1
|
Baron RI, Biliuta G, Macsim AM, Dinu MV, Coseri S. Chemistry of Hydroxypropyl Cellulose Oxidized by Two Selective Oxidants. Polymers (Basel) 2023; 15:3930. [PMID: 37835978 PMCID: PMC10574994 DOI: 10.3390/polym15193930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 09/25/2023] [Accepted: 09/27/2023] [Indexed: 10/15/2023] Open
Abstract
Along with the increased usage of cellulose in the manufacture of novel materials, those of its derivatives that have good solubility in water or organic solvents have become increasingly important. In this study, hydroxypropyl cellulose (HPC), a cellulosic derivative with distinct features, was utilized to investigate how two of the most-selective oxidation methods currently available in the literature act on the constituent OH groups of both the side chain and the anhydroglycosidic unit in HPC. The oxidation reactions were carried out first using TEMPO, sodium hypochlorite, and sodium bromide, then sodium periodate (NaIO4), for 5 h. A combination of these two protocols was applied. The amount of aldehyde and number of carboxylic groups introduced after oxidation was determined, while the changes in the morphological features of oxidized HPC were, additionally, assessed. Furthermore, utilizing Fourier-transform infrared spectra, X-ray diffraction, and thermogravimetric studies, the chemical structure, crystallinity, and thermal stability of the oxidized HPC samples were examined and compared.
Collapse
Affiliation(s)
- Raluca Ioana Baron
- “Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy, 41 A Gr. Ghica Voda Alley, 700487 Iasi, Romania; (G.B.); (M.V.D.)
| | | | | | | | - Sergiu Coseri
- “Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy, 41 A Gr. Ghica Voda Alley, 700487 Iasi, Romania; (G.B.); (M.V.D.)
| |
Collapse
|
2
|
Nagl M, Haske-Cornelius O, Bauer W, Csarman F, Ludwig R, Nyanhongo GS, Guebitz GM. Towards a better understanding of synergistic enzyme effects during refining of cellulose fibers. CARBOHYDRATE POLYMER TECHNOLOGIES AND APPLICATIONS 2022. [DOI: 10.1016/j.carpta.2022.100223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
|
3
|
Morán-Aguilar MG, Calderón-Santoyo M, de Souza Oliveira RP, Aguilar-Uscanga MG, Domínguez JM. Deconstructing sugarcane bagasse lignocellulose by acid-based deep eutectic solvents to enhance enzymatic digestibility. Carbohydr Polym 2022; 298:120097. [DOI: 10.1016/j.carbpol.2022.120097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Revised: 09/05/2022] [Accepted: 09/06/2022] [Indexed: 11/28/2022]
|
4
|
Kolvari E, Marandi A, Kheyrodine N. Magnetic cellulose nanocrystals as efficient support for indium(III) in the synthesis of tetrazoles and phthalazines. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
5
|
Parra-Campos A, Serna-Cock L, Solanilla-Duque JF. Effect of the addition of fique bagasse microparticles in obtaining a biobased material based on cassava starch. Int J Biol Macromol 2022; 207:289-298. [PMID: 35259438 DOI: 10.1016/j.ijbiomac.2022.03.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 02/27/2022] [Accepted: 03/03/2022] [Indexed: 12/13/2022]
Abstract
The indiscriminate accumulation of plastic waste has prompted research that leads to obtaining biobased materials. The research aim was to evaluate the effect of incorporating fique bagasse microparticles (FBM) in a cassava starch-based foamed material. First, the FBM extraction conditions were established by acid hydrolysis, for which the effect of acid concentration (5, 10 and 15% H2SO4), temperature (70, 80 and 90 °C) and extraction time (3, 5 and 7 h) on particle size, functional groups, color, and thermal properties was evaluated. The addition of FBM to the foamed material was then carried out. To do this, a completely randomized design with five treatments (0, 0.5, 0.75, 1.0 and 1.25% FBM) was evaluated. The response variables were the apparent density, expansion and spring index, compressibility, water absorption, thermal properties and FTIR. The results showed that the acid concentration, temperature and time had an effect on the morphological, chemical and thermal properties of FBM, with 10%, 70 °C and 7 h being the conditions that allowed obtaining the smallest particle size (61.69 ± 12.88 μm2). Moreover, the FBM concentration had a significant effect on the physical and mechanical properties of the foam, unleashing the treatment properties of 0.75%. This indicates that FBM have potential for use in obtaining biobased materials.
