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Gaizauskaite Z, Zvirdauskiene R, Svazas M, Basinskiene L, Zadeike D. Optimised Degradation of Lignocelluloses by Edible Filamentous Fungi for the Efficient Biorefinery of Sugar Beet Pulp. Polymers (Basel) 2024; 16:1178. [PMID: 38732647 PMCID: PMC11085495 DOI: 10.3390/polym16091178] [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: 01/10/2024] [Revised: 04/17/2024] [Accepted: 04/18/2024] [Indexed: 05/13/2024] Open
Abstract
The degradation of the complex structure of lignocellulosic biomass is important for its further biorefinery to value-added bioproducts. The use of effective fungal species for the optimised degradation of biomass can promote the effectiveness of the biorefinery of such raw material. In this study, the optimisation of processing parameters (temperature, time, and s/w ratio) for cellulase activity and reducing sugar (RS) production through the hydrolysis of sugar beet pulp (SBP) by edible filamentous fungi of Aspergillus, Fusarium, Botrytis, Penicillium, Rhizopus, and Verticillium spp. was performed. The production of RS was analysed at various solid/water (s/w) ratios (1:10-1:20), different incubation temperatures (20-35 °C), and processing times (60-168 h). The Aspergillus niger CCF 3264 and Penicillium oxalicum CCF 3438 strains showed the most effective carboxymethyl cellulose (CMC) degrading activity and also sugar recovery (15.9-44.8%) from SBP biomass in the one-factor experiments. Mathematical data evaluation indicated that the highest RS concentration (39.15 g/100 g d.w.) and cellulolytic activity (6.67 U/g d.w.) could be achieved using A. niger CCF 3264 for the degradation of SBP at 26 °C temperature with 136 h of processing time and a 1:15 solid/water ratio. This study demonstrates the potential of fungal degradation to be used for SBP biorefining.
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Affiliation(s)
- Zydrune Gaizauskaite
- Department of Food Science and Technology, Faculty of Chemical Technology, Kaunas University of Technology, 50254 Kaunas, Lithuania; (R.Z.); (L.B.)
- Food Institute, Kaunas University of Technology, 50254 Kaunas, Lithuania
| | - Renata Zvirdauskiene
- Department of Food Science and Technology, Faculty of Chemical Technology, Kaunas University of Technology, 50254 Kaunas, Lithuania; (R.Z.); (L.B.)
| | - Mantas Svazas
- Department of Applied Economics, Finance and Accounting, Agriculture Academy of Vytautas Magnus University, 53361 Kaunas, Lithuania;
| | - Loreta Basinskiene
- Department of Food Science and Technology, Faculty of Chemical Technology, Kaunas University of Technology, 50254 Kaunas, Lithuania; (R.Z.); (L.B.)
| | - Daiva Zadeike
- Department of Food Science and Technology, Faculty of Chemical Technology, Kaunas University of Technology, 50254 Kaunas, Lithuania; (R.Z.); (L.B.)
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Dygas D, Kręgiel D, Berłowska J. Sugar Beet Pulp as a Biorefinery Substrate for Designing Feed. Molecules 2023; 28:2064. [PMID: 36903310 PMCID: PMC10004680 DOI: 10.3390/molecules28052064] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 02/20/2023] [Accepted: 02/20/2023] [Indexed: 02/25/2023] Open
Abstract
An example of the implementation of the principles of the circular economy is the use of sugar beet pulp as animal feed. Here, we investigate the possible use of yeast strains to enrich waste biomass in single-cell protein (SCP). The strains were evaluated for yeast growth (pour plate method), protein increment (Kjeldahl method), assimilation of free amino nitrogen (FAN), and reduction of crude fiber content. All the tested strains were able to grow on hydrolyzed sugar beet pulp-based medium. The greatest increases in protein content were observed for Candida utilis LOCK0021 and Saccharomyces cerevisiae Ethanol Red (ΔN = 2.33%) on fresh sugar beet pulp, and for Scheffersomyces stipitis NCYC1541 (ΔN = 3.04%) on dried sugar beet pulp. All the strains assimilated FAN from the culture medium. The largest reductions in the crude fiber content of the biomass were recorded for Saccharomyces cerevisiae Ethanol Red (Δ = 10.89%) on fresh sugar beet pulp and Candida utilis LOCK0021 (Δ = 15.05%) on dried sugar beet pulp. The results show that sugar beet pulp provides an excellent matrix for SCP and feed production.
