LWT-FOOD SCIENCE AND TECHNOLOGY
·
2026
·
IF 7.1
Tsekwi Gracious Rinwi,Wenhong Gao,Qi-Jun Wang,Ke Shen,Xiaotong Wang,Ning Wang,Zhong Han,Ji Ma
Combination of PEF and isochoric preservation improved shelf-life stability. • Immersion in citric and ascorbic acid solutions caused hypotonic swelling. • Phenolic compounds were better retained with PEF and isochoric preservation. • Combined PEF and isochoric preservation synergistically reduced enzymatic browning and microbial growth. Minimally processed litchi is prone to quality loss due to its high moisture content, biochemical activity, and vulnerability to microbial growth. This study examined the combined effects of PEF pre-treatment and isochoric freezing (−3 °C, 235 kPa) on the quality and shelf-life of minimally processed litchi, with additional tests using ascorbic and citric acid solutions to assess their impact on preservation. Results showed that samples treated by vacuum packaging followed by isochoric freezing (VP + IF) and PEF pre-treatment combined with vacuum packaging and isochoric freezing (PEF + VP + IF) effectively maintained tissue integrity and enhanced water retention, thereby stabilising key quality parameters, including color, pH, ascorbic acid, and total phenolics, and slight titratable acidity decreased. Notably, the PEF + VP + IF treatment exhibited more pronounced positive effects, likely due to enhanced tissue permeability and improved mass transfer. Conversely, samples treated by IVP + IF and PEF + IVP + IF exhibited hypotonic swelling, resulting in significant reductions in texture, total soluble solids, ascorbic acid content, water-holding capacity, and enzyme activity, along with a slight increase in total phenolics. Nevertheless, microbial counts decreased across all treatments, with PEF + IVP + IF achieving the lowest microbial load.
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高影响因子
FOOD RESEARCH INTERNATIONAL
·
2026
·
IF 8.8
Wei Liu,Lin Wang,Kunyi Wang,Xinzhi Liang,Ting Liu,Jingxuan Tan,Xiaoyong Qiu,Jingcheng Hao
Double-layer fibers control gaseous microenvironment, suppressing respiration. • Double-layer fibers possesses high selectivity of CO 2 and O 2 . • The dual mechanism—gas regulation and bioactive—prolongs the quality of fruits. Respiration is the primary driver of postharvest deterioration in highly perishable fruits, as both plant tissues and associated microorganisms rapidly consume available nutrients and accelerate quality loss. Modulating the surrounding gaseous environment is therefore critical for mitigating respiration-the most important factor of driving spoilage. In this study, double-layer fiber films with selective gas permeability were developed to regulate O 2 and CO 2 levels within localized microenvironments. Their asymmetric structure established a mildly hypoxic and CO 2 -enriched atmosphere, achieving a gas selectivity of 11.39 ± 0.88 and effectively lowering respiratory intensity. The fibers also provided antibacterial and antioxidative functions, contributing to reduced microbial contamination and oxidative degradation. When applied to litchi, the films extended the effective commercial shelf life to approximately 9 days and significantly delayed overall spoilage throughout a 15-day evaluation period under controlled storage conditions. Beyond their demonstrated efficacy, these fibers show considerable potential for advancing food preservation strategies, offering meaningful opportunities for more sustainable packaging solutions. Their dual-action mechanism—integrating gas regulation with biological active—positions them as a versatile material platform for addressing spoilage challenges in highly perishable fruits. Download: Download high-res image (89KB) Download: Download full-size image
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Foods
·
2026
·Vol. 15
·期 16
·2829
·
IF 6
Jianchao Deng,Tianyu Chen,Jin Huang,Chunsheng Li,Xiao Hu,Xue Zhao,Yanyan Wu,Shengjun Chen,Yongqiang Zhao
The quality of yellowfin tuna is highly vulnerable to microbial proliferation, which accelerates quality deterioration and spoilage throughout storage. In this study, the dynamic changes in biogenic amines (BAs), total volatile basic nitrogen (TVB-N), and total plate count (TPC) across a different storage temperature range of 0 to 25 °C were studied, followed by a shelf-life prediction based on kinetic models. The TPC, TVB-N, and most BAs increased significantly with increasing storage time and temperature. Correlation analysis was used as an exploratory approach and showed that only histamine and cadaverine exhibited significantly positive correlations (|r| ≥ 0.6,p< 0.05) with TPC and TVB-N within the present dataset. Histamine was selected as a candidate BA indicator for kinetic modeling because only this BA changed significantly during storage at different temperatures. Utilizing histamine, TPC, and TVB-N, preliminary kinetic equations for shelf-life estimation were developed using first-order kinetics and the Arrhenius equation. Among the tested indicators, TPC showed relatively greater temperature sensitivity and preliminary within-batch agreement. These results provide preliminary reference data for further validation of tuna during the refrigeration process.
