FOOD RESEARCH INTERNATIONAL
·
2026
·
IF 8.8
Jing Wang,Jiaqi He,Silei Bai,Yixiong Wang,Hengbin Yao,Xuehui Liu,Junhui He,Anhong Liu,Chao Wang,Zhonghua Liu,Jianan Huang
Fresh leaves from seven regions were processed under identical conditions. • Processing reshaped aroma composition and amplified regional differences. • OAV and multivariate analysis identified 17 region-specific odorants. • Molecular docking suggested different receptor binding capacities among key odorants. Whether standardized tea processing homogenizes regional raw material differences or reconstructs them into distinct aroma profiles of raw Anhua dark tea (RADT) remains unclear. In this study, fresh leaves from seven regions were processed under identical manufacturing conditions to separate the effects of raw material origin from manufacturing process. Sensory evaluation showed that standardized processing did not eliminate regional aroma differences; instead, the resulting tea infusions retained distinct aroma attributes across regions, including roasty/smoky, stale/woody, floral, fruity, and green/fatty notes. GC-O/MS and quantitative analysis identified 48 odorants in fresh leaves and 82 odorants in RADT infusions, indicating that processing substantially reshaped the aroma composition. Alcohols, aldehydes, and terpenoids derived from fresh leaves generally decreased, whereas processing associated acids, phenols, lactones, and heterocyclics increased. Multivariate analysis identified 45 processing responsive odorants, including newly formed heterocyclics, ( E , E )-2,4-heptadienal, and ( E )- β -ionone. By integrating odor activity value with multivariate discrimination, 17 regional key odorants were identified, demonstrating that standardized processing reconfigured regional raw material differences into distinct aroma-active compound combinations rather than homogenizing them. Molecular docking revealed different predicted binding capacities between representative key odorants and selected olfactory receptors, with cedrol and ( E )- β -ionone showing stronger predicted receptor interactions than smaller linear aldehydes, suggesting that regional aroma differences in RADT may also involve receptor level recognition. Overall, these findings reveal that standardized processing acts as a transformative filter that reshapes regional raw material differences into distinct aroma profiles in RADT. Download: Download high-res image (184KB) Download: Download full-size image
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Small
·
2026
·
IF 11.8
Jianglin Tu,Hang Zhao,Zhefei Pan,Liang An,Xun Zhu,Rong Chen,Qiang Liao
Electrocatalytic nitrogen reduction is promising for sustainable ammonia production, but is hindered by a high protonation energy barrier and severe competition from the hydrogen evolution reaction. Although PdBi single-atom alloy has been demonstrated to be an efficient electrocatalyst for electrochemical nitrate reduction to ammonia, the underlying mechanism of the electrocatalytic nitrogen reduction reaction over this type of catalyst remains unclear. Herein, a PdBi single-atom alloy is prepared by anchoring Bi single atoms onto thin Pd nanosheets and applied for the electrocatalytic nitrogen reduction reaction. The induced electronic coupling between Bi and Pd atoms optimizes charge distribution, thereby enhancing N 2 adsorption-activation and decreasing the free-energy barrier of the rate-determining step of *N 2 → *NNH from 0.71 to 0.61 eV. The optimized PdBi 10 single-atom alloy exhibits superior electrocatalytic activity toward the electrocatalytic nitrogen reduction reaction, delivering an ammonia yield of 46.9 µg h −1 mg −1 with a Faradaic efficiency of 13.3% at −0.2 V (vs. RHE), along with excellent long-term stability. This work provides mechanistic insights and design principles of engineering single-atom alloy electrocatalysts for efficient and durable electrocatalytic nitrogen reduction reaction to ammonia.
