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| 1 | Advances in catalytic conversion of lignocellulose to chemicals and liquid fuels显示文摘In response to the awareness of limited fossil resources and environmental concerns,catalytic conversion of renewable lignocellulose biomass to value-added chemicals and fuels is of great significance and attractive for sustainable chemistry.Division of Biomass Conversion and Bio-Energy attached to Dalian National Laboratory for Clean Energy has devoted themselves to valorization of lignocellulose biomass since launched in 2011.Our research interests focus on breeding of biomass resources(inulin and microalgae),exploration of catalytic and biological technologies,and production of energy chemicals and fuels.Although lignocellulose biomass is renewable and abundant,the way of utilization should be reasonable according to its structural characteristics in view of efficiency and economy.In this review,to celebrate the DICP's 70 th anniversary,we will highlight the major fundamental advances in DICP about the conversion of lignocellulose to value-added chemicals and liquid fuels.Particular attention will be paid to the transformation of cellulose and its derivatives to glycols,acids and nitrogen-containing chemicals,hemicellulose-derived platform molecule furfural to jet fuels and lignin to aromatics using catalytic technologies. | Jiping Ma Song Shi Xiuquan Jia Fei Xia Hong Ma Jin Gao Jie Xu | 2019 | Journal of Energy Chemistry2019，28，9： | 6 |
| 2 | Hydrothermal Pretreatment of Lignocellulosic Materials for Improving Bioethanol Production显示文摘With the continued depletion of non-renewable energy resources,it is essential to seek new methods of harnessing clean and renewable energy.In this regard,second-generation bioethanol derived from lignocellulosic biomass has attracted increasing attention in recent years.The choice of the pretreatment method of lignocellulose is critical to the subsequent bioconversion processes.Compared with other conventional chemical pretreatment methods,hydrothermal pretreatment is a simple,low-cost,and economically feasible process that requires water as the only reagent.This paper reviews the research efforts that have been made toward hydrothermal pretreatment of lignocellulosic biomass and focuses on the transformations involving cellulose,hemicellulose,and lignin during this process. | Qian Chen JianXiong Xing Kai Zheng JinSheng Nan Kun Wang | 2017 | Paper And Biomaterials2017，2，3： | 5 |
| 3 | Enrichment of thermophilic and mesophilic microbial consortia for efficient degradation of corn stalk显示文摘Six different environmental samples were applied to enrich microbial consortia for efficient degradation of corn stalk,under the thermophilic and mesophilic conditions.The consortium obtained from anaerobic digested sludge under thermophilic condition(TC-Y)had the highest lignocellulose-degrading activity.The CO_2yield was 246.73 m L/g VS in23 days,meanwhile,the maximum CO_2production rate was 15.48 mL/(CO_2·d),which was28.75%and 52.27%higher than that under mesophilic condition,respectively.The peak value of cellulase activity reached 0.105 U/mL,which was at least 34.61%higher than the other groups.In addition,49.5%of corn stalk was degraded in 20 days,moreover,the degradation ratio of cellulose,hemicellulose and lignin can reach 52.76%,62.45%and42.23%,respectively.Microbial consortium structure analysis indicated that the TC-Y contained the phylum of Gemmatimonadetes,Acidobacteria,Chloroflexi,Planctomycetes,Firmicutes,and Proteobacteria.Furthermore,the Pseudoxanthomonas belonging to GammaProteobacteria might be the key bacterial group for the lignocellulose degradation.These results indicated the capability of degrading un-pretreated corn stalk and the potential for further investigation and application of TC-Y. | Jun Lu Zhiman Yang Wanying Xu Xiaoshuang Shi Rongbo Guo | 2019 | Journal of Environmental Sciences2019，31，4： | 4 |
