JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2026
·
IF 6.2
Yao Wang,Junhua Qiu,Chengwei Wang,Ruiyu Yang,Fuyou Guo,Tian Li,Shili Li,Lei Yang,Wei Ding
Plant-derived terpenoids are essential secondary metabolites exhibiting broad-spectrum antibacterial properties. However, the bioactivities of terpenoids against Ralstonia solanacearum remain unexplored. Herein, the bioactivities of 30 terpenoids against R. solanacearum were assessed, and trans-anethole (TAN) was identified as a potent antibacterial agent with a minimum inhibitory concentration and minimum bactericidal concentration of 50 and 75 mg/L, respectively. TAN was low-toxic to silkworms, earthworms, seeds, and E. coli. Furthermore, TAN (>25 mg/L) significantly impeded the R. solanacearum growth, blocked ATP and exopolysaccharide (EPS) synthesis, caused DNA damage and cell rupture, and affected swimming motility and biofilm formation, and suppressed expressions of related genes. Compared with thiodiazole copper, and ethylicin, 100 mg/L TAN had a significantly greater control efficiency in both greenhouse and field tests. Importantly, TAN enhanced the abundance of the beneficial bacteria Bacillus and Sphingomonas. These findings highlight TAN as a potential bacterial wilt control agent.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Polymer Chemistry
·
2020
·Vol. 12
·期 3
·432-438
·
IF 5.342
Xin-Long Sha,Li Yuan,Guozheng Liang,Aijuan Gu
Using eco-friendly methods to prepare high-performance thermosetting resins is of great significance for cutting-edge industrial fields and sustainable development. In this article, using isoeugenol and vanillin as the phenol source, 3-aminophenyl acetylene as the amine source, the propylene-terminated benzoxazine monomer IE-apa and aldehyde-terminated benzoxazine monomer V-apa were synthesized with a green strategy in the whole synthesis and purification processes. After curing the two monomers, two biobased benzoxazine resins poly(IE-apa) and poly(V-apa) were obtained, and their comprehensive properties were investigated. The results show that poly(IE-apa) and poly(V-apa) have not only high glass transition temperatures (293 °C and 304 °C), but also high storage moduli (3.89 GPa and 3.65 GPa), initial thermal decomposition temperatures (395 °C and 393 °C) and tensile strengths (66.7 ± 2.2 MPa and 59.0 ± 3.2 MPa), and both resins exhibit the best overall performance among all biobased benzoxazine resins from mono-phenols. The high performance of the resins is attributed to the specific structure of the benzoxazine resins, that is, the synergistic interaction between alkynyl and propylene or aldehyde groups.
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2020
·Vol. 10
·期 14
·8558-8567
·
IF 3.119
Jindong Wang,Wenzhi Li,Huizhen Wang,Ajibola Temitope Ogunbiyi,Xiaomeng Dou,Qiaozhi Ma
To improve the utilization of lignin, much effort has been devoted to lignin depolymerization with the aim to decrease waste and enhance profitability. Here, a dual property (acid and base) catalyst, namely S2O82−–K2O/TiO2, was carefully researched. Upon loading S2O82− and K2O onto TiO2, acid and base sites emerged, and S2O82− and K2O mutually enhanced the acid and base strengths of the catalyst enormously; this indeed facilitated lignin depolymerization. Under appropriate conditions, the yields of liquid product, petroleum ether soluble (PE-soluble) product and total monomer products were 83.76%, 50.4% and 28.96%, respectively. The constituents of the PE-soluble fraction, which are mainly monomers and dimers, can be used as liquid fuels or additives. In addition, after the catalyst was modified by Ni, better results were obtained. Surprisingly, it was found that the Ni enhanced not only the hydrogenation capacity but also the acidity. The highest high heating value (HHV) of the liquid product (33.6 MJ kg−1) was obtained, and the yield of PE-soluble product increased from 50.4 to 56.4%. The product can be utilized as a fuel additive or be converted to bio-fuel. This catalysis system has significant potential in the conversion of lignin to bio-fuel.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Xing Zhang,Jingfeng Wu,Tian Li,Chengzhi Zhang,Lingjun Zhu,Shurong Wang
