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Journal articles on the topic 'Hemicellulose. Extraction (Chemistry)'

Author: Grafiati

Published: 4 June 2021

Last updated: 15 February 2022

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1

RUNGE, TROY, and CHUNHUI ZHANG. "Hemicellulose extraction and its effect on pulping and bleaching." October 2013 12, no. 10 (2013): 45–52. http://dx.doi.org/10.32964/tj12.10.45.

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A potential biorefinery is envisioned to use the hemicellulose portion of biomass to create transportation fuels or chemicals and the cellulose portion for fiber to be used in papermaking. To understand the effect on hemicellulose removal to pulpability and bleachability, a liquid hot water extraction was performed on two types of biomass with high hemicellulose content: poplar and miscanthus. The resulting materials were pulped using either a soda anthraquinone or kraft process. The pulps were then oxygen delignified and bleached with an elemental chlorine free sequence. The results demonstra

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2

MATEOS-ESPEJEL, ENRIQUE, THEODORE RADIOTIS, and NACEUR JEMAA. "Implications of converting a kraft pulp mill to a dissolving pulp operation with a hemicellulose extraction stage." TAPPI Journal 12, no. 2 (2013): 29–38. http://dx.doi.org/10.32964/tj12.2.29.

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Global demand for dissolving pulp has been increasing at a remarkable pace over the last few years. A shortage in cotton and the expansion of the textile, hygiene, and health product markets are behind this booming demand. The Canadian pulp and paper industry has entered these markets by converting several paper-grade pulp mills to dissolving pulp producers. In the kraft process, part of the hemicellulose remains with the pulp after cooking and the rest is burnt in the recovery boiler to produce energy. In dissolving pulp mills, most of the hemicellulose must be removed from the wood chips in

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3

Ding, Jinhua, Chang Geun Yoo, Yunqiao Pu, et al. "Cellulolytic enzyme-aided extraction of hemicellulose from switchgrass and its characteristics." Green Chemistry 21, no. 14 (2019): 3902–10. http://dx.doi.org/10.1039/c9gc00252a.

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4

LUO, JIE, JOSEPH M. GENCO, and HAIXUAN ZOU. "Extraction of hardwood biomass using dilute alkali." June 2012 11, no. 6 (2012): 19–27. http://dx.doi.org/10.32964/tj11.6.19.

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Near neutral hemicellulose extraction involves extracting wood hemicellulose using green liquor before conventional kraft pulping. The objective of this work was to develop correlations that could be used in process design and economic studies. Experimental data are presented for the extraction of northeast hardwood chips using green liquor. The effect of green liquor application rate, liquor-to-wood ratio, and H-factor on the removal of sugars and organic acids is discussed. Response variables include wood yield, total and soluble lignin, component sugars, acetic acid, lactic acid, formic aci

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Martínez-Abad, Antonio, Nicola Giummarella, Martin Lawoko, and Francisco Vilaplana. "Differences in extractability under subcritical water reveal interconnected hemicellulose and lignin recalcitrance in birch hardwoods." Green Chemistry 20, no. 11 (2018): 2534–46. http://dx.doi.org/10.1039/c8gc00385h.

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6

Santos, Tamara M., M. Virginia Alonso, Mercedes Oliet, Juan C. Domínguez, Victoria Rigual, and Francisco Rodriguez. "Effect of autohydrolysis on Pinus radiata wood for hemicellulose extraction." Carbohydrate Polymers 194 (August 2018): 285–93. http://dx.doi.org/10.1016/j.carbpol.2018.04.010.

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7

GHEZZAZ, HAKIM, LUC PELLETIER, and PAUL R. STUART. "Biorefinery implementation for recovery debottlenecking at existing pulp mills- Part II: Techno-economic evaluation." August 2012 11, no. 8 (2012): 17–24. http://dx.doi.org/10.32964/tj11.8.17.

