COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2022
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IF 5.518
Yongqiang Wang,Mengdan Zhang,Jiamei Zhao,Chen Chen,Yingying Zhou,Xin Zheng,Conglu Zhang
The energy storage and upconversion effect of carbon quantum dots (CQDs) could improve the photocatalytic efficiency of materials. In this study, a visible-light-driven photocatalyst , CQDs-doped carbon nitride nanosheets composite (CNS/CQDs) was in-situ synthesized by the thermal stripping of carbon nitride bulk (CNB). The as-prepared CNS/CQDs photocatalyst was systematically characterized and applied to the removal of Meloxicam (Mel) in water. The results showed that the introduction of CQDs could improve the visible light utilization of the carbon nitride. Mel (50 mL, 10 mg L −1 ) was degraded by 99.60% in 45 min with CNS/CQDs (20 mg). The stability and recycling experiments showed that CNS/CQDs could maintain high photocatalytic activity under complex matrix and multiple cycles. This work will provide a new attempt to synthesize the CQDs doped photocatalytic materials for the effective removal of organic pollutants in water under visible light.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
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2024
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IF 6
Linna Song,Xiaohan Sun,Baohui Shi,Weiming Yang,Wen Ma
Condensed tannins are essential components in red wines, which not only contribute to their astringency effect but also determine wine quality. However, the evolution of tannins during vinification and wine aging remains unclear. Hence, this investigation analyzed the chemosensory characteristics of condensed tannins and their astringency perception in Marselan, Cabernet Sauvignon and MerlotCanalysis of condensed tannins and their astringency perception in Marselan, Cabernet Sauvignon and Merlotred wine during an industrial-scale winemaking procedure, via both non-targeted UPLC–Q-ToF and QDA techniques. The results indicated that Marselan exhibited the highest total tannins content, galloylation, prodelphinidins and astringency intensity among the three studied varieties. 13 tannins molecules were found to be the key molecule tannins (VIP>1) during Marselan aging evolution, whereas 14 and 15 molecule tannins were revealed as the key (VIP>1) in Cabernet Sauvignon and Merlot wines, respectively. Furthermore, the sensory results demonstrated that, after aging for 9 months, the astringency sub-quality of Merlot wine evolved at a slower rate than the other two. Additionally, astringency intensity was significantly positively ( p < 0.001) correlated with total tannins, mDP, and (E)G% for all three varieties, while astringency sub-quality was significantly negatively ( p < 0.001) correlated with total tannins and (E)G%, according to a correlation analysis of chemosensory metabolomic results. For Marselan, Cabernet Sauvignon, and Merlot, respectively, DP5-C, DP1-C, and the majority of key tannins (VIP>1) significantly adversely correlate with astringency sub-quality.
研究领域:
食品科学
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感官分析
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葡萄栽培学
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2021
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IF 4.539
Liang Xu,Xiao-Fang Wang,Bin Liu,Ting Sun,Xin Wang
The composites ferrous tungstate (FeWO 4 ) were fabricated as the sonocatalyst for degradation of meloxicam (MEL) in water. The composites are prepared carefully via hydrothermal reaction of sodium tungstate dehydrate and ferrous ammonium sulfate hexahydrate. The morphology of FeWO 4 were controlled successfully, by adjusting the acidity of the reaction solution (pH = 5, 6, 7, 8, 9). Multiple characterization results revealed that the obtained FeWO 4 shared the similar nano-microspheres structure, but with different BET surface area and energy gap. The sonocatalytic experiments showed that FeWO 4 nanomaterials with various synthetic pH values had different sonocatalytic performance on degradation of meloxicam (MEL), and FeWO 4 synthesized at pH 6 reaches maximum of 73.5% on degradation of MEL. This phenomenon was not only due to the moderate BET surface area (31.18 m 2 /g), moderate pore size distribution (10–30 nm) and moderate energy gap (1.73 eV) of FeWO 4 nano-microspheres, ·OH and holes also played a key role in the removal of MEL. The obtained catalyst was proved to be stable enough after four cycles. Our study demonstrates a novel finding, not reported previously, that FeWO 4 could be utilized as a promising sonocatalyst to degrade MEL by ultrasound-driven.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
MOLECULES
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2019
·Vol. 24
·期 20
·3798
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IF 3.06
Emmanuel Bresso,Diana Fernandez,Deisy X. Amora,Philippe Noel,Anne-Sophie Petitot,Maria-Eugênia Lisei de Sa,Erika V. S. Albuquerque,Etienne G. J. Danchin,Bernard Maigret,Natália F. Martins
