Journal of Chromatography Open
·
2025
·
IF 3.2
Wanqin Wu,Songsong Zhu,Jintao Xia,Feng Jiang,Xiaolong Fan,Li Zhang
Purpose This study is to develop an effective method for separating, identifying, and quantifying suspected illegal additives from fruit and vegetable plums. Methods Ultra performance liquid chromatography coupled with quadrupole-time-of-flight mass spectrometry (UPLC-Q-TOF/MS) was employed to perform non-targeted screening of illegal additives from more than 10 batches of fruit and vegetable plums. A diesterified oxyphenisatin analog never detected before in foodstuffs was identified from a batch of fruit and vegetable plum. This analog was separated and purified by column chromatography, and its molecular structure was analyzed and identified using one dimension and two dimension-nuclear magnetic resonance spectra (1D and 2D NMR). After obtaining the synthesized reference standard, an UPLC-PDA detection method for the quantitative analysis of this analog in real samples was established. Results The results showed that the characteristic fragment ions with mass/charge ratio ( m/z ) of 224.07 and 196.07 appeared in the MS 2 spectrum, indicating that the analog had the skeleton of oxyphenisatin. Combining the fitted molecular formula of suspected compound, its degree of unsaturation, and the fragment ions with mass/charge ratios of 428.18, 334.14, 83.08 in the secondary mass spectrum, we speculated that the anhydride of esterified oxyphenisatin might be cyclohexanecarboxylic anhydride, which was in good consistent with NMR spectroscopic analysis. Based on these findings, the analog was eventually named dicyclohexylformyl oxyphenisatin. UPLC-PDA test results showed that the content of this analog in a batch of fruit and vegetable plum was 614.0 mg/kg. Conclusion As far as we know, dicyclohexylformyl oxyphenisatin is not a food additive. Structurally, it is the product from dicyclohexylformylation of oxyphenisatin. The illegal addition of this analog to food will cause unknown harm to uninformed consumers and requires the attention of relevant departments.
研究领域:
分析化学
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食品安全
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食品科学
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产品关联
DOI
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Shenhui Tan,Xuelai Zhang
In this paper, a novel binary eutectic phase change material (DA-HDL EPCM) and ternary composite phase change material (HDL-DA-CA/EG CPCM) are proposed for the temperature range of 10–20 °C and 2–8 °C. Compared with traditional ternary phase change materials (2–8 °C), CPCM has higher latent heat value and economic performance. The ternary CPCM uses dodecyl alcohol (DA) and 1,6 hexadiol (HDL) as the main eutectic phase change energy storage materials, and n-capric acid (CA) as the temperature modifier. A kind of HDL-DA-CA/EG composite phase change material (CPCM) was prepared by vacuum adsorption method, which solved the problems of low thermal conductivity and easy leakage of ternary CPCM. Differential scanning calorimeter (DSC), scanning electron microscope (SEM), thermal property analyzer (TCA) and high and low temperature alternating test chamber were used to characterize the thermal properties, microstructure, thermal conductivity and cyclic stability of related PCM. Experimental results: The final ratio of CPCM is 43.61%DA + 25.6%HDL + 23.08%CA + 7.7%EG, the phase transition temperature is 2.9 °C, the latent heat of phase transition is 181.3 J/g, and the thermal conductivity is 1.90 W/mK. After 500 cycles, the phase transition temperature of CPCM has little change, and the latent heat of phase transition is 169.8 J/g, which is reduced by 6.34 %, not more than 10 %, and has good stability. Finally, the simulation application data show that CPCM has a good application prospect in fruit and vegetable cold chain logistics.
研究领域:
材料科学
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食品科学
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物流工程
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产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2021
·
IF 7.514
Jie Liu,Xinxin Xu,Aihong Wu,Zhengyou Wang,Shanshan Song,Hua Kuang,Liqiang Liu,Chuanlai Xu
Propamocarb is a carbamate fungicide used to control Phytophthora disease. Frequent and large-scale use of propamocarb means that it poses a potential threat to the health of consumers. Monoclonal antibodies against propamocarb were prepared using a hapten of propamocarb that was generated by introducing a benzene ring and a carboxyl group into the structure of propamocarb. A lateral flow immunoassay strip was developed for the detection of propamocarb in tomato and cucumber samples using the gold nanoparticle-labeled antibody. The immunoassay strip was found to provide a visible limit of detection was 5 ng/g and the cut-off value was 250 ng/g for propamocarb in food samples. For quantitative analysis, the calculated limits of detection (LODs) of the immunoassay strip were 1.43 ng/g and 0.44 ng/g in cucumber and tomato, respectively. Using the immunoassay strip, the average recoveries ranged from 95.5 ± 5.4% to 108.8 ± 6.8%, with CVs of 3.1–6.2% for the cucumber, and the average recoveries were 95.1 ± 6.5%–111.9 ± 4.2%, with CVs ranging from 3.7% to 6.8% for tomato samples. All the results demonstrated that the immunoassay strip was suitable for the detection of propamocarb in fruits and vegetables.