Collapse
Affiliation(s)
- Amanda Parra-Campos
- Facultad de Ingeniería y Administración, Universidad Nacional de Colombia, Sede Palmira, 763533, Valle del Cauca, Colombia.
| | - Liliana Serna-Cock
- Facultad de Ingeniería y Administración, Universidad Nacional de Colombia, Sede Palmira, 763533, Valle del Cauca, Colombia.
| | | |
Collapse
|
6
|
Shokri S, Hedjazi S, Lê HQ, Abdulkhani A, Sixta H. High-purity cellulose production from birch wood by γ-valerolactone/water fractionation and IONCELL-P process. Carbohydr Polym 2022; 288:119364. [DOI: 10.1016/j.carbpol.2022.119364] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 03/08/2022] [Accepted: 03/14/2022] [Indexed: 11/02/2022]
|
7
|
Zhao X, Meng X, Ragauskas AJ, Lai C, Ling Z, Huang C, Yong Q. Unlocking the secret of lignin-enzyme interactions: Recent advances in developing state-of-the-art analytical techniques. Biotechnol Adv 2021; 54:107830. [PMID: 34480987 DOI: 10.1016/j.biotechadv.2021.107830] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 08/07/2021] [Accepted: 08/29/2021] [Indexed: 02/08/2023]
Abstract
Bioconversion of renewable lignocellulosics to produce liquid fuels and chemicals is one of the most effective ways to solve the problem of fossil resource shortage, energy security, and environmental challenges. Among the many biorefinery pathways, hydrolysis of lignocellulosics to fermentable monosaccharides by cellulase is arguably the most critical step of lignocellulose bioconversion. In the process of enzymatic hydrolysis, the direct physical contact between enzymes and cellulose is an essential prerequisite for the hydrolysis to occur. However, lignin is considered one of the most recalcitrant factors hindering the accessibility of cellulose by binding to cellulase unproductively, which reduces the saccharification rate and yield of sugars. This results in high costs for the saccharification of carbohydrates. The various interactions between enzymes and lignin have been explored from different perspectives in literature, and a basic lignin inhibition mechanism has been proposed. However, the exact interaction between lignin and enzyme as well as the recently reported promotion of some types of lignin on enzymatic hydrolysis is still unclear at the molecular level. Multiple analytical techniques have been developed, and fully unlocking the secret of lignin-enzyme interactions would require a continuous improvement of the currently available analytical techniques. This review summarizes the current commonly used advanced research analytical techniques for investigating the interaction between lignin and enzyme, including quartz crystal microbalance with dissipation (QCM-D), surface plasmon resonance (SPR), attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy, atomic force microscopy (AFM), nuclear magnetic resonance (NMR) spectroscopy, fluorescence spectroscopy (FLS), and molecular dynamics (MD) simulations. Interdisciplinary integration of these analytical methods is pursued to provide new insight into the interactions between lignin and enzymes. This review will serve as a resource for future research seeking to develop new methodologies for a better understanding of the basic mechanism of lignin-enzyme binding during the critical hydrolysis process.
