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Wang H, Li Y, Dai Y, Ma L, Di D, Liu J. Screening, structural characterization and anti-adipogenesis effect of a water-soluble polysaccharide from Lycium barbarum L. by an activity-oriented approach. FOOD BIOSCI 2023. [DOI: 10.1016/j.fbio.2023.102502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
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Analysis of celluloses, plant holocelluloses, and wood pulps by size-exclusion chromatography/multi-angle laser-light scattering. Carbohydr Polym 2021; 251:117045. [PMID: 33142603 DOI: 10.1016/j.carbpol.2020.117045] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 08/07/2020] [Accepted: 08/31/2020] [Indexed: 11/23/2022]
Abstract
Size-exclusion chromatography with multi-angle laser-light scattering and refractive index detection (SEC/MALLS/RI) provides the number- and weight-average molar masses, molar mass distributions, conformations, and linear/branched structures of polymers. In the case of pure celluloses including highly crystalline tunicate and alga celluloses, and hemicellulose-rich plant holocelluloses, soaking in ethylene diamine (EDA) and subsequent solvent exchange to N,N-dimethylacetamide (DMAc) though methanol is effective for complete dissolution in ∼8% (w/w) LiCl/DMAc. SEC/MALLS/RI analysis can, therefore, be applied to pure celluloses, chemical wood pulps, and plant holocelluloses after dissolution in ∼8% (w/w) LiCl/DMAc, dilution to 1% (w/v) LiCl/DMAc and membrane filtration. All pure celluloses and the high-molar-mass cellulose fractions of hardwood and grass holocelluloses have linear and random-coil conformations and various average molar masses and molar mass distributions depending on the cellulose and holocellulose resources. In contrast, Japanese cedar (i.e., softwood) holocellulose and softwood bleached kraft pulp have alkali-stable cellulose/glucomannan branched structures in the high-molar-mass fractions.
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Longanesi L, Bouxin FP, Fan J, Auta H, Gammons R, Abeln F, Budarin VL, Clark JH, Chuck CJ. Scaled-Up Microwave-Assisted Pretreatment and Continuous Fermentation to Produce Yeast Lipids from Brewery Wastes. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c03463] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Luca Longanesi
- Department of Chemical Engineering, University of Bath, Bath BA2 7AY, U.K
| | - Florent P. Bouxin
- Green Chemistry Centre of Excellence, Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K
| | - Jiajun Fan
- Green Chemistry Centre of Excellence, Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K
| | - Hadiza Auta
- Department of Chemical Engineering, University of Bath, Bath BA2 7AY, U.K
| | - Richard Gammons
- Green Chemistry Centre of Excellence, Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K
| | - Felix Abeln
- Department of Chemical Engineering, University of Bath, Bath BA2 7AY, U.K
| | - Vitaliy L. Budarin
- Green Chemistry Centre of Excellence, Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K
| | - James H. Clark
- Green Chemistry Centre of Excellence, Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K
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Enhanced enzymatic hydrolysis of corncob by ultrasound-assisted soaking in aqueous ammonia pretreatment. 3 Biotech 2018. [PMID: 29527453 DOI: 10.1007/s13205-018-1186-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
Abstract
Ultrasound-assisted soaking in aqueous ammonia (USAA) pretreatment with 15 wt% aqueous ammonia under low temperature (~ 60 °C) and short-time (< 12 min) low-frequency (20 kHz, 60-650 W) ultrasound has been investigated for enhancement of enzymatic hydrolysis of corncob. Operational parameters of energy density (2.93-17.07 W/mL) and sonication time (0.34-11.66 min) that affect cellulose recovery, delignification, and sugar recovery yield were studied and optimized. The maximum cellulose recovery, delignification and sugar recovery yield determined at the optimum conditions (energy density 10 W/mL, sonication time 11.66 min) were 83.8, 84.7, and 77.6%, respectively. The corncob pretreated using USAA has a lower hemicellulose content (28.9% vs 31.8%), a slightly lower crystallinity index value (42.7% vs 43.7%), and a larger surface cavity diameter (> 36 μm vs < 20 μm) than that pretreated using soaking in aqueous ammonia (SAA) pretreatment. The USAA pretreatment was proved to be a reliable and effective method for corncob pretreatment.