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The evaluation and process risk assessment of (a) lignin precipitation from black liquor, and (b) the near-neutral hemicellulose pre-extraction for recovery boiler debottlenecking in an existing pulp mill is presented in Part I of this paper, which was published in the July 2012 issue of TAPPI Journal. In Part II, the economic assessment of the two biorefinery process options is presented and interpreted. A mill process model was developed using WinGEMS software and used for calculating the mass and energy balances. Investment costs, operating costs, and profitability of the two biorefinery op

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8

Vena, P. F., M. P. García-Aparicio, M. Brienzo, J. F. Görgens, and T. Rypstra. "Effect of Alkaline Hemicellulose Extraction on Kraft Pulp Fibers fromEucalyptus Grandis." Journal of Wood Chemistry and Technology 33, no. 3 (2013): 157–73. http://dx.doi.org/10.1080/02773813.2013.773040.

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9

Alam, Sultan, Noor Rehman, Inamullah Mian, and Hidayat Ullah. "What We Really Know About Biosynthesis of Cellulose from Ficus palmate: A Novel Biomass Production." Zeitschrift für Physikalische Chemie 234, no. 2 (2020): 313–21. http://dx.doi.org/10.1515/zpch-2019-1378.

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AbstractCurrent research attention has been motivated on the successful synthesis of cellulose from biomass waste of Ficus palmate through multistep process i.e. bleaching and alkali treatment to efficiently eradicate impurities, waxy substances like pectin, cutin, waxes, extractives, hemicellulose and lignin from F. palmate. The cellulose obtained was analyzed by using Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD), Thermogravimetric Analysis (TGA) and Scanning Electron Microscopy (SEM). The isolated cellulose has high degree of purity and crystallinity (61%) and ther

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10

Huang, Fang, and Arthur Ragauskas. "Extraction of Hemicellulose from Loblolly Pine Woodchips and Subsequent Kraft Pulping." Industrial & Engineering Chemistry Research 52, no. 4 (2013): 1743–49. http://dx.doi.org/10.1021/ie302242h.

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11

Jung, Hyun Jin, and Kyeong Keun Oh. "Production of Bio-Based Chemicals, Acetic Acid and Furfural, through Low-Acid Hydrothermal Fractionation of Pine Wood (Pinus densiflora) and Combustion Characteristics of the Residual Solid Fuel." Applied Sciences 11, no. 16 (2021): 7435. http://dx.doi.org/10.3390/app11167435.

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Low-acid hydrothermal (LAH) fractionation conditions were optimized for the effective degradation of hemicellulose from pine wood (Pinus densiflora). The hemicellulosic sugar yield was maximized at 82.5% when the pine wood was fractionated at 190 °C, with 0.5 wt.% of sulfuric acid, and for 10 min. Consecutively, acidified heat treatment with zinc chloride and solvent extraction with ethyl acetate were carried out for the recovery of bio-based platform chemicals, such as furfural and acetic acid, from liquid hydrolysate through liquid–liquid extraction (LLE). Overall, 61.5% of xylose was decomp

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12

Li, Rui, Guihua Yang, Jiachuan Chen, and Ming He. "The Characterization of Hemicellulose Extract from Corn Stalk with Stepwise Alkali Extraction." Journal of Korea Technical Association of the Pulp and Paper Industry 49, no. 4 (2017): 29–40. http://dx.doi.org/10.7584/jktappi.2017.08.49.4.29.

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13

Rissanen, Jussi V., Henrik Grénman, Stefan Willför, Dmitry Yu Murzin, and Tapio Salmi. "Spruce Hemicellulose for Chemicals Using Aqueous Extraction: Kinetics, Mass Transfer, and Modeling." Industrial & Engineering Chemistry Research 53, no. 15 (2014): 6341–50. http://dx.doi.org/10.1021/ie500234t.

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14

Li, Ke, Shuying Li, Di Wang, et al. "Extraction, Characterization, Antitumor and Immunological Activities of Hemicellulose Polysaccharide from Astragalus radix Herb Residue." Molecules 24, no. 20 (2019): 3644. http://dx.doi.org/10.3390/molecules24203644.