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Affiliation(s)
- Dawid Dygas
- Department of Environmental Biotechnology, Lodz University of Technology, 171/173 Wólczańska Street, 90-530 Łódź, Poland
| | - Dorota Kręgiel
- Department of Environmental Biotechnology, Lodz University of Technology, 171/173 Wólczańska Street, 90-530 Łódź, Poland
| | - Joanna Berłowska
- Department of Environmental Biotechnology, Lodz University of Technology, 171/173 Wólczańska Street, 90-530 Łódź, Poland
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3
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García-Velásquez C, van der Meer Y. Mind the Pulp: Environmental and economic assessment of a sugar beet pulp biorefinery for biobased chemical production. WASTE MANAGEMENT (NEW YORK, N.Y.) 2023; 155:199-210. [PMID: 36395636 DOI: 10.1016/j.wasman.2022.10.038] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 10/07/2022] [Accepted: 10/30/2022] [Indexed: 06/16/2023]
Abstract
Sugar beet pulp, a byproduct from sugar beet refining, is used by farmers as fertilizer or sold as animal feed. Both options underestimate the potential of sugar beet pulp as a platform to produce specialty and bulky chemicals as a promising pathway for sustainable biochemicals - mind the pulp. This study proposes a biorefinery concept to produce food additives (pectin-derived oligosaccharides) and bulky chemicals (terephthalic acid). Since the biorefinery has a low technology readiness level (TRL = 1), it is relevant to evaluate the feasibility of this biorefinery concept to provide guidance (at an early stage) on the environmental and economic advantages and limitations. For this purpose, the life cycle assessment and techno-economic assessment frameworks are used to assess the environmental impact and economic performance of the biobased terephthalic acid, respectively. Moreover, environmental impacts are accounted for in economic terms using different monetary valuation methods (environmental prices, Ecovalue12, and Ecotax). The environmental impact of biobased terephthalic acid was higher in most impact categories than the fossil counterpart, depending on the selected allocation approach (mass vs economic). The economic feasibility of the proposed biorefinery is highly dependent on the pectin-derived oligosaccharides market price and the valorization of byproducts (humins and levulinic acid). The selection of the monetary valuation method is critical for monetizing environmental impacts when comparing biobased against fossil-based alternatives.
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Affiliation(s)
- Carlos García-Velásquez
- Aachen-Maastricht Institute for Biobased Materials (AMIBM), Maastricht University, Brightlands Chemelot Campus, Urmonderbaan 22, 6167 RD Geleen, the Netherlands
| | - Yvonne van der Meer
- Aachen-Maastricht Institute for Biobased Materials (AMIBM), Maastricht University, Brightlands Chemelot Campus, Urmonderbaan 22, 6167 RD Geleen, the Netherlands.
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Fresh and Stored Sugar Beet Roots as a Source of Various Types of Mono- and Oligosaccharides. Molecules 2022; 27:molecules27165125. [PMID: 36014358 PMCID: PMC9415824 DOI: 10.3390/molecules27165125] [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: 07/15/2022] [Revised: 08/05/2022] [Accepted: 08/10/2022] [Indexed: 11/17/2022] Open
Abstract
Although sugar beets are primarily treated as a source of sucrose, due to their rich chemical composition, they can also be a source of other carbohydrates, e.g., mono- and oligosaccharides. The study focused on both fresh beet roots and those stored in mounds. Our studies have shown that, in addition to sucrose, sugar beet tissue also comprises other carbohydrates: kestose (3.39%) and galactose (0.65%) and, in smaller amounts, glucose, trehalose and raffinose. The acidic hydrolysis of the watery carbohydrates extracts resulted in obtaining significant amounts of glucose (8.37%) and arabinose (3.11%) as well as xylose and galactose and, in smaller amounts, mannose. An HPSEC liquid chromatography study of the molecular mass profile of the carbohydrate compounds present in the beet roots showed alongside the highest percentage (96.53–97.43%) of sucrose (0.34 kDa) the presence of pectin compounds from the araban group and arabinoxylooligosaccharides (5–9 kDa) with a percentage share of 0.61 to 1.87%. On the basis of our research, beet roots can be considered a potential source of carbohydrates, such as kestose, which is classified as fructooligosaccharide (FOS). The results of this study may be helpful in evaluating sugar beets as a direct source of various carbohydrates, or as a raw material for the biosynthesis of fructooligosaccharides (FOS) or galactooligosaccharides (GOS).