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高影响因子
Foods
·
2026
·Vol. 15
·期 16
·2772
·
IF 6
Guanru Yi,Shaoyu Lv,Longwei Fu,Zhixiang Xu,Shiyong Wang,Longhua Xu
Enrofloxacin residues in foods pose potential risks to food safety and public health, creating demand for rapid, sensitive, and matrix-compatible screening methods. All-inorganic CsPbBr3quantum dots (QDs) are promising fluorescent probes because of their strong photoluminescence, but their poor stability in polar media greatly restricts their practical use in food analysis. Herein, ZIF-8-confined and APTES-passivated CsPbBr3QDs were developed as an ethanol-compatible fluorescent sensor for enrofloxacin detection in foods. Unlike reported CsPbBr3@ZIF-8 systems mainly used for metal-ion sensing in aqueous media, this work integrates ZIF-8-confined in-situ growth with APTES-assisted silane passivation to improve the stability and applicability of CsPbBr3QDs in ethanol-based food extracts. ZIF-8 provided a confined microenvironment, while the APTES-derived silane layer further enhanced fluorescence stability. The sensor exhibited a distinct turn-off fluorescence response toward enrofloxacin, with a linear range of 0.1–25.0 mg·L−1and a limit of detection of 0.058 mg·L−1, mainly attributed to electron transfer with CsPbBr3@ZIF-8. The method was successfully applied to honey, milk, fish, and shrimp samples, achieving recoveries of 85.2–106.8%. Results obtained for aquatic products showed no significant difference from HPLC analysis (p> 0.05), demonstrating the potential of this sensor for rapid enrofloxacin residue screening in complex food matrices.
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Frontiers in Chemistry
·
2026
·
IF 5.3
Qingfu Wang,Jiaming Zhao,Zening Wang,Liuke Zhang,Lei Li,Yibo Ning,Zhipeng Jing,Pengfei Yang,Yongzhen Zhao,Changtong Lu
To investigate the effects of various metal salt solutions on the extraction efficiency of Lysimachia foenum-graecum Hance essential oil (LHEO), steam distillation coupled with comprehensive two-dimensional gas chromatography mass spectrometry was applied for volatile characterization. Single-factor experiments and orthogonal experimental design were adopted to evaluate four metal salts (FeCl 3 , MgCl 2 , MnCl 2 , ZnCl 2 ). All four metal salts significantly improved essential oil yield with a maximum increase of 106%, and the optimal intensification condition was determined as 1.2% ZnCl 2 with 24 h extraction. A total of 235 compounds were detected in five samples. Orthogonal partial least squares-discriminant analysis revealed obvious sample differences based on 72 common volatiles, and 17 differential compounds including furfural, neophytadiene, phytol, isophytol, α-terpineol, linalool and geraniol were identified according to VIP scores. The findings clarify the influences of different metal salt solutions on LHEO volatile profiles and provide theoretical basis and practical reference for extraction process optimization and quality control.
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Foods
·
2026
·Vol. 15
·期 17
·3002
·
IF 6
Min Li,Yulin Wang,Huajuan Yin,Xu Jing,Yunlong Li
Triazole fungicides (TFs) are widely used in cereal production due to their potent fungicidal activity and broad-spectrum efficacy. Nonetheless, residues of TFs in food products may pose risks to food safety and human health. Therefore, the development of efficient and environmentally friendly sample preparation methods is paramount for the reliable determination of TFs. Herein, a novel green solvent-based dispersive liquid–liquid microextraction method coupled with high-performance liquid chromatography (DLLME-HPLC) was developed for the determination of TFs in cereal samples. The prepared magnetic deep eutectic solvents (MDESs), composed of nonanoic acid and ferric hydroxide, served as green, magnetically responsive extraction solvents, enabling rapid magnetic separation without centrifugation. Four bio-based solvents (BBSs) were investigated as green dispersive solvents to facilitate the dispersion of MDESs and replace conventional toxic organic dispersants, thereby further enhancing the environmental sustainability of the extraction procedure. Owing to the combined effects of hydrophobic interactions, hydrogen-bonding networks, and magnetic responsiveness, the proposed method achieved efficient extraction and rapid phase separation while minimizing solvent consumption and operational complexity. The greenness of the method was evaluated using multiple green analytical chemistry metrics, confirming its low environmental impact, reduced waste generation, and improved operational safety compared with conventional DLLME procedures. Under optimized conditions, the method was successfully applied to determine TFs in rice, wheat, corn, buckwheat, and oat samples, achieving recoveries ranging from 75.0% to 101.9% and relative standard deviations of 1.6–4.8%. The developed DLLME method provides a rapid, sensitive, and environmentally friendly strategy for cereal pesticide residue analysis and expands the application of MDESs and BBSs in green sample preparation.
