Food Bioscience
·
2026
·
IF 6.2
Mingsha Jie,Xingang Lang,Bingxue Liu,Shengkai Lan,Xiaoyue Yue,Junguang Li,Yanhong Bai,Dianbo Zhao
The rapid and accurate detection of pork freshness is critical for food safety and public health supervision, while conventional detection methods suffer from complicated pretreatment and reliance on large laboratory equipment. To overcome these drawbacks, a microneedle array chip (MAC) was successfully constructed through the composite assembly of a microneedle array (MA) and a pH-responsive red fluorescent carbon dots (R-CDs) electrospun membrane. Endowed with excellent tissue penetration capability and rapid interstitial fluid adsorption capacity, the MAC enables a sensitive fluorescence response to pH elevation within 10 min during pork spoilage, accompanied by a distinct fluorescence color transition from purple to pink and finally to red. Coupled with smartphone-based RGB analysis, a linear regression model was established to correlate R values with pH, showing a wide linear range of = 1144. Real-time monitoring of pork freshness at 4 °C and 25 °C confirmed that the MAC enables visual and efficient detection of pork freshness. The developed MAC holds great potential as a portable and point-of-care testing platform for on-site food quality control.
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ULTRASONICS SONOCHEMISTRY
·
2026
·
IF 10.2
Jinxue Hou,Kairan Sheng,Weixuan Guo,Yang Le,Jingxin Sun,Ming Huang
This study evaluated thermosonication combined with germinants and licorice extract (GTL) in the “germination–inactivation–inhibition” strategy to control spore contamination and preserve the quality of ready-to-eat (RTE) chicken breasts. The microbial counts, color, pH, texture, lipid oxidation, and volatile profile of RTE chicken breasts were assessed. The result demonstrated that the GTL treatment significantly reduced the total viable counts (TVC) and Clostridium counts, with TVC remaining below 4 log CFU/g and Clostridium counts lower than in the control (4.42 vs. 7.31 log CFU/g) by day 6 ( p < 0.05). The approach effectively mitigated the changes in color, texture, and moisture distribution, and postponed the increase in pH, lipid oxidation, and volatile nitrogen accumulation in RTE chicken breasts. In addition, a total of 51 volatile compounds were detected by gas chromatography–ion mobility spectrometry (GC-IMS). Results from the E-nose and GC-IMS showed that GTL treatment preserved a more stable volatile profile than high-temperature sterilization, including esters (e.g., 2-methylpropyl acetate), alcohols (e.g., 4-methyl-2-pentanol-D), aldehydes (e.g., 2-methylpropanal), and furans (e.g., 2-ethylfuran-D). These findings demonstrate that GTL is a promising approach for reducing microbial contamination and maintaining the edible quality of RTE chicken breasts under accelerated storage conditions. Download: Download high-res image (169KB) Download: Download full-size image
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Surfaces and Interfaces
·
2025
·
IF 6.3
Shengdong Luo,Lingxiao Liu,Minghao Ma,Muwen Liang,Bin Du,Xihui Mu,Zhaoyang Tong,Zhaofeng Wu,Bing Liu
Atmospheric aerosols contain various pathogenic microorganisms and allergens, which pose significant threats to public health and safety. Traditional wet-wall cyclone aerosol sampling methods are widely used for the sampling and enrichment of aerosol particles owing to their decent enrichment efficiency and good microbial survivability. However, due to the poor inherent wettability of the sampling cup material itself, incomplete coverage and easy rupture of the liquid film during sampling result in suboptimal enrichment, posing a challenge to improving the enrichment efficiency of wet-walled cyclone aerosol sampling. In this work, a robust and durable superhydrophilic coating of functionalized nanoparticles composite SBS adhesive (SC-SBS) was prepared and applied to the inner wall of the aerosol sampler. The coating facilitates the formation of a stable and uniform liquid film due to the interaction between the superhydrophilic surface and the two-phase centrifugal flow, minimizing wall losses and enhancing enrichment efficiency. Under flow rate gradients ranging from 100 to 300 L/min, the device achieved more than double the enrichment efficiency for non-biological aerosol particles of various sizes. For biological aerosol particles ( Bacillus subtilis ), the enrichment enhancement rates exceeded 300 %. This demonstrates its important application prospects in the fields of occupational health and air aerosol sampling.