Collapse
Affiliation(s)
- Xiaoxue Zhao
- Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, Department of Bioengineering, Nanjing Forestry University, Nanjing 210037, China
| | - Xianzhi Meng
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996, USA
| | - Arthur J Ragauskas
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996, USA; Center for Renewable Carbon, Department of Forestry, Wildlife and Fisheries, University of Tennessee, Knoxville, TN 37996, USA; Joint Institute for Biological Sciences, Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Chenhuan Lai
- Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, Department of Bioengineering, Nanjing Forestry University, Nanjing 210037, China
| | - Zhe Ling
- Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, Department of Bioengineering, Nanjing Forestry University, Nanjing 210037, China
| | - Caoxing Huang
- Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, Department of Bioengineering, Nanjing Forestry University, Nanjing 210037, China.
| | - Qiang Yong
- Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, Department of Bioengineering, Nanjing Forestry University, Nanjing 210037, China.
| |
Collapse
|
8
|
Importance of Interfacial Adhesion Condition on Characterization of Plant-Fiber-Reinforced Polymer Composites: A Review. Polymers (Basel) 2021; 13:polym13030438. [PMID: 33573036 PMCID: PMC7866398 DOI: 10.3390/polym13030438] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 01/19/2021] [Accepted: 01/21/2021] [Indexed: 12/13/2022] Open
Abstract
Plant fibers have become a highly sought-after material in the recent days as a result of raising environmental awareness and the realization of harmful effects imposed by synthetic fibers. Natural plant fibers have been widely used as fillers in fabricating plant-fibers-reinforced polymer composites. However, owing to the completely opposite nature of the plant fibers and polymer matrix, treatment is often required to enhance the compatibility between these two materials. Interfacial adhesion mechanisms are among the most influential yet seldom discussed factors that affect the physical, mechanical, and thermal properties of the plant-fibers-reinforced polymer composites. Therefore, this review paper expounds the importance of interfacial adhesion condition on the properties of plant-fiber-reinforced polymer composites. The advantages and disadvantages of natural plant fibers are discussed. Four important interface mechanism, namely interdiffusion, electrostatic adhesion, chemical adhesion, and mechanical interlocking are highlighted. In addition, quantifying and analysis techniques of interfacial adhesion condition is demonstrated. Lastly, the importance of interfacial adhesion condition on the performances of the plant fiber polymer composites performances is discussed. It can be seen that the physical and thermal properties as well as flexural strength of the composites are highly dependent on the interfacial adhesion condition.
Collapse
|
9
|
Luzi F, Puglia D, Sarasini F, Tirillò J, Maffei G, Zuorro A, Lavecchia R, Kenny J, Torre L. Valorization and extraction of cellulose nanocrystals from North African grass: Ampelodesmos mauritanicus (Diss). Carbohydr Polym 2019; 209:328-337. [DOI: 10.1016/j.carbpol.2019.01.048] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 01/12/2019] [Accepted: 01/14/2019] [Indexed: 02/08/2023]
|
10
|
Tsegaye B, Balomajumder C, Roy P. Alkali pretreatment of wheat straw followed by microbial hydrolysis for bioethanol production. ENVIRONMENTAL TECHNOLOGY 2019; 40:1203-1211. [PMID: 29251554 DOI: 10.1080/09593330.2017.1418911] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
The combination of NaOH pretreatment and microorganisms isolated from termite was used for releasing wrapped polysaccharides from wheat straw biomass matrix. Different concentrations of NaOH (1%, 3%, 5%, 7% and 10%) were considered to remove lignin and to release polysaccharides as a pretreatment method at 80°C for 4 h before subjecting it to microbial hydrolysis. Data obtained from compositional analysis of pretreated wheat straws show that a significant amount of cellulose and lignin were released after NaOH pretreatments. The amount of cellulose and lignin released was increased with increasing concentration of NaOH in the pretreatment solution. Further analysis of X-Ray diffraction, field emission scanning electron microscope and Fourier transform infrared spectroscopy confirms the removal of lignin and release of cellulose. About 69.5% of lignin was solubilized and 72.67% of cellulose was released after 10% NaOH pretreatment which was the maximum. Data from spectrophotometric analysis of reducing sugar by the 3,5-dinitrosalycilic acid method show that 83.68% (0.706 g/100 ml) of polysaccharides were converted to glucose and xylose by isolated bacteria after the 15th day of hydrolysis.
