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Lazaro-Romero A, Contreras-Ramos S, Dehonor-Gómez M, Rojas-García J, Amaya-Delgado L. Optimizing cellulose fraction for enhanced utility: Comparative pre-treatment of Agave tequilana Weber var. blue bagasse fiber for sustainable applications. Heliyon 2024; 10:e29149. [PMID: 38638968 PMCID: PMC11024549 DOI: 10.1016/j.heliyon.2024.e29149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 02/23/2024] [Accepted: 04/02/2024] [Indexed: 04/20/2024] Open
Abstract
In recent decades, natural fibers have emerged as an alternative to synthetic fibers due to their renewable nature, lower environmental impact, and comparable strength properties. Agave bagasse, a byproduct of agave juice extraction in Mexico, stands out for its potential in various industrial applications, notably biocomposite production. Bagasse is rich in cellulose, along with hemicellulose and lignin. Cellulose is the most suitable to be converted into valuable products, and it is versatile, renewable, and biodegradable. An effective pre-treatment is crucial to enrich its fraction. This study aims to determine the optimal pre-treatment conditions for the agave bagasse. Three different pre-treatments were tested, acid (H2SO4), enzymatic (Cellic® HTec2 enzymatic preparation), and sequence of acid-enzymatic (sulfuric acid and Cellic® HTec2), to determine which pre-treatment got the optimal cellulose fraction increase. The acid pre-treatment was conducted over three time ranges (5, 10, and 15 min) at different acid concentrations (1%, 1.5%, and 2%). Enzymatic reactions were conducted over 24 h, testing three different enzyme concentrations (1.5%, 3%, 4.5%). The sequential pre-treatment utilized the optimal conditions derived from the acid experiments (1.5% H2SO4 for 10 min), followed by enzymatic reactions carried out over three different durations (6, 12, and 24 h). The findings revealed that a 1.5% acid concentration applied for 10 min was the most efficient pre-treatment method. This pre-treatment resulted in a 1.9-fold increase in the cellulose fraction while reducing hemicellulose content by 30%. The hemicellulose reduction was confirmed through Fourier Transform IR spectroscopy (FTIR) analysis, complemented by scanning electron microscopy (SEM) observations highlighting physical alterations in the fiber structure. Furthermore, thermogravimetric analysis (TGA) demonstrated improved thermal stability, suggesting potential use in biocomposites. Future research should evaluate the environmental impact of optimized pre-treatment methods for agave bagasse.
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Affiliation(s)
- A. Lazaro-Romero
- Unidad de Tecnología Ambiental, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco A.C. (CIATEJ), Av. Normalistas #800, Col. Colinas de la Normal, Guadalajara, Jalisco, Mexico
| | - S.M. Contreras-Ramos
- Unidad de Tecnología Ambiental, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco A.C. (CIATEJ), Av. Normalistas #800, Col. Colinas de la Normal, Guadalajara, Jalisco, Mexico
| | - M. Dehonor-Gómez
- Centro de Tecnología Avanzada A.C. (CIATEQ), Circuito de la Industria Poniente Lote 11, Manzana 3, No. 11, Col. Parque Industrial Exhacienda Doña Rosa, Lerma, Estado de México, Mexico
| | - J.M. Rojas-García
- Centro de Tecnología Avanzada A.C. (CIATEQ), Circuito de la Industria Poniente Lote 11, Manzana 3, No. 11, Col. Parque Industrial Exhacienda Doña Rosa, Lerma, Estado de México, Mexico
| | - L. Amaya-Delgado
- Unidad de Biotecnología Industrial, CIATEJ, Camino Arenero 1227, Col. El Bajío, Zapopan, Jalisco, México
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Wali K, Khan HA, Sica P, Van Henten EJ, Meers E, Brunn S. Application of fourier transform infrared photoacoustic spectroscopy for quantification of nutrient contents and their plant availability in manure and digestate. Heliyon 2024; 10:e28487. [PMID: 38596044 PMCID: PMC11002050 DOI: 10.1016/j.heliyon.2024.e28487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 03/12/2024] [Accepted: 03/20/2024] [Indexed: 04/11/2024] Open
Abstract
In this study, we assess the feasibility of using Fourier Transform Infrared Photoacoustic Spectroscopy (FTIR-PAS) to predict macro- and micro-nutrients in a diverse set of manures and digestates. Furthermore, the prediction capabilities of FTIR-PAS were assessed using a novel error tolerance-based interval method in view of the accuracy required for application in agricultural practices. Partial Least-Squares Regression (PLSR) was used to correlate the FTIR-PAS spectra with nutrient contents. The prediction results were then assessed with conventional assessment methods (root mean square error (RMSE), coefficient of determination R2, and the ratio of prediction to deviation (RPD)). The results show the potential of FTIR-PAS to be used as a rapid analysis technique, with promising prediction results (R2 > 0.91 and RPD >2.5) for all elements except for bicarbonate-extractable P, K, and NH4+-N (0.8 < R2 < 0.9 and 2 < RPD <2.5). The results for nitrogen and phosphorus were further evaluated using the proposed error tolerance-based interval method. The probability of prediction for nitrogen within the allowed limit is calculated to be 94.6 % and for phosphorus 83.8 %. The proposed error tolerance-based interval method provides a better measure to decide if the FTIR-PAS in its current state could be used to meet the required accuracy in agriculture for the quantification of nutrient content in manure and digestate.
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Affiliation(s)
- Khan Wali
- Agricultural Biosystems Engineering Group, Wageningen University & Research, Wageningen, 6708 PB, Netherlands
| | - Haris Ahmad Khan
- Data Science, Crop Protection Development, Syngenta, Basel, Switzerland
| | - Pietro Sica
- Department of Plant and Environmental Sciences, Plant and Soil Science Section, University of Copenhagen, Copenhagen, Frederiksberg C 1871, Denmark
| | - Eldert J. Van Henten
- Agricultural Biosystems Engineering Group, Wageningen University & Research, Wageningen, 6708 PB, Netherlands
| | - Erik Meers
- Department of Green Chemistry and Technology, University of Gent, Gent, 9820, belgium
| | - Sander Brunn
- Department of Plant and Environmental Sciences, Plant and Soil Science Section, University of Copenhagen, Copenhagen, Frederiksberg C 1871, Denmark
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Silva DJS, Santos JAV, Pinto JCN, Llorent-Martínez EJ, Castilho PC, Batista de Carvalho LAE, Marques MPM, Barroca MJ, Moreira da Silva A, da Costa RMF. Spectrochemical analysis of seasonal and sexual variation of antioxidants in Corema album (L.) D. Don leaf extracts. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 299:122816. [PMID: 37192576 DOI: 10.1016/j.saa.2023.122816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 04/21/2023] [Accepted: 05/01/2023] [Indexed: 05/18/2023]
Abstract
Bioactive phytoconstituents have been increasingly investigated for their potential human health benefits. Corema album (L.) D. Don, an Ericaceae, reportedly has antioxidant, antimicrobial and anticancer properties. Aiming at enhancing its nutraceutical potential, we performed a spectrochemical analysis of hydroethanolic extracts from C. album leaves. We report on changes in the antioxidant activity of the extracts, as well as in the accumulation of key phytoconstituents (namely phenolic compounds), in female and male samples, throughout three harvesting seasons (February, July, and October). For each extract, the antioxidant activity was assessed by different spectrophotometric methods. Simultaneously, attenuated total reflectance Fourier transform mid-infrared spectroscopy (FTIR-ATR), and high-performance liquid chromatography - electrospray ionisation - quadrupole time-of-flight mass spectrometry (HPLC-ESI-Q-TOF-MS), were used to identify and monitor variations in the composition of phenolic compounds in the extracts. The main compounds identified were epicatechin, laricitrin-O-hexoside isomers, and myricetin-O-hexoside isomers. Significant differences were found in the composition and relative abundance of the compounds of interest, according to sex and season. Overall, a trend was observed whereby phenolic content and antioxidant activities were higher in males and increased between the earlier and the latest harvests. Based on these results, we may conclude that late summer or early autumn harvests are preferable when aiming at the highest yearly content of bioactive compounds. Additionally, it should be considered that extracts from male individuals typically display higher antioxidant activities. Ultimately, our understanding of C. album in the context of nutraceutical applications is benefited from the quantitative and qualitative portrait provided here, thus promoting its relevance as a source of bioactive compounds.
