N. S. N. College (Autonomous) Virudhunagar Sustainable Materials and Nanotechnology Lab (SMNL), Department of Physics 626 001 Tamil Nadu India
| | - M. Misra
- University of Guelph, Crop Science Building Bioproducts Discovery and Development Centre (BDDC), Department of Plant Agriculture 117 Reynolds Walk N1G 1Y4 Guelph Ontario Canada
- University of Guelph, Thornbrough Building School of Engineering 80 South Ring Road E N1G 1Y4 Guelph, Ontario Canada
| | - A. K. Mohanty
- University of Guelph, Crop Science Building Bioproducts Discovery and Development Centre (BDDC), Department of Plant Agriculture 117 Reynolds Walk N1G 1Y4 Guelph Ontario Canada
- University of Guelph, Thornbrough Building School of Engineering 80 South Ring Road E N1G 1Y4 Guelph, Ontario Canada
| |
Collapse
|
6
|
Wongsirichot P, Muanruksa P, Kaewkannetra P, Winterburn J. Comprehensive optimization of tropical biomass hydrolysis for nitrogen-limited medium-chain polyhydroxyalkanoate synthesis. WASTE MANAGEMENT (NEW YORK, N.Y.) 2021; 128:221-231. [PMID: 34000692 DOI: 10.1016/j.wasman.2021.04.062] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 04/19/2021] [Accepted: 04/30/2021] [Indexed: 06/12/2023]
Abstract
Expanding the use of tropical biomass wastes for nitrogen-limited fermentation was investigated, specifically, the production of medium chain length polyhydroxyalkanoates. Comprehensive central composite design was conducted to assess pH, temperature, biomass solid loading, cellulase loading and amylase loading and their impact on the hydrolysis of palm, coconut and cassava wastes. Glucose yields of 33.3, 31.7 and 79.0% wt. with respect to total glucose were found for palm, coconut and cassava, respectively. Importantly, the impact on the total nitrogen derived during enzymatic hydrolysis of these tropical biomass was described for the first time. The level of nitrogen needs to be properly controlled as high nitrogen would result in low carbon to nitrogen ratio leading to low polyhydroxyalkanoates accumulation, but low nitrogen would hinder growth of the biopolymer producer. Maximum hydrolysate nitrogen, were 1.80, 1.55 and 0.871 g/l for palm, coconut and cassava, respectively. Using the surface responses, biomass media designed for high carbon-to-nitrogen were produced and validated using Pseudomonas putida. Low glucose-carbon to nitrogen were found for palm and coconut after scale-up, leading to the majority of their polyhydroxyalkanoates not being biomass-derived. However, cassava-derived biopolymers were successfully accumulated at 9.01 and 7.13% wt. for total medium chain length polyhydroxyalkanoates and 10-carbon polyhydroxyalkanoates, respectively. This study provides an important foundation for the expansion of tropical biomass wastes for biopolymer production and other nitrogen-limited applications in general.
Collapse
Affiliation(s)
- Phavit Wongsirichot
- Department of Chemical Engineering and Analytical Science, The University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Papasanee Muanruksa
- Department of Chemical Engineering and Analytical Science, The University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom; Department of Biotechnology, Faculty of Technology, Khon Kaen University, Mitraphap Road, Meuang, Khon kaen 40002, Thailand
| | - Pakawadee Kaewkannetra
- Department of Biotechnology, Faculty of Technology, Khon Kaen University, Mitraphap Road, Meuang, Khon kaen 40002, Thailand
| | - James Winterburn
- Department of Chemical Engineering and Analytical Science, The University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom.