Collapse
Affiliation(s)
- Bahiru Tsegaye
- a Department of Chemical Engineering , Indian Institute of Technology Roorkee , Roorkee , India
| | - Chandrajit Balomajumder
- a Department of Chemical Engineering , Indian Institute of Technology Roorkee , Roorkee , India
| | - Partha Roy
- b Department of Biotechnology , Indian Institute of Technology Roorkee , Roorkee , India
| |
Collapse
|
11
|
Characteristics of the chemical processes induced by celluloses in the model and gluten dough studied with application of FTIR spectroscopy. Food Hydrocoll 2018. [DOI: 10.1016/j.foodhyd.2018.07.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
|
12
|
Singh JK, Sharma RK, Ghosh P, Kumar A, Khan ML. Imidazolium Based Ionic Liquids: A Promising Green Solvent for Water Hyacinth Biomass Deconstruction. Front Chem 2018; 6:548. [PMID: 30519555 PMCID: PMC6258793 DOI: 10.3389/fchem.2018.00548] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Accepted: 10/22/2018] [Indexed: 11/20/2022] Open
Abstract
Water hyacinth (WH) is a troublesome aquatic weed of natural and artificial water bodies of India and other tropical countries and causing severe ecological problems. The WH biomass is low in lignin content and contains high amount of cellulose and hemicellulose, making it suitable material for conversion into liquid fuels for energy production. This study highlighted that, how different imidazolium based ionic liquids (ILs) [1-alkyl-3-methylimidazolium bromide, [Cnmim]Br (n = 2, 4, 6, 8, and 10)] with tunable properties can be employed for the degradation of WH biomass. Different characterizations techniques, such as XRD, FT-IR, SEM, and DSC are used to unravel the interplay between ILs and the biomass. In this study, it is observed that [Emim][Br] pretreated samples have maximum crystalline value (Crl = 26.38%) as compared to other ionic liquids pretreatments. FTIR data showed the removal of lignin from WH biomass by 12.77% for [Emim][Br] and 10.74% for [Edmim][Br]. SEM images have proven that [Emim][Br] pretreatment have altered the structure of biomass the most. Our results proved that IL pretreatment is a promising approach for effective treatment of WH biomass and causes high levels disruption of cellulose structure.
Collapse
Affiliation(s)
- Jitendra Kumar Singh
- Metagenomics and Secretomics Research Laboratory, Department of Botany, Dr. Harisingh Gour Central University, Sagar, India
| | - Rahul Kumar Sharma
- Department of Chemistry, School of Chemical Sciences and Technology, Dr. Harisingh Gour Central University, Sagar, India
| | - Pushpal Ghosh
- Department of Chemistry, School of Chemical Sciences and Technology, Dr. Harisingh Gour Central University, Sagar, India
| | - Ashwani Kumar
- Metagenomics and Secretomics Research Laboratory, Department of Botany, Dr. Harisingh Gour Central University, Sagar, India
| | - Mohammed Latif Khan
- Metagenomics and Secretomics Research Laboratory, Department of Botany, Dr. Harisingh Gour Central University, Sagar, India
| |
Collapse
|
13
|
Cantero-Tubilla B, Walker LP. Transformations to reduce the effect of particle size in mid-infrared spectra of biomass. Analyst 2018; 143:5191-5201. [PMID: 30264834 DOI: 10.1039/c8an01137k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fourier Transform InfraRed (FTIR) spectroscopy is a very powerful technique for the characterization of the chemical composition of biomass and its modifications occurring during thermochemical and chemical pretreatments. However, method development is necessary to generate reproducible signals that can be used in combination with multivariate techniques (such as principal component analysis, PCA) to extract meaningful information on biomass composition and bond cleavage. Particle size is a great source of spectra variability in FTIR of biomass. The FTIR signal for an array of particle sizes (2-0.075 mm) was evaluated for hardwood and switchgrass, revealing that 0.5 mm renders higher intensity and spectral reproducibility for both the FTIR sampling techniques investigated (ATR and HTS-XT). Furthermore, the suitability of different signal processing approaches to decrease particle size variability of spectral signals was tested (signal normalization, derivation, and their combination). Normalization showed the highest contribution to enhance ATR spectral reproducibility of both biomass, as statistically shown by the 5-fold decrease of the ratio of signal variance with magnitude of spectral features (VM ratio) with respect to the unprocessed signal. Spectral signal analysis in combination with multivariate statistics (PCA) was used to extract information about the chemical differences between hardwood and switchgrass. The agreement of the biomass composition findings from FTIR-PCA and literature wet chemistry results (acid hydrolysis) contributed to corroborating that FTIR combined with PCA is a clean, quick, efficient, and versatile technique with potential to analyze and characterize biomass composition.