| 4 | Biomass-Derived Carbon Heterostructures Enable Environmentally Adaptive Wideband Electromagnetic Wave Absorbers显示文摘Although advances in wireless technologies such as miniature and wearable electronics have improved the quality of our lives,the ubiquitous use of electronics comes at the expense of increased exposure to electromagnetic(EM)radiation.Up to date,extensive efforts have been made to develop high-performance EM absorbers based on synthetic materials.However,the design of an EM absorber with both exceptional EM dissipation ability and good environmental adaptability remains a substantial challenge.Here,we report the design of a class of carbon heterostructures via hierarchical assembly of graphitized lignocellulose derived from bamboo.Specifically,the assemblies of nanofibers and nanosheets behave as a nanometer-sized antenna,which results in an enhancement of the conductive loss.In addition,we show that the composition of cellulose and lignin in the precursor significantly influences the shape of the assembly and the formation of covalent bonds,which affect the dielectric response-ability and the surface hydrophobicity(the apparent contact angle of water can reach 135°).Finally,we demonstrate that the obtained carbon heterostructure maintains its wideband EM absorption with an effective absorption frequency ranging from 12.5 to 16.7 GHz under conditions that simulate the real-world environment,including exposure to rainwater with slightly acidic/alkaline pH values.Overall,the advances reported in this work provide new design principles for the synthesis of high-performance EM absorbers that can find practical applications in real-world environments. | Zhichao Lou Qiuyi Wang Ufuoma IKara Rajdeep SMamtani Xiaodi Zhou Huiyang Bian Zhihong Yang Yanjun Li Hualiang Lv Solomon Adera Xiaoguang Wang | 2022 | Nano-Micro Letters2022，14，1： | 3 |
| 5 | Oscillating Cellulase Adsorption and Enhanced Lignocellulose Hydrolysis upon Ultrasound Treatment显示文摘We investigated the effects of ultrasound treatment on cellulase adsorption and lignocellulose hydrolysis.The activity of cellulase remained constant upon lowpower ultrasound treatment(<120 W) and decreased using high-power ultrasound(>280 W).Oscillating cellulase adsorption occurred upon ultrasound treatment with any intensity.The maxima for desorption and adsorption were41.9 and 83.1%,respectively,during 1 h of 90 W ultrasound treatment at 50 °C.A comparison between the shorttime with long-time ultrasound experiments indicated that ultrasound treatment tended to desorb cellulase from substrate.However,ultrasound treatment also led to further surface erosion of biomass,which increased cellulase accessibility.These joint actions of ultrasound treatment induced the oscillating adsorption of cellulase.The increase in cellulase accessibility caused by ultrasound treatment led to a significant enhancement in lignocellulose hydrolysis. | Rongxin Su Renjun Yang Yang Jifeng Ruoyu Du Renliang Huang Wei Qi Zhimin He | 2017 | Transactions of Tianjin University2017，23，1： | 3 |
| 6 | Pretreatment of agricultural residues by supercritical CO_2 at 50–80 °C to enhance enzymatic hydrolysis显示文摘Various agricultural crop residues including corn stover,corn cob,and sorghum stalk with a moisture content of 75 wt%were subjected to a long pretreatment(12–60 h)with supercritical CO_2(scCO_2),at low temperature(50–80°C)and a pressure of 17.5–25.0 MPa.The sugar yields from the enzymatic hydrolysis(EH)of the pretreated samples were as much as three-to fourfold greater than those afforded by the raw materials.However,when pretreatment was conducted within a short time(e.g.0.5 h),as previously reported in the literature,only a slight increase in the EH sugar yields was observed.The proposed sc CO_2pretreatment mechanism demonstrated the role of moisture in the system.Wetting,softening,and swelling were observed to mainly affect the lignocellulose when a suitable amount of water was added.Finally,the samples were analysed by X-ray diffraction and scanning electron microscopy,before and after pretreatment,to investigate the changes in the microscopic structure of the biomass. | Meng-jiao Zhao Qin-qin Xu Guo-min Li Qiao-zhi Zhang Dan Zhou Jian-zhong Yin Hua-shu Zhan | 2019 | Journal of Energy Chemistry2019，28，4： | 3 |
| 7 | Comparison and rapid prediction of lignocellulose and organic elements of a wide variety of rice straw based on near infrared spectroscopy显示文摘Rice straw is a major kind of biomass that can be utilized as lignocellulosic materials and renewable energy.Rapid prediction of the lignocellulose(cellulose,hemicellulose,and lignin)and organic elements(carbon,hydrogen,nitrogen,and sulfur)of rice straw would help to decipher its growth mechanisms and thereby improve its sustainable usages.In this study,364 rice straw samples featuring different rice subspecies(japonica and indica),growing seasons(early-,middle-,and late-season),and growing environments(irrigated and rainfed)were collected,the differences among which were examined by