FOOD CHEMISTRY
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2024
·
IF 8.5
Zhen Wang,Waqas Ahmad,Songguang Zhao,Afang Zhu,Shuhao Huo,Quansheng Chen
The precise changes in the flavor quality of green tea before and after the optimal consumption period remain elusive. This study used HS-SPME-GC–MS to carefully examine the volatile compounds of green tea samples from multiple storage periods and simultaneously detected changes in taste and color during tea infusion. Notably, 16 compounds with VIP > 1.5 were identified, highlighting their significance in the overall analysis profile. Among these components, nonanoic acid, octanoic acid and hexanal were identified as potential contributors to off-flavors and rancid oil flavors in tea after storage. The color of the tea broth becomes darker. Bitter flavor is associated with increased amino acid content. The PSO-SVM model showed excellent accuracy for predicting the storage duration of green tea. These findings provide critical theoretical understandings of green tea manufacturing and quality control.
研究领域:
食品科学
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茶叶研究
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分析化学
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产品关联
DOI
PubMed
高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 11
·1860
·
IF 5.719
Dan Li,Mengyuan Li,Shiping Zhu,Yanmei Gao,Mengyao Mu,Ning Zhang,Youmei Wang,Minghua Lu
Sample pretreatment plays important role in the analysis and detection of trace pollutants in complex matrices, such as environmental and biological samples. The adsorption materials of sample pretreatment receive considerable attention, which has a significant effect on the sensitivity and selectivity of the analytical method. In this work, the porous hexagonal boron nitride (h-BN) was utilized as a coating material of solid-phase microextraction (SPME) to extract and preconcentrate polycyclic aromatic hydrocarbons (PAHs) prior to separation and detection with GC-FID. Attributed to the multiple interactions including hydrophobicity, hydrogen bonding and strong π–π interaction, the h-BN coating showed excellent extraction performance for PAHs. Under the optimal conditions, the method showed the linear relationship in the range of 0.1–50 ng mL−1for acenaphthene, 0.05–50 ng mL−1for pyrene, and 0.02–50 ng mL−1for fluorene, phenanthrene and anthracene with a correlation coefficient (R2) not lower than 0.9910. The enrichment factors were achieved between 1526 and 4398 for PAHs with h-BN as SPME fiber coating. The detection limits were obtained in the range of 0.004–0.033 ng mL−1, which corresponds to 0.08–0.66 ng g−1for soil. The method was successfully applied to analysis of real soil samples. The recoveries were determined between 78.0 and 120.0% for two soil samples. The results showed that h-BN material provided a promising alternative in sample pretreatment and analysis.Keywords:sample pretreatment;solid-phase microextraction (SPME);hexagonal boron nitride (h-BN);nanomaterials;polycyclic aromatic hydrocarbons (PAHs);soil
研究领域:
分析化学
·
环境科学
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DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2023
·
IF 8.8
Lei He,Qian Hu,Liyang Wei,Xuliyang Ge,Ning Yu,Ying Chen
An integrated metabolomics approach based on UPLC-QTOF-MS and HS-SPME-GC-orbitrap-MS was performed to investigate the dynamic changes of metabolite profiling in chickpeas, red speckled kidney beans, and mung beans during soaking. There were 23, 23, 16 non-volatile metabolites, and 18, 21, 22 volatile metabolites were identified as differential metabolites in chickpeas, red speckled kidney beans, and mung beans during soaking, respectively. These metabolites mainly included flavonoids, lysophosphatidylcholines (LPCs), lysophosphatidylethanolamines (LPEs), fatty acids, alcohols, aldehydes, and esters. The key time points responsible for the significant changes in metabolites and quality of the three pulses were 4, 8, and 24 h of soaking. Results revealed that the variations of some metabolites could attribute to oxidation and hydrolysis reactions. These results contribute to a better understanding of how soaking affects pulses quality, and provide useful information for determining soaking time according to nutritional and sensory requirements of their final products or dishes.