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Akinosho H, Yee K, Rodriguez M, Muchero W, Yoo CG, Li M, Thompson O, Pu Y, Brown S, Mielenz J, Ragauskas AJ. Lignin Exhibits Recalcitrance‐Associated Features Following the Consolidated Bioprocessing of
Populus trichocarpa
Natural Variants. ChemistrySelect 2017. [DOI: 10.1002/slct.201701572] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Hannah Akinosho
- BioEnergy Science Center Oak Ridge National Laboratory Oak Ridge TN 37831
- Biosciences Division Oak Ridge National Laboratory Oak Ridge TN 37831
- Department of Chemistry and Biochemistry, G eorgia Institute of Technology Atlanta GA 30332
| | - Kelsey Yee
- BioEnergy Science Center Oak Ridge National Laboratory Oak Ridge TN 37831
- Biosciences Division Oak Ridge National Laboratory Oak Ridge TN 37831
| | - Miguel Rodriguez
- BioEnergy Science Center Oak Ridge National Laboratory Oak Ridge TN 37831
- Biosciences Division Oak Ridge National Laboratory Oak Ridge TN 37831
| | - Wellington Muchero
- BioEnergy Science Center Oak Ridge National Laboratory Oak Ridge TN 37831
- Biosciences Division Oak Ridge National Laboratory Oak Ridge TN 37831
| | - Chang Geun Yoo
- Department of Chemical and Biomolecular Engineering & Department of Forestry Center for Renewable Carbon at Wildlife, and Fisheries University of Tennessee Knoxville TN 37996
- BioEnergy Science Center Oak Ridge National Laboratory Oak Ridge TN 37831
- Biosciences Division Oak Ridge National Laboratory Oak Ridge TN 37831
| | - Mi Li
- Department of Chemical and Biomolecular Engineering & Department of Forestry Center for Renewable Carbon at Wildlife, and Fisheries University of Tennessee Knoxville TN 37996
- BioEnergy Science Center Oak Ridge National Laboratory Oak Ridge TN 37831
- Biosciences Division Oak Ridge National Laboratory Oak Ridge TN 37831
| | - Olivia Thompson
- BioEnergy Science Center Oak Ridge National Laboratory Oak Ridge TN 37831
- Biosciences Division Oak Ridge National Laboratory Oak Ridge TN 37831
| | - Yunqiao Pu
- BioEnergy Science Center Oak Ridge National Laboratory Oak Ridge TN 37831
- Biosciences Division Oak Ridge National Laboratory Oak Ridge TN 37831
| | - Steven Brown
- BioEnergy Science Center Oak Ridge National Laboratory Oak Ridge TN 37831
- Biosciences Division Oak Ridge National Laboratory Oak Ridge TN 37831
| | - Johnathan Mielenz
- BioEnergy Science Center Oak Ridge National Laboratory Oak Ridge TN 37831
- Biosciences Division Oak Ridge National Laboratory Oak Ridge TN 37831
| | - Arthur J. Ragauskas
- Department of Chemical and Biomolecular Engineering & Department of Forestry Center for Renewable Carbon at Wildlife, and Fisheries University of Tennessee Knoxville TN 37996
- BioEnergy Science Center Oak Ridge National Laboratory Oak Ridge TN 37831
- Biosciences Division Oak Ridge National Laboratory Oak Ridge TN 37831
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Su R, Yang R, Jifeng Y, Du R, Huang R, Qi W, He Z. Oscillating Cellulase Adsorption and Enhanced Lignocellulose Hydrolysis upon Ultrasound Treatment. ACTA ACUST UNITED AC 2016. [DOI: 10.1007/s12209-016-0019-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Demesa AG, Laari A, Turunen I, Sillanpää M. Alkaline Partial Wet Oxidation of Lignin for the Production of Carboxylic Acids. Chem Eng Technol 2015. [DOI: 10.1002/ceat.201400660] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Zeng H, Miao S, Zheng B, Lin S, Jian Y, Chen S, Zhang Y. Molecular Structural Characteristics of Polysaccharide Fractions fromCanarium album(Lour.) Raeusch and Their Antioxidant Activities. J Food Sci 2015; 80:H2585-96. [DOI: 10.1111/1750-3841.13076] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Accepted: 08/17/2015] [Indexed: 01/04/2023]
Affiliation(s)
- Hongliang Zeng
- College of Food Science; Fujian Agriculture and Forestry Univ; Fuzhou Fujian 350002 P. R. China
| | - Song Miao
- Teagasc Food Research Centre, Moorepark; Fermoy, Co. Cork Ireland
| | - Baodong Zheng
- College of Food Science; Fujian Agriculture and Forestry Univ; Fuzhou Fujian 350002 P. R. China
| | - Shan Lin
- College of Food Science; Fujian Agriculture and Forestry Univ; Fuzhou Fujian 350002 P. R. China
| | - Yeye Jian
- College of Food Science; Fujian Agriculture and Forestry Univ; Fuzhou Fujian 350002 P. R. China
| | - Shen Chen
- College of Food Science; Fujian Agriculture and Forestry Univ; Fuzhou Fujian 350002 P. R. China
| | - Yi Zhang
- College of Food Science; Fujian Agriculture and Forestry Univ; Fuzhou Fujian 350002 P. R. China
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Zhou Y, Chen H, Qi F, Zhao X, Liu D. Non-ionic surfactants do not consistently improve the enzymatic hydrolysis of pure cellulose. BIORESOURCE TECHNOLOGY 2015; 182:136-143. [PMID: 25689307 DOI: 10.1016/j.biortech.2015.01.137] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Revised: 01/27/2015] [Accepted: 01/30/2015] [Indexed: 05/18/2023]
Abstract