multivariate analysis of variance.Statistic results showed that the cellulose content exhibited significant differences among different growing seasons at a significant level(p<0.01),and the contents of cellulose and nitrogen had significant differences between different growing environments(p<0.01).Near infrared reflectance spectroscopy(NIRS)models for predicting the lignocellulosic and organic elements were developed based on two algorithms including partial least squares(PLS)and competitive adaptive reweighted sampling-partial least squares(CARS-PLS).Modeling results showed that most CARS-PLS models are of higher accuracy than the PLS models,possibly because the CARS-PLS models selected optimal combinations of wavenumbers,which might have enhanced the signal of chemical bonds and thereby improved the predictive efficiency.As a major contributor to the applications of rice straw,the nitrogen content was predicted precisely by the CARS-PLS model.Generally,the CARS-PLS models efficiently quantified the lignocellulose and organic elements of a wide variety of rice straw.The acceptable accuracy of the models allowed their practical applications. | Abdoulaye Aguibou Diallo Zengling Yang Guanghui Shen Jinyi Ge Zichao Li Lujia Han | 2019 | International Journal of Agricultural and Biological Engineering2019，12，2： | 2 |
| 8 | Lignocellulose as an insoluble fiber source in poultry nutrition:a review显示文摘Extensive research in recent years into the use of various fiber sources in poultry nutrition has led to the perception that dietary fiber is more than a simple diet diluent.Several studies showed that the feeding of insoluble fiber sources such as oat hulls,sunflower hulls or wood shavings may affect digestive physiology and function improving chickens health and growth performance.In this context,the effect of lignocellulose as an insoluble dietary fiber source is increasingly being investigated.Lignocellulose is a component of plant cell walls and consists mainly of the insoluble carbohydrate polymers cellulose and hemicelluloses as well as the phenolic polymer lignin.Lignocellulose is chemically and physicochemically different from other insoluble fiber sources and thus possibly has different effects on poultry compared to traditional fiber sources.Several studies investigated the effect of dietary lignocellulose on growth performance,nutrient digestibility,gastrointestinal tract development and intestinal microbiota in broilers and laying hens.Studies differed in terms of feed formulation and lignocellulose inclusion level as well as products of different suppliers were used.The results obtained are inconsistent;beneficial,indifferent or detrimental effects of feeding lignocellulose were observed,so that a final assessment of lignocellulose as a“novel”insoluble fiber source is difficult.This review article summarizes the results of studies in connection with the feeding of lignocellulose to poultry,compares them with those that have used other insoluble fiber sources and illuminates the possible mechanisms of action. | Ilen Röhe Jürgen Zentek | 2021 | Journal of Animal Science and Biotechnology2021，12，4： | 2 |
| 9 | Processing and valorization of cellulose,lignin and lignocellulose using ionic liquids显示文摘Cellulose,lignin and lignocellulose are important bioresources in the nature.Their effective and environmentally friendly utilization not only reduces dependence on fossil resources but also protects the environment.Recently,a class of novel eco-friendly solvents,ionic liquids,is employed to dissolve and process these bioresources.In this mini-review,we summarized the recent advances of processing and valorization of cellulose,lignin and lignocellulose in ionic liquids.It is expected that this up-to-date survey provides a comprehensive information of this field,and accelerates the development and utilization of the renewable plant biomass resources. | Zhenghao Xia Jinyang Li Jinming Zhang Xiaocheng Zhang Xuejing Zheng Jun Zhang | 2020 | Journal of Bioresources and Bioproducts2020，5，2： | 2 |