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Affiliation(s)
- Daniela J S Silva
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
| | - João A V Santos
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
| | - Joana C N Pinto
- CQM - Centro de Química da Madeira, Universidade da Madeira, Campus da Penteada, 9020-105 Funchal, Portugal
| | - Eulogio J Llorent-Martínez
- Department of Physical and Analytical Chemistry, Faculty of Experimental Sciences, University of Jaén, Campus Las Lagunillas, E-23071 Jaén, Spain
| | - Paula C Castilho
- CQM - Centro de Química da Madeira, Universidade da Madeira, Campus da Penteada, 9020-105 Funchal, Portugal
| | - Luís A E Batista de Carvalho
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
| | - Maria Paula M Marques
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal; Department of Life Sciences, University of Coimbra, 3000-456 Coimbra, Portugal
| | - Maria João Barroca
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal; Polytechnic Institute of Coimbra, Coimbra Agriculture School, 3045-601 Coimbra, Portugal
| | - Aida Moreira da Silva
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal; Polytechnic Institute of Coimbra, Coimbra Agriculture School, 3045-601 Coimbra, Portugal
| | - Ricardo M F da Costa
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal.
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Rito M, Marques J, da Costa RMF, Correia S, Lopes T, Martin D, Canhoto JMPL, Batista de Carvalho LAE, Marques MPM. Antioxidant Potential of Tamarillo Fruits-Chemical and Infrared Spectroscopy Analysis. Antioxidants (Basel) 2023; 12:antiox12020536. [PMID: 36830094 PMCID: PMC9952541 DOI: 10.3390/antiox12020536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 02/09/2023] [Accepted: 02/16/2023] [Indexed: 02/23/2023] Open
Abstract
Native to South America, tamarillo (Solanum betaceum Cav.) is a small tree cultivated as a fruit crop in several regions of the world. Known for its sweet and sour taste, tamarillo fruits are very nutritious due to the presence of health-beneficial components such as fiber, vitamins, and antioxidants. Despite its nutritional value, tamarillo remains poorly known in global markets. The present work aims to study the antioxidant activity of four genotypes of tamarillo. Several chemical assays were performed to assess the antioxidant components and antioxidant activity of aqueous ethanolic extracts from each genotype. Overall, the Mealhada genotype (a red cultivar) showed the most interesting results, displaying the highest amount of total phenolic, flavonoids, and anthocyanin contents, as well as higher antioxidant activity. To evaluate the composition of the extract, Fourier-transform infrared spectroscopy (FTIR) was used to characterize important components in aqueous ethanolic extracts of the fruits, having revealed the presence of high amounts of phenols (the main compounds responsible for antioxidant activity), as well as triterpenoids and polysaccharides. The present results highlight the potential nutraceutical importance of tamarillo fruits.
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Affiliation(s)
- Miguel Rito
- Centre for Functional Ecology, Associate Laboratory Terra, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
| | - Joana Marques
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
| | - Ricardo M. F. da Costa
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
- Correspondence:
| | - Sandra Correia
- Centre for Functional Ecology, Associate Laboratory Terra, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
- InnovPlantProtect CoLab, Estrada de Gil Vaz, 7351-901 Elvas, Portugal
| | - Tércia Lopes
- Centre for Functional Ecology, Associate Laboratory Terra, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
| | - Daniel Martin
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
| | - Jorge M. P. L. Canhoto
- Centre for Functional Ecology, Associate Laboratory Terra, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
| | | | - Maria Paula M. Marques
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
- Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
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da Costa RMF, Bosch M, Simister R, Gomez LD, Canhoto JM, Batista de Carvalho LAE. Valorisation Potential of Invasive Acacia dealbata, A. longifolia and A. melanoxylon from Land Clearings. Molecules 2022; 27:7006. [PMID: 36296599 PMCID: PMC9610895 DOI: 10.3390/molecules27207006] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 10/04/2022] [Accepted: 10/14/2022] [Indexed: 08/02/2023] Open
Abstract
Acacia spp. are invasive in Southern Europe, and their high propagation rates produce excessive biomass, exacerbating wildfire risk. However, lignocellulosic biomass from Acacia spp. may be utilised for diverse biorefinery applications. In this study, attenuated total reflectance Fourier transform infrared spectroscopy (FTIR-ATR), high-performance anion-exchange chromatography pulsed amperometric detection (HPAEC-PAD) and lignin content determinations were used for a comparative compositional characterisation of A. dealbata, A. longifolia and A. melanoxylon. Additionally, biomass was treated with three white-rot fungi species (Ganoderma lucidum, Pleurotus ostreatus and Trametes versicolor), which preferentially degrade lignin. Our results showed that the pre-treatments do not significantly alter neutral sugar composition while reducing lignin content. Sugar release from enzymatic saccharification was enhanced, in some cases possibly due to a synergy between white-rot fungi and mild alkali pretreatments. For example, in A. dealbata stems treated with alkali and P. ostreatus, saccharification yield was 702.3 nmol mg-1, which is higher than the samples treated only with alkali (608.1 nmol mg-1), and 2.9-fold higher than the non-pretreated controls (243.9 nmol mg-1). By characterising biomass and pretreatments, generated data creates value for unused biomass resources, contributing to the implementation of sustainable biorefining systems. In due course, the generated value will lead to economic incentives for landowners to cut back invasive Acacia spp. more frequently, thus reducing excess biomass, which exacerbates wildfire risk.
