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1. Synthesis of renewable C–C cyclic compounds and high-density biofuels using 5-hydromethylfurfural as a reactant

Author:
Cai, Taimei; Deng, Qiang; Peng, Hailong; Zhong, Jin; Gao, Rui; Wang, Jun; Zeng, Zheling; Zou, Ji-Jun; Deng, Shuguang
Source:
Green chemistry 2020 v.22 no.8 pp. 2468-2473
ISSN:
1463-9270
Subject:
hemicellulose,   etc   ; biofuels; green chemistry;     Show all 3 Subjects
Abstract:
... The major challenge in the synthesis of high-density biofuels is to identify the bio-based source for C–C cyclic compounds and C–C coupling reactions with a suitable selectivity. Herein, we selectively synthesize 1,2,4-benzenetriol (BTO) with a yield of 51.4% from cellulose-derived 5-hydromethylfurfural via a ring-rearrangement reaction. The cellulose-derived route is a more meaningful route for t ...
DOI:
10.1039/d0gc00195c

2. Correction to: Modification of hyperbranched hemicellulose polymer and its application in adsorbing acid dyes

Author:
Zhang, Linya; Xue, Wei; Gu, Limin
Source:
Cellulose 2019 v.26 no.12 pp. 7581-7583
ISSN:
0969-0239
Subject:
hemicellulose,   etc   ; cellulose; dyes; polymers;     Show all 4 Subjects
Abstract:
... In the original publication of the article, the graphical abstract and Scheme 1(a) and Scheme 1(b) were published incorrectly. ...
DOI:
10.1007/s10570-019-02604-9

3. Thermal interaction analysis of isolated hemicellulose and cellulose by kinetic parameters during biomass pyrolysis

Author:
Ding, Yanming; Huang, Biqing; Li, Kaiyuan; Du, Wenzhou; Lu, Kaihua; Zhang, Yansong
Source:
Energy 2020 v.195 pp. 117010
ISSN:
0360-5442
Subject:
hemicellulose,   etc   ; activation energy; algorithms; artificial intelligence; biomass; cellulose; pyrolysis; thermogravimetry;     Show all 8 Subjects
Abstract:
... Thermal interactions of isolated hemicellulose and cellulose were analyzed during biomass pyrolysis. Different from the previous researches focus on pyrolysis products, the current study paid attention to the kinetic parameters coupled with artificial intelligence optimization algorithm to explore whether the interactions of hemicellulose and cellulose could be ignored or not. A series of thermogr ...
DOI:
10.1016/j.energy.2020.117010

4. Improving the Understanding of the Bonding Mechanism of Primary Components of Biomass Pellets through the Use of Advanced Analytical Instruments

Author:
Anukam, Anthony Ike; Berghel, Jonas; Famewo, Elizabeth Bosede; Frodeson, Stefan
Source:
Journal of wood chemistry and technology 2020 v.40 no.1 pp. 15-32
ISSN:
1532-2319
Subject:
hemicellulose,   etc   ; adhesion; biomass; cellulose; cohesion; moieties; pellets; surface tension;     Show all 8 Subjects
Abstract:
... Previous studies have attempted to explain forces holding particles together in densified biomass pellets using theories of forces of attraction between solid particles, forces of adhesion and cohesion, solid bridges and mechanical interlocking bonds including interfacial forces and capillary pressure. This study investigated the bonding mechanism of primary biomass components in densified pellets ...
DOI:
10.1080/02773813.2019.1652324

5. Effects of hemicellulose content on TEMPO-mediated selective oxidation, and the properties of films prepared from bleached chemical pulp

Author:
Lin, Changmei; Deng, Qidu; Hu, Yuantao; Huang, Liulian; Ni, Yonghao; Cao, Shilin; Ma, Xiaojuan
Source:
Cellulose 2020 v.27 no.2 pp. 1043-1054
ISSN:
0969-0239
Subject:
hemicellulose,   etc   ; cellulose; cellulosic fibers; chemical pulp; moieties; oxidation; transmittance; ultrasonics;     Show all 8 Subjects
Abstract:
... In this work, chemical pulp was used to prepare hazy transparent films, and the effects of hemicellulose content on carboxyl group formation during TEMPO-(2,2,6,6-tetramethylpiperidine-1-oxyl) mediated oxidation, and the properties of the film prepared from the chemical pulp were evaluated. The hemicellulose content exhibited a negligible effect on carboxyl content formation, while prior alkaline ...
DOI:
10.1007/s10570-019-02844-9

