JOURNAL OF FOOD COMPOSITION AND ANALYSIS
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2025
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IF 4.6
Juanli Du,Shuang Feng,Wenying Wu,Xu Jing,Hao Wu,Kasim Sakran Abass,Xiaowen Wang,Jianhai Zhang
Sulfonamides (SAs) are widely used, and their residues pose a serious threat to food safety and human health. Herein, we developed a green, accurate, and sensitive method for detecting SAs residues in animal-derived food using a modified QuEChERS method combined with enzyme inhibition–based colorimetry. Magnetic COF (TpPa-Cl)@Fe 3 O 4 was simple to synthesise, chemically stable and reusable. When used as an adsorbent in modified QuEChERS, it simplifies the purification process and has a high purification capacity. An environmentally friendly natural deep eutectic solvent synthesized using propylene glycol and betaine can serve as a green substitute for traditional organic extractants. SAs were detected by inhibiting the colorimetric reaction between carbonic anhydrase and p -nitrophenyl acetate, and were quantitatively analyzed by digital image colorimetry (DIC) of smartphone. Under optimal conditions, the limits of detection and quantification were 0.53–0.86 µg·kg −1 and 1.52–1.95 µg·kg −1 , respectively. The recoveries of SAs were in the range of 93.60%–101.60%, and the relative standard deviation was < 4.9%. Based on the combined results, our developed method has good applicability in the analysis of SAs residues in food.
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高影响因子
TALANTA
·
2024
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IF 5.6
Lichen Gou,Ling Li,Siqi Wei,Yunfei Tian,Xiandeng Hou,Li Wu
Herein, the surface-enhanced Raman scattering (SERS) platform was combined with an azo coupling reaction and an aluminum alloy covered with a hydrophobic layer of praseodymium oxide and stearic acid complexes for the detection of histamine. The praseodymium oxide on aluminum alloy was successfully synthesized by the rare-earth-salt-solution boiling bath method and modified by stearic acid. Its surface exhibits a water contact angle (WCA) of 125.0°. Through the azo derivatization reaction with 3-amino-5-mercapto-1,2,4-triazole (AMTA) diazonium salts, histamine can be converted into the derivatization product with higher Raman activity. The mixture of the derivatization product and β-cyclodextrin-modified Ag nanoparticles (β-CD-AgNPs) were dropped onto the surface of an aluminum alloy covered with a hydrophobic layer of praseodymium oxide and stearic acid complexes, and dried for SERS measurement. The intensity ratio between the SERS peaks at 1246 cm −1 and 1104 cm −1 (I 1246 /I 1104 ) of the derivatization product was used for the quantification of histamine. Under the selected conditions, the limit of detection (LOD) and the limit of quantification (LOQ) for this method were 7.2 nM (S/N = 3) and 24 nM (S/N = 10), respectively. The relative standard deviation (RSD) of this method for the determination of 1 μM histamine was 6.1 % (n = 20). The method was also successfully used for the determination of histamine in fish samples with recoveries ranging from 92 % to 111 %. The present method is simple, sensitive, reliable, and may provide a new approach for preparing the composite hydrophobic layer that can enhance SERS signals through hydrophobic condensation effect. Meanwhile, it may have a promising future in the determination of small molecular compounds containing an imidazole ring.
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ANALYTICAL LETTERS
·
2024
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IF 1.6
Jingjing Gu,Chunyang Chen,Tingting Liu,Yanyan Li,Xuedong Wang
Here is reported effervescent reaction-enhanced switchable hydrophilic-hydrophobic solvent-based salting-out microextraction (ERSSM) with high-performance liquid chromatography with photodiode array detection (HPLC-PDA) for the preconcentration, extraction, and trace-level determination of polybrominated diphenyl ethers (PBDEs) in milk and water. The important variables were rigorously optimized to be 150 µL of hexanoic acid as the extraction solvent, 400 µL of Na2CO3 as the alkaline source, 350 µL of H2SO4 solution as the acid source, and NaCl as the salting-out agent. The optimized conditions provided a linear range from 0.2 to 50 µg L−1 with limits of detection and quantitation from 0.026 to 0.085 µg L−1 and 0.087 to 0.28 µg L−1 for six PBDEs. The intra-day and inter-day precision values were from 2.48% to 6.75%, and the fortified recoveries for PBDEs were between 78.06% and 103.07% in water and milk samples. The developed procedure avoids the use of a traditional organic disperser and mechanical mixing allowing the determination of PBDEs outdoors by synchronous extraction method and high efficiency for the analytes. These advantages suggest a high potential for the routine monitoring of PBDEs in liquid food and environmental samples.