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Affiliation(s)
- Ricardo M. F. da Costa
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, Rua Larga, 3004-535 Coimbra, Portugal
- Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
| | - Maurice Bosch
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Plas Gogerddan, Aberystwyth, Ceredigion SY23 3EE, UK
| | - Rachael Simister
- Centre for Novel Agricultural Products, Department of Biology, University of York, Heslington, York YO10 5DD, UK
| | - Leonardo D. Gomez
- Centre for Novel Agricultural Products, Department of Biology, University of York, Heslington, York YO10 5DD, UK
| | - Jorge M. Canhoto
- Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
| | - Luís A. E. Batista de Carvalho
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, Rua Larga, 3004-535 Coimbra, Portugal
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Wang L, Guan H, Hu J, Feng Y, Li X, Yusef KK, Gao H, Tian D. Aspergillus niger Enhances Organic and Inorganic Phosphorus Release from Wheat Straw by Secretion of Degrading Enzymes and Oxalic Acid. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:10738-10746. [PMID: 36027054 DOI: 10.1021/acs.jafc.2c03063] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
To explore the mechanisms of crop straw degradation and phosphorus (P) release by phosphate-solubilizing fungi (PSF), a typical PSF Aspergillus niger (A. niger, ANG) was investigated for the degradation of wheat straw (WST) in this work. The results revealed that A. niger significantly increased wheat straw degradation (30%) compared with no A. niger treatment (7.7%). Meanwhile, more than 92% of total P was released from WST by A. niger, much higher than from WST treatment (69.5%). Although the ratios of inorganic P release between WST and WST + ANG treatments were similar (17.6 vs 19.7%), a significant difference occurred between their release of organic P, i.e., WST (51.9%) vs WST + ANG (72.5%). The high enzyme activity of β-1,4-glucanase and β-glucosidase produced by A. niger contributed to the wheat straw degradation and organic P release compared with no A. niger treatment. Oxalic acid secreted by A. niger dominated the release of inorganic P from WST. Our findings suggested that A. niger is an efficient microbial agent for crop straw degradation and P release, which could be a candidate in the pathway of straw return.
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Affiliation(s)
- Liyan Wang
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
- Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-restoration, Ministry of Natural Resources, Ministry of Natural Resources, Hefei 230036, China
- Anhui Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green phosphorus Fertilizer, Anhui Agricultural University, Hefei 230036, China
| | - Hao Guan
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
- Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-restoration, Ministry of Natural Resources, Ministry of Natural Resources, Hefei 230036, China
- Anhui Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green phosphorus Fertilizer, Anhui Agricultural University, Hefei 230036, China
| | - Jun Hu
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
- Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-restoration, Ministry of Natural Resources, Ministry of Natural Resources, Hefei 230036, China
- Anhui Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green phosphorus Fertilizer, Anhui Agricultural University, Hefei 230036, China
| | - Yi Feng
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
- Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-restoration, Ministry of Natural Resources, Ministry of Natural Resources, Hefei 230036, China
- Anhui Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green phosphorus Fertilizer, Anhui Agricultural University, Hefei 230036, China
| | - Xiang Li
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
- Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-restoration, Ministry of Natural Resources, Ministry of Natural Resources, Hefei 230036, China
- Anhui Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green phosphorus Fertilizer, Anhui Agricultural University, Hefei 230036, China
| | - Kianpoor Kalkhajeh Yusef
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
- Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-restoration, Ministry of Natural Resources, Ministry of Natural Resources, Hefei 230036, China
- Anhui Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green phosphorus Fertilizer, Anhui Agricultural University, Hefei 230036, China
| | - Hongjian Gao
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
- Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-restoration, Ministry of Natural Resources, Ministry of Natural Resources, Hefei 230036, China
- Anhui Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green phosphorus Fertilizer, Anhui Agricultural University, Hefei 230036, China
| | - Da Tian
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
- Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-restoration, Ministry of Natural Resources, Ministry of Natural Resources, Hefei 230036, China
- Anhui Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green phosphorus Fertilizer, Anhui Agricultural University, Hefei 230036, China
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Meng F, Yang H, Shi Z, Zhao P, Yang J. Alkaline deacetylation-aided hydrogen peroxide-acetic acid pretreatment of bamboo residue to improve enzymatic saccharification and bioethanol production. BIORESOURCE TECHNOLOGY 2022; 358:127321. [PMID: 35609748 DOI: 10.1016/j.biortech.2022.127321] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 05/09/2022] [Accepted: 05/13/2022] [Indexed: 06/15/2023]
Abstract
Bamboo pretreatment with alkaline deacetylation-aided hydrogen peroxide-acetic acid (HPAC-NaOH) was investigated for producing high-value-added products. Comparing with HPAC pretreated D. sinicus, the post-treatment of alkaline deacetylation resulted in higher glucose yield of 91.3% and ethanol concentrations of 17.20 g/L, increased by about 20-27%. A strong negative correlation between the content of acetyl with cellulose accessibility and enzymatic hydrolysis yield was showed. The deacetylation of HPAC-DS contributed to the increase of cellulase adsorption capacities in substrates and the variations of hydrophilicity, cellulose crystallinity, and degree of polymerization, which can generate highly reactive cellulosic materials for enzymatic saccharification to produce bioethanol. The HPAC-NaOH pretreatment can provide a promising approach to improve the bioconversion of bamboo to biofuels, and has broad space for the biorefinery of bamboo in the south of China.
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Affiliation(s)
- Fanyang Meng
- School of Chemical Engineering, Southwest Forestry University, Kunming 650224, China
| | - Haiyan Yang
- Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Kunming 650224, China; School of Chemical Engineering, Southwest Forestry University, Kunming 650224, China
| | - Zhengjun Shi
- Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Kunming 650224, China; School of Chemical Engineering, Southwest Forestry University, Kunming 650224, China
| | - Ping Zhao
- School of Chemical Engineering, Southwest Forestry University, Kunming 650224, China
| | - Jing Yang
- Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Kunming 650224, China; School of Chemical Engineering, Southwest Forestry University, Kunming 650224, China.
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MARASCA N, BRITO MR, RAMBO MCD, PEDRAZZI C, SCAPIN E, RAMBO MKD. Analysis of the potential of cupuaçu husks (Theobroma grandiflorum) as raw material for the synthesis of bioproducts and energy generation. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.48421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
| | | | | | | | - Elisandra SCAPIN
- Universidade Federal do Tocantins, Brasil; Universidade Federal do Tocantins, Brasil
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Meng F, Li N, Yang H, Shi Z, Zhao P, Yang J. Investigation of hydrogen peroxide-acetic acid pretreatment to enhance the enzymatic digestibility of bamboo residues. BIORESOURCE TECHNOLOGY 2022; 344:126162. [PMID: 34678451 DOI: 10.1016/j.biortech.2021.126162] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 10/13/2021] [Accepted: 10/16/2021] [Indexed: 06/13/2023]
Abstract
Bamboo biomass was widely considered as a promising substitute for lignocellulose to produce fermentable sugars and biofuels in the south of China. When P. amarus were treated using hydrogen peroxide and acetic Acid pretreatment in the presence of sulphuric acid at 60 ℃ for 2 h, 82.63% lignin was removed from the bamboo residue, and enzymatic saccharification yield of 79.3% and ethanol content of 13.31 g/L were obtained. Analysis indicated that HPAC pretreatment increased the hydrophilic and porous nature of substrate, which can improve the enzyme accessibility to cellulose. When HPAC-pretreated D. sinicus, B. lapidea, N. affinis, andD. giganteus were used as the substrates of enzymatic saccharification, glucose yields of 71-84% at 72 h were achieved. HPAC pretreatment was a highly efficient and environmentally friendly method for bamboo biorefinery in the south of China.
