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Molecularly engineered lignin to polyphenol via organocatalysis as an active sunscreen ingredient

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Journal of Bioresources and Bioproducts 2024年第2期9卷 197-210页

作者： Yuanlong Guo Pengcheng Liu Lei deng Changwei Lui Michael North Gang Hu Qitian Huang Zongbao Kent zhao Haibo Xie Department of Polymeric Materials&Engineering Guizhou UniversityGuiyang 550025China KZJ New Materials Group Guizhou Co.Ltd. Guizhou 551200China Green Chemistry Centre of Excellence Department of ChemistryUniversity of YorkYork YO105DDUK Dalian Institute of Chemical Physics Chinese Academy of SciencesDalian 116023China

Phenolation is one of the effective strategies to synthesize lignin-based polyphenols,improve lignin’s properties,and extend its value-added applications in biological,medicinal and cosmetic ***,by taking the structural feature advantage of lignin,an effective and green strategy was developed to molecularly engineer lignin into a robust lignin-3-(2-hydroxyphenyl)propionate ester(LPPE)derivative via a transesterification reaction between 3,4-dihydrocoumarin(DHC)and the aliphatic hydroxyls in lignin under *** strategy is optimized and the novel derivative was systematically characterized by ^(1)H,^(13)C and ^(31)P nuclear magnetic resonance(NMR)and Fourier transform infrared(FT-IR)*** findings indicated that the successful introduction of 3-(2-hydroxyphenyl)propionate groups using a OH groups/DHC/organic base mo-lar ratio of 1꞉1꞉0.3 at 120℃ for 6 h increased the content of phenolic hydroxyl groups from 1.7931 to 3.0179 mmol/g,and the LPPE exhibited excellent ultraviolet-absorbing and antioxidant per-formance with up to 90%free radical scavenging activity within 20 min using 5 mg/mL of *** addition,good biocompatibility and a high Sun protection factor(SPF)value of 40.9 were achieved at 5%(w)dosage of LPPE in the cream,indicating its significant application potential in sunscreen.

关键词： Phenolation of lignin Organocatalysis 3,4-dihydrocoumarin Antioxidant Sunscreen cream

Typhoon-Induced Ocean Waves and Stokes Drift:A Case Study of Typhoon Mangkhut(2018)

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China Ocean Engineering 2024年第4期38卷 711-724页

作者： WU Zhi-yuan GAO Kai CHEN Jie ZHANG Hao-jian deng Bin JIANG Chang-bo LIU Yi-zhuang LYU zhao YAN Ren School of Hydraulic and Environmental Engineering Changsha University of Science&TechnologyChangsha 410114China Key Laboratory of Water-Sediment Sciences and Water Disaster Prevention of Hunan Province Changsha 410114China State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Hohai UniversityNanjing 210024China State Key Laboratory of Coastal and Offshore Engineering Dalian University of TechnologyDalian 116024China School of Civil Engineering Hunan University of TechnologyZhuzhou 412007China

Ocean waves and Stokes drift are generated by *** study investigated the characteristics of ocean waves and wave-induced Stokes drift and their effects during Typhoon Mangkhut using European Centre for MediumRange Weather Forecasts(ECMWF)ERA5 datasets and observational *** results revealed that the typhoon generated intense cyclones and huge typhoon waves with a maximum wind speed of 45 m/s,a minimum pressure of955 h Pa,and a maximum significant wave height of 12 *** Stokes drift caused by typhoon waves exceeded 0.6m/s,the Stokes depth scale exceeded 18 m,and the maximum Stokes transport reached 6 m^(2)/*** spatial distribution of 10-m wind speed,typhoon wave height,Stokes drift,Stokes depth,and Stokes transport during the typhoon was highly correlated with the typhoon *** distribution along the typhoon track showed significant zonal asymmetry,with greater intensity on the right side of the typhoon track than on the left *** findings provide important insights into the impact of typhoons on ocean waves and Stokes drift,thus improving our understanding of the interactions between typhoons and the ocean *** study also investigated the contribution of Stokes transport to the total net transport during typhoons using Ekman-Stokes Numbers as a comparative *** results indicated that the ratio of Stokes transport to the total net transport reached up to 50%within the typhoon radius,while it was approximately 30%outside the *** Stokes transport induced by typhoon waves led to divergence in the transport direction,which resulted in upwelling of the lower ocean as a compensation ***,Stokes transport played a crucial role in the vertical mixing of the ocean during *** findings suggested that Stokes transport should be paid more attention to,particularly in high latitude ocean regions,where strong winds can amplify its effects.