Non-ionic surfactants have been frequently reported to improve the enzymatic hydrolysis of pretreated lignocellulosic biomass and pure cellulose. However, how the hydrolysis condition, substrate structure and cellulase formulation affect the beneficial action of surfactants has not been well elucidated. In this work, it was found that the enzymatic hydrolysis of pure cellulose was not consistently improved by surfactants. Contrarily, high surfactant concentration, e.g. 5 g/L, which greatly improved the hydrolysis of dilute acid pretreated substrates, actually showed notable inhibition to pure cellulose conversion in the late phase of hydrolysis. Under an optimal hydrolysis condition, the improvement by surfactant was limited, but under harsh conditions surfactant indeed could enhance cellulose conversion. It was proposed that non-ionic surfactants could interact with substrates and cellulases to impact the adsorption behaviors of cellulases. Therefore, the beneficial action of surfactants on pure cellulose hydrolysis is influenced by hydrolysis condition, cellulose structural features and cellulase formulation.
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Affiliation(s)
- Yan Zhou
- Institute of Applied Chemistry, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Hongmei Chen
- Institute of Applied Chemistry, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Feng Qi
- College of Life Sciences/Engineering Research Center of Industrial Microbiology, Fujian Normal University, Fuzhou 350108, China
| | - Xuebing Zhao
- Institute of Applied Chemistry, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
| | - Dehua Liu
- Institute of Applied Chemistry, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
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Gourlay K, Hu J, Arantes V, Penttilä M, Saddler JN. The use of carbohydrate binding modules (CBMs) to monitor changes in fragmentation and cellulose fiber surface morphology during cellulase- and Swollenin-induced deconstruction of lignocellulosic substrates. J Biol Chem 2014; 290:2938-45. [PMID: 25527502 DOI: 10.1074/jbc.m114.627604] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Although the actions of many of the hydrolytic enzymes involved in cellulose hydrolysis are relatively well understood, the contributions that amorphogenesis-inducing proteins might contribute to cellulose deconstruction are still relatively undefined. Earlier work has shown that disruptive proteins, such as the non-hydrolytic non-oxidative protein Swollenin, can open up and disaggregate the less-ordered regions of lignocellulosic substrates. Within the cellulosic fraction, relatively disordered, amorphous regions known as dislocations are known to occur along the length of the fibers. It was postulated that Swollenin might act synergistically with hydrolytic enzymes to initiate biomass deconstruction within these dislocation regions. Carbohydrate binding modules (CBMs) that preferentially bind to cellulosic substructures were fluorescently labeled. They were imaged, using confocal microscopy, to assess the distribution of crystalline and amorphous cellulose at the fiber surface, as well as to track changes in surface morphology over the course of enzymatic hydrolysis and fiber fragmentation. Swollenin was shown to promote targeted disruption of the cellulosic structure at fiber dislocations.
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Affiliation(s)
- Keith Gourlay
- From the Forest Products Biotechnology/Bioenergy Group, Department of Wood Science, Faculty of Forestry, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada and
| | - Jinguang Hu
- From the Forest Products Biotechnology/Bioenergy Group, Department of Wood Science, Faculty of Forestry, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada and
| | - Valdeir Arantes
- From the Forest Products Biotechnology/Bioenergy Group, Department of Wood Science, Faculty of Forestry, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada and
| | - Merja Penttilä
- the VTT Technical Research Centre of Finland, Metallimiehenkuja 2 (Espoo), FI-02044 VTT, Finland
| | - Jack N Saddler
- From the Forest Products Biotechnology/Bioenergy Group, Department of Wood Science, Faculty of Forestry, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada and
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Guo H, He M, Huang R, Qi W, Guo W, Su R, He Z. Changes in the supramolecular structures of cellulose after hydrolysis studied by terahertz spectroscopy and other methods. RSC Adv 2014. [DOI: 10.1039/c4ra08314h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Cui M, Zhang Y, Huang R, Su R, Qi W, He Z. Enhanced enzymatic hydrolysis of lignocellulose by integrated decrystallization and fed-batch operation. RSC Adv 2014. [DOI: 10.1039/c4ra08891c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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14
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The effect of 1-ethyl-3-methylimidazolium acetate on the enzymatic degradation of cellulose. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcatb.2013.11.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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