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Affiliation(s)
- Fanyang Meng
- School of Chemical Engineering, Southwest Forestry University, Kunming 650224, PR China
| | - Ning Li
- School of Chemical Engineering, Southwest Forestry University, Kunming 650224, PR China
| | - Haiyan Yang
- Key Laboratory for Chemical Utilization of Forest Biomass Resources in Colleges and Universities of Yunnan Province, Southwest Forestry University, Kunming 650224, PR China; School of Chemical Engineering, Southwest Forestry University, Kunming 650224, PR China
| | - Zhengjun Shi
- Key Laboratory for Chemical Utilization of Forest Biomass Resources in Colleges and Universities of Yunnan Province, Southwest Forestry University, Kunming 650224, PR China; School of Chemical Engineering, Southwest Forestry University, Kunming 650224, PR China
| | - Ping Zhao
- Key Laboratory for Chemical Utilization of Forest Biomass Resources in Colleges and Universities of Yunnan Province, Southwest Forestry University, Kunming 650224, PR China; School of Chemical Engineering, Southwest Forestry University, Kunming 650224, PR China
| | - Jing Yang
- Key Laboratory for Chemical Utilization of Forest Biomass Resources in Colleges and Universities of Yunnan Province, Southwest Forestry University, Kunming 650224, PR China; School of Chemical Engineering, Southwest Forestry University, Kunming 650224, PR China.
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Bhaturiwala R, Bagban M, Singh TA, Modi H. Partial purification and application of β-mannanase for the preparation of low molecular weight galacto and glucomannan. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2021. [DOI: 10.1016/j.bcab.2021.102155] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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da Costa RMF, Winters A, Hauck B, Martín D, Bosch M, Simister R, Gomez LD, Batista de Carvalho LAE, Canhoto JM. Biorefining Potential of Wild-Grown Arundo donax, Cortaderia selloana and Phragmites australis and the Feasibility of White-Rot Fungi-Mediated Pretreatments. FRONTIERS IN PLANT SCIENCE 2021; 12:679966. [PMID: 34276732 PMCID: PMC8283202 DOI: 10.3389/fpls.2021.679966] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 06/10/2021] [Indexed: 05/29/2023]
Abstract
Arundo donax, Cortaderia selloana and Phragmites australis are high-biomass-producing perennial Poalean species that grow abundantly and spontaneously in warm temperate regions, such as in Mediterranean-type climates, like those of Southern Europe, Western United States coastal areas, or in regions of South America, South Africa and Australia. Given their vigorous and spontaneous growth, biomass from the studied grasses often accumulates excessively in unmanaged agro-forestry areas. Nonetheless, this also creates the demand and opportunity for the valorisation of these biomass sources, particularly their cell wall polymers, for biorefining applications. By contrast, a related crop, Miscanthus × giganteus, is a perennial grass that has been extensively studied for lignocellulosic biomass production, as it can grow on low-input agricultural systems in colder climates. In this study Fourier transform mid-infrared spectroscopy (FTIR), high-performance anion-exchange chromatography (HPAEC) and lignin content determinations were used for a comparative compositional characterisation of A. donax, C. selloana and P. australis harvested from the wild, in relation to a trial field-grown M. × giganteus high-yielding genotype. A high-throughput saccharification assay showed relatively high sugar release values from the wild-grown grasses, even with a 0.1M NaOH mild alkali pretreatment. In addition to this alkaline pretreatment, biomass was treated with white-rot fungi (WRF), which preferentially degrade lignin more readily than holocellulose. Three fungal species were used: Ganoderma lucidum, Pleurotus ostreatus and Trametes versicolor. Our results showed that neutral sugar contents are not significantly altered, while some lignin is lost during the pretreatments. Furthermore, sugar release upon enzymatic saccharification was enhanced, and this was dependent on the plant biomass and fungal species used in the treatment. To maximise the potential for lignocellulose valorisation, the liquid fractions from the pretreatments were analysed by high performance liquid chromatography - photodiode array detection - electrospray ionisation tandem mass spectrometry (HPLC-PDA-ESI-MS n ). This study is one of the first to report on the composition of WRF-treated grass biomass, while assessing the potential relevance of breakdown products released during the treatments, beyond more traditional sugar-for-energy applications. Ultimately, we expect that our data will help promote the valorisation of unused biomass resources, create economic value, while contributing to the implementation of sustainable biorefining systems.
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Affiliation(s)
- Ricardo M. F. da Costa
- Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, Coimbra, Portugal
| | - Ana Winters
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Aberystwyth, United Kingdom
| | - Barbara Hauck
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Aberystwyth, United Kingdom
| | - Daniel Martín
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, Coimbra, Portugal
| | - Maurice Bosch
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Aberystwyth, United Kingdom
| | - Rachael Simister
- Centre for Novel Agricultural Products, Department of Biology, University of York, York, United Kingdom
| | - Leonardo D. Gomez
- Centre for Novel Agricultural Products, Department of Biology, University of York, York, United Kingdom
| | | | - Jorge M. Canhoto
- Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
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12
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Alsalman FB, Ramaswamy HS. Changes in carbohydrate quality of high-pressure treated aqueous aquafaba. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2020.106417] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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13
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Nath P, Maibam PD, Singh S, Rajulapati V, Goyal A. Sequential pretreatment of sugarcane bagasse by alkali and organosolv for improved delignification and cellulose saccharification by chimera and cellobiohydrolase for bioethanol production. 3 Biotech 2021; 11:59. [PMID: 33489678 DOI: 10.1007/s13205-020-02600-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 12/17/2020] [Indexed: 01/13/2023] Open
Abstract
Sequential pretreatments for sugarcane bagasse (scb) by NaOH followed by organosolv under mild conditions were evaluated for cellulose recovery and dilignification. The best-optimized sequential pretreatment of scb was obtained at 10% (w/v) of raw scb loading at 1% (w/v) NaOH (50 °C, 2 h) followed by treatment with organosolv (85%, v/v phosphoric acid, 50 °C, 1 h) with chilled acetone. This sequentially pretreated scb showed cellulose recovery, 66.1% (w/w) and delignification, 83.2% (w/w). NaOH or organosolv pretreated scb showed lower cellulose recovery 47.4% (w/w) or 54.5% (w/w) with lower delignification, 61% (w/w) or 56% (w/w), respectively. Pretreated solid residue of sequentially pretreated scb was enzymatically saccharified by chimera (β-glucosidase and endoglucanase, CtGH1-L1-CtGH5-F194A) and cellobiohydrolase (CtCBH5A) cloned from Clostridium thermocellum. Enzymatic hydrolysate of best sequentially pretreated scb gave total reducing sugar (TRS) yield, 230 mg/g and glucose yield, 137 mg/g pretreated scb. Only organosolv pretreated scb gave TRS yield, 112.5 mg/g and glucose yield, 72 mg/g of pretreated scb. Thus, sequentially pretreated scb resulted in 37% higher enzymatic digestibility than only orgnaosolv pretreated scb. Higher enzymatic digestibility was supported by higher crystallinity index CrI (45%) than those obtained with only organosolv pretreated (38%) or raw scb (25%). Field Emission Scanning Electron Microscope (FESEM) and Fourier-transform infrared (FT-IR) analyses showed enhanced cellulose exposure in sequentially pretreated scb. Preliminary investigation of bioethanol production at small scale by separate hydrolysis and fermentation (SHF) of enzymatic hydrolysate from best sequentially pretreated scb by Saccharomyces cerevisiae gave maximum ethanol yield of 0.42 g/g of glucose. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s13205-020-02600-y.