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FOOD CHEMISTRY
·
2025
·
IF 9.8
Chencheng Wei,Jiheng Zhang,Gaozheng Li,Yi Zhong,Zhaoting Ye,Handong Wang,Kezhi Li,Yuanzi Wu,Yuezhong Wu,Heng Luo,Qi Sun,Zuquan Weng
Formaldehyde (FA), a known carcinogen, is occasionally used illegally as a preservative in seafood, while traditional detection methods for FA residues often fail to meet the practical needs for nondestructive detection. In this study, a approach was developed by combining a portable Raman spectrometer with the InceptionTime deep learning model without sample pretreatment. Model were trained by FA-negative and FA-positive Raman spectral data from the shrimp surface and achieved accuracies of 84.40 % and 85.17 % at detection thresholds of 5 mg/kg (the primary safety detection threshold) and 100 mg/kg (the abuse-level contamination threshold), respectively. Metabolomic analysis and weight visualization indicated that the model particularly focused on Raman peaks associated with specific amino acids and astaxanthin-binding proteins. Two amino acid metabolites, timonacic and spinacine, were also identified as direct indicators of FA addition. Our model offers a field-deployable and practical approach for real-time and on-site FA detection scenario.
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FOOD CHEMISTRY
·
2025
·
IF 9.8
Huie Jiang,Peng Guo,Haiyan Ju,Zhijian Li,Lijuan Chen,Haizhen Mo,Xinhua Liu
The integration of intelligent and active packaging strategies with biodegradable naturally-derived materials represents a significant breakthrough in perennial food-safety/−quality challenges including food-spoilage/−waste/−counterfeiting and packaging-caused environmental pollutions. In this study, we developed a lotus-leaf-inspired, all-natural biomass-based intelligent/active packaging material (gelatin-bacterial cellulose-curcumin composite, L-GBC) using gelatin, bacterial cellulose, and curcumin as functional building blocks. This innovative material integrates multiple functionalities including visual freshness monitoring, anti-counterfeiting authentication, and food preservation in a robust system. Due to the on-demand constructed lotus-leaf-like papillary structure, L-GBC possesses significantly improved hydrophobicity and water-vapor barrier properties, fundamentally eradicating the scientific issue that the hydrophilic natures of the base-materials immensely restrict the packaging applications. Meanwhile, L-GBC exhibits prominent microplastic-free, mechanical properties and accessorial multifunctional active food-preservation characteristics, including ascendant antioxidant capacity, UV-shielding, biodegradability, and antibacterial properties. Furthermore, L-GBC demonstrates high pH sensitivity and fluorescence effects, which can be applied to intelligently detect biogenic amines released during protein-rich food spoilage, enabling real-time monitoring of food freshness and anti-counterfeiting functions. Comprehensive application experiment substantiates that L-GBC effectively maintains pork's freshness for five days, exceeding that of traditional PE film by two days. This study presents the promising potential of new-generation microplastic-free food packaging materials, exhibiting comprehensive versatility, representing a significant advancement in intelligent and active packaging technology.
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Food Bioscience
·
2025
·
IF 5.9
Jindan Zhang,Deyang Yu,Jun Zhao,Yiping Chen,Mingqian Tan
Utilizing natural colorant-based colorimetric sensors for food freshness monitoring is an effective approach to reduce food waste and foodborne illness. However, it is hard to modulate the colorimetric endpoint of the pH-responsive natural colorants to determine the food quality accurately. Herein, Kojic acid (KA)-modulated anthocyanin (ACN)/ hydroxypropyl methylcellulose (HPMC)-sodium alginate (SA) film-based colorimetric sensor was prepared using drop casting method. HPMC and SA provided a homogeneous framework to incorporate ACN. KA, a natural product derived from fermented foods, was introduced to manipulate the colorimetric endpoint of ACN to realize an accurate prediction for the freshness of salmon. Molecular dynamics (MD) simulations and density functional theory (DFT) revealed not only the molecular interactions among KA, ACN, HPMC, and SA, but also the strong interactions between the KA-ANC/HPMC-SA colorimetric sensor and trimethylamine (TMA). Results of UV-vis spectra and TMA response experiments illustrated that the KA can inhibit the deprotonation process and promote the hydration equilibrium of ACN, which makes the KA-ACN/HPMC-SA colorimetric sensors exhibit different color responses comparing to the pristine ACN/HPMC-SA. Among all colorimetric sensors, the 1KA-ACN/HPMC-SA exhibited the most sensitive response to TMA with a limit of detection (LOD) of 15.79 μM. When applied in the real-time monitoring of the freshness of salmon at 4°C, the 1KA-ACN/HPMC-SA showed the most significant total color difference (ΔE) of 31.28±0.76 and synchronous color change with the spoilage of salmon after 10 days. The degradation and seed germination experiments of the colorimetric sensors indicated that the colorimetric sensors were environmentally degradable and had good biosafety. This work proposes a novel and effective strategy to modulate the colorimetric endpoint of ACN, and the prepared colorimetric sensors show applicable potential in the quality monitoring of salmon.