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TALANTA
·
2025
·
IF 6.1
Yuxin Wang,Yulin Wang,Jizhen Fu,Suzhen Li,Yawen Zhang,Xiaojiao Zheng,Jin Liu,Li Li,Xu Jing
In this study, a rapid and simple semi-automatic emulsification liquid-liquid microextraction technique based on deep eutectic solvents was developed for determining strobilurin fungicides in food samples using high-performance liquid chromatography. Novel deep eutectic solvents formed as extractants by combining quaternary phosphates and fatty acids, eliminating the need for toxic solvents in liquid-phase microextraction. The extraction process was facilitated by an electric micropipette, which emulsified and injected the deep eutectic solvent-water mixture directly into the sample. The semi-automated approach enhanced extraction speed and efficiency while minimizing manual error. The sample and deep eutectic solvent mixture were emulsified immediately and separated within 15 min of standing. Only an electronic micropipette was used to achieve extraction and separation. The method demonstrated a linear range of 2–200 μg L −1 with R 2 > 0.996 and a limit of detection of 0.6 μg L −1 . Recovery ranged from 73.0 % to 100.1 %, with relative standard deviations from 0.4 % to 6.1 %. The greenness of the method was validated through multiple assessment tools, including the Green Analytical Procedure Index, Analytical GREEnness metric for sample preparation, and Sample Preparation Metric of Sustainability. The emulsification liquid-liquid microextraction procedure, based on innovative solvents and electric micropipette technology, proved successful for application in water, juice, and vinegar samples and showed potential for broader use in pesticide residue analysis in food.
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ADVANCED FUNCTIONAL MATERIALS
·
2025
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IF 19
Huifang Yang,Chaohui Zhao,Yanze Wang,Xinqi Xu,Gaoyu Chen,Denglin Zhao,Zengguang Zhang,Min Rao,Juntao Lu,Yatao Zou,Zhongbin Wu,Wenbo Hu,Ziwei Li,Meng Su,Qiushui Chen,Xiaowang Liu,Nicolas H Voelcker,Bo Peng,Weidong Xu
Real-time, high-precision X-ray imaging is of critical importance in a wide range of applications, from medical diagnostics to security screening. While lanthanide luminescent materials are among the most commonly used scintillators, achieving a combination of large-area scalability, rapid response, and optimal performance remains challenging. Herein, a perovskite-inspired cerium halide nanocrystal scintillator is presented with a remarkable photoluminescence quantum yield approaching unity and a fast radiative recombination rate of ≈29 ns. By leveraging these promising characteristics, large-area X-ray imaging is demonstrated with a spatial resolution of 12.21 lp mm −1 and an ultra-low detection limit of 11.2 nGy s −1 , alongside applications in dynamic imaging. Based on these paternal nanocrystals, the versatile spectral tunability through halide alloying and cation doping is further explored, offering a promising platform for future chemical and structural design toward advanced scintillations and other down-conversion applications.
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FOOD CHEMISTRY
·
2025
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IF 9.8
Ruili Ma,Weiguo Wu,Yikang Shu,Ran Gao,Ziyu Wang,Daoquan Tang,Yan Du,Shuai Ji
This paper reports a novel method for simultaneous extraction and in situ separation of flavonoids and alkaloids from mulberry leaves using a pH-responsive deep eutectic solvent (DES)/water system. Five novel DESs were synthesized, and isoquercitrin and deoxynojirimycin were respectively selected as the representative compounds of flavonoids and alkaloids to evaluate the extraction and separation efficiency. The optimal DES, namely [HexA (hexanoic acid)][MPD (2-methyl-2,4-pentanediol)], was identified, and the extraction and in situ separation conditions were optimized. After extraction and pH-induced phase separation, flavonoids were mainly enriched in the DES phase with alkaloids in the H 2 O phase, and the distribution ratios were 6.69:1 and 1:9 ([HexA][MPD]:H 2 O), respectively. Compared to traditional solvents, the [HexA][MPD]/H 2 O system showed higher extraction efficiency of flavonoids and alkaloids with higher purity. Moreover, [HexA][MPD] possessed excellent reusability. This study demonstrates the application of pH-responsive DES/H 2 O systems for simultaneous extraction and separation of natural products for the first time.