研究领域:
食品科学
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代谢组学
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植物学
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产品关联
DOI
PubMed
高影响因子
TALANTA
·
2026
·
IF 6.7
Chenqing Zhang,Yanmei Shi,Cheng Yang,Di Zhao,Weixia Zhu,Shusheng Zhang,Kai Hu
Novel isoxazoline-class veterinary drugs have been widely adopted as broad-spectrum acaricides and insecticides in veterinary medicine. Herein, a new fluorine-functionalized covalent organic framework was designed and synthesized. The fluorinated framework exhibits significantly enhanced adsorption capacity for isoxazoline compounds compared to its non-fluorinated analogue, attributable to multiple synergistic interactions including pseudo-hydrogen bonding, F-O, F-π interactions, π-π stacking, and enhanced hydrophobic effects between the fluorinated COF and isoxazoline molecules. The COF-functionalized SPME fibers were fabricated for the enrichment of isoxazolines from complex water and milk samples, followed by sensitive LC-MS/MS quantification. Under optimized conditions, the developed SPME/LC-MS/MS method exhibited wide linearity (0.01-50 ng mL -1 , R 2 ≥0.9935), satisfactory recoveries (81.7-118.6%) with RSDs of 1.0-12.3%, and demonstrated high sensitivity and selectivity. This analytical approach reports the first application of SPME for detecting novel isoxazoline drugs in milk and water matrices, offering significant promise for advancing food safety surveillance and environmental monitoring programs.
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DOI
PubMed
高影响因子
ANALYTICA CHIMICA ACTA
·
2026
·
IF 6.1
Xi Bian,Kang Cheng,Hao Gao,Shaokai Jian,Zeyu Lin,Xinxin Zhang,Chengji Sui,Dafeng Jiang,Yongchao Lai
In-tube SPME-SERS platform enables rapid pollutant screening. • Dynamic flow enhances mass transfer and extraction capacity. • Sampling, enrichment, and detection are completed within 3 min. • The method successfully screens multiple hydrophobic pollutants in water. Background Given the persistence, bioaccumulation, and toxicity of hydrophobic pollutants (HPs), rapid and reliable screening methods are critically needed. Herein, we propose an integrated approach coupling surface-enhanced Raman spectroscopy (SERS) with in-tube solid-phase microextraction (in-tube SPME) for the rapid screening of HPs. The device integrates a dual-functional substrate (tert-dodecylthiol-modified silver nanostructures) within a quartz capillary and a syringe pump for flow control. During analysis, sample solutions are pumped through the capillary, enabling rapid HP adsorption onto the substrate via hydrophobic interactions under continuous flow. Results This dynamic configuration enhances mass transfer efficiency, facilitating rapid SERS detection with a portable Raman spectrometer. The entire “sampling and detection” workflow of the in-tube SPME-SERS method can be completed within 3 min. This method exhibits a good linear relationship (R 2 = 0.997) for the quantitative determination of Sudan III over the concentration range of 5–100 nM, with a limit of detection (LOD) as low as 0.658 nM, demonstrating outstanding sensitivity. Furthermore, the method shows satisfactory performance in terms of spatial homogeneity, batch-to-batch reproducibility, and long-term stability. Significance By balancing speed and accuracy in environmental HP analysis, this work provides a robust framework for portable screening platforms with significant potential for ecological monitoring and exposome research. Download: Download high-res image (211KB) Download: Download full-size image