| |
Collapse
|
7
|
Mohapatra BR. Characterization of β-mannanase extracted from a novel Streptomyces species Alg-S25 immobilized on chitosan nanoparticles. BIOTECHNOL BIOTEC EQ 2020. [DOI: 10.1080/13102818.2020.1858158] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Affiliation(s)
- Bidyut Ranjan Mohapatra
- Department of Biological and Chemical Sciences, The University of the West Indies, Bridgetown, Barbados
| |
Collapse
|
8
|
Identification and Biochemical Characterization of Major β-Mannanase in Talaromyces cellulolyticus Mannanolytic System. Appl Biochem Biotechnol 2020; 192:616-631. [DOI: 10.1007/s12010-020-03350-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 05/22/2020] [Indexed: 01/06/2023]
|
9
|
Lee SY, Sankaran R, Chew KW, Tan CH, Krishnamoorthy R, Chu DT, Show PL. Waste to bioenergy: a review on the recent conversion technologies. ACTA ACUST UNITED AC 2019. [DOI: 10.1186/s42500-019-0004-7] [Citation(s) in RCA: 159] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
10
|
von Freiesleben P, Moroz OV, Blagova E, Wiemann M, Spodsberg N, Agger JW, Davies GJ, Wilson KS, Stålbrand H, Meyer AS, Krogh KBRM. Crystal structure and substrate interactions of an unusual fungal non-CBM carrying GH26 endo-β-mannanase from Yunnania penicillata. Sci Rep 2019; 9:2266. [PMID: 30783168 PMCID: PMC6381184 DOI: 10.1038/s41598-019-38602-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 12/18/2018] [Indexed: 01/07/2023] Open
Abstract
Endo-β(1 → 4)-mannanases (endomannanases) catalyse degradation of β-mannans, an abundant class of plant polysaccharides. This study investigates structural features and substrate binding of YpenMan26A, a non-CBM carrying endomannanase from Yunnania penicillata. Structural and sequence comparisons to other fungal family GH26 endomannanases showed high sequence similarities and conserved binding residues, indicating that fungal GH26 endomannanases accommodate galactopyranosyl units in the -3 and -2 subsites. Two striking amino acid differences in the active site were found when the YpenMan26A structure was compared to a homology model of Wsp.Man26A from Westerdykella sp. and the sequences of nine other fungal GH26 endomannanases. Two YpenMan26A mutants, W110H and D37T, inspired by differences observed in Wsp.Man26A, produced a shift in how mannopentaose bound across the active site cleft and a decreased affinity for galactose in the -2 subsite, respectively, compared to YpenMan26A. YpenMan26A was moreover found to have a flexible surface loop in the position where PansMan26A from Podospora anserina has an α-helix (α9) which interacts with its family 35 CBM. Sequence alignment inferred that the core structure of fungal GH26 endomannanases differ depending on the natural presence of this type of CBM. These new findings have implications for selecting and optimising these enzymes for galactomannandegradation.
Collapse
Affiliation(s)
- Pernille von Freiesleben
- Novozymes A/S, Krogshøjvej 36, 2880, Bagsværd, Denmark.,DTU Bioengineering, Department of Biotechnology and Biomedicine, Building 221, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Olga V Moroz
- York Structural Biology Laboratory, Department of Chemistry, University of York, York, YO10 5DD, UK
| | - Elena Blagova
- York Structural Biology Laboratory, Department of Chemistry, University of York, York, YO10 5DD, UK
| | - Mathias Wiemann
- Department of Biochemistry and Structural Biology, Center for Molecular Protein Science, Lund University, PO Box 124, SE-221 00, Lund, Sweden
| | | | - Jane W Agger
- DTU Bioengineering, Department of Biotechnology and Biomedicine, Building 221, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Gideon J Davies
- York Structural Biology Laboratory, Department of Chemistry, University of York, York, YO10 5DD, UK
| | - Keith S Wilson
- York Structural Biology Laboratory, Department of Chemistry, University of York, York, YO10 5DD, UK.
| | - Henrik Stålbrand
- Department of Biochemistry and Structural Biology, Center for Molecular Protein Science, Lund University, PO Box 124, SE-221 00, Lund, Sweden
| | - Anne S Meyer
- DTU Bioengineering, Department of Biotechnology and Biomedicine, Building 221, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark.
