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Electrocatalytic cleavage of a lignin β-O-4 model compound and coupling with nitrogen-containing aromatics using Prussian blue analogue-derived nickel–cobalt spinel

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Journal of Energy Chemistry 2025年第1期100卷 628-636页

作者： Yi Qi Xueying Chen Bowen Liu Xuliang Lin Xueqing Qiu Yanlin Qin Guangdong Provincial Key Laboratory of Plant Resources biorefinery School of Chemical Engineering and Light Industry Guangdong University of Technology Guangdong Provincial Laboratory of Chemistry and Fine Chemical Engineering Jieyang center Guangdong Basic research center of Excellence for Ecological Security and Green Development Guangdong University of Technology

Electrochemical conversion of lignin for the production of high-value heterocyclic aromatic compounds has great *** demonstrate the targeted synthesis and cation modulation of NiCo2O4spinel nanoboxes,synthesized via cation exchange and calcination *** catalysts exhibit excellent efficacy in the electrocatalytic conversion of lignin model compounds,specifically 2-phenoxy-1-phenylethanol,into nitrogen-containing aromatics,achieving high conversion rates and *** catalysts were synthesized via a cation exchange and calcination oxidation process,using Prussian blue nanocubes as *** porous architecture and polymetallic composition of the NiCo2O4spinel demonstrated superior performance in electrocatalytic oxidative coupling,achieving a 99.2 wt%conversion rate of the 2-phenoxy-1-phenylethanol with selectivities of 37.5 wt%for quinoline derivatives and 31.5 wt%for *** innovations include the development of a sustainable one-pot synthesis method for quinoline derivatives,the elucidation of a multistage reaction pathway involving CAO bond cleavage,hydroxyaldol condensation,and CAN bond formation,and a deeper mechanistic understanding derived from DFT *** work establishes a new strategy for lignin valorization,offering a sustainable route to produce high-value nitrogen-containing aromatics from renewable biomass under mild conditions,without the need for additional reagents.

关键词： Spinel biomass valorization Electrocatalysis Lignin oxidation Coupling

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Influence of Formulation and Hot-Pressing Conditions on the Performance of Bio-Based Molasses Adhesive for Plywood

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Journal of Renewable Materials 2024年第8期12卷 1383-1397页

作者： Jajang Sutiawan Alifah Syahfitri Sukma Surya Kusumah Dede Hermawan Rita Kartika Sari Luthfi Hakim Efri Mardawati Muhammad Adly Rahandi Lubis research center for biomass and Bioproducts National Research and Innovation AgencyCibinong16911Indonesia Forest Product Department Faculty of Forestry and EnvironmentIPB UniversityBogor16680Indonesia Department of Forest Products Faculty of ForestryUniversitas Sumatera UtaraMedan20155Indonesia research collaboration center for biomass and biorefinery BRIN and Universitas PadjadjaranBandung40600Indonesia Department of Agro-Industrial Technology Universitas PadjadjaranBandung40600Indonesia

Molasses can serve as a natural adhesive for plywood and ***,several disadvantages remain,including lower dimensional stability and low bonding strength compared to other ***,modifications are needed to use molasses as an adhesive for *** research aims to improve bio-based molasses(MO)adhesive for plywood using citric acid(CA)*** addition,this research aims to analyze the effect of adding citric acid and to investigate the optimum hot-pressing temperature to produce the best quality *** the first stage,the molasses and citric acid were combined in a ratio of 100:0,75:25,50:50,25:75,0:100 w/w%.Then,the second stage focuses on analyzing the influences of pressing temperature based on an optimum first *** research demonstrated that the addition of CA altered the gelation time,solid content,viscosity,and pH of the molasses *** addition,the thermal properties of molasses adhesives were changed after mixing with citric *** phenomena indicate changes in characteristics,such as the curing of ***,the characteristics of plywood showed a steady improvement as the CA ratio increased but revealed a significant decline for the 25:75 MO-CA *** raising the pressing temperature from 180℃ to 200℃,the quality of plywood was effectively *** plywood that was bonded using adhesives with a 50:50 MO-CA ratio exhibited superior mechanical properties and improved dimensional stability compared to the plywood bonded solely with ***,the optimal mechanical and physical properties resulted in plywood bonded with a 50:50 MO-CA ratio when subjected to a pressing temperature of 200℃.The Thermal and FTIR measurements revealed that CA established ester bonds with both the MO and wood *** conclusion,the mechanical characteristics of plywood were improved,while maintaining its excellent dimensional stability.