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Affiliation(s)
- Priyanka Nath
- Carbohydrate Enzyme Biotechnology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039 India
- DBT PAN-IIT Center for Bioenergy, Indian Institute of Technology Guwahati, Guwahati, Assam India
| | | | - Shweta Singh
- Carbohydrate Enzyme Biotechnology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039 India
- DBT PAN-IIT Center for Bioenergy, Indian Institute of Technology Guwahati, Guwahati, Assam India
| | - Vikky Rajulapati
- Carbohydrate Enzyme Biotechnology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039 India
| | - Arun Goyal
- Carbohydrate Enzyme Biotechnology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039 India
- Centre for Energy, Indian Institute of Technology Guwahati, Guwahati, Assam 781039 India
- DBT PAN-IIT Center for Bioenergy, Indian Institute of Technology Guwahati, Guwahati, Assam India
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14
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Lin HC, Wang BJ, Weng YM. Development and characterization of sodium caseinate edible films cross-linked with genipin. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2019.108813] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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15
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Zoghlami A, Paës G. Lignocellulosic Biomass: Understanding Recalcitrance and Predicting Hydrolysis. Front Chem 2019; 7:874. [PMID: 31921787 PMCID: PMC6930145 DOI: 10.3389/fchem.2019.00874] [Citation(s) in RCA: 204] [Impact Index Per Article: 40.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 12/04/2019] [Indexed: 12/11/2022] Open
Abstract
Lignocellulosic biomass (LB) is an abundant and renewable resource from plants mainly composed of polysaccharides (cellulose and hemicelluloses) and an aromatic polymer (lignin). LB has a high potential as an alternative to fossil resources to produce second-generation biofuels and biosourced chemicals and materials without compromising global food security. One of the major limitations to LB valorisation is its recalcitrance to enzymatic hydrolysis caused by the heterogeneous multi-scale structure of plant cell walls. Factors affecting LB recalcitrance are strongly interconnected and difficult to dissociate. They can be divided into structural factors (cellulose specific surface area, cellulose crystallinity, degree of polymerization, pore size and volume) and chemical factors (composition and content in lignin, hemicelluloses, acetyl groups). Goal of this review is to propose an up-to-date survey of the relative impact of chemical and structural factors on biomass recalcitrance and of the most advanced techniques to evaluate these factors. Also, recent spectral and water-related measurements accurately predicting hydrolysis are presented. Overall, combination of relevant factors and specific measurements gathering simultaneously structural and chemical information should help to develop robust and efficient LB conversion processes into bioproducts.
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Affiliation(s)
- Aya Zoghlami
- FARE Laboratory, INRAE, University of Reims Champagne-Ardenne, Reims, France
| | - Gabriel Paës
- FARE Laboratory, INRAE, University of Reims Champagne-Ardenne, Reims, France
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16
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Dinant S, Wolff N, De Marco F, Vilaine F, Gissot L, Aubry E, Sandt C, Bellini C, Le Hir R. Synchrotron FTIR and Raman spectroscopy provide unique spectral fingerprints for Arabidopsis floral stem vascular tissues. JOURNAL OF EXPERIMENTAL BOTANY 2019; 70:871-884. [PMID: 30407539 DOI: 10.1093/jxb/ery396] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 10/30/2018] [Indexed: 05/22/2023]
Abstract
Cell walls are highly complex structures that are modified during plant growth and development. For example, the development of phloem and xylem vascular cells, which participate in the transport of sugars and water as well as providing support, can be influenced by cell-specific wall composition. Here, we used synchrotron radiation-based Fourier-transform infrared (SR-FTIR) and Raman spectroscopy to analyse the cell wall composition of floral stem vascular tissues of wild-type Arabidopsis and the double-mutant sweet11-1 sweet12-1, which has impaired sugar transport. The SR-FTIR spectra showed that in addition to modified xylem cell wall composition, phloem cell walls in the double-mutant line were characterized by modified hemicellulose composition. Combining Raman spectroscopy with a classification and regression tree (CART) method identified combinations of Raman shifts that could distinguish xylem vessels and fibers. In addition, the disruption of the SWEET11 and SWEET12 genes impacted on xylem wall composition in a cell-specific manner, with changes in hemicelluloses and cellulose observed at the xylem vessel interface. These results suggest that the facilitated transport of sugars by transporters that exist between vascular parenchyma cells and conducting cells is important in ensuring correct phloem and xylem cell wall composition.