| | | |
Collapse
|
11
|
von Freiesleben P, Spodsberg N, Stenbæk A, Stålbrand H, Krogh KBRM, Meyer AS. Boosting of enzymatic softwood saccharification by fungal GH5 and GH26 endomannanases. BIOTECHNOLOGY FOR BIOFUELS 2018; 11:194. [PMID: 30026809 PMCID: PMC6048861 DOI: 10.1186/s13068-018-1184-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Accepted: 06/21/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Softwood is a promising feedstock for lignocellulosic biorefineries, but as it contains galactoglucomannan efficient mannan-degrading enzymes are required to unlock its full potential. RESULTS Boosting of the saccharification of pretreated softwood (Canadian lodgepole pine) was investigated for 10 fungal endo-β(1→4)-mannanases (endomannanases) from GH5 and GH26, including 6 novel GH26 enzymes. The endomannanases from Trichoderma reesei (TresMan5A) and Podospora anserina (PansMan26) were investigated with and without their carbohydrate-binding module (CBM). The pH optimum and initial rates of enzyme catalysed hydrolysis were determined on pure β-mannans, including acetylated and deacetylated spruce galactoglucomannan. Melting temperature (Tm) and stability of the endomannanases during prolonged incubations were also assessed. The highest initial rates on the pure mannans were attained by GH26 endomannanases. Acetylation tended to decrease the enzymatic rates to different extents depending on the enzyme. Despite exhibiting low rates on the pure mannan substrates, TresMan5A with CBM1 catalysed highest release among the endomannanases of both mannose and glucose during softwood saccharification. The presence of the CBM1 as well as the catalytic capability of the TresMan5A core module itself seemed to allow fast and more profound degradation of portions of the mannan that led to better cellulose degradation. In contrast, the presence of the CBM35 did not change the performance of PansMan26 in softwood saccharification. CONCLUSIONS This study identified TresMan5A as the best endomannanase for increasing cellulase catalysed glucose release from softwood. Except for the superior performance of TresMan5A, the fungal GH5 and GH26 endomannanases generally performed on par on the lignocellulosic matrix. The work also illustrated the importance of using genuine lignocellulosic substrates rather than simple model substrates when selecting enzymes for industrial biomass applications.
Collapse
Affiliation(s)
- Pernille von Freiesleben
- Novozymes A/S, Krogshøjvej 36, 2880 Bagsværd, Denmark
- Protein Chemistry & Enzyme Technology, DTU Bioengineering, Technical University of Denmark, Building 221, 2800 Kgs. Lyngby, Denmark
| | | | - Anne Stenbæk
- Novozymes A/S, Krogshøjvej 36, 2880 Bagsværd, Denmark
| | - Henrik Stålbrand
- Department of Biochemistry and Structural Biology, Center for Molecular Protein Science, Lund University, PO Box 124, 221 00 Lund, Sweden
| | | | - Anne S. Meyer
- Protein Chemistry & Enzyme Technology, DTU Bioengineering, Technical University of Denmark, Building 221, 2800 Kgs. Lyngby, Denmark
| |
Collapse
|
12
|
Solid-State Fermentation as a Novel Paradigm for Organic Waste Valorization: A Review. SUSTAINABILITY 2017. [DOI: 10.3390/su9020224] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
13
|
Production, properties, and applications of endo-β-mannanases. Biotechnol Adv 2017; 35:1-19. [DOI: 10.1016/j.biotechadv.2016.11.001] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 10/12/2016] [Accepted: 11/07/2016] [Indexed: 12/27/2022]
|
14
|
Tsouko E, Kachrimanidou V, dos Santos AF, do Nascimento Vitorino Lima ME, Papanikolaou S, de Castro AM, Freire DMG, Koutinas AA. Valorization of By-Products from Palm Oil Mills for the Production of Generic Fermentation Media for Microbial Oil Synthesis. Appl Biochem Biotechnol 2016; 181:1241-1256. [DOI: 10.1007/s12010-016-2281-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Accepted: 10/04/2016] [Indexed: 10/20/2022]
|
15
|
Affiliation(s)
- Prakram Singh Chauhan
- Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, SAS Nagar, Mohali, India and
| | - Naveen Gupta
- Department of Microbiology, Panjab University, Chandigarh, India
| |
Collapse
|
16
|
Yamabhai M, Sak-Ubol S, Srila W, Haltrich D. Mannan biotechnology: from biofuels to health. Crit Rev Biotechnol 2015; 36:32-42. [DOI: 10.3109/07388551.2014.923372] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
17
|