Collapse
Affiliation(s)
- Borja Cantero-Tubilla
- Robert Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY 14853, USA.
| | | |
Collapse
|
14
|
Interfacial Characterization by Pull-Out Test of Bamboo Fibers Embedded in Poly(Lactic Acid). FIBERS 2018. [DOI: 10.3390/fib6010007] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
15
|
Mhd Haniffa MAC, Ching YC, Chuah CH, Yong Ching K, Nazri N, Abdullah LC, Nai-Shang L. Effect of TEMPO-oxidization and rapid cooling on thermo-structural properties of nanocellulose. Carbohydr Polym 2017; 173:91-99. [DOI: 10.1016/j.carbpol.2017.05.084] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2016] [Revised: 05/01/2017] [Accepted: 05/25/2017] [Indexed: 10/19/2022]
|
16
|
Odoch M, Buys EM, Taylor JR. Mechanism of cassava tuber cell wall weakening by dilute sodium hydroxide steeping. Food Chem 2017; 228:338-347. [DOI: 10.1016/j.foodchem.2017.02.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Revised: 02/01/2017] [Accepted: 02/01/2017] [Indexed: 11/28/2022]
|
17
|
El Oudiani A, Msahli S, Sakli F. In-depth study of agave fiber structure using Fourier transform infrared spectroscopy. Carbohydr Polym 2017; 164:242-248. [DOI: 10.1016/j.carbpol.2017.01.091] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2016] [Revised: 01/22/2017] [Accepted: 01/25/2017] [Indexed: 10/20/2022]
|
18
|
Bekiaris G, Lindedam J, Peltre C, Decker SR, Turner GB, Magid J, Bruun S. Rapid estimation of sugar release from winter wheat straw during bioethanol production using FTIR-photoacoustic spectroscopy. BIOTECHNOLOGY FOR BIOFUELS 2015; 8:85. [PMID: 26110018 PMCID: PMC4479319 DOI: 10.1186/s13068-015-0267-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Accepted: 06/03/2015] [Indexed: 05/09/2023]
Abstract
BACKGROUND Complexity and high cost are the main limitations for high-throughput screening methods for the estimation of the sugar release from plant materials during bioethanol production. In addition, it is important that we improve our understanding of the mechanisms by which different chemical components are affecting the degradability of plant material. In this study, Fourier transform infrared photoacoustic spectroscopy (FTIR-PAS) was combined with advanced chemometrics to develop calibration models predicting the amount of sugars released after pretreatment and enzymatic hydrolysis of wheat straw during bioethanol production, and the spectra were analysed to identify components associated with recalcitrance. RESULTS A total of 1122 wheat straw samples from nine different locations in Denmark and one location in the United Kingdom, spanning a large variation in genetic material and environmental conditions during growth, were analysed. The FTIR-PAS spectra of non-pretreated wheat straw were correlated with the measured sugar release, determined by a high-throughput pretreatment and enzymatic hydrolysis (HTPH) assay. A partial least square regression (PLSR) calibration model predicting the glucose and xylose release was developed. The interpretation of the regression coefficients revealed a positive correlation between the released glucose and xylose with easily hydrolysable compounds, such as amorphous cellulose and hemicellulose. Additionally, a negative correlation with crystalline cellulose and lignin, which inhibits cellulose and hemicellulose hydrolysis, was observed. CONCLUSIONS FTIR-PAS was used as a reliable method for the rapid estimation of sugar release during bioethanol production. The spectra revealed that lignin inhibited the hydrolysis of polysaccharides into monomers, while the crystallinity of cellulose retarded its hydrolysis into glucose. Amorphous cellulose and xylans were found to contribute significantly to the released amounts of glucose and xylose, respectively.