| 10 | In situ fabrication of Na3V2(PO4)3 quantum dots in hard carbon nanosheets by using lignocelluloses for sodium ion batteries显示文摘The rational assembly of quantum dots on two-dimensional(2 D) carbonaceous materials is very promising to produce materials, but remains a challenge. Here, we develop an assembly strategy of growing Na3 V2(PO4)3 quantum dots with superlattice structure(NVP-QDs-SL) for obtaining precise control of the size, distribution and crystallinity. The multifunctional lignocelluloses(LCs) used as a hard carbon source induce heterogeneous nucleation and confined growth of NVP-QDs-SL, leading to the uniform distribution of NVP-QDs-SL in H/S-doped hard carbon ultra-thin nanosheets(HCS). Detailed electrochemical analysis results from sodium-ion batteries of NVP-QDs-SL show that NVP-QDs-SL could trap the electrons inside HCS, significantly enhancing Na ion storage and transfer kinetics. Compared to the common Na3 V2(PO4)3 nanoparticle cathode, the NVP-QDs-SL/HCS cathode exhibits a high reversible capacity of 149.2 m A h g^-1 at a 0.1 C rate, which is far beyond the theoretical capacity of Na3 V2(PO4)3(117.6 m A h g^-1).At the ultrahigh current rate of 100 C, this cathode still remains a high discharge capacity of 40 m A h g-1.Even after cycling at 20 C over 3000 cycles, an ultrahigh coulombic efficiency close to 100% is still obtained,highlighting its excellent long cycling life, remarkable rate performance and energy density. | Qihao Zhang Xudong Zhang Wen He Guogang Xu Manman Ren Jinhua Liu Xuena Yang Feng Wang | 2019 | Journal of Materials Science & Technology2019，35，10： | 1 |
| 11 | Synthesis of jet fuel additive with cyclopentanone显示文摘A new route was developed for the synthesis of renewable decalin with cyclopentanone which can be derived from lignocellulose.It was found that 1,2,3,4,5,6,7,8-octahydronaphthalene could be selectively produced by the hydrogenation/dehydration/rearrangement of [1,1-bi(cyclopentylidene)]-2-one(i.e.the selfaldol condensation product of cyclopentanone) over a dual-bed catalyst system.Among the investigated catalysts,the Ru/C and Amberlyst-15 resin exhibited the highest activities for the hydrogenation of [1,1-bi(cyclopentylidene)]-2-one to [1,1-bi(cyclopentan)]-2-ol and the dehydration/rearrangement of [1,1-bi(cyclopentan)]-2-ol to 1,2,3,4,5,6,7,8-octahydronaphthalene,respectively.Using Ru/C and Amberlyst-15 resin as the first bed and the second bed catalysts,1,2,3,4,5,6,7,8-octahydronaphthalene was directly produced in high carbon yield(83.7%) under mild conditions(393 K,1 MPa).After being hydrogenated,the1,2,3,4,5,6,7,8-octahydronaphthalene was converted to decalin which can be used as additive to improve the thermal stability and volumetric heat value of jet fuel. | Hao Tang Fang Chen Guangyi Li Xiaofeng Yang Yancheng Hu Aiqin Wang Yu Cong Xiaodong Wang Tao Zhang Ning Li | 2019 | Journal of Energy Chemistry2019，28，2： | 1 |
| 12 | Development and characterization of Saccharomyces cerevisiae strains genetically modified to over-express the pentose phosphate pathway regulating transcription factor STB5 in the presence of xylose显示文摘Background Several enzymes in the pentose phosphate pathway of Saccharomyces cerevisiae have been identified as relating to the constraint of xylose consumption and conversion to ethanol.However,no strategy has been proposed for simultaneous regulation of all contributing enzymes.If multiple enzymes contribute to constraint,over expression of a native transcription factor controlling the entire constraining pathway may provide optimal pathway wide regulation.Further characterization of this strain on both pure sugars and lignocellulosic hydrolysates would provide an opportunity to identify additional bot-tlenecks not addressed by the modification of the pentose phosphate pathway expression pattern.Results A series of strains were developed expressing STB5 and PGI1 under the control of a novel xylose inducible promoter.Increased transcription of STB5 and its regulatory targets was verified via qRT-PCR.No statistically significant difference was found in terms of xylose consumption or ethanol yield in these strains versus control strains.Xylose consumption through both the fermentative and respiratory pathways appeared to be related to oxygen availability and culture density with high-density(low oxygen)cultures consuming xylose more slowly than low-density cultures.The maximum specific consumption rate for high-density cultures was 0.21 g xylose/gDCW/h versus 0.41 g xylose/gDCW/h in lower density cultures.Statistically similar ethanol yields at high and low density(approximately 0.25 g ethanol/g xylose)suggest that the maximum rate of fermentation is linked to the rate of respiration in a stoichiometric fashion.Conclusion This study did not find evidence supporting the pentose phosphate pathway constraint identified in other works.Instead,NAD+availability mediated by oxygen availability and citric acid cycle flux was suggested to limit fermentation.While increased aeration could provide increased conversion of NAD+to NADH(and a stoichiometric increase in fermen-tation flux),this increase would not be expected improve ethanol yield beyond 50%of the theoretical maximum.Based on these findings,future work in Saccharomyces cerevisiae development for fermentation of lignocellulosic hydrolysates should focus on balancing NAD+/NADH availability through non-respiratory pathways. | William Hohenschuh Ronald E.Hector Jeffrey A.Mertens Ganti S.Murthy | 2021 | Systems Microbiology and Biomanufacturing2021，1，1： | 1 |
