JOURNAL OF FOOD COMPOSITION AND ANALYSIS
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2024
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IF 4
Zhikun Zhang,Bo Xin,Liwei Bai,Qingju Liu
Ethephon (ETH), is an important phytohormone used as a pesticide in agriculture, the overuse of which has caused numerous health problems due to its toxicity. There is an urgent requirement to establish a testing platform that is convenient, accurate, and sensitive in detecting ETH. Herein, we devised an imine groups-based covalent organic framework (COF) with methoxy group as a fluorescent probe for ETH detection. This COF contained a rich imine structure which facilitated acids-responsive characteristics, leading to increased fluorescence response when protonated. Upon exposure to ETH, there was a notable increase at 510 nm, triggering a color transition in fluorescence from yellow to green. This change in fluorescence intensity was directly correlated with ETH concentrations ranging from 0.1 mg/L to 400 mg/L, with a limitation of detection as low as 0.05 mg/L. The practicality was demonstrated through the detection of ETH in strawberries, pepino melon, and persimmons, showing its potential for broad application in ETH analysis.
研究领域:
农业科学
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分析化学
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食品科学
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产品关联
DOI
高影响因子
MICROCHIMICA ACTA
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2025
·Vol. 192
·期 1
·1-10
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IF 5.3
Zhang Zhikun,Bai Liwei,Han Jilong,Li Zhengjie,Liu Qingju
For the first time a novel fluorescent La@ZrMOF nanomaterial was synthesized for the convenient and visual detection of ethephon (ETH) based on the ligand–metal charge transfer process. The fluorescence signal gradually enhanced as the concentration of ETH increased, accompanied by a change in the color from colorless to blue. The assay can be completed within 75 min with a detection limit of 0.03 mg/L. A paper-based approach for the rapid and visual determination of ETH has also been devised, enabling the efficient used in a variety of actual products, with apples, pears, and tomatoes as examples. It proved to be simple, easy to use, and sensitive, and has the potential for further uses of ETH detection. Graphical
研究领域:
植物生理学
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分析化学
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
·
IF 8.5
Xiangyu Jiao,Xiaona Chong,Haiyu Du,Mengyao Yang,Zhu Zhu,Zhengfeng Ma,Yongqiang Wen
This study focuses on the development and application of tea polyphenol-loaded chitosan/polyaspartic acid nanoparticles (TP@CS/PASP-Nps) embedded within polyvinyl alcohol (PVA) nanofibers to extend the shelf life of fruit. The nanofibers were fabricated using electrospinning, which enhanced the stability and uniform dispersion of the nanoparticles. Experimental results demonstrated that the TP@CS/PASP nanoparticles exhibit significant pH and protease-responsive release of TP, with a cumulative release of 56.22 % at pH 5.0 after 120 h, compared to 26.70 % at pH 7.0. In the presence of 1 mg/mL protease, the release of TP increased by 25.31 %. Furthermore, the nanofibers displayed excellent antimicrobial properties, inhibiting the growth of Escherichia coli , Staphylococcus aureus , and Botrytis cinerea , and exhibited antioxidant activity with a DPPH scavenging rate of 43.1 % at 10 mg/mL. When applied to strawberries, the nanofibers significantly prolonged shelf life, maintaining a 0 % mold growth rate over six days compared to 100 % in the control group. This innovative packaging system presents a promising solution for the intelligent control of active substance release, offering valuable insights into the application of stimulus-responsive nanoparticles in food preservation.