Collapse
Affiliation(s)
- Georgios Bekiaris
- />Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg, C DK-1871 Denmark
| | - Jane Lindedam
- />Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg, C DK-1871 Denmark
| | - Clément Peltre
- />Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg, C DK-1871 Denmark
| | - Stephen R. Decker
- />National Renewable Energy Laboratory, Biosciences Center, 15013 Denver West Parkway, Golden, Colorado 80401 USA
| | - Geoffrey B. Turner
- />National Renewable Energy Laboratory, Biosciences Center, 15013 Denver West Parkway, Golden, Colorado 80401 USA
| | - Jakob Magid
- />Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg, C DK-1871 Denmark
| | - Sander Bruun
- />Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg, C DK-1871 Denmark
| |
Collapse
|
19
|
Rodrigues MA, Teixeira RSS, Ferreira-Leitão VS, da Silva Bon EP. Untreated Chlorella homosphaera biomass allows for high rates of cell wall glucan enzymatic hydrolysis when using exoglucanase-free cellulases. BIOTECHNOLOGY FOR BIOFUELS 2015; 8:25. [PMID: 25763103 PMCID: PMC4356055 DOI: 10.1186/s13068-015-0215-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Accepted: 01/29/2015] [Indexed: 05/16/2023]
Abstract
BACKGROUND Chlorophyte microalgae have a cell wall containing a large quantity of cellulose Iα with a triclinic unit cell hydrogen-bonding pattern that is more susceptible to hydrolysis than that of the cellulose Iβ polymorphic form that is predominant in higher plants. This study addressed the enzymatic hydrolysis of untreated Chlorella homosphaera biomass using selected enzyme preparations, aiming to identify the relevant activity profile for the microalgae cellulose hydrolysis. Enzymes from Acremonium cellulolyticus, which secretes a complete pool of cellulases plus β-glucosidase; Trichoderma reesei, which secretes a complete pool of cellulases with low β-glucosidase; Aspergillus awamori, which secretes endoglucanases and β-glucosidase; blends of T. reesei-A. awamori or A. awamori-A. cellulolyticus enzymes; and a purified A. awamori β-glucosidase were evaluated. RESULTS The highest initial glucan hydrolysis rate of 140.3 mg/g/h was observed for A. awamori enzymes with high β-glucosidase, low endoglucanase, and negligible cellobiohydrolase activities. The initial hydrolysis rates when using A. cellulolyticus or T. reesei enzymes were significantly lower, whereas the results for the T. reesei-A. awamori and A. awamori-A. cellulolyticus blends were similar to that for the A. awamori enzymes. Thus, the hydrolysis of C. homosphaera cellulose was performed exclusively by the endoglucanase and β-glucosidase activities. X-ray diffraction data showing negligible cellulose crystallinity for untreated C. homosphaera biomass corroborate these findings. The A. awamori-A. cellulolyticus blend showed the highest initial polysaccharide hydrolysis rate of 185.6 mg/g/h, as measured by glucose equivalent, in addition to the highest predicted maximum glucan hydrolysis yield of 47% of total glucose (w/w). T. reesei enzymes showed the lowest predicted maximum glucan hydrolysis yield of 25% (w/w), whereas the maximum yields of approximately 31% were observed for the other enzyme preparations. The hydrolysis yields were proportional to the enzyme β-glucosidase load, indicating that the endoglucanase load was not rate-limiting. CONCLUSIONS High rates of enzymatic hydrolysis were achieved for untreated C. homosphaera biomass with enzymes containing endoglucanase and β-glucosidase activities and devoid of cellobiohydrolase activity. These findings simplify the complexity of the enzyme pools required for the enzymatic hydrolysis of microalgal biomass decreasing the enzyme cost for the production of microalgae-derived glucose syrups.