| 13 | Breaking the temperature limit of hydrothermal carbonization of lignocellulosic biomass by decoupling temperature and pressure显示文摘Hydrothermal carbonization(HTC) of lignocellulosic biomass is a promising technology for the production of carbon materials with negative carbon emissions. However, the high reaction temperature and energy consumption have limited the development of HTC technology. In conventional batch reactors, the temperature and pressure are typically coupled at saturated states. In this study, a decoupled temperature and pressure hydrothermal(DTPH) reaction system was developed to decrease the temperature of the HTC reaction of lignocellulosic biomass(rice straw and poplar leaves). The properties of hydrochars were analyzed by scanning electron microscopy(SEM), Fourier transform infrared(FTIR) spectroscopy, X-ray photoelectron spectroscopy(XPS), Raman spectroscopy, X-ray diffraction(XRD), thermogravimetric analyzer(TGA), etc. to propose the reaction mechanism. The results showed that the HTC reaction of lignocellulosic biomass could be realized at a low temperature of 200℃ in the DTPH process, breaking the temperature limit(230℃) in the conventional process. The DTPH method could break the barrier of the crystalline structure of cellulose in the lignocellulosic biomass with high cellulose content, realizing the carbonization of cellulose and hemicellulose with the dehydration, unsaturated bond formation, and aromatization. The produced hydrochar had an appearance of carbon microspheres, with high calorific values, abundant oxygen-containing functional groups, a certain degree of graphitization, and good thermal stability. Cellulose acts not only as a barrier to protect itself and hemicellulose from decomposition, but also as a key precursor for the formation of carbon microspheres. This study shows a promising method for synthesizing carbon materials from lignocellulosic biomass with a carbon-negative effect. | Shijie Yu Xiaoxiao Yang Qinghai Li Yanguo Zhang Hui Zhou | 2023 | Green Energy & Environment2023，8，4： | 1 |
| 14 | Preparation,Properties,and Applications of Natural Cellulosic Aerogels:A Review显示文摘With the depletion of fossil fuel and increasing environmental concerns,the modernized era of technology is urgently in need for sustainable and eco-friendly materials.The industrial sector certainly possesses enough resources for the production of available cost-effective,renewable,reusable,and sustainable raw materials.Ul-tralight,eco-friendly and renewable cellulosic aerogels are one of the most accentuated materials in the polymer research field due to their highly abundant and inexpensive raw material,biocompatibility,high specific surface area and other feasible properties.This review summarizes the recent progress in cellulosic aerogels,their main processing route,including a detailed description of versatile new solvents along with some essential properties of cellulosic aerogels and illustrate how their variety of chemical functionalities can be adjusted for applications in the fields of thermal insulation,fire retardant,antibacterial,CO 2 capture and energy storage systems.A de-tailed morphological analysis has been elaborated and effect of processing route,solvent medium and drying procedure on the morphology of cellulosic aerogels is also decribed.Finally,we propose some suggestions to the functionalization such as silanized cellulosic aerogels and their applications in antibacterial activity yet they are still in progress and need further study for future research. | Ahsan Zaman Fei Huang Man Jiang Wei Wei Zuowan Zhou | 2020 | Energy and Built Environment2020，1，1： | 1 |