Hydrodeoxygenation (HDO) of lignin-derived bio-oil offers a promising route for the production of advanced biofuels. However, the conventional HDO of lignin-derived bio-oil faces serious problems, such as low hydrocarbon yield and easy deactivation of catalysts. Herein, a novel reaction system consisting of a highly stable bifunctional catalyst (i.e., Ni−WO x /NiAl 2 O 4 ) and a dodecane solvent was developed for the HDO of lignin-derived phenolics. The Ni 0 species, derived from NiWO 4 precursors on the NiAl 2 O 4 , were of small crystallite size and high dispersion, together with the strong oxophilicity of W, thereby exhibiting high activity. The use of a highly stable NiAl 2 O 4 spinel support and the replacement of common solid acid with more stable WO x for the cleavage of C O bond accounted for excellent stability. The optimized 10Ni−15WO x /NiAl 2 O 4 exhibited a high guaiacol conversion of 97.8% with a high cycloalkane yield of 83.8% under the optimum conditions (250 °C, 5 MPa H 2 , and 4 h). Cycloalkanes with a high yield over 90% were also obtained by the HDO of other complex lignin-derived compounds. More importantly, the catalyst always retained its initial activity for the HDO of guaiacol in five runs, with negligible coke formation. Subsequently, the HDO behavior of the bio-oil obtained from walnut shell pyrolysis was also studied. The relative content of cycloalkanes in the products reached 44.3% after the reaction. This study highlights the prospect of a highly stable catalyst consisting of hydrogenation metal and oxophilic promoter, and dodecane solvent to enable efficient production of cycloalkanes from the HDO of lignin-derived phenolics.
✓ 已验证
产品关联
DOI
高影响因子
FOOD RESEARCH INTERNATIONAL
·
2019
·
IF 3.579
Zhihui Feng,Ming Li,Yifan Li,Xiaochun Wan,Xiaogen Yang
The orchid-like odor of a tea infusion is regarded as a noble aroma and an essential sensory attribute for certain premium teas. Such tea leaves are difficult to make and the quality is not always reproducible. This study is focused on the molecular sensory basis of the orchid-like attribute in tea brews. The aroma is defined as jasmine- and magnolia-like floral notes with a fruity undertone and found to be closely related to the flower scent of the orchid Cymbidium faberi Rolfe (hui lan) by a sensory panel. Gas chromatography mass spectrometry (GC-MS) and aroma extract dilution analysis revealed that the key contributor was (Z)-methyl epijasmonate (epi-MeJA), which was also one of the main odor compounds in the flower scent of C. faberi and in the infusions of selected high-quality teas. Concentration of epi-MeJA was ranging from 0.09 to 2.2 µg/g in the oolong and green tea leaves.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2019
·
IF 4.561
Rui Wang,Xing Hu,Junhui Pan,Guowen Zhang,Deming Gong
Isoeugenol , a natural phenolic compound in plant essential oils, is known to have many biological and pharmacological properties . In the present work, the interaction of isoeugenol with calf thymus DNA (ctDNA) and its protective effect on DNA oxidative damage were investigated by multispectroscopic techniques, viscosity measurements, gel electrophoresis studies and molecular simulation. Analyses of ultraviolet-visible (UV–vis) absorption and fluorescence spectra indicated that isoeugenol could bind to ctDNA with a binding constant on the order of 10 3 L mol −1 , which was mainly driven by hydrogen bonding and van der Waals forces . The results from the viscosity measurements, competitive displacement studies and circular dichroism (CD) analysis indicated that the binding of isoeugenol to ctDNA was in the groove mode and that the A–T base pairs in the minor grooves of ctDNA were the main binding sites for isoeugenol, which was supported by molecular docking analyses. In addition, isoeugenol was found to show a protective effect against hydroxyl-induced DNA damage, which may be explained by its good antioxidant activity . These findings may improve the understanding of the mechanism of interaction between isoeugenol and ctDNA and provide a theoretical basis for the development of isoeugenol in the food and drug industry.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Zhejiang University-SCIENCE B