Collapse
Affiliation(s)
- Marcoaurélio Almenara Rodrigues
- />Federal University of Rio de Janeiro, Institute of Chemistry, Department of Biochemistry, Applied Photosynthesis Laboratory, Athos Avenida da Silveria Ramos, 149-Technology Centre, Block A, Room 532, University City, Rio de Janeiro, RJ 21941-909 Brazil
| | - Ricardo Sposina Sobral Teixeira
- />Federal University of Rio de Janeiro, Institute of Chemistry, Department of Biochemistry, Enzyme Technology Laboratory, 21941-909 Rio de Janeiro, RJ Brazil
| | - Viridiana Santana Ferreira-Leitão
- />National Institute of Technology - Ministry of Science, Technology and Innovation, Biocatalysis Laboratory, 20081-312 Rio de Janeiro, RJ Brazil
- />Federal University of Rio de Janeiro, Institute of Chemistry, Department of Biochemistry, Enzyme Technology Laboratory, 21941-909 Rio de Janeiro, RJ Brazil
| | - Elba Pinto da Silva Bon
- />Federal University of Rio de Janeiro, Institute of Chemistry, Department of Biochemistry, Enzyme Technology Laboratory, 21941-909 Rio de Janeiro, RJ Brazil
| |
Collapse
|
20
|
Native Cellulose: Structure, Characterization and Thermal Properties. MATERIALS 2014; 7:6105-6119. [PMID: 28788179 PMCID: PMC5456159 DOI: 10.3390/ma7096105] [Citation(s) in RCA: 279] [Impact Index Per Article: 27.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Revised: 07/25/2014] [Accepted: 08/12/2014] [Indexed: 11/23/2022]
Abstract
In this work, the relationship between cellulose crystallinity, the influence of extractive content on lignocellulosic fiber degradation, the correlation between chemical composition and the physical properties of ten types of natural fibers were investigated by FTIR spectroscopy, X-ray diffraction and thermogravimetry techniques. The results showed that higher extractive contents associated with lower crystallinity and lower cellulose crystallite size can accelerate the degradation process and reduce the thermal stability of the lignocellulosic fibers studied. On the other hand, the thermal decomposition of natural fibers is shifted to higher temperatures with increasing the cellulose crystallinity and crystallite size. These results indicated that the cellulose crystallite size affects the thermal degradation temperature of natural fibers. This study showed that through the methods used, previous information about the structure and properties of lignocellulosic fibers can be obtained before use in composite formulations.