研究领域:
食品科学
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材料科学
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生物技术
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产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
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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
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Mingming Zhao,Huizi Lu,Zhiheng You,Huayun Chen,Xiao Wang,Yaqing Zhang,Yixian Wang
Developing a colorimetry-based artificial scent screening system (i.e., an olfactory visual sensing system) with high sensitivity and accurate pattern recognition for detecting fruit ripeness remains challenging. In this work, we construct a flexible dye/CelluMOFs-based sensor array with improved sensitivity for on-site detection of characteristic gases of fruits and integrate a densely connected convolutional network (DenseNet) into the sensor array, enabling it to recognize unique scent fingerprints and categorize the ripeness of fruits. In the system, CelluMOFs are synthesized through in situ growth of γ-cyclodextrin metal–organic frameworks (γ-CD-MOFs) on flexible fiber filter paper to fabricate a uniform, flexible and porous dye/CelluMOFs sensitive membrane. Compared to the pristine filter paper, the CelluMOFs exhibit increased porosity with a 62 times higher specific surface area and a 3-fold increase in dye loading capacity after 12 h of adsorption. The prepared dye/CelluMOFs sensing film shows outstanding mechanical and detection stability with negligible deviation after 100 cycles of rubbing. The colorimetric visualization arrays with multiple colorimetric dye/CelluMOFs chips, enable the sensitive recognition and detection of nine kinds of characteristic fruit odors and achieve a high response at 8–1500 ppm of trans-2-hexenal, showcasing remarkably low gas detection thresholds. On the basis of the ppm-level limit of detection with high sensitivity, the fabricated colorimetric sensor arrays are typically used for in situ assessment of fruit ripeness by integrating DenseNet. This approach achieves a satisfactory classification accuracy of 99.09% on the validation set, enabling high-precision prediction of fruit ripeness levels.
研究领域:
食品科学
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材料科学
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人工智能
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产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
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2019
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IF 5.399
Yisheng Chen,Caihong Huang,Bernhard Hellmann,Zhengyu Jin,Xueming Xu,Guosheng Xiao
This study presented a HPTLC platformed luminescent biosensor system for screening captan residue. First, the potential bio-effects of layers materials on the detectability of a luminescent bacteria Photobacterium phosphoreum (ATCC 11040) as the sensor cell were assessed. From comparison, it was noteworthy that the combination of sensor cells with normal silica gel layer exclusively gave outstanding detectability (<10 ng/zone). On this basis, HPTLC mediated separation and biosensing was further optimized. Then, the obtained graphic results were digitally quantified via software processing, offering satisfactory selectivity, linearity ( R 2 = 0.9901 within 10–80 ng/zone) and sensitivity (0.5 mg/kg against MRLs ≥ 6 mg/kg). Additionally, the performance of the established method was validated with different fruits (recover rates 75–96%, RSD < 11.8%). Meanwhile, it was demonstrated that detectability of this hybrid system would be tuneable by altering the combination of bacteria strains and layer materials, which was meaningful to strengthen the usability of microbial biosensors.
研究领域:
分析化学
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环境科学
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食品科学
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产品关联
DOI
PubMed
高影响因子
Food Packaging and Shelf Life
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2020
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IF 4.244
Shenyu Yang,Qiuju Miao,Yiping Huang,Peishan Jian,Xiaoping Wang,Mei Tu
Cinnamaldehyde (Ci) is a highly effective natural broad-spectrum antibacterial agent and preservative, but its strong volatility and short duration have a negative impact on its application in the field of agriculture and food. In order to improve these properties, porous PHA/CS microspheres were prepared by using polyhydroxyalkanoate (PHA) and chitosan (CS) as basic materials based on Poiseuille flow principle, and PHA/CS scaffolds were obtained by sintering the microspheres at low temperature. The effect of the ratio of PHA and CS on the particle size and charge of microspheres was studied. It was found that the particle size increased with the increase of the ratio of PHA and CS, while the surface charge changed from negative to positive. The SEM results showed that the microspheres exhibit a porous structure, and the CS adsorb on the surface of microspheres resulted in the reduction of surface pores. FTIR spectrum confirmed that there was only physical interaction between PHA and CS. PHA-based microspheres exhibited high encapsulation efficiency and loading capacity for Ci. Ci-loaded PHA-based microspheres and scaffolds had different release rates, and the release time can be adjusted in the range of 7–60 days. Antimicrobial activity and fruit preservation ability of the loaded Ci microspheres showed that it can effectively inhibit the growth of bacteria and extend the shelf life of the strawberry. This novel Ci carrier with good biocompatibility, biodegradability and adjustable release rate would have a broad application in the field of food preservation and antibacterial.