Soni H, Ganaie MA, Pranaw K, Kango N. Design-of-experiment strategy for the production of mannanase biocatalysts using plam karnel cake and its application to degrade locust bean and guar gum. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2015. [DOI: 10.1016/j.bcab.2015.01.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
18
|
Li RK, Chen P, Ng TB, Yang J, Lin J, Yan F, Ye XY. Highly efficient expression and characterization of a β-mannanase fromBacillus subtilisinPichia pastoris. Biotechnol Appl Biochem 2014; 62:64-70. [DOI: 10.1002/bab.1250] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Accepted: 05/21/2014] [Indexed: 11/11/2022]
Affiliation(s)
- Ren-Kuan Li
- College of Biological Science and Technology; Fuzhou University; Fujian People's Republic of China
- National Engineering Laboratory for High-Efficient Enzyme Expression; Fuzhou People's Republic of China
| | - Ping Chen
- National Engineering Laboratory for High-Efficient Enzyme Expression; Fuzhou People's Republic of China
| | - Tzi Bun Ng
- School of Biomedical Sciences; Faculty of Medicine; The Chinese University of Hong Kong; Shatin, New Territories; Hong Kong People's Republic of China
| | - Jie Yang
- College of Biological Science and Technology; Fuzhou University; Fujian People's Republic of China
- National Engineering Laboratory for High-Efficient Enzyme Expression; Fuzhou People's Republic of China
| | - Juan Lin
- College of Biological Science and Technology; Fuzhou University; Fujian People's Republic of China
- National Engineering Laboratory for High-Efficient Enzyme Expression; Fuzhou People's Republic of China
| | - Fen Yan
- College of Biological Science and Technology; Fuzhou University; Fujian People's Republic of China
- National Engineering Laboratory for High-Efficient Enzyme Expression; Fuzhou People's Republic of China
| | - Xiu-Yun Ye
- College of Biological Science and Technology; Fuzhou University; Fujian People's Republic of China
- National Engineering Laboratory for High-Efficient Enzyme Expression; Fuzhou People's Republic of China
| |
Collapse
|
19
|
Kumar R, Wyman CE. Strong cellulase inhibition by Mannan polysaccharides in cellulose conversion to sugars. Biotechnol Bioeng 2014; 111:1341-53. [PMID: 24522973 DOI: 10.1002/bit.25218] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2013] [Revised: 01/24/2014] [Accepted: 02/06/2014] [Indexed: 11/08/2022]
Abstract
Cellulase enzymes contribute a major fraction of the total cost for biological conversion of lignocellulosic biomass to fuels and chemicals. Although a several fold reduction in cellulase production costs and enhancement of cellulase activity and stability have been reported in recent years, sugar yields are still lower at low enzyme doses than desired commercially. We recently reported that hemicellulose xylan and its oligomers strongly inhibit cellulase and that supplementation of cellulase with xylanase and β-xylosidase would significantly reduce such inhibition. In this study, mannan polysaccharides and their enzymatically prepared hydrolyzates were discovered to be strongly inhibitory to fungal cellulase in cellulose conversion (>50% drop in % relative conversion), even at a small concentration of 0.1 g/L, and inhibition was much greater than experienced by other known inhibitors such as cellobiose, xylooligomers, and furfural. Furthermore, cellulase inhibition dramatically increased with heteromannan loading and mannan substitution with galactose side units. In general, enzymatically prepared hydrolyzates were less inhibitory than their respective mannan polysaccharides except highly substituted ones. Supplementation of cellulase with commercial accessory enzymes such as xylanase, pectinase, and β-glucosidase was effective in greatly relieving inhibition but only for less substituted heteromannans. However, cellulase supplementation with purified heteromannan specific enzymes relieved inhibition by these more substituted heteromannans as well, suggesting that commercial preparations need to have higher amounts of such activities to realize high sugar yields at the low enzyme protein loadings needed for low cost fuels production.
Collapse
Affiliation(s)
- Rajeev Kumar
- Center for Environmental Research and Technology (CE-CERT), Bourns College of Engineering, University of California, Riverside, 1084 Columbia Avenue, Riverside, California, 92507; BioEnergy Science Center (BESC), Oak Ridge National Laboratory, Oak Ridge, Tennessee, 37831-6422.