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DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2022
·
IF 6.911
Xinying Gong,Linyan Xu,Siming Huang,Xiaoxue Kou,Shu Lin,Guosheng Chen,Gangfeng Ouyang
Herein, a novel solid-phase microextraction (SPME) fiber based on the NU-1000 sorbent was developed for direct immersion extraction of organochlorine pesticides (OCPs) in water samples. As a kind of metal-organic framework, the NU-1000 possessed the mesoporous channels which were beneficial for the mass transfer of target analytes. Extraction equilibrium was achieved rapidly with the optimal extraction time of 30 min. The NU-1000 coated fiber with a high specific surface area showed better extraction efficiencies than commercial fibers (65 μm PDMS/DVB or 85 μm PA) towards OCPs, with the enrichment factors of the NU-1000 coated fiber 2–20 times higher than the latter. NU-1000 coated fiber showed higher extraction efficiencies toward polycyclic aromatic hydrocarbons (PAHs) than OCPs and nitrobenzenes . This indicated that π-π interaction and CH-π interaction between pollutants and aromatic groups of the NU-1000 contributed to the high extraction efficiencies. Under the optimal conditions (extraction at 40 °C for 30 min and desorption at 260 °C for 6 min), the NU-1000 coated fiber coupled with gas chromatography-mass spectrometry (GC-MS) exhibited satisfied analytical performance on analysis of OCPs, with a wide linear range (0.1–2000 ng L −1 ), low limits of detections (LODs, 0.011–0.058 ng L −1 ), and good reproducibility and repeatability. The established method has been successfully applied to the determination of OCPs in surface water with good sensitivity and recoveries, which proved the great promise of the NU-1000 on the extraction of organic pollutants with conjugated groups.
研究领域:
分析化学
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环境科学
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产品关联
DOI
PubMed
高影响因子
BIOPROCESS AND BIOSYSTEMS ENGINEERING
·
2020
·Vol. 43
·期 5
·831-838
·
IF 2.419
Liu Bin,Wang Xufeng,Zhao Jiahao,Qin Liehao,Shi Lei,Zhou Tao,Liu Shuang,Wang Chunling
Zygosaccharomyces rouxii referred as Yeast S is an important microorganism widely applied in traditional fermented food to accelerate flavor formation. Z. rouxii 3-2 referred as Yeast S 3-2 constructed previously is a new strain having higher salt tolerance than wild type. In this study, salt stress response of synthesis key flavor metabolites 3-methylthiopropanol, 2-phenylethyl alcohol, and isoamyl acetate in Yeast S and S 3-2 were investigated based on SPME–GC–MS and RT-qPCR. Analysis of GC–MS data showed that high salinity led to increase the contents of 3-methylthiopropanol and 2-phenylethyl alcohol both in Yeast S and Yeast S 3-2, while inhibited the synthesis of isoamyl acetate, and the induced effect on Yeast S 3-2 was more pronounced than Yeast S. Furthermore, the RT-qPCR results revealed that the salinity could enhance the genes expression of ARO10 and PDC1 , and stronger effect on Yeast S 3-2 than S. However, the gene expression of AFT1 was reduced in high-salt culture conditions, which was consistent with the results of GC–MS data. The results presented in this study can provide theoretical support of Z. rouxii 3-2 application during food fermentation.