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Astragalus radix (radix) have been frequently used for clinical application in China, and the herb residues of radix turn out to be a waste of resources. To escape from this, the medicine value of radix herb residues is mined in this article. We isolated hemicellulose polysaccharide AX-I-3b from radix herb residues by fractional extraction. Monosaccharide-composition analysis revealed that AX-I-3b consisted of arabinose, xylose, and glucose with a molar ratio of 10.4:79.3:1.1. Methylation, NMR and FT-IR analyses showed that AX-I-3b monosaccharide residue was linked as follows: →2,3,4)-β-d-Xylp

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15

HUANG, FANG, and ARTHUR RAGAUSKAS. "Integration of hemicellulose pre-extraction in the bleach-grade pulp production process." October 2013 12, no. 10 (2013): 55–61. http://dx.doi.org/10.32964/tj12.10.55.

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Loblolly pine woodchips were first pre-extracted with 6 wt% (percent on original nonextracted o.d. wood weight) sodium hydroxide at room temperature overnight, then treated at 90°C for 90 min, following another 4 h extraction with the addition of 5 wt% boric acid to partially remove hemicellulose. During the subsequent bleach-grade kraft pulping process, the cooking intensity was alleviated, either by decreasing the cooking time (reduced H-factor by 35%) or decreasing the chemical charge by 30%, with the objective of obtaining similar pulp quality as the control cook. After elemental chlorine

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16

González, J., J. M. Cruz, H. Domı́nguez, and J. C. Parajó. "Production of antioxidants from Eucalyptus globulus wood by solvent extraction of hemicellulose hydrolysates." Food Chemistry 84, no. 2 (2004): 243–51. http://dx.doi.org/10.1016/s0308-8146(03)00208-5.

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17

John Griffin, Gregory, and Li Shu. "Solvent extraction and purification of sugars from hemicellulose hydrolysates using boronic acid carriers." Journal of Chemical Technology & Biotechnology 79, no. 5 (2004): 505–11. http://dx.doi.org/10.1002/jctb.1013.

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18

Marinova, Mariya, Enrique Mateos-Espejel, Naceur Jemaa, and Jean Paris. "Addressing the increased energy demand of a Kraft mill biorefinery: The hemicellulose extraction case." Chemical Engineering Research and Design 87, no. 9 (2009): 1269–75. http://dx.doi.org/10.1016/j.cherd.2009.04.017.

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19

YOON, SUNG-HOON, HARRY CULLINAN, and GOPAL A. KRISHNAGOPALAN. "Polysulfide-borohydride modification of southern pine alkaline pulping integrated with hydrothermal pre-extraction of hemicelluloses." July 2011 10, no. 7 (2011): 9–16. http://dx.doi.org/10.32964/tj10.7.9.

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We studied three process modifications to investigate their effects on the property and yield recovery capabilities of kraft pulping integrated with hemicellulose pre-extraction of southern pine. Loblolly pine chips were pre-extracted with hot water until the sugar extraction yield reached the targeted value of 10% and then subjected to conventional and modified kraft pulping. Modification included polysulfide pretreatment; polysulfide-sodium borohydride dual pretreatment, and polysulfide followed by polysulfide-sodium borohydride dual pretreatment two-stage pretreatments prior to kraft pulpin

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20

Lawther, J. Mark, Runcang Sun, and W. B. Banks. "Effects of extraction conditions and alkali type on yield and composition of wheat straw hemicellulose." Journal of Applied Polymer Science 60, no. 11 (1996): 1827–37. http://dx.doi.org/10.1002/(sici)1097-4628(19960613)60:11<1827::aid-app6>3.0.co;2-n.

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21

Tunc, M. Sefik, and Adriaan R. P. van Heiningen. "Hemicellulose Extraction of Mixed Southern Hardwood with Water at 150 °C: Effect of Time." Industrial & Engineering Chemistry Research 47, no. 18 (2008): 7031–37. http://dx.doi.org/10.1021/ie8007105.