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6
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Synergistic action of thermophilic pectinases for pectin bioconversion into D-galacturonic acid. Enzyme Microb Technol 2022; 160:110071. [DOI: 10.1016/j.enzmictec.2022.110071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 05/25/2022] [Accepted: 05/28/2022] [Indexed: 11/19/2022]
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Basu B. The radiophiles of Deinococcaceae family: Resourceful microbes for innovative biotechnological applications. CURRENT RESEARCH IN MICROBIAL SCIENCES 2022; 3:100153. [PMID: 35909625 PMCID: PMC9325910 DOI: 10.1016/j.crmicr.2022.100153] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 04/24/2022] [Accepted: 06/29/2022] [Indexed: 11/18/2022] Open
Affiliation(s)
- Bhakti Basu
- Molecular Biology Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, 400094, India
- Corresponding author.
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Cárdenas-Fernández M, Subrizi F, Dobrijevic D, Hailes HC, Ward JM. Characterisation of a hyperthermophilic transketolase from Thermotoga maritima DSM3109 as a biocatalyst for 7-keto-octuronic acid synthesis. Org Biomol Chem 2021; 19:6493-6500. [PMID: 34250527 PMCID: PMC8317047 DOI: 10.1039/d1ob01237a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 07/05/2021] [Indexed: 11/21/2022]
Abstract
Transketolase (TK) is a fundamentally important enzyme in industrial biocatalysis which carries out a stereospecific carbon-carbon bond formation, and is widely used in the synthesis of prochiral ketones. This study describes the biochemical and molecular characterisation of a novel and unusual hyperthermophilic TK from Thermotoga maritima DSM3109 (TKtmar). TKtmar has a low protein sequence homology compared to the already described TKs, with key amino acid residues in the active site highly conserved. TKtmar has a very high optimum temperature (>90 °C) and shows pronounced stability at high temperature (e.g. t1/2 99 and 9.3 h at 50 and 80 °C, respectively) and in presence of organic solvents commonly used in industry (DMSO, acetonitrile and methanol). Substrate screening showed activity towards several monosaccharides and aliphatic aldehydes. In addition, for the first time, TK specificity towards uronic acids was achieved with TKtmar catalysing the efficient conversion of d-galacturonic acid and lithium hydroxypyruvate into 7-keto-octuronic acid, a very rare C8 uronic acid, in high yields (98%, 49 mM).
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Affiliation(s)
- Max Cárdenas-Fernández
- Department of Biochemical Engineering, University College London, Gower Street, London WC1E 6BT, UK. and School of Biosciences, University of Kent, Canterbury, Kent CT2 7NJ, UK
| | - Fabiana Subrizi
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK
| | - Dragana Dobrijevic
- Department of Biochemical Engineering, University College London, Gower Street, London WC1E 6BT, UK.
| | - Helen C Hailes
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK
| | - John M Ward
- Department of Biochemical Engineering, University College London, Gower Street, London WC1E 6BT, UK.
