Foods
·
2026
·Vol. 15
·期 16
·2830
·
IF 6
Haoyue Wu,Yi Zhou,Huaxing Xu,Zhaoming Wang,Xingguang Chen,Hui Zhou
Fresh pork remains susceptible to psychrotrophic spoilage during superchilled storage. Although oregano essential oil (OEO), nisin, and active absorbent pads have each been studied, their effects on spoilage-community proliferation and concurrent quality loss remain poorly resolved. Here, we coupled longitudinal 16S rRNA gene profiling with conventional microbiological and quality measurements to evaluate a poly(vinyl alcohol)/soy protein isolate pad containing OEO-loaded soluble soybean polysaccharide-nisin nanoparticles (PS-NPs). Pork was stored at −1 °C for 24 days without a pad (CK), with a nanoparticle-free pad (PS), or with PS-NPs. Bacterial communities in CK and PS-NPs were profiled alongside total viable count, TVB-N, TBARS, protein carbonyls, color, water-holding capacity, and sensory quality. Compared with CK, PS-NPs slowed the increase in viable counts and delayed physicochemical and sensory deterioration. On day 24,Pseudomonasrelative abundance was 39.48% with PS-NPs and 51.02% in CK. TBARS and protein carbonyl contents were 36.96% and 19.44% lower than CK, respectively, while cooking loss was 28.49% versus 32.18%. Among the evaluated taxon-quality pairs,Pseudomonas psychrophilashowed the strongest positive association with protein carbonyl content. Unlike earlier performance-focused studies, this work links packaging-associated community shifts with concurrent chemical, physical, and sensory changes under superchilling. The findings support PS-NPs as a preservation strategy.
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POLYMER
·
2026
·
IF 5.1
Xu Hu,Kok Hoong Wong,Nai Yeen Gavin Lai,Haibin Yu
The low reactivity, easy hydrolysis, semi-crystallization and rigidity of polylactide (PLA) polyols inhibit their applications, especially in polyurethane (PU) preparation. This work proposes a poly(ε-caprolactone)-polylactide-poly(ε-caprolactone) (PCL-PLA-PCL) triblock diol to enhance the reactivity and flexibility of PLA diol while maintaining degradability, thereby expanding its applications. However, when synthesizing an oligomeric PCL-PLA-PCL triblock diol by cationic ring-opening polymerization catalysed by trifluoromethanesulfonic acid (TfOH) or methanesulfonic acid (MSA), numerous secondary hydroxyl groups (OH) were detected. Unlike synthesizing a high-molecular-weight polymer, monomer amount is limited during oligomerization, leading to distinct competition between initiation and propagation and yielding a PLA diol residue with secondary OH. Several factors, including temperature and the amounts of catalyst and monomer, were investigated to improve the primary OH content. Leveraging the inhibitory effect of excessive TfOH on the propagation rate of CL under limited monomer addition, PCL-PLA-PCL diol with a primary OH content of up to 90 % was obtained. On the contrary, excessive MSA, with a relatively weaker acidity, cannot effectively increase the primary OH content, whereas an excessive monomer amount remains helpful. The findings on the differences between synthesizing a high-molecular-weight PCL-PLA-PCL block copolymer and an oligomeric one may facilitate the construction of more high-performance block co-oligomers for drug delivery and PU applications. Compared with PLA diol, the PCL-PLA-PCL diol (∼2000 g/mol, CL: LA = 1: 1, with 90.1 % primary OH) has no crystallization behaviour, has reduced viscosity and much increased reactivity, making it a promising alternative to pure PLA diol for broader PU applications.