6. Strategy for biological co-production of levulinic acid and polyhydroxyalkanoates by using mixed microbial cultures fed with synthetic hemicellulose hydrolysate

Author:
Pinto-Ibieta, F.; Cea, M.; Cabrera, F.; Abanto, M.; Felissia, F.E.; Area, M.C.; Ciudad, G.
Source:
Bioresource technology 2020 v.309 pp. 123323
ISSN:
0960-8524
Subject:
hemicellulose,   etc   ; acetates; batch systems; biological production; carbon; hydrolysates; levulinic acid; microorganisms; pentoses; polyhydroxyalkanoates; value added;     Show all 11 Subjects
Abstract:
... Hemicellulose hydrolysates (HH), which could be an interesting carbon source to feed mixed microbial cultures (MMC) able to accumulate high value-added compounds. This research focused on the evaluation of a culture strategy to achieve the simultaneous biological production of Levulinic Acid (LA) and Polyhydroxyalcanoates (PHA) by MMC fed with a synthetic HH (SHH). The culture strategy involves th ...
DOI:
10.1016/j.biortech.2020.123323

7. Impact of continuous leachate recirculation during solid state anaerobic digestion of Miscanthus

Author:
Li, Chao; Tao, Yu; Fang, Jun; Li, Qiang; Lu, Wenjing
Source:
Renewable energy 2020 v.154 pp. 38-45
ISSN:
0960-1481
Subject:
hemicellulose,   etc   ; Miscanthus; anaerobic digestion; biogas; cellulose; gas production (biological); leachates; methane; methane production; microbial communities;     Show all 10 Subjects
Abstract:
... Continuous leachate recirculation was performed in a solid-state anaerobic digestion (SS-AD) in an attempt to enhance and improve the biogas (methane) production from Miscanthus sp. Furthermore, microbial community dynamics was analysed, and liaised with the process performance and stability. Results showed that the SS-AD process without leachate recirculation showed significantly higher degradati ...
DOI:
10.1016/j.renene.2020.02.104

8. Insight into synergistic effects of biomass-polypropylene co-pyrolysis using representative biomass constituents

Author:
Chen, Rongjie; Zhang, Shiyu; Cong, Kunlin; Li, Qinghai; Zhang, Yanguo
Source:
Bioresource technology 2020 v.307 pp. 123243
ISSN:
0960-8524
Subject:
hemicellulose,   etc   ; activation energy; biochar; biomass; carbon; cellulose; hydrogenation; lignin; lipids; pyrolysis; synergism; thermogravimetry; weight loss;     Show all 13 Subjects
Abstract:
... The co-pyrolysis behavior of plastic (PP) with six biomass components (cellulose, hemicellulose, lignin, carbohydrate, lipid, protein) was studied by thermogravimetry. The overlap ratio (OR) and the difference in experimental and theoretical weight loss (ΔW) are defined. The results demonstrated that the interaction of lignin and PP was notable with the OR of 0.9661. From ΔW, it was found that the ...
DOI:
10.1016/j.biortech.2020.123243

9. Structural changes and enzymatic hydrolysis yield of rice bran fiber under electron beam irradiation

Author:
Li, Ting; Wang, Li; Chen, Zhengxing; Li, Cheng; Li, Xinyu; Sun, Dongling
Source:
Food and bioproducts processing 2020 v.122 pp. 62-71
ISSN:
0960-3085
Subject:
hemicellulose,   etc   ; bioenergy; cellulose; enzymatic hydrolysis; glucose; grain yield; irradiation; lignin; lignocellulose; rice bran; thermal stability; thermogravimetry;     Show all 12 Subjects
Abstract:
... The enzymatic hydrolysis yield of rice bran fiber (RBF) was enhanced by the electron beam irradiation (EBI) pretreatment. Furthermore, the compositional analysis, structural changes and the thermal stability of RBF and its lignocellulosic fractions (cellulose, hemicellulose and lignin) were investigated in this study. The content of cellulose was significantly (P<0.05) increased as the irradiation ...
DOI:
10.1016/j.fbp.2020.04.004