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Affiliation(s)
- S Dinant
- Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay,Versailles, France
| | - N Wolff
- Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay,Versailles, France
| | - F De Marco
- Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay,Versailles, France
| | - F Vilaine
- Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay,Versailles, France
| | - L Gissot
- Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay,Versailles, France
| | - E Aubry
- Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay,Versailles, France
| | - C Sandt
- Synchrotron SOLEIL, Ligne SMIS, L'Orme des Merisiers, Gif sur Yvette, France
| | - C Bellini
- Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay,Versailles, France
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, Umeå, Sweden
| | - R Le Hir
- Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay,Versailles, France
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Ostos-Garrido FJ, de Castro AI, Torres-Sánchez J, Pistón F, Peña JM. High-Throughput Phenotyping of Bioethanol Potential in Cereals Using UAV-Based Multi-Spectral Imagery. FRONTIERS IN PLANT SCIENCE 2019; 10:948. [PMID: 31396251 PMCID: PMC6664021 DOI: 10.3389/fpls.2019.00948] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Accepted: 07/08/2019] [Indexed: 05/09/2023]
Abstract
Bioethanol production obtained from cereal straw has aroused great interest in recent years, which has led to the development of breeding programs to improve the quality of lignocellulosic material in terms of the biomass and sugar content. This process requires the analysis of genotype-phenotype relationships, and although genotyping tools are very advanced, phenotypic tools are not usually capable of satisfying the massive evaluation that is required to identify potential characters for bioethanol production in field trials. However, unmanned aerial vehicle (UAV) platforms have demonstrated their capacity for efficient and non-destructive acquisition of crop data with an application in high-throughput phenotyping. This work shows the first evaluation of UAV-based multi-spectral images for estimating bioethanol-related variables (total biomass dry weight, sugar release, and theoretical ethanol yield) of several accessions of wheat, barley, and triticale (234 cereal plots). The full procedure involved several stages: (1) the acquisition of multi-temporal UAV images by a six-band camera along different crop phenology stages (94, 104, 119, 130, 143, 161, and 175 days after sowing), (2) the generation of ortho-mosaicked images of the full field experiment, (3) the image analysis with an object-based (OBIA) algorithm and the calculation of vegetation indices (VIs), (4) the statistical analysis of spectral data and bioethanol-related variables to predict a UAV-based ranking of cereal accessions in terms of theoretical ethanol yield. The UAV-based system captured the high variability observed in the field trials over time. Three VIs created with visible wavebands and four VIs that incorporated the near-infrared (NIR) waveband were studied, obtaining that the NIR-based VIs were the best at estimating the crop biomass, while the visible-based VIs were suitable for estimating crop sugar release. The temporal factor was very helpful in achieving better estimations. The results that were obtained from single dates [i.e., temporal scenario 1 (TS-1)] were always less accurate for estimating the sugar release than those obtained in TS-2 (i.e., averaging the values of each VI obtained during plant anthesis) and less accurate for estimating the crop biomass and theoretical ethanol yield than those obtained in TS-3 (i.e., averaging the values of each VI obtained during full crop development). The highest correlation to theoretical ethanol yield was obtained with the normalized difference vegetation index (R 2 = 0.66), which allowed to rank the cereal accessions in terms of potential for bioethanol production.
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Affiliation(s)
| | - Ana I. de Castro
- Institute for Sustainable Agriculture, Spanish National Research Council (CSIC), Córdoba, Spain
| | - Jorge Torres-Sánchez
- Institute for Sustainable Agriculture, Spanish National Research Council (CSIC), Córdoba, Spain
| | - Fernando Pistón
- Institute for Sustainable Agriculture, Spanish National Research Council (CSIC), Córdoba, Spain
| | - José M. Peña
- Institute of Agricultural Sciences, Spanish National Research Council (CSIC), Madrid, Spain
- *Correspondence: José M. Peña,
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18
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Guo H, Hong C, Zheng B, Jiang D, Qin W. Improving enzymatic digestibility of wheat straw pretreated by a cellulase-free xylanase-secreting Pseudomonas boreopolis G22 with simultaneous production of bioflocculants. BIOTECHNOLOGY FOR BIOFUELS 2018; 11:250. [PMID: 30245742 PMCID: PMC6142706 DOI: 10.1186/s13068-018-1255-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 09/10/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Xylan removal by bacterial pretreatments has been confirmed to increase the digestibility of biomass. Here, an effective xylan removal technique has been developed to enhance the digestibility of wheat straw and simultaneously produce bioflocculants by a cellulase-free xylanase-secreting strain, Pseudomonas boreopolis G22. RESULTS The results indicated that P. boreopolis G22 is an alkaliphilic strain which can secrete abundant amounts of xylanase. This xylanase had activity levels of 2.67-1.75 U mL-1 after an incubation period of 5-25 days. The xylanase showed peak activity levels at pH 8.6, and retained more than 85% relative activity in the pH range of 7.2-9.8. After 15 days of cultivation, the hemicellulose contents of the wheat straw were significantly decreased by 32.5%, while its cellulose contents were increased by 27.3%, compared to that of the control. The maximum reducing sugars released from the 15-day-pretreated wheat straw were 1.8-fold higher than that of the untreated wheat straw, under optimal enzymatic hydrolysis conditions. In addition, a maximum bioflocculant yield of 2.08 g L-1 was extracted from the fermentation broth after 15 days of incubation. The aforementioned bioflocculants could be used to efficiently decolorize a dye solution. CONCLUSIONS The results indicate that the cellulase-free xylanase-secreting P. boreopolis G22 may be a potential strain for wheat straw pretreatments. The strain G22 does not only enhance the enzymatic digestibility of wheat straw, but also simultaneously produces a number of bioflocculants that can be used for various industrial applications.
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Affiliation(s)
- Haipeng Guo
- School of Marine Sciences, Ningbo University, Ningbo, 315211 China
- Department of Biology, Lakehead University, Thunder Bay, ON P7B 5E1 Canada
| | - Chuntao Hong
- Academy of Agricultural Sciences of Ningbo City, Ningbo, 315040 China
| | - Bingsong Zheng
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou, 311300 China
| | - Dean Jiang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310058 China
| | - Wensheng Qin
- Department of Biology, Lakehead University, Thunder Bay, ON P7B 5E1 Canada
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19
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Biodegradable lignocellulosic porous materials: Fabrication, characterization and its application in water processing. Int J Biol Macromol 2018; 115:846-852. [DOI: 10.1016/j.ijbiomac.2018.04.133] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Revised: 04/13/2018] [Accepted: 04/24/2018] [Indexed: 11/18/2022]
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20
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Shen Z, Zhang K, Si M, Liu M, Zhuo S, Liu D, Ren L, Yan X, Shi Y. Synergy of lignocelluloses pretreatment by sodium carbonate and bacterium to enhance enzymatic hydrolysis of rice straw. BIORESOURCE TECHNOLOGY 2018; 249:154-160. [PMID: 29040849 DOI: 10.1016/j.biortech.2017.10.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 10/02/2017] [Accepted: 10/04/2017] [Indexed: 05/27/2023]
Abstract
We studied a new strategy for pretreatment of rice straw (RS) to enhance enzymatic hydrolysis under mild condition. This approach uses the synergy of sodium carbonate (Na2CO3) and the bacterial strain Cupriavidus basilensis B-8 (hereafter B-8). After synergistic Na2CO3 and B-8 pretreatment (SNBP), the reducing sugar yield varied from 335.3mg/g to 799.6mg/g under different conditions. This increased by 13-31% over Na2CO3 pretreatment (284.2-719.2mg/g) and 3.42-8.15times over the untreated RS (98mg/g). Moreover, the composition of RS was changed significantly through decreases in lignin and hemicellulose. We confirmed this change by compositional analysis and physicochemical characterization of the structure of RS before and after pretreatment. We also elaborated a mechanism for SNBP to better explain RS changes and bacterial effects on enzymatic hydrolysis.