关键词： Stokes drift typhoon waves Ekman-Stokes transport vertical mixing Typhoon Mangkhut

Timing effect of high temperature exposure on the plasticity of internode and plant architecture in maize

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Journal of Integrative Agriculture 2024年第2期23卷 551-565页

作者： Binbin Li Xianmin Chen Tao deng Xue zhao Fang Li Bingchao Zhang Xin Wang Si Shen Shunli Zhou College of Agronomy and Biotechnology China Agricultural UniversityBeijing 100193China China Tobacco Hunan Industrial Corporation Changsha 410019China Innovation Center of Agricultural Technology for Lowland Plain of Hebei Wuqiao 061802China

The occurrence of high temperature(HT)in crop production is becoming more frequent and unpredictable with global warming,severely threatening food *** state of an organ’s growth and development is largely determined by the temperature conditions it is exposed to over *** is the main cereal crop,and its stem growth and plant architecture are closely related to lodging resistance,and especially sensitive to ***,systematic research on the timing effect of HT on the sequentially developing internode and stem is currently *** identify the timing effect of HT on the morphology and plasticity of the stem in maize,two hybrids(Zhengdan 958(ZD958),Xianyu 335(XY335))characterized by distinct morphological traits in the stem were exposed to a 7-day HT treatment from the V6 to V17 stages(Vn presents the vegetative stage with n leaves fully expanded)in *** results demonstrated that exposure to HT during V6-V12 accelerated the rapid elongation of *** instance,HT occurring at V7 and V12 specifically promoted the lengths and weights of the 3rd-5th and 9th-11th internodes,***,HT slowed the growth of internodes adjacent to the promoted ***,compared with control,the plant height was significantly increased soon after HT treatment,but the promotion effect became narrower at the subsequent flowering stage,demonstrating a self-adjusting mechanism in the maize plant in response to ***,HT altered the plant architectures,including a rising of the ear position and increase in the ear position ***335 exhibited greater sensitivity in stem development than ZD958 under HT *** findings improve our systematic understanding of the plasticity of internode and plant architecture in response to the timing of HT exposure.

关键词： maize high temperature internode growth plasticity plant architecture

In Situ Sustained Macrophage-Targeted Nanomicelle-Hydrogel Microspheres for Inhibiting Osteoarthritis

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Research 2024年第1期2023卷 1-16页

作者： XiaoXiao Li Xingchen Li Jielai Yang Yawei Du Liang Chen Gang zhao Tingjun Ye Yuan Zhu Xiangyang Xu Lianfu deng Wenguo Cui Department of Orthopaedics Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint DiseasesShanghai Institute of Traumatology and OrthopaedicsRuijin HospitalShanghai Jiao Tong University School of MedicineShanghai 200025P.R.China

There are stillchallenges in applying drug nanocarriers for in situ sustained macrophage targeting and regulation,due to the rapid clearance of nanocarriers and burst drug release ***,a nanomicellehydrogel microsphere,characterized by its macrophage-targeted nanosized secondary structure that allows it to accurately bind to M1 macrophages through active endocytosis,is employed for in situ sustained macrophage targeting and regulation,and addresses the insufficient osteoarthritis therapeutic efficacy caused by rapid clearance of drug *** 3-dimensional structure of a microsphere can prevent the rapid escape and clearance of a nanomicelle,thus keeping it in joints,while the ligand-guided secondary structure can carry drugs to accurately target and enter M1 macrophages,and release drugs via the transition from hydrophobicity to hydrophilicity of nanomicelles under inflammatory stimulation inside the macrophages.

关键词： micelle release spheres

Super P and MoO_(2)/MoS_(2)co-doped gradient nanofiber membrane as multi-functional separator for lithium–sulfur batteries

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Rare Metals 2024年第9期43卷 4263-4273页

作者： Xin Liang Dong-Qing zhao Qian-Qian Huang Sheng Liang Li-Li Wang Lei Hu Ling-Li Liu Kun-Hong Hu Chong-Hai deng Sheng Cheng Er-Tao Zhu Hua-Xia deng School of Energy Materials and Chemical Engineering LIB Technology Center of Anhui ProvinceHefei UniversityHefei 230601China Instrumental Analysis Centre Hefei University of TechnologyHefei 230009China Hefei Youngy Energy Materials Co. Ltd.Hefei 230000China Department of Modern Mechanics University of Science and Technology of ChinaHefei 230026China