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22

Chadni, Morad, Nabil Grimi, Olivier Bals, Isabelle Ziegler-Devin, Stéphane Desobry, and Nicolas Brosse. "Elaboration of hemicellulose-based films: Impact of the extraction process from spruce wood on the film properties." Carbohydrate Research 497 (November 2020): 108111. http://dx.doi.org/10.1016/j.carres.2020.108111.

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23

Azum, Naved, Mohammad Jawaid, Lau Kia Kian, Anish Khan, and Maha Moteb Alotaibi. "Extraction of Microcrystalline Cellulose from Washingtonia Fibre and Its Characterization." Polymers 13, no. 18 (2021): 3030. http://dx.doi.org/10.3390/polym13183030.

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Washingtonia is a desert plant with great sustainability and renewability in nature and is abundantly cultivated across global urban regions. Its fibre biomass comprises cellulose as the major structural part, and this is why it can be potentially utilized as an alternative biomaterial for manufacturing microcrystalline cellulose (MCC) products that can be widely applied in industrial fields. In the present study, NaOH-treated Washingtonia fibre (WAKL), NaClO2-treated Washingtonia fibre (WBLH), and Washingtonia microcrystalline cellulose (WMCC) were extracted through combined treatments of alk

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24

GHEZZAZ, HAKIM, LUC PELLETIER, and PAUL R. STUART. "Biorefinery implementation for recovery debottlenecking at existing pulp mills - Part I: Potential for debottlenecking." July 2012 11, no. 7 (2012): 17–25. http://dx.doi.org/10.32964/tj11.7.17.

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Depending on the process strategy employed, implementation of the biorefinery into an existing pulp and paper mill can often help with process debottlenecking, and enable increased pulp and paper production capacity. Many biorefinery process options also offer the opportunity for bioproducts manufacturing and/or fossil fuel replacement. In this paper, the implementation of two biorefinery processes is examined from the perspective of process debottlenecking at a sodium carbonate-based semichemical pulp and paper mill: (a) lignin precipitation from black liquor by acidification with CO2, and (b

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25

CHEN, CHENGCONG, RAIMO ALÉN, JONI LEHTO, and HANNU PAKKANEN. "Combustion behavior of kraft black liquor droplets from hot water pretreated hardwood and softwood chips." November 2016 15, no. 11 (2016): 685–91. http://dx.doi.org/10.32964/tj15.11.685.

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This paper describes the combustion behavior of birch and spruce kraft black liquors obtained from an integrated forest biorefinery concept in which a hot water extraction of chips was performed before pulping. This pretreatment, aiming mainly at the recovery of various hemicellulose-derived materials, increased the concentrations of lignin and hydroxy acids in black liquors, compared with those in the reference black liquors without any process modification. On the other hand, the pretreatment decreased the concentrations of volatile acids and other organics (extractives and hemicellulose res

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26

Hayat, Asghar. "Paper Waste Management: Extraction of Fermentable Sugar from Lignocellulosic Waste Paper." Pakistan Journal of Analytical & Environmental Chemistry 22, no. 1 (2021): 180–89. http://dx.doi.org/10.21743/pjaec/2021.06.19.

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The utilization of paper on a commercial scale is increasing day by day throughout the world that produces million of tons of paper waste yearly and burdened for landfills. The present study focuses on the exploitation of waste papers (office paper, newspaper and tissue paper) as a cheapest alternative source of energy to extract fermentable sugar by applying chemical and enzymatic pretreatments. The quantification of released sugar was analyzed by spectrophotometer and high performance liquid chromatography refractive index (HPLC-RI) detector. Cellulose (12 FPU/g) and β-glucosidase (12 FPU/g)

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27

Hazrati, K. Z., S. M. Sapuan, M. Y. M. Zuhri, and R. Jumaidin. "Extraction and Characterization of Potential Biodegradable Materials Based on Dioscorea hispida Tubers." Polymers 13, no. 4 (2021): 584. http://dx.doi.org/10.3390/polym13040584.