| | | |
Collapse
|
20
|
Koppram R, Tomás-Pejó E, Xiros C, Olsson L. Lignocellulosic ethanol production at high-gravity: challenges and perspectives. Trends Biotechnol 2014; 32:46-53. [DOI: 10.1016/j.tibtech.2013.10.003] [Citation(s) in RCA: 253] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Revised: 10/07/2013] [Accepted: 10/10/2013] [Indexed: 11/30/2022]
|
21
|
Ghosh A, Luís AS, Brás JLA, Pathaw N, Chrungoo NK, Fontes CMGA, Goyal A. Deciphering ligand specificity of a Clostridium thermocellum family 35 carbohydrate binding module (CtCBM35) for gluco- and galacto- substituted mannans and its calcium induced stability. PLoS One 2013; 8:e80415. [PMID: 24324599 PMCID: PMC3855759 DOI: 10.1371/journal.pone.0080415] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Accepted: 10/02/2013] [Indexed: 11/25/2022] Open
Abstract
This study investigated the role of CBM35 from Clostridium thermocellum (CtCBM35) in polysaccharide recognition. CtCBM35 was cloned into pET28a (+) vector with an engineered His6 tag and expressed in Escherichia coli BL21 (DE3) cells. A homogenous 15 kDa protein was purified by immobilized metal ion chromatography (IMAC). Ligand binding analysis of CtCBM35 was carried out by affinity electrophoresis using various soluble ligands. CtCBM35 showed a manno-configured ligand specific binding displaying significant association with konjac glucomannan (Ka = 14.3×10(4) M(-1)), carob galactomannan (Ka = 12.4×10(4) M(-1)) and negligible association (Ka = 12 µM(-1)) with insoluble mannan. Binding of CtCBM35 with polysaccharides which was calcium dependent exhibited two fold higher association in presence of 10 mM Ca(2+) ion with konjac glucomannan (Ka = 41×10(4) M(-1)) and carob galactomannan (Ka = 30×10(4) M(-1)). The polysaccharide binding was further investigated by fluorescence spectrophotometric studies. On binding with carob galactomannan and konjac glucomannan the conformation of CtCBM35 changed significantly with regular 21 nm peak shifts towards lower quantum yield. The degree of association (K a) with konjac glucomannan and carob galactomannan, 14.3×10(4) M(-1) and 11.4×10(4) M(-1), respectively, corroborated the findings from affinity electrophoresis. The association of CtCBM35with konjac glucomannan led to higher free energy of binding (ΔG) -25 kJ mole(-1) as compared to carob galactomannan (ΔG) -22 kJ mole(-1). On binding CtCBM35 with konjac glucomannan and carob galactomannan the hydrodynamic radius (RH) as analysed by dynamic light scattering (DLS) study, increased to 8 nm and 6 nm, respectively, from 4.25 nm in absence of ligand. The presence of 10 mM Ca(2+) ions imparted stiffer orientation of CtCBM35 particles with increased RH of 4.52 nm. Due to such stiffer orientation CtCBM35 became more thermostable and its melting temperature was shifted to 70°C from initial 50°C.
Collapse
Affiliation(s)
- Arabinda Ghosh
- Department of Biotechnology, Indian Institute of Technology Guwahati, Guwahati, Assam, India
| | - Ana Sofia Luís
- CIISA-Faculdade de Medicina Veterinaria, Avenida da Universidade Técnica, Lisbon, Portugal
| | - Joana L. A. Brás
- CIISA-Faculdade de Medicina Veterinaria, Avenida da Universidade Técnica, Lisbon, Portugal
| | - Neeta Pathaw
- North Eastern Hill University, Shillong, Meghalaya, India
| | | | - Carlos M. G. A. Fontes
- CIISA-Faculdade de Medicina Veterinaria, Avenida da Universidade Técnica, Lisbon, Portugal
| | - Arun Goyal
- Department of Biotechnology, Indian Institute of Technology Guwahati, Guwahati, Assam, India
| |
Collapse
|
22
|
Maeda RN, Barcelos CA, Santa Anna LMM, Pereira N. Cellulase production by Penicillium funiculosum and its application in the hydrolysis of sugar cane bagasse for second generation ethanol production by fed batch operation. J Biotechnol 2012; 163:38-44. [PMID: 23123260 DOI: 10.1016/j.jbiotec.2012.10.014] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2012] [Revised: 10/22/2012] [Accepted: 10/24/2012] [Indexed: 10/27/2022]
Abstract
This study aimed to produce a cellulase blend and to evaluate its application in a simultaneous saccharification and fermentation (SSF) process for second generation ethanol production from sugar cane bagasse. The sugar cane bagasse was subjected to pretreatments (diluted acid and alkaline), as for disorganizing the ligocellulosic complex, and making the cellulose component more amenable to enzymatic hydrolysis. The residual solid fraction was named sugar cane bagasse partially delignified cellulignin (PDC), and was used for enzyme production and ethanol fermentation. The enzyme production was performed in a bioreactor with two inoculum concentrations (5 and 10% v/v). The fermentation inoculated with higher inoculum size reduced the time for maximum enzyme production (from 72 to 48). The enzyme extract was concentrated using tangential ultrafiltration in hollow fiber membranes, and the produced cellulase blend was evaluated for its stability at 37 °C, operation temperature of the simultaneous SSF process, and at 50 °C, optimum temperature of cellulase blend activity. The cellulolytic preparation was stable for at least 300 h at both 37 °C and 50 °C. The ethanol production was carried out by PDC fed-batch SSF process, using the onsite cellulase blend. The feeding strategy circumvented the classic problems of diffusion limitations by diminishing the presence of a high solid:liquid ratio at any time, resulting in high ethanol concentration at the end of the process (100 g/L), which corresponded to a fermentation efficiency of 78% of the maximum obtainable theoretically. The experimental results led to the ratio of 380 L of ethanol per ton of sugar cane bagasse PDC.