Lithium-sulfur battery is one of the most promising battery systems for industrialization due to its high theoretical specific capacity and high energy ***,the"shuttle effect"has restrained the advancement of lithium-sulfur *** this work,a gradient-structured nanofiber membrane with pure gelatin on one side and Super P-MoO_(2)/MoS_(2)-gelatin on the other side was created using a multi-step electrostatic spinning technique,which was applied for multi-functional separator for lithium-sulfur *** pure gelatin layer facing the anode side primarily homogenizes the lithium flux,whereas the Super P-MoO_(2)/MoS_(2)-gelatin layer facing the cathode side primarily adsorbs polysulfides by physical and chemical adsorption and enhancing polysulfide conversion *** findings demonstrate that even after 150 cycles at 0.2C,the lithium-sulfur battery can still sustain a discharge-specific capacity of 572.3 mAh·g^(-1).When used with Li||Li symmetric batteries,it has a cycle life of more than 1200 *** commercialization of lithium-sulfur batteries is given a fresh idea by this straightforward preparation technique.

关键词： MoO_(2)/MoS_(2) Nanofiber Membrane Li-S battery

Li-Rich Organosulfur Cathode with Boosted Kinetics for High-Energy Lithium-Sulfur Batteries

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Energy & Environmental Materials 2024年第4期7卷 118-125页

作者： Ting Ma Jiaojiao deng Yuxiao Lin Qinghua Liang Liang Hu Xiaohu Wang Jun Liu Xinsheng zhao Yinwei Li Ding Nan Xiaoliang Yu College of Chemistry and Chemical Engineering Inner Mongolia University Inner Mongolia Key Laboratory of Graphite and Graphene for Energy Storage and Coating School of Materials Science and Engineering Inner Mongolia University of Technology Shenzhen Key Laboratory on Power Battery Safety and Shenzhen Geim Graphene Center Tsinghua Shenzhen International Graduate School (SIGS) School of Physics and Electronic Engineering Jiangsu Normal University Key Laboratory of Rare Earth Ganjiang Innovation Academy Chinese Academy of Sciences Department of Mechanical Engineering Research Institute for Smart EnergyThe Hong Kong Polytechnic University

Organosulfur materials containing sulfur-sulfur bonds are an emerging class of high-capacity cathodes for lithium ***,it remains a great challenge to achieve rapid conversion reaction kinetics at practical testing conditions of high cathode mass loading and low electrolyte *** this study,a Li-rich pyrolyzed polyacrylonitrile/selenium disulfide（pPAN/Se2S3） composite cathode is synthesized by deep lithiation to address the above challenges.

关键词： Electrolytes

Genome-wide identification of the pectate lyase(PEL)gene family members in Malvaceae,and their contribution to cotton fiber quality

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Journal of Integrative Agriculture 2024年第10期23卷 3264-3282页

作者： Qian deng Zeyu Dong Zequan Chen Zhuolin Shi Ting zhao Xueying Guan Yan Hu Lei Fang Zhejiang Provincial Key Laboratory of Crop Genetic Resources the Advanced Seed InstituteCollege of Agriculture andBiotechnologyZhejiang UniversityHangzhou 300058China Hainan Institute Zhejiang UniversitySanya 572025China

Pectin is a major constituent of the plant cell *** lyase(PEL,EC 4.***.2.2)uses anti-β-elimination chemistry to cleave theα-1,4 glycosidic linkage in the homogalacturonan region of ***,limited information is available on the comprehensive and evolutionary analysis of PELs in the *** this study,we identified 597PEL genes from 10 Malvaceae *** and motif analyses revealed that these PELs are classified into six subfamilies:Clades I,II,III,IV,Va,and *** two largest subfamilies,Clades I and II,contained 237 and222 PEL members,*** members of Clades Va and Vb only contained four or five motifs,far fewer than the other *** duplication analysis showed that segmental duplication played a crucial role in the expansion of the PEL gene family in Gossypium *** PELs from Clades I,IV,Va,and Vb were expressed during the fiber elongation stage,but nearly all PEL genes from Clades II and III showed no expression in any of the investigated fiber developmental *** further performed single-gene haplotype association analysis in 2,*** accessions and 229 *** ***,14 PELs were significantly associated with fiber length and strength traits in *** with superior fiber quality,while only eight GhPEL genes were found to be significantly associated with fiber quality traits in *** findings provide important information for further evolutionary and functional research on the PEL gene family members and their potential use for fiber quality improvement in cotton.