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FOOD CHEMISTRY
·
2024
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IF 8.5
Tianyu Ma,Chunguang Wang,Xinyue Zhang,Yuxuan Zhu,Jiani Liu,Jian Sun,Baoqing Zhu,Dongqing Ye
Two varieties of mango juices (MJs) were separately fermented with 40 strains Lactiplantibacillus plantarum . The volatile compounds and sensory characteristics of the fermented mango juices (FMJs) were analyzed by HS-SPME-GC–MS and Napping method. The results demonstrated well growth among all strains except for LC25. Strains SS6 and B15 demonstrated the strongest acid production capacity in ReNong and Ketti MJs. Seventy-five volatile compounds were identified, showcasing strain-specific differences. Fermentation significantly enhanced the complexity and intensity of aroma compounds, especially terpenes, esters and alcohols. Sensory evaluation categorized FMJs into six aroma profiles, with strains C10 and LA100 exhibiting pleasant ‘mango’ flavor in ReNong and Ketti MJs. Multivariate factor analysis revealed that esters potentially play a key role in enhancing the ‘mango’ and ‘floral’ aroma of the FMJs. This study serves as a valuable resource for Lp. plantarum strain selection and quality control in FMJ development by analyzing the acid and aroma diversity.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
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IF 9.7
Mengxiang Nie,Xiaolin Zhu,Shengjie Jiang,Qingyu Xie,Long Luo,Liang Zhao,Min Zhou,Daofu Wu,Xiaosheng Tang,Jia Wang,Shengnan Tian,Yongfeng Liu
Halide perovskite quantum dots (PeQDs) have garnered significant attention for their exceptional optoelectronic properties, particularly in light-emitting diode (LED) applications. However, their susceptibility to thermal degradation at elevated temperatures (>100 °C) poses a critical barrier to commercialization. In this study, we address this challenge through a synergistic ZnF 2 post-treatment strategy applied to CsPbBr 3 PeQDs. Comprehensive experimental characterizations and density functional theory (DFT) calculations reveal that the ZnF 2 treatment induces the formation of a dual-shell structure: CsPbBr 3 : F inner shell and a zinc-rich outer shell chemically that bonds with Br and F ions from the CsPbBr 3 : F layer. The inner shell primarily suppresses thermal degradation, while both shells collaboratively mitigate surface defects. This dual-shell engineering endows the CsPbBr 3 PeQDs with remarkable thermal stability, maintaining their optical properties and crystallinity even after heating at 120 °C for 60 min, alongside achieving near-unity photoluminescent quantum yield. Furthermore, the dual-shell PeQDs exhibit a 24-fold enhancement in device lifespan in electroluminescent LEDs and superior operational stability in photoluminescent white LEDs. This work offers a simple yet highly effective approach to fabricating thermally stable PeQDs, paving the way for their practical application in next-generation optoelectronic devices.
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ACS Applied Materials & Interfaces
·
2025
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IF 8.2
Yuliang Ye,Jiaxiang Wang,Zunxian Yang,Ye Chen,Hui Zhang,Yuting Bai,Xudong Jiang,Benfang Liu,Jiajie Hong,Yue Chen,Zhezhou Fang,Jinzhu Gao,Zheyu Zhou,Runsen Yu,Xuanyao Song,Zhiyu Yuan,Tailiang Guo,Fushan Li,Yongyi Chen,Zhenzhen Weng
Perovskite quantum dots (PQDs) have attracted more and more attention in light-emitting diode (LED) devices due to their outstanding photoelectric properties. Surface ligands not only enable size control of quantum dots but also enhance their optoelectronic performance. However, the efficiency of exciton recombination in PQDs is often hindered by the desorption dynamics of surface ligands, leading to suboptimal electrical performance. In this study, sodium methanesulfonate (NaMeS) was successfully introduced during PQD synthesis and ligand exchange, where the S═O groups effectively interacted with the perovskite components. The NaMeS-modified PQD films exhibited significantly improved surface morphology, radiative recombination efficiency, and carrier mobility. Consequently, Pe-LEDs derived from NaMeS-capped PQDs achieved a remarkable enhancement in performance with a maximum external quantum efficiency of 9.41%. This work thus provides a novel and effective strategy for the development of high-performance PQDs and their applications in LEDs.