| 15 | Exploring the region-wise diversity and functions of symbiotic bacteria in the gut system of wood-feeding termite,Coptotermes formosanus,toward the degradation of cellulose,hemicellulose,and organic dyes显示文摘The wood-feeding termite Coptotermes formosanus represents a unique and impressive system for lignocellulose degradation.The highly efficient digestion of lignocellulose is achieved through symbiosis with gut symbionts like bacteria.Despite extensive research during the last three decades,diversity of bacterial symbionts residing in individual gut regions of the termite and their associated functions is still lacking.To this end,cellulose,xylan,and dye-decolorization bacteria residing in foregut,midgut,and hindgut regions of C.formosanus were enlisted by using enrichment and culture-dependent molecular methods.A total of 87 bacterial strains were successfully isolated from different gut regions of C.formosanus which belonged to 27 different species of 10 genera,majorly affiliated with Proteobacteria(80%)and Firmicutes(18.3%).Among the gut regions,37.9%of the total bacterial isolates were observed in the hindgut that demonstrated predominance of cellulolytic bacteria(47.6%).The majority of the xylanolytic and dye-decolorization bacteria(50%)were obtained from the foregut and midgut,respectively.Actinobacteria represented by Dietza sp.was observed in the hindgut only.Based on species richness,the highest diversity was observed in midgut and hindgut regions each of which harbored seven unique bacterial species.The members of Enterobacter,Klebsiella,and Pseudomonas were common among the gut regions.The lignocellulolytic activities of the selected potential bacteria signpost their assistance to the host for lignocellulose digestion.The overall results indicate that C.formosanus harbors diverse communities of lignocellulolytic bacteria in different regions of the gut system.These observations will significantly advance our understanding of the termite–bacteria symbiosis and their microbial ecology uniquely existed in different gut regions of C.formosanus,which may further shed a light on its potential values at termite-modeled biotechnology. | Mudasir A.Dar Rongrong Xie Radhakrishna S.Pandit Blessing Danso Chenchen Dong Jianzhong Sun | 2022 | Insect Science2022，29，5： | 0 |
| 16 | Integrated engineering of enzymes and microorganisms for improving the efficiency of industrial lignocellulose deconstruction显示文摘Bioconversion of lignocellulosic biomass to fuels and chemicals represents a new manufacturing paradigm that can help address society’s energy,resource,and environmental problems.However,the low efficiency and high cost of lignocellulolytic enzymes currently used hinder their use in the industrial deconstruction of lignocellu-lose.To overcome these challenges,research efforts have focused on engineering the properties,synergy,and production of lignocellulolytic enzymes.First,lignocellulolytic enzymes’catalytic efficiency,stability,and toler-ance to inhibitory compounds have been improved through enzyme mining and engineering.Second,synergistic actions between different enzyme components have been strengthened to construct customized enzyme cocktails for the degradation of specific lignocellulosic substrates.Third,biological processes for protein synthesis and cell morphogenesis in microorganisms have been engineered to achieve a high level and low-cost production of lignocellulolytic enzymes.In this review,the relevant progresses and challenges in these fields are summa-rized.Integrated engineering is proposed to be essential to achieve cost-effective enzymatic deconstruction of lignocellulose in the future. | Guodong Liu Yinbo Qu | 2021 | Engineering Microbiology2021，1，1： | 0 |
| 17 | Co@CoO:An efficient catalyst for the depolymerization and upgrading of lignocellulose to alkylcyclohexanols with cellulose intact显示文摘The depolymerization and upgrading of lignin from raw biomass,while keeping cellulose intact is important in biorefinery and various metal-based catalysts have been used in reductive catalytic fractionation,a key method in'lignin-first'strategy,Recently,we found that a core-shell structured Co@CoO catalyst with CoO shell as the real active site had excellent performance in the hydrogenolysis of 5-hydromethylfurfural to 2,5-dimethylfuran due to its unique ability to dissociate H_(2)and yield active H^(δ-)species(Xiang et al.,2022).In this work,we report a one-pot depolymerization and upgrading of lignocellulose to alkylcyclohexanols,a flavour precursor,with intact cellulose over this unique core-shell structured catalyst,Co@CoO.Lignin model compounds(β-O-4,4-O-5,α-O-4)were first used to clarify the activity of