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Qiqi Xu,Pengfei Bi,Yingyue Tan,Jilong Ma,Xiong Zhang,Huijuan Zhang,Jinling Ma,Yu Wang
Aqueous zinc-ion batteries are promising candidates for large-scale energy storage due to their low cost and high safety. However, their development is restricted by uncontrolled zinc dendrite growth. To address this, this study developed a novel photocurable polydimethylsiloxane (PDMS) resin for 3D printed separators to guide zinc deposition. 3D printing enabled the one-step fabrication of tailored 3D structured PDMS separators with zinc-philic functional groups (–COO–, C–O–C) as well as uniform pores (triply periodic minimal surface (TPMS 3D-dia) and simple cubic pore (3D-sc)). These separators facilitated uniform zinc deposition. Finite element analysis revealed that the 3D-dia separator exhibited more uniform current density, superior fluid dynamics, and higher mechanical strength than the 3D-sc. In electrochemical tests, the Zn||Zn symmetric battery with the 3D-dia separator proved a stable cycling life of 520 cycles at 1 mA cm −2 , significantly outperforming the glass fiber separator (101 cycles). This work presents a novel strategy for preparing and modifying separators, as well as a facile, effective approach to protecting metal anodes.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2026
·
IF 7.7
Na-Na Ran,Quan Luo,Hong-Wei Li,Yuqing Wu
Herein, a novel ratiometric fluorescent nanosensor was prepared by in-situ incorporation of Eu 3+ into nitrogen-rich carbon dots (Eu-CDs) via a one-step hydrothermal route. The obtained Eu-CDs display dual emission: a strong blue band at 440 nm (carbon core) and a weak red band at 615 nm ( 5 D 0 → 7 F 2 transition of Eu 3+ ). Upon titrating oxytetracycline (OTC) into the system, the blue signal remained invariant as an internal reference, whereas the red emission dramatically enhanced by the OTC-mediated antenna effect. The intensity ratio ( I 615 / I 440 ) increases linearly with OTC concentration over 1.0 – 50 µM, affording a limit of detection of 35 nM. Concomitantly, the dispersion exhibits a naked-eye color switch from blue to red under 365 nm UV illumination. Mechanistic investigations reveal that the specific recognition originates from (i) coordination between Eu 3+ and the β-diketone moiety of OTC and (ii) hydrogen-bonding interactions between OTC and the CDs surface. Although the probe is highly selective toward OTC over common ions and amino acids, it suffers from cross-reactivity among tetracycline antibiotics. This limitation was overcome by coupling the ratiometric read-out with linear discriminant analysis (LDA) of dual-mode (fluorescence and absorption) data, enabling 100% correct classification of OTC, tetracycline (TC), chlortetracycline (CTC), and doxycycline (DC) in both individual and mixed samples. The proposed strategy furnishes a simple, green and low-cost route to Eu-CDs and establishes a robust, portable platform for ultrasensitive quantification and discriminative sensing of tetracycline antibiotics in complex matrices.
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Foods
·
2026
·Vol. 15
·期 8
·1453
·
IF 6
Kelan Liu,Shasha Zhang,Xiaoxue Han,Yuye Zhong,Shaoyun Huang,Xianwen Ke
To reduce food waste and mitigate health risks from accidentally consuming spoiled food, freshness-indicating technologies are increasingly demanded. However, conventional colorimetric-based freshness-indicating packaging is limited by instability, subtle color changes, and complex production processes. This study presents a curcumin-based ink suitable for eco-friendly polylactic acid (PLA) food packaging films enabling real-time shrimp freshness monitoring via integrated intelligent packaging. The ink comprised curcumin as the indicator, ethyl cellulose (EC) and polyvinyl butyral (PVB) as binders, and polyethylene glycol 400 (PEG 400) to regulate permeability. Excellent printability was demonstrated by fineness, initial dryness and fluidity tests. It also demonstrated good thixotropic, viscosity, and flow curve properties. Printing minimally affected the PLA films’ mechanical and barrier properties. The indicator label showed high sensitivity, rapid response, and excellent reversibility to ammonia vapor. Practical application in monitoring shrimp spoilage at 25 °C and 4 °C revealed a strong correlation between the distinct color transition of the label and the increase in total volatile basic nitrogen (TVB-N) content and pH value, providing a reliable visual warning before obvious spoilage signs appeared. This work provides a viable integrated indicator packaging strategy for developing intelligent packaging, offering significant potential to reduce food waste and enhance supply chain transparency for perishable goods.