·
2019
·
IF 1.879
Zhi-hao Tao,Chang Li,Xiao-fei Xu,Yuan-jiang Pan
Acrolein, known as one of the most common reactive carbonyl species, is a toxic small molecule affecting human health in daily life. This study is focused on the scavenging abilities and mechanism of ferulic acid and some other phenolic acids against acrolein. Among the 13 phenolic compounds investigated, ferulic acid was found to have the highest efficiency in scavenging acrolein under physiological conditions. Ferulic acid remained at (3.04±1.89)% and acrolein remained at (29.51±4.44)% after being incubated with each other for 24 h. The molecular mechanism of the detoxifying process was also studied. Detoxifying products, namely 2-methoxy-4-vinylphenol (product 21 ) and 5-(4-hydroxy-3-methoxyphenyl)pent-4-enal (product 22 ), were identified though nuclear magnetic resonance (NMR) and gas chromatography-mass spectrometry (GC-MS), after the scavenging process. Ferulic acid showed significant activity in scavenging acrolein under physiological conditions. This study indicates a new method for inhibiting damage from acrolein.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ChemSusChem
·
2018
·Vol. 12
·期 4
·944-954
·
IF 7.411
Shi Qiu,Xuan Guo,Yong Huang,Yunming Fang,Tianwei Tan
Graphical Lignin first : A flexible lignin-first biorefinery could be developed by task-specific catalyst design for hemicellulose retention or feedstock extension. Mo x C/carbon nanotube (CNT) is found to be a promising catalyst for the retention of hemicellulose by cleavage of the bonds between lignin and carbohydrates with high selectivity. Ru/CMK-3 achieves the extension of the feedstock for the lignin-first biorefinery from hardwood to softwood. A catalytic reductive fractionation method for lignocellulosic biomass, termed lignin-first biorefinery, has emerged, which emphasises preferential depolymerization of the protolignin. However, in most studies, the lignin-first biorefinery is only effective for hardwood that has a high syringyl/guaiacol (S/G) ratio of lignin building blocks, and the degradation of hemicellulose also takes place simultaneously to a certain degree. In this study, two task-specific catalysts were developed to realize hemicellulose retention and feedstock extension through the development of an objective performance–structure relationship. It is found that Mo x C/carbon nanotube (CNT) is highly selective in the cleavage of bonds between carbohydrates and lignin and ether bonds in lignin during the catalytic reductive fractionation of hardwood, leading to a carbohydrate (both cellulose and hemicellulose) retention degree in the solid product close to the theoretical maximum and a delignification degree as high as 98.1 %. Ru/CMK-3 is demonstrated to be effective in the catalytic reductive fractionation of softwood and grass, resulting from its weak acidity and high mesoporosity.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHINESE CHEMICAL LETTERS
·
2015
·
IF 1.587
Xin-Ping Ouyang,Yun Yang,Guo-Dian Zhu,Xue-Qing Qiu
The lack of suitable lignin model compound limits the understanding of the characteristics of lignin, and hence hinders the efficient utilization of this kind of bioresource. A tetramer phenolic lignin model compound composed of 5-5, α - O -4 and β -5 linkages was prepared by a two-step of free radical reaction with hydrogen peroxide/horseradish peroxidase and S 2 O 8 2− /Fe 2+ as the initiator. Compared with enzymatic process, this synthetic process gives a higher yield of 33.8% within a shorter time. HRMS and 13 C NMR spectroscopy show that synthesized model compound contains phenylpropane structure linked by 5-5, α - O -4 and β -5 bonds, which can mimic some chemical characteristics of lignin.