关键词： Citric acid composite molasses pressing temperature plywood

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Impact of Temperature on Influenza A Status during Global Warming Hiatus

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Biomedical and Environmental Sciences 2019年第7期32卷 554-557页

作者： YAN Shao Min WU Guang State Key Laboratory of Non-Food biomass and Enzyme Technology National Engineering Research Center for Non-Food Biorefinery Guangxi Key Laboratory of Bio-refinery Guangxi Academy of Sciences

Temperature is a crucial factor that affects in flue nza tran smissi on. Therefore, several studies have correlated various aspects of in flue nza with temperature from the global warming period during which temperature exhibits a clear trend. The global warming hiatus has been existing since the year 1998. This provides an opportunity to investigate the effect of temperature on the transmission of influenza from the viewpoint that temperature is trendless.

关键词： Influenza A Global Warming Hiatus

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Arabidopsis thaliana NOP10 is required for gametophyte formation

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Journal of Integrative Plant Biology 2018年第8期60卷 723-736页

作者： Lin-Xiao Li Hong-Ze Liao Li-Xi Jiang Qing Tan De Ye Xue-Qin Zhang State Key Laboratory of Plant Physiology and Biochemistry College of Biological Sciences China Agricultural University State Key Laboratory of Non-Food biomass Energy and Enzyme Technology National Engineering Research Center for Non-Food Biorefinery and Guangxi Key Laboratory of Biorefinery Guangxi Academy of Sciences College of Agriculture & Biotechnology Zhejiang University

The female gametophyte is crucial for sexual reproduction of higher plants, yet little is known about the molecular mechanisms underlying its development. Here, we report that Arabidopsis thaliana NOP10 （AtNOP10） is required for female gametophyte formation. AtNOP10 was expressed predominantly in the seedling and reproductive tissues, including anthers, pollen grains, and ovules. Mutations in AtNOP10 interrupted mitosis of the functional megaspore during early development and prevented polar nuclear fusion in the embryo sacs. AtNOP10 shares a high level of amino acid sequence similarity with Saccharornycescerevisiae （yeast） NOPIo （ScNOP1o）, an important compo- nent of the H/ACA small nucleolar ribonucleoprotein particles （H/ACA snoRNPs） implicated in 18S rRNA synthe- sis and rRNA pseudouridylation. Heterologous expression of ScNOP10 complemented the mutant phenotype of Atnop10. Thus, AtNOPIo influences functional megaspore mitosis and polar nuclear fusion during gametophyte formation in Arabidopsis.

关键词： Figure Arabidopsis thaliana NOP10 is required for gametophyte formation

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Overview of the Synthesis, Characterization, and Application of Tannin-Glyoxal Adhesive for Wood-Based Composites

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Journal of Renewable Materials 2024年第7期12卷 1165-1186页

作者： Awanda Wira Anggini Rita Kartika Sari Efri Mardawati Tati Karliati Apri Heri Iswanto Muhammad Adly Rahandi Lubis research center for biomass and Bioproducts National Research and Innovation AgencyCibinong16911Indonesia Department of Forest Products Faculty of Forestry and EnvironmentIPB UniversityBogor16680Indonesia Department of Agro-Industrial Technology Universitas PadjadjaranBandung45363Indonesia research collaboration center for biomass and biorefinery BRIN and Universitas PadjadjaranBandung45363Indonesia School of Life Sciences and Technology Institut Teknologi BandungBandung40132Indonesia Department of Forest Products Technology Faculty of ForestryUniversitas Sumatera UtaraMedan20355Indonesia

More than a century after its initial synthesis,urea-formaldehyde(UF)resins still have dominant applications as adhesives,paints,and ***,formaldehyde in this industry produces formaldehyde emissions that are dangerous to *** have spent the last decade replacing formaldehyde and phenol with environmentally friendly substances such as glyoxal and tannin to create bio-based *** review covers recent advances in synthesizing glyoxal tannin-based resins,especially those made from sustainable raw material substitutes and changes made to synthetic processes to improve mechanical *** efficacy of using tannin-glyoxal adhesives in producing wood-based composites has been *** glyoxylate reaction forms cross-linked bridges between the aromatic sites of the tannin and glyoxal molecular *** tannin adhesive with a greater percentage of glyoxal than tannin will produce an adhesive with better *** gel time reduces as the hardener concentration rises from 7.5%to 15%when glyoxal is used in ***,excessive amounts of glyoxal will result in a decrease in viscosity *** exhibits faster delivery degradation when it reaches a maximum temperature of approximately 130°C,although it initiates the curing process slightly slower at 110°*** glyoxal to tannin-based adhesives can improve the mechanical properties of composite *** wet shear strength of the resulting plywood is increased by 105.4%with the addition of 5-weight percent tannin-based resin with glyoxal as a cross-linker in Soy Protein *** glyoxal as a hardener,the panels produced showed good internal bond strengths(>0.35 MPa)and met the international standard specifications for interior-grade panels.