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Journal of Materials Chemistry C
·
2024
·
IF 5.7
Dongdong Liang,Zhiheng Xu,Dandan Yang,Zhibin Xu,Weitong Yin,Xiaobin Tang
Luminescence instability in service environments has limited the widespread use of halide perovskite materials, especially for X-ray energy conversion and detection/imaging. This work proposed a method for improving luminescence stability through polymer encapsulation, which is more convenient than compositional engineering and surface modulation. Meanwhile, the differences in the luminescence intensities of composite films synthesized by encapsulation of different polymer matrices and their luminescence stability under various harsh X-ray irradiation conditions were systematically investigated. The applications of the developed CsPbBr3-embedded polymer films with excellent luminescence performance and high service stability in X-ray radiation energy utilization and detection/imaging were discussed. The results show that CsPbBr3-embedded PS films can meet the spectral modulation requirements of radioluminescent materials for nuclear batteries and can also fulfill the needs of flexible X-ray imaging with a high spatial resolution.
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ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Yanfeng Chen,Meng Nan,Yanxing He,Shuang Lu,Wei Shen,Gang Cheng,Shufen Chen,Wei Huang
During the synthesis of deep-blue perovskite quantum dots (PQDs), they generally emerge as a two-dimensional byproduct with poor yield and low photoluminescence quantum yield (PLQY) due to amine ligand enrichment-induced abundant surface defects. Herein, we provide a colloidal synthesis method to prepare deep-blue CsPbBr3 PQDs in a green nontoxic solvent via strategic Z-type ligand engineering. Z-type ligands of zinc octanoate enable the formation of robust coordination bonds with surface bromide ions of PQDs, maintaining acid–base equilibrium and reducing excess amine enrichment on the PQDs surface. Consequently, homogeneous and monodispersed PQDs with improved PLQY of 73% are successfully synthesized, achieving efficient deep-blue LEDs with a peak EQE of 5.46%, a maximum luminance of 847.6 cd/m2, and an operational half-lifetime of 14 min. The devices exhibit color coordinates of (0.137, 0.049), closely approximating the Rec. 2020 blue standard. Our work offers a potentially eco-friendly and viable route for realizing high-performance LEDs in the deep-blue region.
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LANGMUIR
·
2024
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IF 3.7
Shaoyang Liu,Jie Qi,Yuzhe Li,Ruiyao Wang,Li Wang,Hongsheng Lu,Zheng Zhang
The reversible shift in polarity or hydrophilicity/hydrophobicity of switchable solvents greatly simplifies the recovery capacity in extraction applications. However, the environmental and economical advantages of switchable solvents are not significant. In this work, we designed three pH-responsive natural deep eutectic solvents (NADESs) by combining the pH-switchable solvent fatty acids with the nonswitchable solvent ethyl lactate (EL), followed by the exploration of the solubilization and separation performance of these NADESs for petroleum hydrocarbons. EL can be miscible in fatty acids and water; however, when in contact with both at the same time, EL binds to fatty acids through stronger intermolecular hydrogen bonds, whereas when fatty acids are deprotonated to fatty acid salts, EL can bind to water. The deprotonation/protonation of fatty acids could reversibly change the NADES hydrophilicity, and the recovery of NADES HA/EL could exceed 95% after three cycles. Furthermore, after extractive separation of simulated oils of differing complexity, NADES HA/EL was selected as the best extractant. Compared with the extraction of oil sands with a single solvent, NADES provides better wetting of the sand surface, better stripping efficiency of the heavy components that adhere to the surface of oil sands, and better dispersion of the stripped petroleum hydrocarbons. Petroleum hydrocarbons can be separated by NaOH-induced hydrophilic changes in NADES, which can be regenerated upon the addition of HCl. The recovered NADES showed good reusability in the cleaning of oil sands. The oil removal rates were 96.9%, 94.4%, and 91.9% after three cycles of cleaning with NADES at 25 °C. This method is expected to expand the application of nonswitchable solvents in sustainable extraction.
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