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This study was driven by the stringent environmental legislation concerning the consumption and utilization of eco-friendly materials. Within this context, this paper aimed to examine the characteristics of starch and fibres from the Dioscorea hispida tuber plant to explore their potential as renewable materials. The extraction of the Dioscorea hispida starch and Dioscorea hispida fibres was carried out and the chemical composition, physical, thermal, morphological properties, and crystallinity were studied. The chemical composition investigations revealed that the Dioscorea hispida starch (DH

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28

Arkell, A., H. Krawczyk, J. Thuvander, and A. S. Jönsson. "Evaluation of membrane performance and cost estimates during recovery of sodium hydroxide in a hemicellulose extraction process by nanofiltration." Separation and Purification Technology 118 (October 2013): 387–93. http://dx.doi.org/10.1016/j.seppur.2013.07.015.

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29

Jiang, Yetao, Xiaoyu Wang, Zhen Wu, Jiaxing Xu, Lei Hu, and Lu Lin. "Integration of hemicellulose pre-extraction and solid alkali-oxygen cooking processes for lignocellulose fractionation with emphasis on xylan valorization." Korean Journal of Chemical Engineering 38, no. 4 (2021): 788–96. http://dx.doi.org/10.1007/s11814-020-0720-1.

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30

Mandlika, Anurag, and Troy Runge. "Addition of corn stover arabinoxylan into hardwood during pulping for improved physical properties." September 2017 16, no. 09 (2017): 495–504. http://dx.doi.org/10.32964/tj16.9.495.

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Agricultural residues, such as corn stover, are being considered for biofuels and bioproducts. They represent inexpensive, pentosan-rich feedstock that are available in abundance. These materials are typically pretreated to make them more amenable to biological processes such as fermentation. One such treatment involves extraction using alkali to remove the hemicellulose, leaving the cellulose more accessible for chemical or enzymatic hydrolysis. Extracted xylan hemicellulose may be considered for use in pulp and paper, or for providing a potential value stream from cellulosic ethanol biorefin

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31

CORREIA, THIAGO R., JESSICA PALOMA A. BARROS, CAIO C. SANTOS, et al. "CHARACTERIZATION OF SPONGE-GOURD RESIDUE PRETREATED BY MECHANICAL DISC REFINING." Cellulose Chemistry and Technology 55, no. 1-2 (2021): 149–57. http://dx.doi.org/10.35812/cellulosechemtechnol.2021.55.16.

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The present works describes the effect produced by mechanical disc refining in the pretreatment of lignocellulose agro-industrial waste, using scraps of sponge gourd. Two batches of sponge gourd scraps were refined in a laboratory disc refiner, at a consistence of 2.9 wt% (fiber/water) and residence time of 2 and 4 min. The two batches were then coded as MRS and HRS, respectively. MRS and HRS samples, as well as non-refined sponge gourd (NRS), were characterized in terms of morphological aspects, structural characteristics and thermal behavior. The analysis of SEM micrographs revealed that int

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32

Hamaguchi, Marcelo, Jesse Kautto, and Esa Vakkilainen. "Effects of hemicellulose extraction on the kraft pulp mill operation and energy use: Review and case study with lignin removal." Chemical Engineering Research and Design 91, no. 7 (2013): 1284–91. http://dx.doi.org/10.1016/j.cherd.2013.02.006.

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33

Nascimento, Rosa E. A., Joana Monte, Mafalda Cadima, Vítor D. Alves, and Luísa A. Neves. "Rendering Banana Plant Residues into a Potentially Commercial Byproduct by Doping Cellulose Films with Phenolic Compounds." Polymers 13, no. 5 (2021): 843. http://dx.doi.org/10.3390/polym13050843.