关键词： Malvaceae pectate lyase(PEL) Gossypium species fiber quality

The biosynthesis of asiaticoside and madecassoside reveals tandem duplication-directed evolution of glycoside glycosyltransferases in the Apiales

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Plant Communications 2024年第10期5卷 166-179页

作者： Xiaoyang Han Jingyi zhao Hong Zhou Xuan Zhou Zixin deng Zhenhua Liu Yi Yu Department of Gastroenterology Zhongnan Hospital of Wuhan UniversityHubei Clinical Center and Key Laboratory of Intestinal and Colorectal DiseaseSchool of Pharmaceutical SciencesWuhan UniversityWuhan 430071China Joint Center for Single Cell Biology School of Agriculture and BiologyShanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory of Non-Food Biomass and Enzyme Technology Guangxi Academy of SciencesNanning 530007China

Certain plant species within the Apiales order accumulate triterpenoid saponins that feature a distinctive glucose-glucose-rhamnose(G-G-R)sugar chain attached at the C-28 position of the pentacyclic triterpene *** recently,the genomic basis underlying the biosynthesis and evolution of this sugar chain has remained *** this study,we identified two novel glycoside glycosyltransferases(GGTs)that can sequentially install the sugar chain’s second D-glucose and third L-rhamnose during the biosynthesis of asiaticoside and madecassoside,two representative G-G-R sugar chain-containing triterpenoid saponins produced by Centella *** assays revealed the remarkable substrate promiscuity of the two GGTs and the key residues crucial for sugar-donor selectivity of the glucosyltransferase and rhamnosyl*** further identified syntenic tandem gene duplicates of the two GGTs in the Apiaceae and Araliaceae families,suggesting a well-conserved genomic basis underlying sugar chain assembly that likely has evolved in the early ancestors of the Apiales ***,expression patterns of the two GGTs in pierced leaves of *** were found to be correlated with the production of asiaticoside and madecassoside,implying their involvement in host defense against herbivores and *** work sheds light on the biosynthesis and evolution of complex saponin sugars,paving the way for future engineering of diverse bioactive triterpenoids with unique glycoforms.

关键词： triterpenoid saponin glycoside glycosyltransferases biosynthesis asiaticoside madecassoside Centella asiatica

Effect of quantitative consciousness index on seizure parameters during electroconvulsive therapy in patients with major depressive disorder

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World Journal of Psychiatry 2024年第9期14卷 1375-1385页

作者： Bang-Shu zhao Bi deng Qi-Bin Chen Xiao Li You Yang Su Min Department of Anesthesiology The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400016China Department of Anesthesiology The First Clinical College of Chongqing Medical UniversityChongqing 400016China Department of Psychiatry The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400016China

BACKGROUND Electroconvulsive therapy(ECT)is both an effective treatment for patients with major depressive disorder(MDD)and a noxious *** some studies have explored the effect of sedation depth on seizure parameters in ECT,there is little research on the noxious stimulation response to *** this study,we used two electroencephalography(EEG)-derived indices,the quantitative consci-ousness(qCON)index and quantitative nociceptive(qNOX)index,to monitor sedation,hypnosis,and noxious stimulation response in patients with MDD undergoing acute *** Patients with MDD(n=24)underwent acute bilateral temporal ECT under propofol *** ECT,the patients were randomly divided into three groups according to qCON scores(qCON60-70,qCON50-60,and qCON40-50).Continuous qCON monitoring was performed 3 minutes before and during ECT,and the qCON,qNOX,vital signs,EEG seizure parameters,and complications during the recovery period were *** 24-item Hamilton Rating Scale for Depression,Zung’s Self-rating Depression Scale,and Montreal Cognitive Asse-ssment scores were evaluated before the first ECT session,after the fourth ECT session,and after the full course of *** A total of 193 ECT sessions were performed on 24 *** qCON index significantly affected the EEG seizure duration,peak mid-ictal amplitude,and maximum heart rate during ECT(P0.05).CONCLUSION Electrical stimulation at a qCON index of 60-70 resulted in better EEG seizure parameters without increasing complications in patients with MDD undergoing b

关键词： Electroconvulsive therapy Propofol Nociception Depression Electroencephalogram