关键词： Bio-based adhesives glyoxal tannin wood adhesives wood-based composites

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Regulating the nanoscale intimacy of metal and acidic sites in Ru/γ-Al_(2)O_(3)for the selective conversions of lignin-derived phenols to jet fuels

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Journal of Energy Chemistry 2022年第3期31卷 576-586,I0015页

作者： Shanshuai Chen Weichen Wang Xue Li Puxiang Yan Wanying Han Tian Sheng Tiansheng Deng Wanbin Zhu Hongliang Wang center of biomass Engineering/College of Agronomy and Biotechnology China Agricultural UniversityBeijing 100193China Sanya Institute of China Agricultural University Sanya 572025HainanChina College of Chemistry and Materials Science Anhui Normal UniversityWuhu 241000AnhuiChina Shanxi Engineering research center of biorefinery Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001ShanxiChina

Catalytic hydrodeoxygenation(HDO)of biomass-derived oxy-compounds to advanced hydrocarbon fuels usually requires bifunctional catalysts containing metals and acidic *** appropriate tuning of metal and/or acidic active sites at interfaces of bifunctional catalysts can significantly improve catalyst activity and product ***,4-trifuoromethyl salicylic acid(TFMSA),as a hydrothermal stable organic acid,was employed to tailor the bifunctional interface of Ru/γ-Al_(2)O_(3)to enhance the catalytic performance on converting lignin-derived phenols to jet fuel range *** than 80%phenol was converted into cyclohexane at 230°C for 1 h over Ru/γ-Al_(2)O_(3)modified by TFMSA,which was about three times higher than that over unmodified Ru/γ-Al_(2)O_(3).X-ray diffraction(XRD),Transmission electron microscope(TEM),H2 chemisorption,and energy dispersive X-ray spectroscopy(EDS)elemental mapping results indicated that Ru nanoparticles and TFMSA were well distributed onγ-Al_(2)O_(3),and a nanoscale intimacy between Ru and TFMSA was ***,Fourier transform infrared spectroscopy after pyridine adsorption(Py-FT-IR)analysis proved that Brønsted acidic sites on the catalytic interfaces of TFMSA modified Ru/γ-Al_(2)O_(3)had been ***,the kinetic and density functional theory(DFT)results suggested that the synergistic effects of adjacent Ru nanoparticles and acidic sites were crutial for promoting the rate-limiting conversion step of phenol HDO to cyclohexane.

关键词： Lignin Phenols Bifunctional catalysts Hydrodeoxygenation Jet fuels

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Correlation of Combined Characters of Amino Acid and Whole Protein with Success Rate of Crystallization of <i>Lactobacillus</i>Proteins

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Journal of Biomedical Science and Engineering 2019年第4期12卷 245-256页

作者： Shaomin Yan Guang Wu State Key Laboratory of Non-food biomass Enzyme Technology National Engineering Research Center for Non-Food Biorefinery Guangxi Key Laboratory of Biorefinery Guangxi Academy of Sciences Nanning China

Crystallization of proteins is a very delicate process, which is influenced by many known and unknown factors. Of tested factors, many factors are exclusively related to individual amino-acid characters such as molecular weight or protein characters such as protein length. It is considered necessary to test factors that combine both individual amino-acid characters and protein characters with respect to success rate of crystallization. In this study, two combined characters characterizing individual amino-acid character and protein character, amino acid distribution probability and future composition, were used to correlate the success rate of crystallization of proteins from Lactobacillus via modeling. The results obtained from logistic regression and neural network were compared against the results obtained from each of 533 individual amino-acid characters. This study demonstrated that the combined characters are involved in crystallization process and should be taken into account for predicting the success rate of crystallization process.