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LANGMUIR
·
2026
·Vol. 42
·期 35
·25876-25888
·
IF 4.4
Pan Feng,Wang Zihao,Yu Chuansong,Wu Guilin,Hu Jiaman,Ma Fayun,Ma Yue,Yang Ronghao,Luo Yongyue,Feng Jin,Liu Jize,Chen Zhenming
High-filling epoxy composites possess indispensable and
pivotal
performance in structural materials and functional devices; However,
owing to their intrinsic brittleness and inevitable interface defects,
potential stress concentration and structural damage may result in
unacceptable losses. Here, a nanopowder-reinforced thixotropic interfacial
design strategy was proposed, in which different morphologies of nanosized
calcium carbonate were used to reinforce guanidinoacetic acid-modified
polyborosiloxane (GPBS), which was then introduced into the organic–inorganic
interface of epoxy composites. Owing to the frequency-dependent O→B
dynamic bonds and guanidyl-carboxylate structure, the obtained GPBS
exhibits an enhanced shear-thickening behavior, with its storage modulus
( G ′ ) increasing sharply from 34.89 Pa at 0.1
Hz to 69.87 MPa at 100 Hz (an increase of 20,026.51 times). As a result,
the corresponding epoxy composites exhibited improved mechanical properties
(a 385.6% increase in tensile stress) and impact resistance performance
(a force attenuation rate of up to 80%). Meanwhile, SrAl 2 O 4 :Eu 2+ , Dy 3+ was incorporated into
the composites for stress visualization, and a machine learning-assisted
analysis system was developed for signal analysis. This study provides
an insight into high-filling functional epoxy composites, holding
great application potential in intelligent protection engineering.
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高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Xiao Li,Xuanwei Li,Caixia Yan,Yaokun Xia,Keke Huang,Jia Chen
Alkyl carboxylic acid–HFIP SUPRAS was developed as an ideal extractant for HF-LPME. • Reversed micellar SUPRAS forms with low HFIP and is stable at low salt levels. • Hollow fiber and restricted-access SUPRAS synergistically reduce matrix effects. • Multiclass antiarrhythmic drugs in human plasma are detected by LC-MS/MS. • Low solvent/sample consumption and an AGREEprep score of 0.5 ensure eco-friendliness. An alkyl carboxylic acid–hexafluoroisopropanol (HFIP) supramolecular solvent (SUPRAS) was developed as a restricted-access solvent for hollow fiber liquid-phase microextraction (HF-LPME) and applied to the determination of seven antiarrhythmic drugs (mexiletine, propranolol, diltiazem, amlodipine, propafenone, verapamil, and amiodarone) in human plasma. SUPRAS formation required only a low HFIP dosage (<10%, v /v for alkyl carboxylic acid ≤4%, w / v ) and was minimally affected by low ionic strength (NaCl <50 mM) or low organic solvent content (methanol <5%, v /v). The SUPRAS consisted of reversed micellar aggregates with hydrophobic outer surfaces and hydrophilic inner cavities. The SUPRAS exhibited restricted-access behavior, efficiently excluding macromolecular proteins (extraction efficiency <18.3%, solubility <4.5 mg mL −1 ) via the synergistic effects of protein denaturation/flocculation induced by HFIP and octanoic acid and size exclusion by the SUPRAS matrix. After systematic optimization, the proposed method coupled with high-performance liquid chromatography-tandem mass spectrometry demonstrated acceptable analytical performance. Satisfactory linearity was achieved, with correlation coefficients ranging from 0.9903 to 0.9997. Method limits of detection (S/N = 3) ranged from 0.01 to 0.10 μg L −1 , while method limits of quantification (S/ N = 10) were 0.03–0.33 μg L −1 . Acceptable recoveries were obtained for spiked samples (86.5–126.6%), with only two analytes slightly exceeding 130% at the low concentration level, and intra- and inter-day precisions were below 19.3%. Owing to the combined microfiltration capability of the hollow fiber and the restricted-access properties of the SUPRAS, the method exhibited manageable matrix effects (70.6–132.5%) and eliminated the need for a separate protein precipitation step, while consuming only 25 μL of SUPRAS per extraction. Greenness assessment using AGREEprep software yielded a score of 0.5, confirming satisfactory eco-friendliness and sustainability. This SUPRAS-HF-LPME method is simple, efficient, and environmentally benign, serving as a promising pretreatment and quantification strategy for antiarrhythmic drugs in complex human plasma matrices. Download: Download high-res image (265KB) Download: Download full-size image
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JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Hailong Qiao,Yurong Wang,Qiang Chen,Pingxia Guo,Xiao Liu,Meirong Cai,Feng Guo