Root-knot nematodes (RKN), from theMeloidogynegenus, have a worldwide distribution and cause severe economic damage to many life-sustaining crops. Because of their lack of specificity and danger to the environment, most chemical nematicides have been banned from use. Thus, there is a great need for new and safe compounds to control RKN. Such research involves identifying beforehand the nematode proteins essential to the invasion. Since G protein-coupled receptors GPCRs are the target of a large number of drugs, we have focused our research on the identification of putative nematode GPCRs such as those capable of controlling the movement of the parasite towards (or within) its host. A datamining procedure applied to the genome ofMeloidogyne incognitaallowed us to identify a GPCR, belonging to the neuropeptide GPCR family that can serve as a target to carry out a virtual screening campaign. We reconstructed a 3D model of this receptor by homology modeling and validated it through extensive molecular dynamics simulations. This model was used for large scale molecular dockings which produced a filtered limited set of putative antagonists for this GPCR. Preliminary experiments using these selected molecules allowed the identification of an active compound, namely C260-2124, from the ChemDiv provider, which can serve as a starting point for further investigations.Keywords:Meloidogyne incognita;homology modelling;molecular dynamics;virtual screening
研究领域:
植物保护
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生物信息学
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DOI
PubMed
高影响因子
FOOD CONTROL
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2023
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IF 6
Qingyong Zhu,Xin Zhang,Huimin Xu,Qin Qin,Xiaoe Chen,Qihe Chen,Zhengjie Liu
The qualities of Penaeus vannamei that are prone to spoilage have a significant impact on its economic profitability. To extend the shelf life of shrimp, this study formulated a novel composite preservative with pullulan and protoilludane sesquiterpene aryl esters (melleolides). Two melleolide compounds, namely armillarin and armillaripin, were identified using high-performance liquid chromatography-triple quadrupole time-of-flight mass spectrometry (HPLC–Q-TOF-MS/MS) analysis of the ethyl acetate extract of Floccularia luteovirens . The antibacterial activity of melleolides was investigated through the disc diffusion method, and it exhibited the most potent effect against methicillin-resistant Staphylococcus aureus (MRSA) among the tested bacteria, producing an inhibition zone diameter of 15.6 mm. The composite preservative displayed competitive inhibition of polyphenol oxidase, with an IC 50 value achieved at a melleolides content of 6.27%. Furthermore, the effects of the composite preservatives on shrimp quality were evaluated through sensory, colour, pH, TVB-N, APC, and TBARS assessments. The results indicated that S-PM8 treatment group inhibited the growth of the APC in shrimp from 8.98 log CFU/g (S–C) to 7.48 log CFU/g. The TVB-N content was maintained within 28.7 mg/100 g throughout the storage period. The content of TBARS was 0.97 mg MDA/kg at Day 12, which was significantly lower than that of the control group. Additionally, the composite preservatives substantially improved sensory scores and colour retention during storage. These findings demonstrate the potential of pullulan-melleolides composite preservative to extend the shelf life of P. vannamei .
研究领域:
食品科学
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微生物学
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化学
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产品关联
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
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2024
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IF 5.8
Dingyu Xu,Lifen Chen,Xin Liu,Jingwen Wang,Siyu Jiao,Xianchao Yao,Rihui Lin
This study aimed to prepare novel chitosan (CS)-based aerogels for efficient loading of hydrophilic chlorogenic acid (CGA) and to facilitate its sustained release in vivo. The mechanical properties and water permeability of the CS-based aerogels were enhanced by incorporating sodium alginate. Melonal sodium alginate CS (MSCS) was synthesised by crosslinking melonal with CS aerogel via a Schiff base reaction. MSCS possesses a three-dimensional porous structure, featuring abundant micropores and mesoporous distributions. Due to the addition of melonal, MSCS demonstrates environmental stability and moisture resistance, with a surface contact angle of 121°. Adsorption capacity tests revealed that MSCS exhibits high adsorption capacity for CGA, reaching 769.4 mg/g, with an adsorption efficiency of 76.94 %. Molecular dynamics simulation results indicate that the adsorption process is exothermic, with increased adsorption capacity at lower temperatures, and is a combination of physical and chemical adsorption. Through quantum chemistry calculations, we identified the adsorption sites of CGA on MSCS and the tendency of MSCS to donate electrons. The in vitro sustained-release experiments demonstrated continuous release of CGA for 48 h in both artificial gastric juice and intestinal fluid, with release rates of 34.26 % and 34.96 %, respectively.
研究领域:
材料科学
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药学
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化学工程
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生物技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）