Co@CoO catalyst.Then,the one-pot conversion of various organosolv lignin(birch,pine and poplar)to alkylcyclohexanols was realized with the mass yield of alkylcyclohexanols up to25.8 wt%from birch lignin under the reaction condition of 210℃,1 MPa H_(2),16 h.Finally,the corresponding woody sawdusts were used as feedstocks and found that the Co@CoO catalyst indeed preferentially depolymerized and upgraded the lignin part and obtained the same alkylcyclohexanols products with the retention of cellulose-rich pulp.The collected alkylcyclohexanols were further esterified to obtain valueadded esters,which can be used as flavors.This work will inspire the design of new efficient metal oxide catalysts in lignin fractionation and depolymerization to high-value-added chemicals with intact cellulose. | Shuang Xiang Lin Dong Zhiqiang Wang Xue Han Yong Guo Xiaohui Liu Xue-Qing Gong Yanqin Wang | 2023 | Journal of Energy Chemistry2023，，2： | 0 |
| 18 | Dynamic Changes of Microbial Community for Degradation of Lignocellulose显示文摘Dynamic changes of a microbial community for lignocellulose degradation were explored in details. Community composition and development were investigated by the means of denaturing gradient gel electrophoresis (DGGE), and results showed that the microbial community was constituted of 14 kinds of bacteria and presented the fluctuation in some degrees with fermentation. Furthmore, the result of cluster analysis of DGGE pattern was accordant with growth curve, and the degradation process was divided into three stages: initial stage (0-12 h), intermediate stage (24-144 h) and end stage (144-216 h). | LI Wenzhe LIU Shuang WANG Chunying ZHENG Guoxiang | 2010 | Journal of Northeast Agricultural University(English Edition)2010，17，4： | 0 |
| 19 | Bioconversion of lignocellulosic biomass into bacterial nanocellulose:challenges and perspectives显示文摘Nanocellulose has various outstanding properties and great potential for replacing petrochemical products.The utilization of lignocellulose to produce nanocellulose is of great significance to the sustainable development of the economy and society.However,the direct extraction of nanocellulose from lignocellulose by chemical method is challenged by toxic chemicals utilization,energy and time consumption,and waste water generation.Therefore,this paper addressed the conversion of lignocellulosic biomass into bacterial nanocellulose(BNC)by the biological method.Moreover,this article highlights the recent advances in potentials and challenges of lignocellulosic biomass for BNC production through the bioconversion process,including biomass pretreatment,enzymatic hydrolysis,glucose and xylose fermentation,GA accumulation,and inhibitor tolerant.The development in metabolic and evolutionary engineering to enhance the production capacity of BNC-producing strain is also discussed.It is expected to provide guidance on the effective bioproduction of nanocellulose from lignocellulosic biomass. | Wenchao Li Yuqing Shen Huan Liu Xinxin Huang Bin Xu Cheng Zhong Shiru Jia | 2023 | Green Chemical Engineering2023，4，2： | 0 |
| 20 | Pretreatment mechanism ofβ-O-4 lignin during phosphoric acid-acetone process based on density functional theory and molecular dynamic simulations显示文摘Pretreatment mechanism ofβ-O-4 lignin(Lβ-O-4)during the phosphoric acid-acetone process involves a series of interactions between lignin and solvent molecule(H2O,CH3COCH3 and H3PO4)which lead to the adsorption,solubility and decomposition of lignin.Coniferyl alcohol guaiacyl glycerol(CAGG)with the predominant linkage(β-O-4 ether bond)was chosen as the modelβ-O-4 lignin(Lβ-O-4)for investigating the detailed pretreatment mechanism based on density functional theory calculations and molecular dynamic simulations.Interactions betweenβ-O-4 lignin and solvent molecules were firstly detected.Only physical interaction occurred betweenβ-O-4 lignin and the solvent molecule.The attractive van der Waals interaction favored CH3COCH3 molecules approaching to Lβ-O-4,showing a compatibility of Lβ-O-4 in CH3COCH3 solution.Furthermore,following the temperature effect on the dynamics processes,larger dynamics calculations and experiments were carried out to reveal the detailed dissolution and precipitation ofβ-O-4 lignin in various solutions. | Zhang Junjiao Zhu Jinqi Lin Changfeng Wang Tipeng Dong Changqing Qin Wu | 2016 | International Journal of Agricultural and Biological Engineering2016，9，2： | 0 |
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