研究领域:
农业科学
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免疫学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
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2018
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IF 3.412
Aimin Chen,Xiao Peng,Zaifa Pan,Kang Shao,Jing Wang,Maohong Fan
Future food safety monitoring with simple, fast, and visual methods has become increasingly important. Accordingly, this work was designed to construct a new-style dual-emission ratiometric fluorescent probe (CdSe@SiO2@CdTe) for visual assay of glutathione (GSH) with a “turn on” strategy. After adding Hg2+, the red fluorescence of the outer CdTe quantum dots (QDs) was quenched through both electron transfer and ion-binding processes. Upon the addition of GSH, the red fluorescence occurred again owing to the strong affinity between GSH and Hg2+, whereas the inner green fluorescence of CdSe QDs was unchanged, leading to a clearly recognizable fluorescence color change (from green to orange–red). In the concentration range from 0.1 to 10 μM, the relative fluorescence intensity ratios (I619/I535) showed an excellent linear correlation with the concentration of GSH, and the detection limit was as low as 42 nM under optimal conditions. Meanwhile, the ratiometric hybrid probes were successfully applied for direct visual sensing GSH in real vegetable and fruit samples.
研究领域:
食品科学
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生物化学
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
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IF 7.7
Haonan Wang,Yujia Chen,Yixuan Yang,Peipei Xu,Bohan Zhang,Yudong Lu,Wenjin He,Yunzhen Liu,Jian-Han Zhang,Xiufeng Xiao,Ruiyun You
In response to the prevalent issue of thiram as a common pesticide residue on the surface of fruits and vegetables, our research team employed an acidic hydrated metal salt low co-fusion solvent to dissolve cellulose lysis slurry. Subsequently, a regenerated cellulose membrane (RCM) was successfully prepared via sol-gel method. Uniformly sized Ag nanoparticles (NPs) were deposited on RCM utilizing the continuous ion layer adsorption and reaction (SILAR) technique. The resulting Ag NPs/RCM flexible surface-enhanced Raman spectroscopy (SERS) substrates exhibited a minimum detection limit of 5 × 10 −9 M for Rhodamine 6G (R6G), demonstrating good uniformity (RSD = 4.86 %) and reproducibility (RSD = 3.07 %). Moreover, the substrate displayed a remarkable sensitivity of 10 −10 M toward thiram standard solution. Given its inherent flexibility, the substrate proves advantageous for the detection of three-dimensional environments such as fruit and vegetable surfaces, and its practicality has been confirmed in the detection of thiram residue on apples, tomatoes, pears, and other fruits and vegetables.
研究领域:
分析化学
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食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Foods
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2025
·Vol. 14
·期 2
·152
·
IF 5.1
Yanshuo Wang,Dianjun Sun,Yinghan Zhang,Yichong Zhou,Ruyi Jin,Xiaoli Peng,Jian Li
Carvacrol, a natural plant compound with antibacterial, antioxidant, and various biological activities, serves as the basis for developing a micro-emulsion fruit and vegetable cleaner. The study found that carvacrol demonstrated a minimum inhibitory concentration (MIC) ranging between 0.25 and 0.5 mg/mL against four foodborne pathogenic bacteria and three spoilage fungi. The formulated cleaner, containing 67 mg/mL of carvacrol, demonstrated superior characteristics (a particle size of 228 nm, an absolute zeta potential of 21.4 mv, and a stability coefficient of 91.2%). Remarkably, the cleaner remained stable when stored at room temperature for at least 3 months. Its efficacy against pesticides ranged from 76% to 91%. The cleaning effectively inhibited microbial colonies and the decay rate of cherry tomatoes during storage at 4 °C. Furthermore, the cleaning treatment was found to minimize changes in color and hardness. Overall, this study provides evidence that a fruit and vegetable cleaner based on carvacrol enhances the safety of the food industry effectively.