研究领域:
食品科学
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材料科学
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微生物学
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DOI
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Xishun Peng,Yiheng Yuan,Anjiang Lu,Cunwei Wang,Caizhen Zu,Haili Zhang,Zhongchen Bai
Glyphosate (Gly) residues in agricultural products have a serious health risk, so it is urgent to seek a sensitive and convenient method for recognizing Gly residues in food. In this study, we proposed an electrochemical surface-enhanced Raman spectroscopy (EC-SERS) sensor of polyaniline/reduced graphene oxide/Ag/Cu (PANI/RGO/Ag/Cu) film to detect Gly residues. The EC-SERS sensor of PANI/RGO/Ag/Cu film had a large specific surface area, which could increase the binding sites of cu 2+ /Gly clathrates for boosting specifically its SERS signal. Moreover, Ag/Cu nanoparticles on the surface of film could effectively increase the differential pulse voltammetry signal and SERS signal of Gly molecules. The limit of detection of EC-SERS sensor to Gly could reach 1.9 nM. In addition, the EC-SERS sensor we prepared could also sensitively identify Gly residues on fresh fruit peels. The PANI/RGO/Ag/Cu film we proposed in this paper has great potential for selective and accuracy detecting Gly residues in agricultural products.
研究领域:
食品科学
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分析化学
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Shuang Tao,Weikang Cai,Jingtian Han,Chenjie Shi,Zhenggang Fang,Chunhua Lu,Chao Xu,Wenjun Li,Zhongzi Xu
Nowadays, food safety is still facing great challenges. During storage and transportation, perishable goods have to be kept at a low temperature. However, the current logistics still lack enough preservation ability to maintain a low temperature in the whole. Hence, considering the temperature fluctuation in logistics, in this work, the passive radiative cooling (RC) technology was applied to package to enhance the temperature control capability in food storage and transportation. The RC emitter with selective infrared emission property was fabricated by a facile coating method, and Al2O3 was added to improve the wear resistance. The sunlight reflectance and infrared emittance within atmospheric conditions could reach up to 0.92 and 0.84, respectively. After abrasion, the sunlight reflection only decreased by 0.01, and the infrared emission showed a negligible change, revealing excellent wear resistance. During outdoor measurement, the box assembled by RC emitters (RC box) was proved to achieve temperature drops of ∼9 and ∼4 °C compared with the corrugated box and foam box, respectively. Besides, the fruits stored in the RC box exhibited a lower decay rate. Additionally, after printing with patterns to meet the aesthetic requirements, the RC emitter could also maintain the cooling ability. Given the superior optical properties, wear resistance, and cooling capability, the emitter has great potential for obtaining a better temperature control ability in food storage and transportation.
研究领域:
材料科学
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食品科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMOSPHERE
·
2024
·
IF 8.1
Xinjie Li,Sisi Yu,Ke Huang,Wenchao Zhu,Gang Ye,Jialiang Qi,Yanbo Shu,Xirui Chen,Zenghan Wang,Saiheidaiguli Maimaiti,Hongwei Jin,Shaoyou Lu
The extensive use of neonicotinoids (NEOs) in agricultural production has led to their pervasive presence in various environmental matrices, including human samples. Given the central role of fruits and vegetables in daily human diets, it is crucial to evaluate the levels of NEOs residues and their potential health risks. In this study, 3104 vegetable samples and 1567 fruit samples from the Shenzhen city were analyzed. Using the relative potency factor (RPF) method, the residue levels of six representative neonicotinoids, including imidacloprid (IMI), acetamiprid (ACE), thiamethoxam (THM), dinotefuran (DIN), clothianidin (CLO), thiacloprid (THI), were systematically evaluated. The estimated daily intake (EDI), hazard quotient (HQ), and hazard index (HI) for both children and adults were calculated to gauge the prevalence and potential health risks of NEOs in fruits and vegetables. Acetamiprid (ACE) was the most frequently detected NEO in vegetables (69.4%) and fruits (73.9%), making it the predominant contributor to total residues. Further analyses indicated notably higher levels of imidacloprid-equivalent total neonicotinoids (IMI RPF ) in root and tuber vegetables (3025 μg/kg) and other fruits (243 μg/kg). A significant strong positive correlation (r = 0.748, P < 0.05) was observed between thiamethoxam (THM) and clothianidin (CLO), possibly due to their shared metabolic pathways. Although the mean HI values for adults and children from daily fruit (adults: 0.02, children: 0.01) and vegetable (adults: 0.02, children: 0.03) intake were generally below safety thresholds, some maximum HI values exceeded these limits, indicating that the potential health risks associated with NEOs exposure should not be overlooked.