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This study seeks to render residues from banana plants into a useful byproduct with possible applications in wound dressings and food packaging. Films based on cellulose extracted from banana plant pseudostem and doped with phenolic compounds extracted from banana plant leaves were developed. The phenolic compounds were extracted using batch solid-liquid and Soxhlet methods, with different drying temperatures and periods of time. The total phenolic content and antioxidant activity were quantified. The optimum values were obtained using a three-day period batch-solid extraction at 40 °C (791.74

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34

Jakob, Ana, Miha Grilc, Janvit Teržan, and Blaž Likozar. "Solubility Temperature Dependence of Bio-Based Levulinic Acid, Furfural, and Hydroxymethylfurfural in Water, Nonpolar, Polar Aprotic and Protic Solvents." Processes 9, no. 6 (2021): 924. http://dx.doi.org/10.3390/pr9060924.

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Bio-based levulinic acid (LA), furfural (FF), and hydroxymethylfurfural (HMF) represent key chemical intermediates when biorefining biomass resources, i.e., either cellulose, glucose, hexoses, etc. (HMF/LA), or hemicellulose, xylose, and pentose (FF). Despite their importance, their online in situ detection by process analytical technologies (PATs), solubility, and its temperature dependence are seldom available. Herein, we report their solubility and temperature dependence by examining n-hexane, cyclohexane, benzene, toluene, 1,4-dioxane, diethyl ether, dichloromethane, tetrahydrofuran, ethyl

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35

Mehanny, Sherif, Ehab E. Abu-El Magd, Simona Sorbara, Jorge Navarro, and Rodrigo Gil-San-Millan. "Spanish Poplar Biomass as a Precursor for Nanocellulose Extraction." Applied Sciences 11, no. 15 (2021): 6863. http://dx.doi.org/10.3390/app11156863.

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The effect of acidic hydrolysis duration on nanocellulose size, morphology, and proper ties was investigated, which opens up a whole new horizon of versatility in poplar applications. This study aimed to examine Spanish poplar wastes as raw material to extract crystalline nanocellulose (CNC), which substantiates the importance of poplar wastes. Wastes were pulped using 1 L of 10% NaOH (wt./wt.) solution, and bleached several times by NaClO2; afterwards, white wastes were subjected to acidic hydrolysis by 60% H2SO4 for either 5, 10, or 15 min. Microcrystalline cellulose (MCC) underwent a simila

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36

Zannini, Domenico, Giovanni Dal Poggetto, Mario Malinconico, Gabriella Santagata, and Barbara Immirzi. "Citrus Pomace Biomass as a Source of Pectin and Lignocellulose Fibers: From Waste to Upgraded Biocomposites for Mulching Applications." Polymers 13, no. 8 (2021): 1280. http://dx.doi.org/10.3390/polym13081280.

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Citrus pomace derived from the industrial processing of juice and essential oils mostly consists of pectin, cellulose, hemicellulose, and simple sugars. In this work, citrus pomace waste from an agricultural company in South Italy was used as source of pectin. The extraction conditions of the polysaccharide were optimized using a suitable combination of time and a concentration of a mild organic solvent, such as acetic acid; thus recovering high Mw pectin and bioactive molecules (flavonoids and polyphenols). The pectin was structurally (GPC, FTIR), morphologically (SEM), thermally (TGA/DTG), a

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37

M. RUNGE, TROY, and SCOTT PAUL. "Desilication of bamboo for pulp production." November 2015 14, no. 11 (2015): 743–49. http://dx.doi.org/10.32964/tj14.11.743.

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Bamboo is one of the world’s fastest growing feedstocks. It is a promising nonwood resource that can be used in the pulp and paper industry. Among more than 1200 species of bamboo, the timber varieties can be processed much like trees, allowing current pulp mill logistical systems to be used. Bamboo can be difficult to pulp because of its high silica content, which creates issues for black liquor recovery. This study compares two methods of reducing the silica content of a common species of timber bamboo. Specifically, the dermis layer of Moso bamboo (Phyllostachys edulis) was removed through

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38

ORLOV, Denis V., Igor O. LOMOVSKIY, and Oleg I. LOMOVSKIY. "QUERCETIN STABILITY UNDER MECHANICAL STRESS IN THE PRESENCE OF PLANT-BASED POLYMERS." Periódico Tchê Química 14, no. 27 (2017): 83–90. http://dx.doi.org/10.52571/ptq.v14.n27.2017.83_periodico27_pgs_83_89.pdf.