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POSTHARVEST BIOLOGY AND TECHNOLOGY
·
2026
·
IF 7.3
Xin Zhang,Dapeng Li,Ke Jiang,Chao Zeng,Mi He,Xiancheng Ma,Chongshan Yang,Ling Li,Tao Wen
Early detection of Bactrocera dorsalis ( B. dorsalis ) infestation in citrus is challenging due to the asymptomatic nature of initial larval stages. Colorimetric sensor arrays (CSAs) are promising for non-destructive detection of B. dorsalis infestations in citrus, yet they still face limitations in reliably identifying the key volatile organic compounds (VOCs) released by infested citrus. In this study, we developed a MOF-enhanced colorimetric sensor array integrating pH-sensitive dyes into ZIF-7 nanoparticles for non-invasive detection. The array detected VOCs associated with early infestation, including D -limonene, decanal, and linalool, identified via GC-MS. The dye/ZIF-7 composite CSA exhibited enhanced sensitivity compared to the pure dye sensor array. Furthermore, across the 4-day test period, infested samples registered a progressive rise in total Euclidean distance (ED) of color change, reaching a 171.7-unit increase over healthy controls on day 4. To enhance the accuracy and efficiency of infestation detection, we implemented a machine-learning pipeline using Dung Beetle Optimizer (DBO) for feature selection and Tree-structured Parzen Estimator (TPE) for hyperparameter tuning. Consequently, the XGBoost classifier achieved a peak test accuracy of 97.15 %, enabling reliable detection during the early stage of infestation. Overall, this study offers a non-destructive and cost-effective approach for batch-mode early detection of B. dorsalis infestation in citrus, advancing the potential for enhanced postharvest monitoring and pest management strategies.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.7
Yi-Qi Liu,Qiao-Wei Song,Shui-Dong Zhang,Chang-Ying Hu
To address consumer concerns regarding exudate from fresh chicken, this study aims to develop an active food packaging material with excellent antibacterial properties, mechanical strength, and moisture management capabilities by preparing oxidized corn starch/polyvinyl alcohol/agarose (OST/PVA/AG) composite pads using oxidized corn starch (OST) as a functional enhancer. Fourier transform infrared spectroscopy and X-ray diffraction analyses confirmed that OST was successfully incorporated into the PVA/AG matrix through intermolecular hydrogen bonding and esterification cross-linking reactions. These interactions enhanced intermolecular forces and reduced the material's crystallinity. Microscopic morphology revealed that the composite pads exhibited a homogeneous porous structure, with thickness and color varying with increasing OST content. Performance tests indicated that the antibacterial efficacy against E. coli and S. aureus improved significantly in a dose-dependent manner as the OST content increased. Considering the overall performance, the composite pad containing 1% OST demonstrated optimal antibacterial effects (inhibition rate exceeding 99%), mechanical properties (tensile strength of 0.54 MPa, elongation at break of 72%), and water absorption capacity (4.5 g/g), with a cell viability of 85%, indicating good biocompatibility. Chicken preservation experiments further confirmed that the OST/PVA/AG-IV pad effectively absorbed exudate and inhibited microbial growth. After 6 days of storage, the total volatile basic nitrogen (TVB-N) value of the chicken was maintained at 14.81 mg/100 g, and the total viable count remained below the spoilage threshold, significantly extending the shelf life by approximately 1 day compared to the control group. These results confirm the promising application potential of OST/PVA/AG composite pads in the field of meat preservation.
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ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Antong Ma,Wenwen Han,Xu Yan,Shengli Fan,Xiao-Qi Xu,Yapei Wang
Benefiting from the advantages of excellent biocompatibility and remarkable antifungal performance, plant essential oils have recently become promising alternatives to conventional fungicides, yet suffer from the challenges of high volatility, short-lived efficacy, and poor target specificity. In this research, a novel type of essential-oil-based fungal inhibitor was developed, which presented a microenvironment-adaptive fungicidal behavior triggered by fungal growth. With stimulus-responsive cleavable linkages on the backbone, such an inhibitor could remain dormant under normal conditions while releasing antifungal essential oil with the presence of physiological water and acidic metabolites produced by fungi. The favorable properties of reduced volatility and controllable release performance endowed the fungal inhibitor with a long-term fungicidal performance for the preservation of cultural relics against mold contamination. This innovative concept of “microenvironment-adaptive fungal inhibitor triggered by fungi” offers a promising platform for developing next-generation fungicidal materials that are capable of controlling mold contamination in settings where stringent environmental and safety standards are necessary.