研究领域:
环境科学
·
毒理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2021
·
IF 4.821
Jing Zhao,Jingjing Pu,Xiaopeng Wu,Boyu Chen,Yan He,Yue Zhang,Bingjun Han
Matrix effect (ME) is a critical factor that can significantly compromise the accuracy of pesticide residue analyses performed using ultra-performance liquid chromatography–tandem mass spectrometry (UPLC-MS/MS). In this study, five pesticides of different types, namely difenoconazole (triazoles), chlorpyrifos (organophosphates), thiram (dithiocarbamates), carbaryl (carbamates), and pyraclostrobin (strobilurins), were selected to investigate the UPLC-MS/MS MEs in five typical tropical fruits. The MEs and possible mechanisms of the main influence factors, i.e., pH value and sugar content, were studied for the pesticide residues in the tropical fruits. The proposed method was validated in terms of linearity, limit of detection (LOD), recovery, and precision. In the range of 0.005–0.5 μg mL −1 , the coefficients of determination (r) were better than 0.999, while the LODs and recoveries ranged from 0.16 to 4.4 μg kg −1 and from 75% to 120%, respectively. Results show that among the five typical tropical fruits, the ME was largest in longan, followed by that in banana; pineapple and guava showed lower MEs than those in banana, whereas papaya had the lowest. Chlorpyrifos has the largest ME, followed by thiram and difenoconazole, and the other pesticides have very small MEs. Moreover, the MEs can be reduced by adjusting the pH value and sugar content of the sample matrix. This study can be applied to assess the influence of MEs on the analysis results.
研究领域:
分析化学
·
食品科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Yongheng Ren,Yang Chen,Jiangfeng Yang,Jinping Li,Libo Li
The removal of trace C 2 H 4 at high relative humidity has significant importance for the preservation of fruit; however, owing to the severe storage environment and competitive adsorption of high humidity water vapor and carbon dioxide, few suitable adsorbent materials are currently available for this application. Herein, silver-loaded silicalite-1 sorbent (S-1@Ag) was synthesized via an in-situ silver modification method to enhance its interaction with ethylene. By adjusting the amount of silver source to 0.94 wt%, the ethylene uptake of S-1@Ag at P/P 0 of 0.01 was sixteen times greater than unmodified silicalite-1. S-1@Ag prepared using the in-situ method exhibits a uniform distribution of Ag + that enhances the recognition of ethylene, resulting in an excellent ability to capture ethylene at low pressures. Crucially, S-1@Ag(0.94 %) was unaffected by the presence of water vapor and carbon dioxide in its application environment, and exhibits the best preferential adsorption of ethylene under low pressures. Dynamic breakthrough tests under humid conditions demonstrated that S-1@Ag(0.94 %) captures trace ethylene four times more effectively than S-1@Ag, even under different gas mixtures (C 2 H 4 /N 2 , 0.1/99.9, v/v; C 2 H 4 /CO 2 /N 2 , 0.1/0.1/99.8 and 0.1/1/98.9, v/v/v). Furthermore, banana storage experiments show that S-1@Ag(0.94 %) slows the decay time of the fruit and improves its storage life.
研究领域:
材料科学
·
食品科学
✓ 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）