Environmentally benign water-based lubricants are attracting increasing attention as alternatives to conventional oil-based lubricants that may cause environmental pollution. Herein, three protic poly(ionic liquid)s (PPILs) are synthesized by combining a copolymeric cation with carboxylate anions of different alkyl chain lengths. The PPILs are employed as additives in aqueous lubricants, and their viscosity-enhancing capability and tribological performance are systematically evaluated. Quartz crystal microbalance (QCM), electrical contact resistance (ECR), X-ray photoelectron spectroscopy (XPS), and time-of-flight secondary ion mass spectrometry (TOF-SIMS) are used to elucidate the lubrication mechanism. The results demonstrate that PPILs significantly improve the viscosity, corrosion resistance, and tribological properties of water-based lubricants. Notably, the kinematic viscosity of a 6% PPD-Oa aqueous solution increases by two orders of magnitude compared with deionized water, while the corresponding wear volume and coefficient of friction are reduced by approximately 77% and 70%, respectively. Mechanistic investigations indicate that interfacial adsorption and friction-induced chemical processes jointly generate a protective layer at the sliding interface, thereby imparting excellent lubricity and load-bearing capability to the lubricant. Moreover, the three sulfur-free and halogen-free PPILs represent environmentally benign additives with strong potential for application in metalworking fluids and hydraulic systems.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Fenglong Dai,Tingyuan Wang,Yanan Liu,Xiaocui Wei,Fu Zhao,Enshen Shi,Yigui Du,Chunjia Wang,Shijie Liu,Chunyang Fan,Yuhan Wang,Zhongyi Jiang
Mixed-dimensional COF membrane is constructed with 2D COF nanosheet and 1D COF nanotube. • 2D COF nanosheets served as the building block to provide in-plane mass transfer channels • 1D COF nanotube acts as intercalator to construct additional interlayer mass transfer channels. • The membrane exhibits high permeance for solvents and high rejection for dyes. • The membrane shows stable separation performance in long-term test. Covalent organic framework (COF) membrane holds significant potential in organic solvent nanofiltration (OSN), and the regulation of mass transport channels in covalent organic framework nanosheets (CON) assembled membrane is the key for the high separation performance. Herein, we utilized two-dimensional (2D) CON and one-dimensional (1D) COF nanotube (COF-NT) to prepare mixed-dimensional CON/COF-NT membrane for fast OSN. 2D CON served as the building block of the membrane to provide in-plane mass transfer channels and 1D COF-NT acted as intercalator to construct additional interlayer mass transfer channels, thus constructing the stable mixed-dimensional channels to enhance the membrane permeance while ensuring its high selectivity. As a result, CON/COF-NT membrane exhibited high permeance of 293 L m −2 h −1 bar −1 , 354 L m −2 h −1 bar −1 and 366 L m −2 h −1 bar −1 for water, acetone and acetonitrile, respectively, while maintaining high rejection rates of 96.0%, 98.6% and 100% for Methyl blue, Congo red and Alcian blue 8GX, respectively. Furthermore, compared with using 1D cellulose nanofiber as the intercalator, CON/COF-NT membrane maintained more stable water permeance with transmembrane pressure ranging from 0.5 bar to 3.0 bar, and separation performance for the 7-day long-term test. This study provides a novel approach to regulating the mass transport channels in COF membrane to achieve fast OSN. Mixed-dimensional COF membrane is prepared using two-dimensional COF nanosheet and one-dimensional COF nanotube as the building block to provide in-plane mass transfer channels and intercalator to construct additional interlayer mass transfer channels, respectively, leading to fast organic solvent nanofiltration. Download: Download high-res image (161KB) Download: Download full-size image
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TRIBOLOGY LETTERS
·
2026
·Vol. 74
·期 2
·34
·
IF 3.5
Yang Jing,Liu Xiao,Chen Qiang,Guo Pingxia,Feng Kai,Cai Meirong
As global environmental standards grow increasingly strict, developing eco-friendly, high-efficiency water-based lubrication additives has become a pivotal focus in tribology. In this work, three novel heterocycle-, phosphorus-, and sulfur-free protic ionic liquids (PILs), namely EDG-HA, EDG-OA, and EDG-LA, were successfully synthesized and employed as additives in aqueous lubricant systems with the objective of alleviating the environmental contamination and biological toxicity problems related to conventional lubricant additives. A systematic evaluation of the PILs revealed that lubricants blended with the additives demonstrate significantly superior corrosion protection and lubricating performance when compared to pure water. Specifically, the 1% EDG-LA lubricating solution reduced the friction coefficient (COF) and wear volume (WV) by approximately 69.3% and 94.5%, respectively. By combining quartz crystal microbalance (QCM) adsorption tests and X-ray photoelectron spectroscopy (XPS) analysis, the lubrication mechanisms were clarified: PILs form robust physical adsorption and tribo-chemical reaction film on metal friction pairs, effectively preventing direct metal-to-metal contact. The current research promotes the development of water-soluble additives with potential eco-friendly and high-efficiency through a novel perspective. Graphical