研究领域:
食品科学
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植物化学
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微生物学
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产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
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2022
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IF 9.231
Hui Shu,Tingrun Lai,Zhichao Yang,Xuechun Xiao,Xiumin Chen,Yude Wang
High sensitivity and ultra-trace detection of imidacloprid are important and challenging in the field of food. In this study, we prepared a Fe-rich FeCoNi-MOF in-situ modified nickel foam working electrode by one-step hydrothermal method, and achieved a highly sensitive detection of the imidacloprid. The characterization techniques confirmed that Fe-rich FeCoNi-MOF had excellent crystallinity, tighter structure, and exposed rich active sites. The detection results showed that Fe-rich FeCoNi-MOF electrochemical sensor had a minimum detection limit of 0.04 pmol/L (100 times lower than that of the bioelectrochemical sensors), a wide response range (1 pmol/L–120 μmol/L), and high sensitivity (124 μA pmol/L -1 cm −2 ). These advantages of the electrochemical sensor were revealed theoretically by the valence change of active metal and the first principle calculation. Lastly, the Fe-rich FeCoNi-MOF electrochemical sensor was applied to detect imidacloprid in apple, fresh tea leaves, tomato, cucumber, and had an excellent recovery of 98–102.8 %.
研究领域:
食品科学
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分析化学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MOLECULES
·
2025
·Vol. 30
·期 9
·1869
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IF 4.6
Lili Chen,Shuya Xue,Xin Li,Linbo Deng,Jiapeng Li,Jing Zhou,Yansha Gao,Xuemin Duan,Limin Lu
The development of sensitive and selective methods for detecting pesticide residues has become paramount for ensuring food safety. In this work, a high-performance molecularly imprinted electrochemical sensor based on the composite of Cu-BTC- and FeCo-ZIF-derived N-doped carbon (FeCo@NC), synthesized by pyrolysis and electrodeposition, was developed for Benomyl (BN) detection. The materials were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). In this sensing system, the Cu-BTC/FeCo@NC composite used as the electrode substrate displayed a large specific surface area, high electronic conductivity, and rich active catalytic sites, demonstrating excellent electrocatalytic ability toward BN oxidation. Meanwhile, Cu-BTC, with its abundant surface functional groups, facilitated strong hydrogen bonding interactions with the imprinted template molecule of 3,4-ethylenedioxythiophene (EDOT), promoting the formation of a uniform molecularly imprinted membrane on the substrate material surface. The introduced MIP-PEDOT could enhance the selective recognition and enrichment of the target BN, leading to an amplified detection signal. Thanks to the synergistic effects between Cu-BTC/FeCo@NC and MIP-PEDOT, the proposed sensor achieved a low detection limit of 1.67 nM. Furthermore, the fabricated sensor exhibited high selectivity, reproducibility, and interference resistance in detecting BN. The method has been successfully applied to the determination of BN in vegetable and fruit samples, indicating its potential for use in practical applications.
研究领域:
食品科学
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分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Food Chemistry-X
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2024
·
IF 6.5
Ibrahim Khalifa,Remah Sobhy,Xiaobo Zou,Asad Nawaz,Noman Walayat,Putri Widyanti Harlina,Tarek Kh. Abdelkader,Mukhtar Ahmed,Sajid Maqsood
The effect of non-thermal (HPP and semi-HPP-CO 2 ) and thermal (flash pasteurization, FP) treatments on phytonutrients of flowable smoothie prepared from quadrable vegetable blends (FQVS) was investigated using multidimensional methods. First, FQVS gained an acceptability sensorial index (85.7%) compared with other formulas. FQVS/semi-HPP-CO 2 showed a greater microbial stability during storage (0–30 d) compared to HPP and FP. Fructose and glucose highly declined than sucrose in all smoothies, where semi-HPP-CO 2 steadily declined this reduction during storage. LC/MS-MS analysis showed that semi-HPP-CO 2 preserved most of FQVS's phytonutrients and their antioxidant effects measured by ORAC and oxidative enzymes inhibition assays. Semi-HPP-CO 2 acquired the lowest apparent viscosity among different FQVS smoothies, showing its post-processing flowability behavior. Most importantly, semi-HPP-CO 2 predicted a reduced power consumption for HPP and reduced the gas emission. In conclusion, blending different vegetables assisted with semi-HPP-CO 2 could be a novel approach to produce storage-stable smoothies with adequate amounts of phytonutrients and sensorial scores.