Collapse
Affiliation(s)
- Roberto Nobuyuki Maeda
- Federal University of Rio de Janeiro, Center of Technology, School of Chemistry, Laboratories of Bioprocess Development, ZIP Code: 21949-900, Rio de Janeiro, Brazil
| | | | | | | |
Collapse
|
23
|
Chauhan PS, Puri N, Sharma P, Gupta N. Mannanases: microbial sources, production, properties and potential biotechnological applications. Appl Microbiol Biotechnol 2012; 93:1817-30. [DOI: 10.1007/s00253-012-3887-5] [Citation(s) in RCA: 210] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2011] [Revised: 01/03/2012] [Accepted: 01/04/2012] [Indexed: 11/28/2022]
|
24
|
Agrawal P, Verma D, Daniell H. Expression of Trichoderma reesei β-mannanase in tobacco chloroplasts and its utilization in lignocellulosic woody biomass hydrolysis. PLoS One 2011; 6:e29302. [PMID: 22216240 PMCID: PMC3247253 DOI: 10.1371/journal.pone.0029302] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2011] [Accepted: 11/23/2011] [Indexed: 11/26/2022] Open
Abstract
Lignocellulosic ethanol offers a promising alternative to conventional fossil fuels. One among the major limitations in the lignocellulosic biomass hydrolysis is unavailability of efficient and environmentally biomass degrading technologies. Plant-based production of these enzymes on large scale offers a cost-effective solution. Cellulases, hemicellulases including mannanases and other accessory enzymes are required for conversion of lignocellulosic biomass into fermentable sugars. β-mannanase catalyzes endo-hydrolysis of the mannan backbone, a major constituent of woody biomass. In this study, the man1 gene encoding β-mannanase was isolated from Trichoderma reesei and expressed via the chloroplast genome. PCR and Southern hybridization analysis confirmed site-specific transgene integration into the tobacco chloroplast genomes and homoplasmy. Transplastomic plants were fertile and set viable seeds. Germination of seeds in the selection medium showed inheritance of transgenes into the progeny without any Mendelian segregation. Expression of endo-β-mannanase for the first time in plants facilitated its characterization for use in enhanced lignocellulosic biomass hydrolysis. Gel diffusion assay for endo-β-mannanase showed the zone of clearance confirming functionality of chloroplast-derived mannanase. Endo-β-mannanase expression levels reached up to 25 units per gram of leaf (fresh weight). Chloroplast-derived mannanase had higher temperature stability (40 °C to 70 °C) and wider pH optima (pH 3.0 to 7.0) than E.coli enzyme extracts. Plant crude extracts showed 6-7 fold higher enzyme activity than E.coli extracts due to the formation of disulfide bonds in chloroplasts, thereby facilitating their direct utilization in enzyme cocktails without any purification. Chloroplast-derived mannanase when added to the enzyme cocktail containing a combination of different plant-derived enzymes yielded 20% more glucose equivalents from pinewood than the cocktail without mannanase. Our results demonstrate that chloroplast-derived mannanase is an important component of enzymatic cocktail for woody biomass hydrolysis and should provide a cost-effective solution for its diverse applications in the biofuel, paper, oil, pharmaceutical, coffee and detergent industries.