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Martins LC, Palma M, Angelov A, Nevoigt E, Liebl W, Sá-Correia I. Complete Utilization of the Major Carbon Sources Present in Sugar Beet Pulp Hydrolysates by the Oleaginous Red Yeasts Rhodotorula toruloides and R. mucilaginosa. J Fungi (Basel) 2021; 7:jof7030215. [PMID: 33802726 PMCID: PMC8002571 DOI: 10.3390/jof7030215] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 03/13/2021] [Accepted: 03/15/2021] [Indexed: 12/12/2022] Open
Abstract
Agro-industrial residues are low-cost carbon sources (C-sources) for microbial growth and production of value-added bioproducts. Among the agro-industrial residues available, those rich in pectin are generated in high amounts worldwide from the sugar industry or the industrial processing of fruits and vegetables. Sugar beet pulp (SBP) hydrolysates contain predominantly the neutral sugars d-glucose, l-arabinose and d-galactose, and the acidic sugar d-galacturonic acid. Acetic acid is also present at significant concentrations since the d-galacturonic acid residues are acetylated. In this study, we have examined and optimized the performance of a Rhodotorula mucilaginosa strain, isolated from SBP and identified at the molecular level during this work. This study was extended to another oleaginous red yeast species, R. toruloides, envisaging the full utilization of the C-sources from SBP hydrolysate (at pH 5.0). The dual role of acetic acid as a carbon and energy source and as a growth and metabolism inhibitor was examined. Acetic acid prevented the catabolism of d-galacturonic acid and l-arabinose after the complete use of the other C-sources. However, d-glucose and acetic acid were simultaneously and efficiently metabolized, followed by d-galactose. SBP hydrolysate supplementation with amino acids was crucial to allow d-galacturonic acid and l-arabinose catabolism. SBP valorization through the production of lipids and carotenoids by Rhodotorula strains, supported by complete catabolism of the major C-sources present, looks promising for industrial implementation.
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Affiliation(s)
- Luís C. Martins
- iBB—Institute for Bioengineering and Biosciences/i4HB—Associate Laboratory Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal; (L.C.M.); (M.P.)
- Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal
| | - Margarida Palma
- iBB—Institute for Bioengineering and Biosciences/i4HB—Associate Laboratory Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal; (L.C.M.); (M.P.)
- Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal
| | - Angel Angelov
- TUM School of Life Sciences, Technical University of Munich, 85354 Freising, Germany; (A.A.); (W.L.)
| | - Elke Nevoigt
- Department of Life Sciences and Chemistry, Jacobs University Bremen GmbH, Campus Ring 1, 28759 Bremen, Germany;
| | - Wolfgang Liebl
- TUM School of Life Sciences, Technical University of Munich, 85354 Freising, Germany; (A.A.); (W.L.)
| | - Isabel Sá-Correia
- iBB—Institute for Bioengineering and Biosciences/i4HB—Associate Laboratory Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal; (L.C.M.); (M.P.)
- Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal
- Correspondence:
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Mitchell DA, Moreira I, Krieger N. Potential of time-stepping stochastic models as tools for guiding the design and operation of processes for the enzymatic hydrolysis of polysaccharides - A review. BIORESOURCE TECHNOLOGY 2021; 323:124559. [PMID: 33388211 DOI: 10.1016/j.biortech.2020.124559] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/11/2020] [Accepted: 12/12/2020] [Indexed: 06/12/2023]
Abstract
Processes for the enzymatic hydrolysis of polysaccharides in biorefineries are becoming increasingly important. The complex network of reactions involved in polysaccharide hydrolysis can be described by stochastic models that advance in steps of time. Such models have the potential to be important tools for guiding process design and operation, and several have been developed over the last two decades. We evaluate these models. Many of the current stochastic models for the hydrolysis of colloidal polysaccharides use empirical parameters that have no recognized biological meaning. Only one model uses classical parameters of enzyme kinetics, namely specificity constants and saturation constants. Recent stochastic models for the hydrolysis of insoluble cellulose give valuable insights into the molecular-level phenomenon that limit hydrolysis rates. We conclude that, if stochastic models of enzymatic polysaccharide hydrolysis are to become widely used tools for guiding process development, then further improvements are required.
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Affiliation(s)
- David Alexander Mitchell
- Postgraduate Program in Chemical Engineering, Federal University of Paraná, P.O. Box 19011, Central Polytechnic, Curitiba 81531-980, Paraná, Brazil; Department of Biochemistry and Molecular Biology, Federal University of Paraná, P.O. Box 19046, Central Polytechnic, Curitiba 81531-980, Paraná, Brazil
| | - Isabelle Moreira
- Postgraduate Program in Chemical Engineering, Federal University of Paraná, P.O. Box 19011, Central Polytechnic, Curitiba 81531-980, Paraná, Brazil
| | - Nadia Krieger
- Postgraduate Program in Chemical Engineering, Federal University of Paraná, P.O. Box 19011, Central Polytechnic, Curitiba 81531-980, Paraná, Brazil; Department of Chemistry, Federal University of Paraná, P.O. Box 19061, Central Polytechnic, Curitiba 81531-980, Paraná, Brazil.