研究领域:
食品科学
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植物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL POLLUTION
·
2024
·
IF 7.6
Ri-Sheng Chen,Jian-Cheng Yuan,Chong-Lan Luo,Yu Wang,Zi-Jian Chen,Ze-Shan Lin,Zhen-Lin Xu
Profenofos (PFF) is a commonly used organophosphorus insecticide that requires strict monitoring due to its potential environmental, ecological, and human health risks originating from residues in soil and water systems, as well as accumulation in crops. In this study, a novel monoclonal antibody (mAb) specific to PFF was prepared for the first time and the recognition mechanism was investigated through molecular simulation. Subsequently, a mAb-based colloidal gold immunochromatographic assay (GICA) was developed for the rapid screening of PFF in fruit and vegetable samples. The mAb exhibited an IC 50 value of 12.9 ng/mL, and limit of detection (LOD) of 4.6 ng/mL, respectively in indirect competitive immunosorbent enzyme-linked immunosorbent assay (ic-ELISA). After optimization, the developed GICA exhibited a visual limit of detection (vLOD) of 20 ng/mL and a quantitative of detection (qLOD) of 5.2 ng/mL, with a linear range from 10.0 to 83.8 ng/mL. Good correlation was observed between the results of GICA and standard Gas Chromatography-Tandem Mass Spectrometry (GC-MS/MS) in matrix and recovery test. The developed GICA can be used for rapid sample detection within 15 min, which is an excellent tool for screening PFF in foods and environmental samples.
研究领域:
环境科学
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食品科学
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免疫学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Foods
·
2022
·Vol. 11
·期 23
·3818
·
IF 5.561
Zhicheng Li,Yanan Sun,Xiaodan Pan,Tong Gao,Ting He,Chun Chen,Bin Zhang,Xiong Fu,Qiang Huang
Thymol is a phenol monoterpene with potential antifungal, antioxidant and antibacterial activities. Due to the low water solubility and high volatility of thymol, encapsulation serves as an effective tool during application. In the present study, cyclodextrin (CD)-based metal-organic-frameworks (MOFs) were synthesized using α-CD, β-CD, and γ-CD as organic building blocks, and further complexed with thymol to produce three CD-MOF-THY inclusion complexes (ICs). The encapsulation content, release kinetics and fruit preservation effect of ICs were analyzed. Results showed that thymol was well embedded in γ-CD-MOFs, with the highest encapsulation content of 286.7 ± 8.4 mg/g. Release kinetics revealed that CD-MOFs exhibited a controlled release effect toward thymol for 35 days. The release kinetics of three ICs fit the Rigter–Peppas model well, with γ-CD-MOF-THY showing the lowest release rate constant of 2.85 at 50 °C, RH 75%. Moreover, γ-CD-MOF-THY exhibited a remarkable preservation performance on cherry tomatoes with the lowest decay index (18.75%) and weight loss (5.17%) after 15 days of storage, suggesting this material as a potential fresh-keeping material for fruit and vegetable preservation.Keywords:CD-MOF;thymol;encapsulation;controlled release;cherry tomatoes
研究领域:
食品科学
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材料科学
·
农业科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2018
·
IF 5.158
Jie Chen,Meizhen Huang,Lili Kong,Mengshi Lin
This study aimed to develop a jellylike flexible substrate based on nanocellulose decorated with Ag nanoparticles (Ag/NC substrate) and explore its applications for rapid in-situ pesticide detections in fruits and vegetables by surface-enhanced Raman spectroscopy (SERS). The performances of Ag/NC substrate were characterized by rhodamine 6G (R6G). The limit of detection recorded by a portable Raman spectrometer is 10 −8 M. The substrate still exhibited satisfactory sensitivity after 60-day preservation. Jellylike and slightly sticky Ag/NC substrate demonstrated good adaptabilities in attaching to sample surfaces and is suitable for in-situ SERS detection. Two types of pesticides on apple peels and cabbages were detected by rapid in-situ and non-invasive SERS method coupled with Ag/NC substrate. The lowest detectable level was 0.5 ng/cm 2 for thiram and 5 ng/cm 2 for thiabendazole, which were well below the maximum residue levels. These results demonstrate that Ag/NC substrate is sensitive for rapid in-situ multi-pesticide detection in food.
研究领域:
食品科学
·
材料科学
·
分析化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）