10. Urea-pretreated corn stover: Physicochemical characteristics, delignification kinetics, and methane production

Author:
Wang, Lili; Cao, Zhen; Zou, Jianyang; Liu, Zhuo; Li, Yibo; Wang, Zhongjiang
Source:
Bioresource technology 2020 v.306 pp. 123097
ISSN:
0960-8524
Subject:
hemicellulose,   etc   ; ammonia; cellulose; corn stover; delignification; lignin; methane production; physicochemical properties; urea;     Show all 9 Subjects
Abstract:
... Solids loading is a key factor in aqueous or gaseous ammonia production from urea. Methane production from urea-pretreated corn stover, as well as the physicochemical characteristics and delignification kinetics of the corn stover, were investigated with four solids loading values (10%–70%) and five ratios of urea to corn stover (1:100–7:10) at 35 °C for 6 weeks. A 1:20 ratio of urea to corn stove ...
DOI:
10.1016/j.biortech.2020.123097

11. Effect of furfural addition on validamycin-A production in fermentation of Streptomyces hygroscopicus 5008

Author:
Lu, Zheng-Yan; Zhong, Jian-Jiang
Source:
Process biochemistry 2020 v.92 pp. 43-48
ISSN:
1359-5113
Subject:
hemicellulose,   etc   ; Streptomyces hygroscopicus; antibiotics; enzyme activity; fermentation; furfural; furfuryl alcohol; hydrogen peroxide; hydrolysates; xylose;     Show all 10 Subjects
Abstract:
... Furfural is one of main inhibitors in hemicellulose hydrolysates such as xylose mother liquor, but its positive effect on the production of validamycin-A (VAL-A), a widely used agricultural antibiotic, was interestingly found in fermentation of Streptomyces hygroscopicus 5008. The furfural level in medium up to 1 g/L was effectively converted to furfuryl alcohol and furoic acid by the microorganis ...
DOI:
10.1016/j.procbio.2020.03.002

12. Effect of steam explosion of oil palm frond and empty fruit bunch on nutrient composition and ruminal fermentation characteristics

Author:
Wu, Hao; Zhou, Zhenming; Yang, Yuanlong; Meng, Qingxiang
Source:
Tropical animal health and production 2020 v.52 no.3 pp. 1223-1228
ISSN:
0049-4747
Subject:
hemicellulose,   etc   ; Elaeis guineensis; fermentation; fruits; nutrient content; rumen fermentation; volatile fatty acids;     Show all 7 Subjects
Abstract:
... In this study, we evaluated the effect of steam explosion of oil palm frond (OPF) and oil palm empty fruit bunch (EFB) on nutrient composition and ruminal fermentation characteristics in vitro. The results showed that steam explosion decreased NDF (P < 0.01), ADF (P < 0.01), and hemicellulose content (P < 0.01) in OPF and EFB. Steam explosion improved the effective energy value of OPF and EFB. In ...
DOI:
10.1007/s11250-019-02117-4
PubMed:
31707684
PubMed Central:
PMC7190680

13. Lignocellulosic biomass: Acid and alkaline pretreatments and their effects on biomass recalcitrance – Conventional processing and recent advances