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2017
·
IF 5.951
Lujiang Xu,Qian Yao,Ying Zhang,Yao Fu
Due to the irregular polymeric structure and carbon based inactive property, lignin valorization is very difficult. In this study we proposed a new route for lignin valorization by which aromatic amines can be directly produced from lignin by ex situ catalytic fast pyrolysis with ammonia over zeolite catalysts. Meanwhile, the obtained pyrolytic biochar can be activated to produce high surface area N-doped carbon for electrochemical application. Wheat straw lignin served as feed to optimize the pyrolysis conditions. MCM-41, β-zeolite, HZSM-5, HY, ZnO/HZSM-5, and ZnO/HY were screened, and ZnO/HZSM-5 (2 wt % Zn, Si/Al = 50) showed the optimal reactivity for producing aromatic amines due to the desired pore structure and acidity. Temperature, residence time, and ammonia content in the carrier gas displayed significant effects on the product distribution. The maximum yield of aromatic amines was obtained at moderate temperatures around 600 °C, 0.57 s, and 75% ammonia in the carrier gas. Under the optimized conditions, the total carbon yields of pyrolytic bio-oil and aromatic amines were 9.8% and 5.6%, respectively. The selectivity of aniline in the aromatic amines was up to 87.3%. Moreover, the pyrolysis byproduct, biochar, was further activated by KOH at 800 °C under ammonia atmosphere for producing N-doped carbon with high surface area. The pyrolytic biochar and N-doped carbon were characterized by elemental analysis, SEM, XRD, nitrogen adsorption–desorption, and XPS. Cyclic voltammetry (CV) and galvanostatic charge–discharge were employed to investigate the electrochemical performance of pyrolytic biochar and N-doped carbon. The specific capacitance of N-doped carbon reached about 128.4 F g–1.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ASIA-PACIFIC ENTOMOLOGY
·
2016
·
IF 0.824
Yan-chen Wang,Peng Li,De-fu Chi
To utilize plant volatiles in the monitoring and biological control of Tenebrio molitor L., electroantennogramography (EAG), Y-tube olfactometry and wind tunnel bioassays were conducted to test the electrophysiological and behavioral responses of T. molitor to nine individual volatiles and five essential oils (compounded volatiles). The aim of this study was to select effective plant compounds that could be used in the development of semi-chemical based push–pull methods for the control of this harmful stored product pest. T. molitor displayed strong EAG responses to cis-3-hexenol, isoeugenol, α-pinene, turpentine oil, eucalyptus oil and peppermint essential oil. Y-tube olfactometry assays indicated that peppermint essential oil showed greater luring effects on adult T. molitor than the control. Cis-3-hexenol elicited strong repellent effects on adult T. molitor , and wind tunnel assays indicated that cis-3-hexenol showed strong repellent effects on adult T. molitor . Peppermint essential oil showed greater luring effects than the control. These results provide a basis to further the development of T. molitor luring and repellent agents.
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2017
·
IF 4.162
Shuyao Huang,Jianqiao Xu,Jiayi Wu,Haojia Hong,Guosheng Chen,Ruifen Jiang,Fang Zhu,Yuan Liu,Gangfeng Ouyang
The concentration of five rapidly metabolized anesthetics in living tilapias was determined in this study, by the presented method coupling in vivo solid phase microextraction (SPME) to gas chromatography-mass spectrometry (GC-MS), which was the first time that in vivo sampling method was adapted in detecting the anesthetic residue in the living aquatic product. The analytical performance of the developed method was evaluated in homogenized tilapia dorsal muscle, and the results demonstrated that the present method possessed low detection limits 1.7–9.4 ng g −1 ), wide linear ranges (10 or 30–5000 ng g −1 ), and satisfactory reproducibility (relative standard deviations no more than 8.1% and 10.8% for inter-fiber and intra-fiber assays, respectively). Standard curves were established in homogenized tilapia dorsal muscle for calibrating in vivo SPME in living tilapias. And the concentrations determined by in vivo SPME were close to those determined by the liquid extraction. By using the present method, one anesthetic residue was detected above the detection limit in tilapias from the local markets. Comparing to traditional methods, the present one exhibited superior time-efficiency and cost performance, as the extraction time was only ten minutes, which was short to successfully avoid the possible loss of analytes caused by elimination and sample storage. In addition, owing to the time-efficiency of the present method, the elimination of the anesthetics in tilapias was traced successfully in the laboratory.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）