Collapse
Affiliation(s)
- Pankaj Agrawal
- Department of Molecular Biology and Microbiology, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, United States of America
| | - Dheeraj Verma
- Department of Molecular Biology and Microbiology, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, United States of America
| | - Henry Daniell
- Department of Molecular Biology and Microbiology, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, United States of America
| |
Collapse
|
25
|
Zambare VP, Bhalla A, Muthukumarappan K, Sani RK, Christopher LP. Bioprocessing of agricultural residues to ethanol utilizing a cellulolytic extremophile. Extremophiles 2011; 15:611-8. [PMID: 21837419 DOI: 10.1007/s00792-011-0391-2] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2010] [Accepted: 07/19/2011] [Indexed: 11/27/2022]
Abstract
A recently discovered thermophilic isolate, Geobacillus sp. R7, was shown to produce a thermostable cellulase with a high hydrolytic potential when grown on extrusion-pretreated agricultural residues such corn stover and prairie cord grass. At 70°C and 15-20% solids, the thermostable cellulase was able to partially liquefy solid biomass only after 36 h of hydrolysis time. The hydrolytic capabilities of Geobacillus sp. R7 cellulase were comparable to those of a commercial cellulase. Fermentation of the enzymatic hydrolyzates with Saccharomyces cerevisiae ATCC 24860 produced ethanol yields of 0.45-0.50 g ethanol/g glucose with more than 99% glucose utilization. It was further demonstrated that Geobacillus sp. R7 can ferment the lignocellulosic substrates to ethanol in a single step that could facilitate the development of a consolidated bioprocessing as an alternative approach for bioethanol production with outstanding potential for cost reductions.
Collapse
Affiliation(s)
- Vasudeo P Zambare
- Center for Bioprocessing Research and Development, South Dakota School of Mines and Technology, Rapid City, 57701, USA
| | | | | | | | | |
Collapse
|
26
|
Blibech M, Chaari F, Bhiri F, Dammak I, Ghorbel RE, Chaabouni SE. Production of manno-oligosaccharides from locust bean gum using immobilized Penicillium occitanis mannanase. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.molcatb.2011.08.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
27
|
Mussatto SI, Machado EMS, Martins S, Teixeira JA. Production, Composition, and Application of Coffee and Its Industrial Residues. FOOD BIOPROCESS TECH 2011. [DOI: 10.1007/s11947-011-0565-z] [Citation(s) in RCA: 395] [Impact Index Per Article: 30.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
28
|
Lee SE, Park BS, Yoon JJ. Proteomic Evaluation of Cellular Responses of Saccharomyces cerevisiae to Formic Acid Stress. MYCOBIOLOGY 2010; 38:302-9. [PMID: 23956670 PMCID: PMC3741523 DOI: 10.4489/myco.2010.38.4.302] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2010] [Accepted: 11/25/2010] [Indexed: 05/07/2023]
Abstract
Formic acid is a representative carboxylic acid that inhibits bacterial cell growth, and thus it is generally considered to constitute an obstacle to the reuse of renewable biomass. In this study, Saccharomyces cerevisiae was used to elucidate changes in protein levels in response to formic acid. Fifty-seven differentially expressed proteins in response to formic acid toxicity in S. cerevisiae were identified by 1D-PAGE and nano-liquid chromatography-tandem mass spectrometry (nano-LC-MS/MS) analyses. Among the 28 proteins increased in expression, four were involved in the MAP kinase signal transduction pathway and one in the oxidative stress-induced pathway. A dramatic increase was observed in the number of ion transporters related to maintenance of acid-base balance. Regarding the 29 proteins decreased in expression, they were found to participate in transcription during cell division. Heat shock protein 70, glutathione reductase, and cytochrome c oxidase were measured by LC-MS/MS analysis. Taken together, the inhibitory action of formic acid on S. cerevisiae cells might disrupt the acid-base balance across the cell membrane and generate oxidative stress, leading to repressed cell division and death. S. cerevisiae also induced expression of ion transporters, which may be required to maintain the acid-base balance when yeast cells are exposed to high concentrations of formic acid in growth medium.
Collapse
Affiliation(s)
- Sung-Eun Lee
- Research Station, Nanotoxtech Inc., Ansan 426-901, Korea
| | | | | |
Collapse
|
29
|
|