Author:
Lorenci Woiciechowski, Adenise; Dalmas Neto, Carlos José; Porto de Souza Vandenberghe, Luciana; de Carvalho Neto, Dão Pedro; Novak Sydney, Alessandra Cristine; Letti, Luiz Alberto Junior; Karp, Susan Grace; Zevallos Torres, Luis Alberto; Soccol, Carlos Ricardo
Source:
Bioresource technology 2020 v.304 pp. 122848
ISSN:
0960-8524
Subject:
hemicellulose,   etc   ; alkali treatment; biofuels; biomass; cellulose; lignin; lignocellulose; organic acids and salts; patents; value-added products;     Show all 10 Subjects
Abstract:
... Lignocellulosic biomass is one of the most abundant organic resources worldwide and is a promising source of renewable energy and bioproducts. It basically consists of three fractions, cellulose, hemicelluloses and lignin, which confer a recalcitrant structure. As such, pretreatment steps are required to make each fraction available for further use, with acidic, alkaline and combined acidic-alkali ...
DOI:
10.1016/j.biortech.2020.122848

14. Pelletization of Camellia oleifera Abel. shell after storage: Energy consumption and pellet properties

Author:
Tan, Mengjiao; Luo, Lin; Wu, Zhiqiang; Huang, Zhongliang; Zhang, Jiachao; Huang, Jing; Yang, Yuan; Zhang, Xuan; Li, Hui
Source:
Fuel processing technology 2020 v.201 pp. 106337
ISSN:
0378-3820
Subject:
hemicellulose,   etc   ; Camellia oleifera; combustion; energy; hardness; industrial applications; pelleting; pellets; pyrolysis; relative humidity; temperature;     Show all 11 Subjects
Abstract:
... Camellia oleifera shell (CAS) was stored under three temperature and relative humidity conditions (15 °C-50%, 35 °C-50% and 35 °C-80%) for 32 days, and subsequently compressed into pellets to investigate the influence of storage on pelletization and pellet properties. The characteristics of stored CAS, energy consumption during pelletization, and pellets' properties (density, Meyer hardness, pyrol ...
DOI:
10.1016/j.fuproc.2020.106337

15. Synergistic benefits from a lignin-first biorefinery of poplar via coupling acesulfamate ionic liquid followed by mild alkaline extraction

Author:
Xu, Jikun; Dai, Lin; Gui, Yang; Yuan, Lan; Zhang, Chuntao; Lei, Yang
Source:
Bioresource technology 2020 v.303 pp. 122888
ISSN:
0960-8524
Subject:
hemicellulose,   etc   ; Populus; alkali treatment; biorefining; biotransformation; cellulose; food additives; fractionation; glucose; ionic liquids; ions; lignin; lignocellulose;     Show all 13 Subjects
Abstract:
... A novel mind-set, termed lignin-first biorefinery, is bewitching to synchronously boost lignin output for entirely lignocellulosic utilization. A lignin-first fractionation, using a food-additive derived ionic liquid (1-ethyl-3-methylimidazolium acesulfamate, emimAce) and mild alkaline pretreatments, was formed for the purposely isolating poplar lignin, whilst delivering a cellulose-rich substrate ...
DOI:
10.1016/j.biortech.2020.122888

16. Lignin-carbohydrate complexes (LCCs) and its role in biorefinery

Author:
Zhao, Yong; Shakeel, Usama; Saif Ur Rehman, Muhammad; Li, Hongqiang; Xu, Xia; Xu, Jian
Source:
Journal of cleaner production 2020 v.253 pp. 120076
ISSN:
0959-6526
Subject:
hemicellulose,   etc   ; biomass; biopolymers; biorefining; cellulose; enzymatic hydrolysis; industrial applications; lignin; lignocellulose;     Show all 9 Subjects
Abstract:
... Although lignocellulosic biomass is traditionally considered to be composed of cellulose, hemicellulose, and lignin, each of these components does not exist individually. Structurally, they are chemically bonded to form lignin-carbohydrate complexes (LCC) instead of being simply physically attached. Thus, lignin-carbohydrate complexes actually define the original structure of lignocellulosic bioma ...
DOI:
10.1016/j.jclepro.2020.120076