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Li Zhou,Zetao Kang,Yifan Wang,Jiajia Gao,Kuanjun Zhang,Lei Zhao,Cheng Zhong,Dianlin Wang,Lei Xie,Jingyi Wang
Hypothesis Liquid-infused surfaces (LISs) have drawn considerable attention for their exceptional self-cleaning and antifouling properties. The interaction forces between the infusing lubricant and the substrate surface play a pivotal role in determining LIS stability and performance. However, there is a lack of directly measured intermolecular forces as quantitative experimental evidence to determine the contribution of lubricant chemistry in different environments at the molecular scale. Experiments In this study, the interaction forces of diverse functional groups representing typical infusing lubricants with polydimethylsiloxane (PDMS) and phenyltriethoxysilane (PTES) surfaces were directly measured using atomic force microscopy in air and in aqueous solution. Findings The force measurement results in air indicated that the adhesion of the functional groups was larger on PTES compared to PDMS, and the adhesion was primarily determined by van der Waals interaction. In aqueous solution, the adhesion on PTES became lower than that on PDMS across almost all the functional groups, except for the C C. This reversal could be attributed to the enhanced electrostatic repulsion between functional groups and PTES, as PTES carried more negative charges than PDMS. The large adhesion for C C on PTES measured in aqueous solution could be due to the effective π interactions between C C and the benzene ring on PTES. The force measurement results were further supported by molecular dynamics simulations, suggesting that the adhesions between lubricants and substrate surfaces were predominantly determined by the intermolecular interactions. The measured adhesion forces had a positive correlation with the lubricant retention as a higher adhesion force resulted in a lower reduction ratio of drop sliding velocity after air and water shearing. Notably, the n-octanoic acid ( COOH) exhibited the highest adhesion and the greatest resistance to shear-induced loss on PDMS both in air and under water. While 1-octene ( C C) exhibited the highest stability on PTES in an aqueous environment. This work established a molecular-level design framework for engineering robust LIS systems, offering practical guidelines for selecting lubricants suited to specific substrate surfaces. Download: Download high-res image (116KB) Download: Download full-size image
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Food Bioscience
·
2026
·
IF 6.2
Qisijing Liu,Zijia Song,Yaya Wang,Binying Fu,Shijie Li,Shuo Wang
This study investigated how heat, mild pressurization, and lactose jointly regulate the structure and IgG-recognized antigenicity of α-lactalbumin (α-LA). An indirect competitive enzyme-linked immunosorbent assay (icELISA) was developed to quantitatively monitor α-LA immunoreactivity after thermal, pressure-assisted, and lactose treatments. Structural changes were characterized by sodium dodecyl sulfate–polyacrylamide gel electrophoresis, intrinsic fluorescence spectroscopy, free sulfhydryl analysis, scanning electron microscopy, OPA-reactive amino-group analysis, Maillard-related optical indices, and molecular docking. Heat and mild pressurization synergistically reduced α-LA antibody recognition under the tested conditions. Lactose showed a condition-dependent dual effect: under mild heating, it helped preserve α-LA immunoreactivity, whereas under high-temperature and pressure-assisted conditions, this protective effect was lost. The decreased OPA-reactive amino-group levels and increased A294/A420 values in the α-LA/lactose system confirmed enhanced Maillard reaction progression under severe processing conditions. Molecular docking, used as a pre-reaction non-covalent interaction model, suggested that lactose could initially contact epitope-adjacent regions of native α-LA, including residues around Arg10 and Lys13. In commercial samples, pasteurized milk retained higher α-LA immunoreactivity than ultra-high-temperature and reconstituted milk, and acceptable recovery was obtained in a spiked soymilk matrix. These findings reveal a condition-dependent switch in the role of lactose from a conformational stabilizer to a Maillard-associated contributor to α-LA antigenicity modulation. The proposed icELISA provides a practical complementary immunochemical tool for evaluating processing-induced differences in dairy products.
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危险品化学品经营许可证（带存储）