关键词： Amino Acid Character Distribution Probability Future Composition Lactobacillus Protein Crystallization

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Building Quantitative Gene Regulatory Mechanism in Quorum Sensing in <i>Pseudomonas aeruginosa</i>Using Transcriptomic Data

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Journal of Biomedical Science and Engineering 2020年第2期13卷 13-35页

作者： Shaomin Yan Guang Wu State Key Laboratory of Non-Food biomass and Enzyme Technology National Engineering Research Center for Non-Food Biorefinery Guangxi Key Laboratory of Biorefinery Guangxi Academy of Sciences Nanning China

A large amount of transcriptomic data provides opportunities 1) to verify the gene regulatory mechanism, which is usually obtained from a single experiment, at population level;2) to uncover the gene regulatory mechanism at population level;and 3) to build a quantitatively gene regulatory mechanism. One of the best studied regulatory mechanisms in bacteria is the quorum sensing (QS), which plays an important role in regulation of bacteria population behaviors such as antibiotic production, biofilm formation, bioluminescence, competence, conjugation, motility and sporulation. Pseudomonas aeruginosa is a Gram-negative bacterium causing diseases in plants, animals, humans, and its biofilm and drug-resistance become great concerns in clinics. P. aeruginosa has three QS systems including a specific one for Pseudomonas. In this study, the transcriptomic data of P. aeruginosa were combined from 104 publications and QS gene expressions were analyzed under different experimental conditions. The results demonstrate the quantitatively regulatory mechanisms of QS genes at population level including 1) to rank and group QS-related genes according to their activity;2) to quantitatively define the role of a single global regulator;3) to find out the probability that a global regulator impacts QS genes and the probability that a QS gene responds to global regulators;and 4) to search for overlapped genes under four types of experimental conditions. These results provide integrative information on understanding the regulation of QS genes at population level.

关键词： Gene Quantitative Regulatory Mechanism Pseudomonas aeruginosa Quorum Sensing Transcriptomic Analysis

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Uptake of Polycyclic Aromatic Hydrocarbons across Bacterial Membrane

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Advances in Microbiology 2020年第7期10卷 331-348页

Polycyclic aromatic hydrocarbons (PAHs) are important pollutants, whose biodegradation and bioremediation with microorganisms are the promising ways to clean environments and reduce their exposure to humans. Although the transportation of PAHs across bacterial membrane is the first step forwards their biodegradation, it receives less attention. In this mini-review, we explore which transport system for uptake of carbon sources can serve for uptake of PAHs in bacteria, and try to uncover some patterns in their transport mechanisms. Collectively, 1) the major carbohydrate transport system, PTS, is unlikely to take PAHs because PAHs lack a hydroxy group for phosphorylation but aromatic acids are good candidates;2) PAHs could probably go through H+ symporters, especially the low-molecular-weight PAHs, which are partially dissolvable in water;3) it is unlikely that PAHs can produce chemiosmotic ion gradients to go through uniporters;and 4) antiporters could serve as transporters to transport PAHs across bacterial membrane only after the metabolism of PAHs generates extra H+ inside cell. Accordingly, the basic mechanism for uptake of PAHs is whether they can donate H+ in order to generate an electrochemical proton gradient to go through symporters.

关键词： Bacteria Polycyclic Aromatic Hydrocarbon Transport Mechanisms

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Prediction of Mutations in H7 Hemagglutinins from Influenza A Virus

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Journal of Biomedical Science and Engineering 2020年第8期13卷 175-186页

作者： Shaomin Yan Guang Wu National Engineering research center for Non-Food biorefinery State Key Laboratory of Non-Food Biomass and Enzyme Technology Guangxi Biomass Engineering Technology Research Center Guangxi Key Laboratory of Bio-Refinery Nanning China

Influenza A viruses have led several pandemics and epidemics in human history. H7 subtype influenza mainly infects avian but also humans occasionally. Since the outbreak of H7N9 subtype influenza occurred in China in 2013, this virus is still circulating in domestic poultry and leading several waves of influenza. To prevent influenza, vaccination is an important strategy. However, influenza virus evolves constantly, but unpredictably. If we would have a one-to-one cause-mutation relationship, the mutation prediction would be possible. However, many external causes, which led to the mutations in the past, might not leave any trace due to the change in environments, whereas the current virus might not be subject to the historically external causes because of evolution. Furthermore, the protein should have the internal causes, which might be quite unclear and difficult to quantify, to engineer mutations. Indeed, various forces twist proteins into 3-demensional structures, whereas any perturbation could lead to a mutation. Of various internal causes for mutation, randomness in protein primary structure should play an important role in mutation. Over years, we have developed three methods to quantify the randomness within a protein primary structure;thus we build a relationship between cause, which is randomness in primary structure, and mutations, which are occurrence and non-occurrence of mutation. In this way, the cause-mutation relationship becomes the problem of classification, which can be solved using logistic regression and neural network. In this study, we apply this model to predict 1) the mutation positions in H7 hemagglutinins from influenza A virus and 2) the would-be-mutated amino-acids at predicted positions with the amino-acid mutating probability. The results show suitability and predictability in such modelling, and pave the way for further development.

关键词： Hemagglutinin Influenza Mutation Neural Network Prediction Randomness

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