研究领域:
微生物学
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食品科学
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分子生物学
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产品关联
DOI
PubMed
高影响因子
ANALYTICAL SCIENCES
·
2023
·Vol. 39
·期 6
·925-933
·
IF 1.6
Tang Tingfan,Li Xiaohui,Zhu Jiaqing,Huang Wenyi,Cheng Hao,Feng Jun
In this paper, a polymer monolithic column based on poly (Butyl methacrylate-co-ethylene glycol dimethacrylate) (poly (BMA-co-EDGMA)) doped with MIL-53(Al) metal–organic framework (MOF) was prepared using an in situ polymerization method. The characteristics of MIL-53(Al)-polymer monolithic column were studied through scanning electron microscopy (SEM), Fourier transform infrared spectrometry (FT-IR), energy-dispersive spectroscopy (EDS), X-ray powder diffractometry (XRD), and nitrogen adsorption experiment. Due to its large surface area, the prepared MIL-53(Al)-polymer monolithic column has good permeability and high extraction efficiency. Using MIL-53(Al)-polymer monolithic column for solid-phase microextraction (SPME), coupled to pressurized capillary electrochromatography (pCEC), a method for the determination of trace chlorogenic acid and ferulic acid in sugarcane was established. Under optimized conditions, chlorogenic acid and ferulic acid have a good linear relationship ( r ≥ 0.9965) within the concentration range of 50.0–500 µg/mL, the detection limit is 0.017 µg/mL, and the relative standard deviation (RSD) is less than 3.2%. The spike recoveries of chlorogenic acid and ferulic acid were 96.5% and 96.7%, respectively. The results indicate that the method is sensitive, practical, and convenient. It has been successfully applied to the separation and detection of trace organic phenolic compounds in sugarcane samples. Graphical abstract
研究领域:
分析化学
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食品科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
Micromachines
·
2020
·Vol. 11
·期 2
·120
·
IF 2.524
Yujun Chen,Tao Gong,Cilong Yu,Xiang Qian,Xiaohao Wang
Simplifying tedious sample preparation procedures to improve analysis efficiency is a major challenge in contemporary analytical chemistry. Solid phase microextraction (SPME), a technology developed for rapid sample pretreatment, has flexibility in design, geometry, and calibration strategies, which makes it a useful tool in a variety of fields, especially environmental and life sciences. Therefore, it is important to study the coupling between the microfluidic electrospray ionization (ESI) chip integrated with the solid phase microextraction (SPME) module and the electrospray mass spectrometer (MS). In our previous work, we designed a solid phase microextraction (SPME) module on a microfluidic chip through geometric design. However, automation and calibration methods for the extraction process remain unresolved in the SPME on-chip domain, which will lead to faster and more accurate results. This paper discusses the necessity to design a micromixer structure that can produce different elution conditions on the microfluidic chip. By calculating the channel resistances, the microfluidic chip’s integrated module with the micromixer, SPME, and ESI emitters optimize the geometry structure. We propose the annular channel for SPME to perform the resistances balance of the entire chip. Finally, for SPME on a single chip, this work provides a quantitation calibration method to describe the distribution of the analytes between the sample and the extraction phase before reaching the adsorption equilibrium.Keywords:flow-through solid phase microextraction (SPME) on chip;quantitative analysis of flow-through solid phase microextraction (SPME);online separation;eluted;microfluidic chip;mass spectrometer (MS)
研究领域:
分析化学
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环境科学
·
生命科学
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DOI
PubMed
高影响因子
ANALYTICAL CHEMISTRY
·
2022
·
IF 8.008
Shu Li,Xiaochen Lv,Qing Yang,Shaoying Zhang,Jie Su,Shi-Bo Cheng,Yongchao Lai,Jing Chen,Jinhua Zhan
The core of the surface-enhanced Raman spectroscopy (SERS)-based techniques for dynamic monitoring is to realize rapid and reversible adsorption. Herein, the integration technology of electro-enhanced adsorption, solid-phase microextraction, and surface-enhanced Raman spectroscopy (EE–SPME–SERS) was developed to obtain sensitive, ultrafast, and reversible SERS response toward in situ monitoring of pharmaceuticals and personal care products (PPCPs). In the EE–SPME–SERS method, a roughened Ag fiber with Au modification (r-Ag/Au fiber) was used as the SERS substrate, SPME sorbent, and working electrode. The r-Ag/Au fiber displayed good SERS sensitivity, ultrahigh photostability, and adsorption properties. The adsorption efficiency of benzidine was 76 times accelerated in EE–SPME–SERS compared to that in static adsorption. The whole process of “sampling and detection” in EE–SPME–SERS can be finished within 1 s. Reversible adsorption and desorption can be achieved in situ by switching the direction of electric field, and the regeneration process takes only a few minutes. Simulated release of benzidine from household wastewater was in situ and dynamically monitored using this strategy. EE–SPME–SERS was proved universal for ionized PPCPs and can detect multicomponents simultaneously. In addition, EE–SPME–SERS showed very good analytical properties. Great potential of EE–SPME–SERS can be expected in environmental monitoring.