17. Pretreated Sugarcane Bagasse with Citric Acid Applied in Enzymatic Hydrolysis

Author:
Gomes, Michelle Garcia; dos Santos, Renata Vidal; Barreto, Elisa da Silva; Baffi, Milla Alves; Gurgel, Leandro Vinicius Alves; Baêta, Bruno Eduardo Lobo; Pasquini, Daniel
Source:
Industrial biotechnology 2020 v.16 no.2 pp. 117-124
ISSN:
1931-8421
Subject:
hemicellulose,   etc   ; biotechnology; cellulose; citric acid; enzymatic hydrolysis; enzymes; experimental design; glucose; lignin; sugarcane bagasse; temperature; xylose;     Show all 12 Subjects
Abstract:
... The objective of the study was to evaluate the pretreatment of sugarcane bagasse (SCB) with diluted citric acid solution in a pressurized system and its behavior when submitted to enzymatic hydrolysis using the Cellic® CTec 3 enzyme complex, employing a Doehlert's experimental design (2³), with 5 central points (CP). The operating variables were temperature (T, °C), time (t, min) and percentage by ...
DOI:
10.1089/ind.2019.0039

18. Can supercritical carbon dioxide be suitable for the green pretreatment of plant fibres dedicated to composite applications?

Author:
François, Camille; Placet, Vincent; Beaugrand, Johnny; Pourchet, Sylvie; Boni, Gilles; Champion, Dominique; Fontaine, Stéphane; Plasseraud, Laurent
Source:
Journal of materials science 2020 v.55 no.11 pp. 4671-4684
ISSN:
0022-2461
Subject:
hemicellulose,   etc   ; carbon dioxide; composite materials; fiber quality; fineness; hemp; hygroscopicity; temperature;     Show all 8 Subjects
Abstract:
... This work explores the use of supercritical carbon dioxide (sc-CO₂) conditions as an innovative and environmentally friendly treatment of plant fibres to optimize their performance for integration into composite materials. This study evaluates, in particular, the influence of this treatment on the mechanical, thermal, hygroscopic properties and biochemical features of industrial hemp bast fibres. ...
DOI:
10.1007/s10853-019-04293-y

19. Functional characterization of cellulose-degrading AA9 lytic polysaccharide monooxygenases and their potential exploitation

Author:
Zhang, Ruiqin
Source:
Applied microbiology and biotechnology 2020 v.104 no.8 pp. 3229-3243
ISSN:
0175-7598
Subject:
hemicellulose,   etc   ; catalytic activity; cellulose; endo-1,4-beta-glucanase; functional diversity; fungi; glucose; lignocellulose; saccharification;     Show all 9 Subjects
Abstract:
... Cellulose-degrading auxiliary activity family 9 (AA9) lytic polysaccharide monooxygenases (LPMOs) are known to be widely distributed among filamentous fungi and participate in the degradation of lignocellulose via the oxidative cleavage of celluloses, cello-oligosaccharides, or hemicelluloses. AA9 LPMOs have been reported to have extensive interactions with not only cellulases but also oxidases. T ...
DOI:
10.1007/s00253-020-10467-5

20. Elucidation of Changes in Cellulose Ultrastructure and Accessibility in Hardwood Fractionation Processes with Carbohydrate Binding Modules

Author:
Novy, Vera; Nielsen, Fredrik; Olsson, Johanna; Aïssa, Kevin; Saddler, Jack N.; Wallberg, Ola; Galbe, Mats
Source:
ACS sustainable chemistry & engineering 2020 v.8 no.17 pp. 6767-6776
ISSN:
2168-0485
Subject:
hemicellulose,   etc   ; carbohydrate binding; cellulose; confocal laser scanning microscopy; crystal structure; delignification; fractionation; hardwood; lignin; ultrastructure;     Show all 10 Subjects
Abstract:
... We have recently presented a sequential treatment method, in which steam explosion (STEX) was followed by hydrotropic extraction (HEX), to selectively fractionate cellulose, hemicellulose, and lignin in hardwood into separate process streams. However, above a treatment severity threshold, the structural alterations in the cellulose-enriched fraction appeared to restrict the enzymatic hydrolyzabili ...
DOI:
10.1021/acssuschemeng.9b07589
PubMed:
32391215
PubMed Central:
PMC7202243