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In this paper, we consider mechanical stress resistance of quercetin -3,3',4',5,7-pentahydroxyflavone in pure substance, in a mixture of crystalline solid quercetin with plant based polymers, and adsorbed on plant based polymers. The plant based polymers were produced by step-by-step chemical removal of components of plant material. The most stable to machine treatment is the quercetin adsorbed on cellulose polymer components, which retain the texture of the original plant tissue. The capability to increase quercetin stability in the process of mechanical treatment changes from hemicellulose v

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39

He, Liang, Dong Chen, Shibo Yang, et al. "Deep Insights into the Atmospheric Sodium Hydroxide–Hydrogen Peroxide Extraction Process of Hemicellulose in Bagasse Pith: Technical Uncertainty, Dissolution Kinetics Behavior, and Mechanism." Industrial & Engineering Chemistry Research 59, no. 21 (2020): 10150–59. http://dx.doi.org/10.1021/acs.iecr.0c01076.

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40

Sánchez-Borrego, Francisco José, Paloma Álvarez-Mateos, and Juan F. García-Martín. "Biodiesel and Other Value-Added Products from Bio-Oil Obtained from Agrifood Waste." Processes 9, no. 5 (2021): 797. http://dx.doi.org/10.3390/pr9050797.

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Bio-oil is a promising source of chemicals and renewable fuels. As the liquid phase obtained from the pyrolysis of biomass, the composition and amount of bio-oil generated depend not only on the type of the biomass but also on the conditions under which pyrolysis is performed. Most fossil fuels can be replaced by bio-oil-derived products. Thus, bio-oil can be used directly or co-fed along with fossil fuels in boilers, transformed into fuel for car engines by hydrodeoxygenation or even used as a more suitable source for H2 production than biomass. On the other hand, due to its rich composition

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41

Mottaghitalab, Vahid, and Mona Farjad. "Electrospun cellulosic structure nanofibre based on rice straw." Journal of Polymer Engineering 33, no. 9 (2013): 857–73. http://dx.doi.org/10.1515/polyeng-2013-0081.

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Abstract The present investigation compares the diverse methods of cellulose extraction from rice straw. Furthermore, the purified cellulosic material was utilized for the electrospinning of cellulose nanofibers. Based on the differential scanning calorimeter and Fourier transform infrared spectroscopy analyses, the new protocol was compared to the other methods showing lower amorphous structure and also lower lignin and hemicellulose in crystalline α-cellulose structure. The protocol, which included ultrasonic mechanical treatment, showed a higher crystallinity of the corresponding cellulose

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42

Ghimire, Nirmal, Rune Bakke, and Wenche Hennie Bergland. "Mesophilic Anaerobic Digestion of Hydrothermally Pretreated Lignocellulosic Biomass (Norway Spruce (Picea abies))." Processes 9, no. 2 (2021): 190. http://dx.doi.org/10.3390/pr9020190.

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Hot water extraction (HWE) removes hemicellulose from woody biomass to give improved end products while producing a sugar-rich by-product stream, which requires proper treatment before disposal. Hot water extracted Norway spruce (Picea abies) at two different pretreatment conditions (140 °C for 300 min (H140) and 170 °C for 90 min (H170)) generated hydrolysate as a by-product, which was used in mesophilic anaerobic digestion (AD) as substrate. H140 gave a higher methane yield (210 NmL/g COD—chemical oxygen demand) than H170 (148 NmL/g COD) despite having a lower concentration of sugars, sugges

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Campos, Débora A., Tânia B. Ribeiro, José A. Teixeira, Lorenzo Pastrana, and Maria Manuela Pintado. "Integral Valorization of Pineapple (Ananas comosus L.) By-Products through a Green Chemistry Approach towards Added Value Ingredients." Foods 9, no. 1 (2020): 60. http://dx.doi.org/10.3390/foods9010060.