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MICROCHEMICAL JOURNAL
·
2023
·
IF 4.8
Jiangru Wang,Yan Yang,Qirui Shen,Dazhong Shen,Qi Kang
Imprinted cavities are the cornerstones for the recognition specificity of molecularly imprinted polymers (MIPs). But the investigations related to the recognition behavior of imprinted cavities within MIPs are scarce due to the inevitable non-specific adsorption on the outside surface of MIPs. Herein, we reported a differential strategy to investigate the pure specific adsorption into imprinted cavities within MIPs, demonstrated by using for malachite green (MG) as the model template. The adsorption isotherm and kinetics of MG into the imprinted cavities are determined by a differential colorimetry. A smartphone-based analytical device with rotating seven colorimetric tubes was fabricated to measure the absorbance on-line, monitoring simultaneously the amounts of MG adsorbed in six channels without terminating adsorption processes. The pure specific recognition by imprinted cavities within MIPs enhances the anti-interference ability and sensitivity for MG determination. The smartphone-based absorbance device with an optical path of 10 cm was applied to the field determination of MG in actual water samples, with the detection limit of 1.1 μg L −1 and the recovery in the range of 94.1 ∼ 105%. The difference in volume of eluent has little influence on absorbance measurement in the portable absorbance device.
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Journal of Agriculture and Food Research
·
2023
·
IF 3.8
Simin Fan,Honglei Mu,Haiyan Gao,Hangjun Chen,Weijie Wu,Xiangjun Fang,Ruiling Liu,Ben Niu
Intelligent packaging was prepared and evaluated to determine the quality of shiitake mushrooms using colorimetric sensing. Bromothymol blue/methyl red composite dyes were incorporated into polyvinyl alcohol (PVA) to form a porous indicator via freeze-drying. The PVA indicator was then modified with polylactic acid (PLA). The porous structure of the indicator was investigated using scanning electron microscopy (SEM) imaging, and it was found that the hydrophobicity of the PVA/PLA indicator was significantly improved following modification. A sensitive colorimetric response toward the presence of CO 2 in packaging was achieved using the naked eye. During investigations into the potential application of this system, the ΔE value of the indicator was found to correlate significantly with the quality indices (i.e., the browning index, firmness value, malondialdehyde content, and sensory score) of shiitake mushrooms during storage. Based on these correlations, qualitative identification of the freshness of shiitake mushrooms was studied using principal component analysis, while a prediction model of this freshness was obtained by partial least squares regression. This indicator, therefore, shows potential for application in intelligent packaging for the detection of CO 2 due to the clear visualization of color changes by the naked eye.
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BIOCHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 3.9
Jufen Yan,Pei Wang,Longxin Wang,Qi Jin,Abdallah S. Ali,Yongsheng He,Ying Wang,Yuxuan Sun,Aoqiang Li,Waly Adwy,Rasha H. Ahmed,Xinya Han
Synthetic dyes from textile, paper, leather, and plastic processing, etc. are the majority of the colored effluents and have a harmful impact on human health and environment. Dye biosorption through endophytic fungi will be a challenge. A new fungus isolated from blueberry pulp was identified morphologically and genetically as Penicillium janthinellum LM5. It was utilized for the biosorption of synthetic dyes by forming mycelium particles with efficient decolorization properties in the dye solution. The results of decolorization experiments exhibited that dye type, pH, temperature and time were the important factors and the best decolorization condition on Congo red was pH 6.0, 30 ℃ and 48 h. Moreover, LM5 can achieve 90% decolorization rate even under the high salt concentrations of 200 mg/mL. Based on spectral analysis , the decolorization of Congo red was mainly attributed to the biosorption of mycelium and its pellet structure. Additionally, the fungus adsorbed Congo red can be as an excellent electrode material with a long-cycle performance and stable capacitance property, being a good way for recycling. In summary, this research employed a novel dye treatment method with simultaneous culture and decolorization through an endophytic fungus LM5, being a promising biomaterial in the application of dye wastewater treatment .
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