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11
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Kammoun M, Ayeb H, Bettaieb T, Richel A. Chemical characterisation and technical assessment of agri-food residues, marine matrices, and wild grasses in the South Mediterranean area: A considerable inflow for biorefineries. WASTE MANAGEMENT (NEW YORK, N.Y.) 2020; 118:247-257. [PMID: 32916421 DOI: 10.1016/j.wasman.2020.08.032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 08/17/2020] [Accepted: 08/20/2020] [Indexed: 06/11/2023]
Abstract
The integration of easily available and under-exploited biomasses is considered a sustainable strategy in biorefining approaches. Mediterranean countries, especially Algeria, Morocco, and Tunisia, offer such under-exploited waste of different origins. This study revealed the chemical composition and phytochemical characteristics of various agri-food side-products, marine residues, and wild grasses collected in the Maghreb region. Results showed that these wastes contained variable proportions of polysaccharides, lignin, constitute molecules (proteins, lipids, and inorganic molecules) and, various secondary metabolites, mainly flavonoids and condensed tannins. Based on this, the Mediterranean waste was divided into three categories. The first category included waste with high lignin content (40 wt%). The second category contained waste with lignin content below 10 wt% and structural carbohydrate content below 50 wt%. Additionally, the waste in this category comprised noticeable amounts of flavonoids and condensed tannins, particularly from thistle, speedwell, and spurge. Finally, the third category included waste with lignin content above 15 wt% and carbohydrate content in the range of 45-55 wt%. The results also showed that the waste in the third category has a chemical composition similar to that of raw materials envisioned for use in European or North American commercial biorefineries. The findings of this study indicate that the biomass waste employed in this study can be used to develop marketable bioproducts and may be a potential raw material for a biorefinery facility.
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Affiliation(s)
- Maroua Kammoun
- Laboratory of Biomass and Green Technologies - University of Liege (Gembloux Agro-Bio Tech Campus), Passage des Déportés, 2, 5030 Gembloux, Belgium; Laboratory of Horticultural Sciences - University of Carthage (National Agronomic Institute of Tunisia), 43 Av. Charles Nicolle, 1082 Tunis, Tunisia.
| | - Haitham Ayeb
- Louvain Institute of Biomolecular Science and Technology, University of Louvain (UCLouvain), Croix du Sud 4-5, L7.07.14, 1348 Louvain-la-Neuve, Belgium
| | - Taoufik Bettaieb
- Laboratory of Horticultural Sciences - University of Carthage (National Agronomic Institute of Tunisia), 43 Av. Charles Nicolle, 1082 Tunis, Tunisia
| | - Aurore Richel
- Laboratory of Biomass and Green Technologies - University of Liege (Gembloux Agro-Bio Tech Campus), Passage des Déportés, 2, 5030 Gembloux, Belgium
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12
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Martins LC, Monteiro CC, Semedo PM, Sá-Correia I. Valorisation of pectin-rich agro-industrial residues by yeasts: potential and challenges. Appl Microbiol Biotechnol 2020; 104:6527-6547. [PMID: 32474799 PMCID: PMC7347521 DOI: 10.1007/s00253-020-10697-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 05/08/2020] [Accepted: 05/19/2020] [Indexed: 01/29/2023]
Abstract
Pectin-rich agro-industrial residues are feedstocks with potential for sustainable biorefineries. They are generated in high amounts worldwide from the industrial processing of fruits and vegetables. The challenges posed to the industrial implementation of efficient bioprocesses are however manyfold and thoroughly discussed in this review paper, mainly at the biological level. The most important yeast cell factory platform for advanced biorefineries is currently Saccharomyces cerevisiae, but this yeast species cannot naturally catabolise the main sugars present in pectin-rich agro-industrial residues hydrolysates, in particular D-galacturonic acid and L-arabinose. However, there are non-Saccharomyces species (non-conventional yeasts) considered advantageous alternatives whenever they can express highly interesting metabolic pathways, natively assimilate a wider range of carbon sources or exhibit higher tolerance to relevant bioprocess-related stresses. For this reason, the interest in non-conventional yeasts for biomass-based biorefineries is gaining momentum. This review paper focuses on the valorisation of pectin-rich residues by exploring the potential of yeasts that exhibit vast metabolic versatility for the efficient use of the carbon substrates present in their hydrolysates and high robustness to cope with the multiple stresses encountered. The major challenges and the progresses made related with the isolation, selection, sugar catabolism, metabolic engineering and use of non-conventional yeasts and S. cerevisiae-derived strains for the bioconversion of pectin-rich residue hydrolysates are discussed. The reported examples of value-added products synthesised by different yeasts using pectin-rich residues are reviewed. Key Points • Review of the challenges and progresses made on the bioconversion of pectin-rich residues by yeasts. • Catabolic pathways for the main carbon sources present in pectin-rich residues hydrolysates. • Multiple stresses with potential to affect bioconversion productivity. • Yeast metabolic engineering to improve pectin-rich residues bioconversion. Graphical abstract.