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Affiliation(s)
- Zhanhui Shen
- Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Xinxiang 453007, PR China; Henan Key Laboratory for Environmental Pollution Control, Xinxiang 453007, PR China; School of Environment, Henan Normal University, Xinxiang 453007, PR China
| | - Kejing Zhang
- School of Metallurgy and Environment, Central South University, Changsha 410083, PR China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha 410083, PR China
| | - Mengying Si
- School of Metallurgy and Environment, Central South University, Changsha 410083, PR China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha 410083, PR China
| | - Mingren Liu
- School of Metallurgy and Environment, Central South University, Changsha 410083, PR China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha 410083, PR China
| | - Shengnan Zhuo
- School of Metallurgy and Environment, Central South University, Changsha 410083, PR China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha 410083, PR China
| | - Dan Liu
- School of Metallurgy and Environment, Central South University, Changsha 410083, PR China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha 410083, PR China
| | - Lili Ren
- School of Metallurgy and Environment, Central South University, Changsha 410083, PR China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha 410083, PR China
| | - Xu Yan
- School of Metallurgy and Environment, Central South University, Changsha 410083, PR China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha 410083, PR China
| | - Yan Shi
- Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Xinxiang 453007, PR China; Henan Key Laboratory for Environmental Pollution Control, Xinxiang 453007, PR China; School of Environment, Henan Normal University, Xinxiang 453007, PR China; School of Metallurgy and Environment, Central South University, Changsha 410083, PR China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha 410083, PR China.
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21
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Khatri V, Meddeb-Mouelhi F, Adjallé K, Barnabé S, Beauregard M. Determination of optimal biomass pretreatment strategies for biofuel production: investigation of relationships between surface-exposed polysaccharides and their enzymatic conversion using carbohydrate-binding modules. BIOTECHNOLOGY FOR BIOFUELS 2018; 11:144. [PMID: 29796085 PMCID: PMC5960114 DOI: 10.1186/s13068-018-1145-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 05/09/2018] [Indexed: 05/03/2023]
Abstract
BACKGROUND Pretreatment of lignocellulosic biomass (LCB) is a key step for its efficient bioconversion into ethanol. Determining the best pretreatment and its parameters requires monitoring its impacts on the biomass material. Here, we used fluorescent protein-tagged carbohydrate-binding modules method (FTCM)-depletion assay to study the relationship between surface-exposed polysaccharides and enzymatic hydrolysis of LCB. RESULTS Our results indicated that alkali extrusion pretreatment led to the highest hydrolysis rates for alfalfa stover, cattail stems and flax shives, despite its lower lignin removal efficiency compared to alkali pretreatment. Corn crop residues were more sensitive to alkali pretreatments, leading to higher hydrolysis rates. A clear relationship was consistently observed between total surface-exposed cellulose detected by the FTCM-depletion assay and biomass enzymatic hydrolysis. Comparison of bioconversion yield and total composition analysis (by NREL/TP-510-42618) of LCB prior to or after pretreatments did not show any close relationship. Lignin removal efficiency and total cellulose content (by NREL/TP-510-42618) led to an unreliable prediction of enzymatic polysaccharide hydrolysis. CONCLUSIONS Fluorescent protein-tagged carbohydrate-binding modules method (FTCM)-depletion assay provided direct evidence that cellulose exposure is the key determinant of hydrolysis yield. The clear and robust relationships that were observed between the cellulose accessibility by FTCM probes and enzymatic hydrolysis rates change could be evolved into a powerful prediction tool that might help develop optimal biomass pretreatment strategies for biofuel production.
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Affiliation(s)
- Vinay Khatri
- Centre de recherche sur les matériaux lignocellulosiques, Université du Québec à Trois-Rivières, C.P. 500, Trois-Rivières, QC G9A 5H7 Canada
- PROTEO, Université Laval, Québec, QC G1V 4G2 Canada
| | - Fatma Meddeb-Mouelhi
- Centre de recherche sur les matériaux lignocellulosiques, Université du Québec à Trois-Rivières, C.P. 500, Trois-Rivières, QC G9A 5H7 Canada
- PROTEO, Université Laval, Québec, QC G1V 4G2 Canada
| | - Kokou Adjallé
- Centre de recherche sur les matériaux lignocellulosiques, Université du Québec à Trois-Rivières, C.P. 500, Trois-Rivières, QC G9A 5H7 Canada
| | - Simon Barnabé
- Centre de recherche sur les matériaux lignocellulosiques, Université du Québec à Trois-Rivières, C.P. 500, Trois-Rivières, QC G9A 5H7 Canada
| | - Marc Beauregard
- Centre de recherche sur les matériaux lignocellulosiques, Université du Québec à Trois-Rivières, C.P. 500, Trois-Rivières, QC G9A 5H7 Canada
- PROTEO, Université Laval, Québec, QC G1V 4G2 Canada
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22
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Gómez-Muñoz B, Larsen JD, Bekiaris G, Scheutz C, Bruun S, Nielsen S, Jensen LS. Nitrogen mineralisation and greenhouse gas emission from the soil application of sludge from reed bed mineralisation systems. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2017; 203:59-67. [PMID: 28778006 DOI: 10.1016/j.jenvman.2017.07.042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 07/13/2017] [Accepted: 07/15/2017] [Indexed: 06/07/2023]
Abstract
A sludge treatment reed bed system (STRB) is a technology used for dewatering and stabilising sewage sludge via assisted biological mineralisation, which creates a sludge residue suitable for use as fertiliser on agricultural land. We evaluated the effect of sludge residue storage time (stabilisation time) for three STRBs on soil N mineralisation and CO2 and N2O emissions in soil. The experiment revealed that the N mineralisation rate and emissions of CO2 and N2O decreased as a function of treatment time in the STRBs. Mixed sludge residue (sludge residue subjected to different treatment times) for the three STRBs resulted in N mineralisation rates similar to the sludge residue subjected to a shorter treatment time but lower N2O emissions similar to the values of the older sludge residue. This finding reveals that combining fresh and more stabilised sludge residue ensures high N availability and reduces N2O emissions when applied to land.