研究领域:
分析化学
·
环境科学
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DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2022
·
IF 5.304
Tong Liao,Jia Jia,Kang Tong,Jiuhong Ouyang,Wei Jiang,Xia-ping Zhu
A novel hyper-crosslinked 2, 8, 14, 20-tetraphenyl calix [4] resorcinol arene polymer (HCP-TCRA) was synthesized by using an external crosslinking of 2, 8, 14, 20-Tetraphenyl calix [4] resorcinol arene (TCRA) as monomers and dimethoxymethane as crosslinker. The HCP-TCRA was explored as a SPME fiber coating material. A variety of physicochemical characterization demonstrated that the material has excellent chemical/thermal stability and strong hydrophobicity. The fiber demonstrated fantastic adsorptive property for three synthetic estrogens (diethylstilbestrol, hexestrol, ethinyloestradiol, abbreviated to SESs). In this work, an efficient HCP-TCRA fiber-based SPME method was developed to analyze SESs by coupling with HPLC-MS detection. Under the optimized SPME conditions, this method was shown a wide range of linearity (2.0–100.0 ng mL −1 for diethylstilbestrol, 1.0–100.0 ng mL −1 for hexestrol, and 30.0–480.0 ng mL −1 for ethinyloestradiol), low limits of detection (LODs, 0.5 ng mL −1 for DES 0.3 ng mL −1 for HEX, 10.0 ng mL −1 for EES) and fine reusability (more than 30 times). Finally, the proposed methods had been applied to the determination of SESs in milk samples with a simple pretreatment. At three different levels, relative recoveries presented between 86.7 and 106.4%. The method put up highly sensitive and budget-friendly in detection SESs, and has capacity in quality control of milk products.
研究领域:
分析化学
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食品安全
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环境科学
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产品关联
DOI
高影响因子
EUROPEAN JOURNAL OF LIPID SCIENCE AND TECHNOLOGY
·
2019
·Vol. 121
·期 6
·1800521
·
IF 1.852
Honglei Mu,Haiyan Gao,Hangjun Chen,Xiangjun Fang,Yongjun Zhou,Weijie Wu,Qiang Han
Walnut ( Carya cathayensis Sarg.) oil contains over 85% unsaturated fatty acids, which are easily oxidized during storage. As a result, a large number of volatile oxidation compounds (VOCs) are formed during oxidation. The qualitative composition of VOCs in walnut oil and quantitative prediction of the oxidation parameters (peroxide value [POV], acid value [AV], and p -anisidine value [ p -AnV]) by VOCs are investigated through SPME/GC-MS combined with partial least-squares (PLS) regression analysis. Eighteen VOCs including aldehydes, alcohols, and acids are detected by SPME/GC-MS. According to the comprehensive scores of principal component analysis (PCA), 2-octenal, hexanal, 2-heptenal, 1-octen-3-ol, hexanoic acid, and nonanal are the main products formed during oxidation. Then PLS regression is applied to developing quantitative prediction models of oxidation parameters (POV, AV, and p -AnV) by VOCs. The PLS prediction models have a good performance, with determination coefficients (R 2 p ) of 0.993–0.997 for the prediction sets of the three oxidation parameters. Practical Applications : The quantitative relationship between VOCs and oxidation parameters is developed in this study, which provided a new method for monitoring the quality of walnut oil. The SPME/GC-MS combined with PLSR is a feasible and potential method for simultaneous qualitative and quantitative analysis of oxidation process. This method is proven to have a precise predictive ability and provided a potential application in the quality assessment of other nut products. Volatile oxidation compounds (VOCs) are detected by SPME/GC-MS in oxidized walnut ( Carya cathayensis Sarg.) oil. Following this determination, partial least-squares regression (PLSR) is applied to developing quantitative prediction models of oxidation parameters by VOCs.
研究领域:
食品科学
·
分析化学
·
植物学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）