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Affiliation(s)
- Luís C Martins
- iBB - Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
- Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | - Catarina C Monteiro
- iBB - Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | - Paula M Semedo
- iBB - Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | - Isabel Sá-Correia
- iBB - Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal.
- Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal.
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Vastano M, Pellis A, Botelho Machado C, Simister R, McQueen‐Mason SJ, Farmer TJ, Gomez LD. Sustainable Galactarate‐Based Polymers: Multi‐Enzymatic Production of Pectin‐Derived Polyesters. Macromol Rapid Commun 2019; 40:e1900361. [DOI: 10.1002/marc.201900361] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 08/30/2019] [Indexed: 11/05/2022]
Affiliation(s)
- Marco Vastano
- Green Chemistry Centre of ExcellenceDepartment of ChemistryUniversity of York Heslington York YO10 5DD UK
| | - Alessandro Pellis
- Green Chemistry Centre of ExcellenceDepartment of ChemistryUniversity of York Heslington York YO10 5DD UK
| | - Carla Botelho Machado
- Centre for Novel Agricultural ProductsDepartment of BiologyUniversity of York Heslington York YO10 5DD UK
| | - Rachael Simister
- Centre for Novel Agricultural ProductsDepartment of BiologyUniversity of York Heslington York YO10 5DD UK
| | - Simon J. McQueen‐Mason
- Centre for Novel Agricultural ProductsDepartment of BiologyUniversity of York Heslington York YO10 5DD UK
| | - Thomas J. Farmer
- Green Chemistry Centre of ExcellenceDepartment of ChemistryUniversity of York Heslington York YO10 5DD UK
| | - Leonardo D. Gomez
- Centre for Novel Agricultural ProductsDepartment of BiologyUniversity of York Heslington York YO10 5DD UK
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14
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The Use of Acidic Hydrolysates after Furfural Production from Sugar Waste Biomass as a Fermentation Medium in the Biotechnological Production of Hydrogen. ENERGIES 2019. [DOI: 10.3390/en12173222] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
This study investigates a simultaneous processing of sugar beet pulp (SBP) for furfural, hydrogen and methane production using various pretreatment methods. In the experiments, sugar beet pulp was first subjected to thermal and thermochemical pretreatment at 140 °C. Then hydrolysates from these operations were investigated for their potential for methane and hydrogen production in batch tests. The experiments showed that thermal pretreatment of SBP resulted in the highest biogas and methane yields of 945 dm3/kg volatile solids (VS) and 374 dm3 CH4/kg VS, respectively, and a moderate hydrogen production of 113 dm3 H2/kg VS, which corresponded to a calculated energy production of 142 kWh/t; however, only low amount of furfural was obtained (1.63 g/L). Conversely, the highest furfural yield of 12 g/L was achieved via thermochemical pretreatment of SBP; however, biogas production from hydrolysate was much lower (215 dm3/kg VS) and contained only 67 dm3/kg VS of hydrogen. Meanwhile, in the experiment with lower amounts of sulfuric acid (2%) used for pretreatment, a moderate furfural production of 4 g/L was achieved with as high as 220 dm3/kg VS of hydrogen and the corresponding energy yield of 75 kWh/t.