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Affiliation(s)
- B Gómez-Muñoz
- Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, DK-1871, Frederiksberg C, Denmark
| | - J D Larsen
- Department of Environmental Engineering, Technical University of Denmark, Building 113, 2800, Kgs. Lyngby, Denmark; Orbicon A/S, Ringstedvej 20, 4000, Roskilde, Denmark
| | - G Bekiaris
- Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, DK-1871, Frederiksberg C, Denmark
| | - C Scheutz
- Department of Environmental Engineering, Technical University of Denmark, Building 113, 2800, Kgs. Lyngby, Denmark
| | - S Bruun
- Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, DK-1871, Frederiksberg C, Denmark
| | - S Nielsen
- Orbicon A/S, Ringstedvej 20, 4000, Roskilde, Denmark.
| | - L S Jensen
- Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, DK-1871, Frederiksberg C, Denmark
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Collins SRA, Wilson DR, Moates GK, Harper AL, Bancroft I, Waldron KW. Variation across a wheat genetic diversity panel for saccharification of hydrothermally pretreated straw. BIOTECHNOLOGY FOR BIOFUELS 2017; 10:227. [PMID: 29026442 PMCID: PMC5625621 DOI: 10.1186/s13068-017-0914-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 09/19/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND Wheat straw forms an important, reliable source of lignocellulosic biomass for use in second-generation ethanol production. However, there is limited understanding of the variation in quality of straw from current breeding cultivars, and studies on such variation have generally employed suboptimal pretreatments. There is also a degree of confusion regarding phenotypic characteristics relevant to optimising the enzymatic saccharification of cellulose after suitable pretreatments for biorefining compared with those which determine good ruminant digestibility. The aim of this study has been to (a) evaluate and compare the levels of glucose enzymatically released from straw obtained from 89 cultivars of winter wheat after optimised hydrothermal pretreatments and (b) identify the underlying phenotypic characteristics relevant to enhanced glucose production with special reference to the ratios of constituent tissue types. RESULTS Optimised pretreatment involved hydrothermal extraction at 210 °C for 10 min. Using excess cellulases, quantitative saccharification was achieved within 24 h. The amount of glucose released ranged from 192 to 275 mg/g. The extent of glucose release was correlated with (a) the level of internode tissue (R = 0.498; p = 6.84 × 10-7), (b) stem height (R = 0.491; p = 1.03 × 10-6), and (c) chemical characteristics particular to stem tissues including higher levels of cellulose (R = 0.552; p = 2.06 × 10-8) and higher levels of lignin R = 0.494; p = 8.67 × 10-7. CONCLUSIONS In order to achieve maximum yields of cellulosic glucose for second-generation ethanol production, a predisposition for wheat to produce cellulose-enriched internode stem tissue, particularly of longer length, would be beneficial. This contrasts with the ideotype for ruminant nutrition, in which an increased proportion of leaf tissue is preferable.
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Affiliation(s)
- Samuel R. A. Collins
- The Biorefinery Centre, Quadram Institute Bioscience, Norwich Research Park, Colney, Norwich, NR4 7UA UK
| | - David R. Wilson
- The Biorefinery Centre, Quadram Institute Bioscience, Norwich Research Park, Colney, Norwich, NR4 7UA UK
| | - Graham K. Moates
- The Biorefinery Centre, Quadram Institute Bioscience, Norwich Research Park, Colney, Norwich, NR4 7UA UK
| | - Andrea L. Harper
- Department of Biology, University of York, Wentworth Way, Heslington, York, YO10 5DD UK
| | - Ian Bancroft
- Department of Biology, University of York, Wentworth Way, Heslington, York, YO10 5DD UK
| | - Keith W. Waldron
- The Biorefinery Centre, Quadram Institute Bioscience, Norwich Research Park, Colney, Norwich, NR4 7UA UK
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24
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Auxenfans T, Terryn C, Paës G. Seeing biomass recalcitrance through fluorescence. Sci Rep 2017; 7:8838. [PMID: 28821835 PMCID: PMC5562871 DOI: 10.1038/s41598-017-08740-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Accepted: 07/17/2017] [Indexed: 11/09/2022] Open
Abstract
Lignocellulosic biomass is the only renewable carbon resource available in sufficient amount on Earth to go beyond the fossil-based carbon economy. Its transformation requires controlled breakdown of polymers into a set of molecules to make fuels, chemicals and materials. But biomass is a network of various inter-connected polymers which are very difficult to deconstruct optimally. In particular, saccharification potential of lignocellulosic biomass depends on several complex chemical and physical factors. For the first time, an easily measurable fluorescence properties of steam-exploded biomass samples from miscanthus, poplar and wheat straw was shown to be directly correlated to their saccharification potential. Fluorescence can thus be advantageously used as a predictive method of biomass saccharification. The loss in fluorescence occurring after the steam explosion pretreatment and increasing with pretreatment severity does not originate from the loss in lignin content, but rather from a decrease of the lignin β-aryl-ether linkage content. Fluorescence lifetime analysis demonstrates that monolignols making lignin become highly conjugated after steam explosion pretreatment. These results reveal that lignin chemical composition is a more important feature to consider than its content to understand and to predict biomass saccharification.
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Affiliation(s)
- Thomas Auxenfans
- FARE laboratory, INRA, University of Reims Champagne-Ardenne, 2 esplanade Roland-Garros, 51100, Reims, France
| | - Christine Terryn
- PICT platform, University of Reims Champagne-Ardenne, 45 rue Cognacq-Jay, 51100, Reims, France
| | - Gabriel Paës
- FARE laboratory, INRA, University of Reims Champagne-Ardenne, 2 esplanade Roland-Garros, 51100, Reims, France.
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Bellucci A, Torp AM, Bruun S, Magid J, Andersen SB, Rasmussen SK. Association Mapping in Scandinavian Winter Wheat for Yield, Plant Height, and Traits Important for Second-Generation Bioethanol Production. FRONTIERS IN PLANT SCIENCE 2015; 6:1046. [PMID: 26635859 PMCID: PMC4660856 DOI: 10.3389/fpls.2015.01046] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Accepted: 11/09/2015] [Indexed: 05/04/2023]
Abstract
A collection of 100 wheat varieties representing more than 100 years of wheat-breeding history in Scandinavia was established in order to identify marker-trait associations for plant height (PH), grain yield (GY), and biomass potential for bioethanol production. The field-grown material showed variations in PH from 54 to 122 cm and in GY from 2 to 6.61 t ha(-1). The release of monomeric sugars was determined by high-throughput enzymatic treatment of ligno-cellulosic material and varied between 0.169 and 0.312 g/g dm for glucose (GLU) and 0.146 and 0.283 g/g dm for xylose (XYL). As expected, PH and GY showed to be highly influenced by genetic factors with repeatability (R) equal to 0.75 and 0.53, respectively, while this was reduced for GLU and XYL (R = 0.09 for both). The study of trait correlations showed how old, low-yielding, tall varieties released higher amounts of monomeric sugars after straw enzymatic hydrolysis, showing reduced recalcitrance to bioconversion compared to modern varieties. Ninety-three lines from the collection were genotyped with the DArTseq(®) genotypic platform and 5525 markers were used for genome-wide association mapping. Six quantitative trait loci (QTLs) for GY, PH, and GLU released from straw were mapped. One QTL for PH was previously reported, while the remaining QTLs constituted new genomic regions linked to trait variation. This paper is one of the first studies in wheat to identify QTLs that are important for bioethanol production based on a genome-wide association approach.
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Affiliation(s)
| | | | | | | | | | - Søren K. Rasmussen
- Plant and Soil Section, Department of Plant and Environmental Sciences, Faculty of Science, University of CopenhagenFrederiksberg, Denmark
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