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Industrial by-products are produced every day through fruit processing industries. Pineapple is not an exception; when processed, around 60% (w/w) of its weight are peels, stem, trimmings, and crown, the only used fruit part for human consumption. Due to high concerns of sustainability in the food system and negative high impact of human practice in the environment, a strategy has to be developed. Therefore, a green chemistry approach was applied to pineapple by-products to make an integrated valorization by the extraction of bioactive molecules. Two pineapple by-products (peels and stems) wer

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Ghavidel, Amir, Jana Gelbrich, Aldi Kuqo, Viorica Vasilache, and Ion Sandu. "Investigation of Archaeological European White Elm (Ulmus laevis) for Identifying and Characterizing the Kind of Biological Degradation." Heritage 3, no. 4 (2020): 1083–93. http://dx.doi.org/10.3390/heritage3040060.

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The current work aims at the study of the biological degradation of archaeological European white elm via microscopy and chemical analysis in order to identify the kind of biological degradation and characterize the state of preservation of this type of wood. Profound knowledge of the chemical constituents and biological degradation in fresh-cut and archaeological elm wood will simplify the process of restoration and conservation of the investigated artifacts. Therefore, fresh-cut and archaeological elm were compared in terms of extractive, chlorite holocellulose, α-cellulose, lignin, and ash

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Vincent, Pauline, Frédérique Ham-Pichavant, Christelle Michaud, et al. "Extraction and Characterization of Hemicelluloses from a Softwood Acid Sulfite Pulp." Polymers 13, no. 13 (2021): 2044. http://dx.doi.org/10.3390/polym13132044.

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Hemicelluloses were extracted from a softwood acid sulfite pulp in a three-step procedure. Further delignification step resulted in a holocellulose pulp containing only 1.7 wt.% of the lignin left. Cold caustic extraction (CCE) with 18 wt.% NaOH at 60 °C for 1 h was performed to solubilize hemicelluloses of the holocellulose. An unbleached cellulose pulp was then obtained 97% pure, which indicates that 89% of the hemicelluloses were removed. After purification, extraction yields between 1.1 wt.% and 9.5 wt.% were obtained from the delignified pulp and the hemicelluloses’ chemical compositions

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Liu, Wei, Zhirun Yuan, Changbin Mao, Qingxi Hou, and Kecheng Li. "Extracting hemicelluloses prior to aspen chemi-thermomechanical pulping: Effects of pre-extraction on pulp properties." Carbohydrate Polymers 87, no. 1 (2012): 322–27. http://dx.doi.org/10.1016/j.carbpol.2011.07.050.

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Sun, Xiao-Feng, Paul Fowler, Mohanathas Rajaratnam, and Guangcheng Zhang. "Extraction and characterisation of hemicelluloses from maize stem." Phytochemical Analysis 21, no. 5 (2010): 406–15. http://dx.doi.org/10.1002/pca.1211.

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Wallberg, Ola, Marie Linde, and Ann-Sofi Jönsson. "Extraction of lignin and hemicelluloses from kraft black liquor." Desalination 199, no. 1-3 (2006): 413–14. http://dx.doi.org/10.1016/j.desal.2006.03.094.

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Lawther, J. M., R. C. Sun, and W. B. Banks. "Fractional Extraction and Structural Characterization of Hemicelluloses from Wheat Straw." International Journal of Polymeric Materials 36, no. 1-2 (1997): 53–64. http://dx.doi.org/10.1080/00914039708044137.

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Chadni, Morad, Olivier Bals, Isabelle Ziegler-Devin, Nicolas Brosse, and Nabil Grimi. "Microwave-assisted extraction of high-molecular-weight hemicelluloses from spruce wood." Comptes Rendus Chimie 22, no. 8 (2019): 574–84. http://dx.doi.org/10.1016/j.crci.2019.07.002.

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