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15
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Subrizi F, Benhamou L, Ward JM, Sheppard TD, Hailes HC. Aminopolyols from Carbohydrates: Amination of Sugars and Sugar‐Derived Tetrahydrofurans with Transaminases. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201813712] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Fabiana Subrizi
- Department of ChemistryUniversity College London 20 Gordon Street London WC1H 0AJ UK
| | - Laure Benhamou
- Department of ChemistryUniversity College London 20 Gordon Street London WC1H 0AJ UK
| | - John M. Ward
- Department of Biochemical EngineeringUniversity College London Bernard Katz Building London WC1E 6BT UK
| | - Tom D. Sheppard
- Department of ChemistryUniversity College London 20 Gordon Street London WC1H 0AJ UK
| | - Helen C. Hailes
- Department of ChemistryUniversity College London 20 Gordon Street London WC1H 0AJ UK
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16
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Subrizi F, Benhamou L, Ward JM, Sheppard TD, Hailes HC. Aminopolyols from Carbohydrates: Amination of Sugars and Sugar-Derived Tetrahydrofurans with Transaminases. Angew Chem Int Ed Engl 2019; 58:3854-3858. [PMID: 30690839 PMCID: PMC6492202 DOI: 10.1002/anie.201813712] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Indexed: 01/09/2023]
Abstract
Carbohydrates are the major component of biomass and have unique potential as a sustainable source of building blocks for chemicals, materials, and biofuels because of their low cost, ready availability, and stereochemical diversity. With a view to upgrading carbohydrates to access valuable nitrogen-containing sugar-like compounds such as aminopolyols, biocatalytic aminations using transaminase enzymes (TAms) have been investigated as a sustainable alternative to traditional synthetic strategies. Demonstrated here is the reaction of TAms with sugar-derived tetrahydrofuran (THF) aldehydes, obtained from the regioselective dehydration of biomass-derived sugars, to provide access to cyclic aminodiols in high yields. In a preliminary study we have also established the direct transamination of sugars to give acyclic aminopolyols. Notably, the reaction of the ketose d-fructose proceeds with complete stereoselectivity to yield valuable aminosugars in high purity.
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Affiliation(s)
- Fabiana Subrizi
- Department of ChemistryUniversity College London20 Gordon StreetLondonWC1H 0AJUK
| | - Laure Benhamou
- Department of ChemistryUniversity College London20 Gordon StreetLondonWC1H 0AJUK
| | - John M. Ward
- Department of Biochemical EngineeringUniversity College LondonBernard Katz BuildingLondonWC1E 6BTUK
| | - Tom D. Sheppard
- Department of ChemistryUniversity College London20 Gordon StreetLondonWC1H 0AJUK
| | - Helen C. Hailes
- Department of ChemistryUniversity College London20 Gordon StreetLondonWC1H 0AJUK
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17
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Cárdenas-Fernández M, Hamley-Bennett C, Leak DJ, Lye GJ. Continuous enzymatic hydrolysis of sugar beet pectin and l-arabinose recovery within an integrated biorefinery. BIORESOURCE TECHNOLOGY 2018; 269:195-202. [PMID: 30172183 DOI: 10.1016/j.biortech.2018.08.069] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 08/16/2018] [Accepted: 08/17/2018] [Indexed: 06/08/2023]
Abstract
Sugar beet pulp (SBP) fractionated by steam explosion, released sugar beet pectin (SB-pectin) which was selectively hydrolysed using a novel α-l-arabinofuranosidase (AF), yielding monomeric l-arabinose (Ara) and a galacturonic acid rich backbone (GABB). AF was immobilised on an epoxy-functionalised resin with 70% overall immobilisation yield. Pretreatment of SB-pectin, to remove coloured compounds, improved the stability of the immobilised AF, allowing its reutilisation for up to 10 reaction cycles in a stirred tank reactor. Continuous hydrolysis of SB-pectin was subsequently performed using a packed bed reactor (PBR) with immobilised AF. Reactor performance was evaluated using a Design of Experiment approach. Pretreated SB-pectin hydrolysis was run for 7 consecutive days maintaining 73% of PBR performance. Continuous separation of Ara from GABB was achieved by tangential flow ultrafiltration with 92% Ara recovery. These results demonstrate the feasibility of establishing a continuous bioprocess to obtain Ara from the inexpensive SBP biomass.