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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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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-X
·
2026
·
IF 8.2
Qingyang Zhang,Meiyu Zheng,Zhen Lu,Kangyu Zhao,Shu Wang,Bin Li,Zhigang Hu,Sihong Zhang,Dongping He,Fenfen Lei,Li Zhou
Emulsification was found to enhance the nutritional value and flavor of bovine bone broth, although the specific processing conditions and their impact on amino acid profiles and flavor compounds remained unclear. To address this knowledge gap, this study identified critical parameters for producing clear broth (simmering time of 4 h, temperature of 115 °C, bone size of 4.0 cm, and liquid-to-solid ratio of 1:4) and established optimal conditions for white broth (a shear rate of 5000 r/min, emulsification pressure of 18 kPa, temperature of 50 °C, and duration of 90.0 min). Analysis identified 17 amino acids in both broths, while volatile compound profiling revealed 57 and 64 distinct compounds in the clear and white broths, respectively. The findings provide a theoretical foundation for the high-value utilization of bovine bones.
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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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LANGMUIR
·
2023
·
IF 3.9
Hongjie Chen,Junlin Chen,Yang Liu,Bingrui Li,Haofei Li,Xing Zhang,Chuhan Lv,Hua Dong
NH3 gas in human exhaled breath contains abundant physiological information related to human health, especially chronic kidney disease (CKD). Unfortunately, up to now, most wearable NH3 sensors show inevitable defects (low sensitivity, easy to be interfered by the environment, etc.), which may lead to misdiagnosis of CKD. To solve the above dilemma, a nanoporous, heterogeneous, and dual-signal (optical and electrical) wearable NH3 sensor mask is developed successfully. More specifically, a polyacrylonitrile/bromocresol green (PAN/BCG) nanofiber film as a visual NH3 sensor and a polyacrylonitrile/polyaniline/reduced graphene oxide (PAN/PANI/rGO) nanofiber film as a resistive NH3 sensor are constructed. Due to the high specific surface area and abundant NH3 binding sites of these two nanofiber films, they exhibit good NH3 sensing performance. However, although the visual NH3 sensor (PAN/BCG nanofiber film) is simple without the need of any detecting facilities and quite stable when temperature and humidity change, it shows poor sensitivity and resolution. In comparison, the resistive NH3 sensor (PAN/PANI/rGO nanofiber film) is of high sensitivity, fast response, and good resolution, but its electrical signal is easily interfered by the external environment (such as humidity, temperature, etc.). Considering that the sensing principles between a visual NH3 sensor and resistive NH3 sensor are significantly different, a wearable dual-signal NH3 sensor containing both a visual NH3 sensor and resistive NH3 sensor is further explored. Our data prove that the two sensing signals in this dual-signal NH3 sensor mask can not only work well without interference with each other but also complement each other to improve the sensing accuracy, indicating its potential application in non-invasive diagnosis of CKD.
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LWT-FOOD SCIENCE AND TECHNOLOGY
·
2022
·
IF 6.056
Jin Wang,Qijun Wang,Liang Xu,Da-Wen Sun
Effects of extremely low frequency pulsed electric field (ELF-PEF) on the total volatile basic nitrogen (TVB-N), thiobarbituric acid reactive substance (TBARS), total microorganism number, protein oxidation and denaturation, enzymatic activity, microstructure, and sensory quality of tilapia fillets during cold storage at 4°C for 6 days are evaluated. The results show that the TVB-N value and total microorganism number in the treated group are within the international standard (< 20 mg/100 g, < 7 log 10 CFU/g) during the storage, and the shelf-life of the treated group is extended by 1 - 2 days as compared with the control. In addition, ELF-PEF treatment inhibits sample quality deterioration during storage, as reflected by a small change in colour, slow softening of texture, less protein oxidation and denaturation, lower endogenous enzyme activity, and tighter microstructure compared to the control, indicating the promising of ELF-PEF treatments for fish preservation during cold storage.
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危险品化学品经营许可证（带存储）