Collapse
|
21
|
Opitz B, Prediger A, Lüder C, Eckstein M, Hilterhaus L, Lindner P, Beutel S, Scheper T, Liese A. In Situ Microscopy for In-line Monitoring of the Enzymatic Hydrolysis of Cellulose. Anal Chem 2013; 85:8121-6. [DOI: 10.1021/ac4008495] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Britta Opitz
- Institute of Technical Biocatalysis, Hamburg University of Technology, Denickestrasse 15,
21073 Hamburg, Germany
| | - Andreas Prediger
- Institute
of Technical Chemistry, Gottfried Wilhelm Leibniz University Hanover, Callinstrasse
5, 30167 Hanover, Germany
| | - Christian Lüder
- Institute
of Technical Chemistry, Gottfried Wilhelm Leibniz University Hanover, Callinstrasse
5, 30167 Hanover, Germany
| | - Marrit Eckstein
- Evonik Industries AG, Goldschmidtstraße 100, 45127 Essen, Germany
| | - Lutz Hilterhaus
- Institute of Technical Biocatalysis, Hamburg University of Technology, Denickestrasse 15,
21073 Hamburg, Germany
| | - Patrick Lindner
- Institute
of Technical Chemistry, Gottfried Wilhelm Leibniz University Hanover, Callinstrasse
5, 30167 Hanover, Germany
| | - Sascha Beutel
- Institute
of Technical Chemistry, Gottfried Wilhelm Leibniz University Hanover, Callinstrasse
5, 30167 Hanover, Germany
| | - Thomas Scheper
- Institute
of Technical Chemistry, Gottfried Wilhelm Leibniz University Hanover, Callinstrasse
5, 30167 Hanover, Germany
| | - Andreas Liese
- Institute of Technical Biocatalysis, Hamburg University of Technology, Denickestrasse 15,
21073 Hamburg, Germany
| |
Collapse
|
22
|
Široká B, Manian AP, Noisternig MF, Henniges U, Kostic M, Potthast A, Griesser UJ, Bechtold T. Wash-dry cycle induced changes in low-ordered parts of regenerated cellulosic fibers. J Appl Polym Sci 2012. [DOI: 10.1002/app.36894] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
23
|
Poletto M, Zattera AJ, Santana RMC. Structural differences between wood species: Evidence from chemical composition, FTIR spectroscopy, and thermogravimetric analysis. J Appl Polym Sci 2012. [DOI: 10.1002/app.36991] [Citation(s) in RCA: 170] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
24
|
Sills DL, Gossett JM. Using FTIR to predict saccharification from enzymatic hydrolysis of alkali-pretreated biomasses. Biotechnol Bioeng 2011; 109:353-62. [PMID: 21898366 DOI: 10.1002/bit.23314] [Citation(s) in RCA: 126] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2011] [Revised: 08/09/2011] [Accepted: 08/17/2011] [Indexed: 11/10/2022]
Abstract
Fourier transform infrared, attenuated total reflectance (FTIR-ATR) spectroscopy combined with partial least squares (PLS) regression accurately predicted 72-h glucose and xylose conversions (g sugars/100 g potential sugars) and yields (g sugars/100 g dry solids) from cellulase-mediated hydrolysis of alkali-pretreated lignocellulose. Six plant biomasses that represent a variety of potential biofuel feedstocks--two switchgrass cultivars, big bluestem grass, a low-impact, high-diversity mixture of 32 species of prairie biomasses, mixed hardwood, and corn stover--were subjected to four levels of low-temperature NaOH pretreatment to produce 24 samples with a wide range of potential digestibility. PLS models were constructed by correlating FTIR spectra of pretreated samples to measured values of gluose and xylose conversions and yields. Variable selection, based on 90% confidence intervals of regression-coefficient matrices, improved the predictive ability of the models, while simplifying them considerably. Final models predicted sugar conversions with coefficient of determination for cross-validation (Q(2)) values of 0.90 for glucose and 0.89 for xylose, and sugar yields with Q(2) values of 0.92 for glucose and 0.91 for xylose. The sugar-yield models are noteworthy for their ability to predict enzymatic saccharification per mass dry solids without a priori knowledge of the composition of the solids. All peaks retained in the final regression coefficient matrices were previously assigned to chemical bonds and functional groups in lignocellulose, demonstrating that the models were based on real chemical information. This study demonstrates that FTIR spectroscopy combined with PLS regression can be used to rapidly estimate sugar conversions and yields from enzymatic hydrolysis of pretreated plant biomass.
Collapse
Affiliation(s)
- Deborah L Sills
- School of Civil and Environmental Engineering, Cornell University, 220 Hollister Hall, Ithaca, New York 14853, USA.
| | | |
Collapse
|