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Affiliation(s)
- Max Cárdenas-Fernández
- The Advanced Centre for Biochemical Engineering, Department of Biochemical Engineering, Bernard Katz Building, University College London, Gower Street, London WC1E 6BT, UK
| | | | - David J Leak
- Department of Biology and Biochemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK
| | - Gary J Lye
- The Advanced Centre for Biochemical Engineering, Department of Biochemical Engineering, Bernard Katz Building, University College London, Gower Street, London WC1E 6BT, UK.
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18
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Romo JE, Bollar NV, Zimmermann CJ, Wettstein SG. Conversion of Sugars and Biomass to Furans Using Heterogeneous Catalysts in Biphasic Solvent Systems. ChemCatChem 2018; 10:4805-4816. [PMID: 30555599 PMCID: PMC6283062 DOI: 10.1002/cctc.201800926] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Indexed: 11/21/2022]
Abstract
Within the last decade, interest in using biphasic systems for producing furans from biomass has grown significantly. Biphasic systems continuously extract furans into the organic phase, which prevents degradation reactions and potentially allows for easier separations of the products. Several heterogeneous catalyst types, including zeolites, ion exchange resins, niobium-based, and others, have been used with various organic solvents to increase furan yields from sugar dehydration reactions. In this minireview, we summarized the use of heterogeneous catalysts in biphasic systems for furfural and 5-hydroxymethylfurfural production from the past five years, highlighting trends in chemical and physical properties that effect catalytic activity. Additionally, the selection of an organic solvent for a biphasic system is extremely important and we review and discuss properties of the most commonly used organic solvents.
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Affiliation(s)
- Joelle E. Romo
- Department of Chemical and Biological EngineeringMontana State UniversityBozeman59717-2220 MTUSA
| | - Nathan V. Bollar
- Department of Chemical and Biological EngineeringMontana State UniversityBozeman59717-2220 MTUSA
| | - Coy J. Zimmermann
- Department of Chemical and Biological EngineeringMontana State UniversityBozeman59717-2220 MTUSA
| | - Stephanie G. Wettstein
- Department of Chemical and Biological EngineeringMontana State UniversityBozeman59717-2220 MTUSA
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19
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Bawn M, Subrizi F, Lye GJ, Sheppard TD, Hailes HC, Ward JM. Data on a thermostable enzymatic one-pot reaction for the production of a high-value compound from l-arabinose. Data Brief 2018; 19:1341-1354. [PMID: 30229010 PMCID: PMC6140825 DOI: 10.1016/j.dib.2018.05.140] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 05/28/2018] [Indexed: 11/28/2022] Open
Abstract
The dataset presented in this article is related to the research article entitled "One-pot, two-step transaminase and transketolase synthesis of l-gluco-heptulose from l-arabinose" (Bawn et al., 2018 in press) [1]. This article presents data on initial experiments that were carried out to investigate new thermostable transketolase (TK) activities with l-arabinose. Transaminase (TAm) sequences from an in-house library of thermophilic strains were analyzed to compare homologies to characterized TAms with desired activity. DNA and amino acid sequences are presented for all the enzymes investigated. Calibration curves for products of the TK and TAm reactions are also presented along with chromatographic analysis of the various one-pot reactions.
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Affiliation(s)
- Maria Bawn
- The Advanced Centre for Biochemical Engineering, Department of Biochemical Engineering, University College London, Bernard Katz Building, London WC1E 6BT, UK
| | - Fabiana Subrizi
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK
| | - Gary J. Lye
- The Advanced Centre for Biochemical Engineering, Department of Biochemical Engineering, University College London, Bernard Katz Building, London WC1E 6BT, UK
| | - Tom D. Sheppard
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK
| | - Helen C. Hailes
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK
| | - John M. Ward
- The Advanced Centre for Biochemical Engineering, Department of Biochemical Engineering, University College London, Bernard Katz Building, London WC1E 6BT, UK
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