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Biosensors-Basel
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2026
·Vol. 16
·期 8
·424
·
IF 6.2
Ziyi Xiao,Ruyi Deng,Xin Liu,Jiahuan Zheng,Kaisong Yuan
Real-time pH measurement and regulation of microliter-scale liquid samples are critical for microfluidic biochemical applications. However, traditional magnetic stirring for macroscopic systems is not applicable under such microscale conditions. This work develops an ultrasound-assisted screen-printed electrode (SPE) pH sensor integrated with a 3D-printed ultrasonic reflection cell and piezoelectric excitation unit. Ultrasound-induced acoustic streaming accelerates mass transfer inside microliter-scale samples. Upon acid addition, the ultrasonic-assisted system reaches potentiometric equilibrium far more rapidly than the static non-ultrasonic control. Optimized parameters are 30 s ultrasonic duration and 5 Vpp input amplitude. The sensor shows linearity from pH 3.04 to 4.15 with R2= 0.9919. Phenolphthalein visualization directly confirms ultrasound-enhanced molecular diffusion. Its mass transfer efficiency matches traditional magnetic stirring, and stable fast equilibrium is realized in complex cell culture medium. This acoustofluidic micromixing strategy offers a simple integrated route for pH monitoring and the regulation of micro-volume biological samples.
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POLYMER
·
2026
·
IF 5.1
Yongchao He,Hanzhao Kuang,Xiaoqing Liu,Hai Zheng,Yinhang Zhang,Xuan Wang,Yinghua Huang,Jinjing Tang,Feng Wang,Xudong Cui,Mingbo Yang,Hang Chen,Yanhao Huang
Coumarin oxime esters (COXEs) have received extensive attention for their outstanding photoinitiation performance, but their rational and efficient design is challenged by the vast combinatorial space of possible electron donor/acceptor substituents on the coumarin core. In this work, a two-dimensional quantitative structure-activity relationship (2D-QSAR) analysis of reported COXE structures was performed to examine the relationship between structural descriptors and photo-reactivity. It was revealed that the acceptor and donor of hydrogen bond (HA, DH), total energy ( E ), as well as energy gap ( E g ) strongly influence the absorption wavelength ( λ max ). In particular, the phenyl ring with electron-withdrawing substituents enhances the charge asymmetry of the adjacent N–O bond and induces a red shift in the absorption wavelength. As a result, a novel COXE, namely C-5, was rationally designed and synthesized with a pentafluorophenyl substituent. The λ max of C-5 was predicted by DFT and confirmed by the UV-vis spectrum to be 424 nm in acetonitrile. Meanwhile, C-5 exhibits strong absorption ( ε ) of about 8.66 × 10 3 M −1 cm −1 at 405 nm and shows rapid photobleaching under 405 nm irradiation. In addition, the GelNB system photocured by the C-5 photoinitiator enabled a polymerization conversion of about 25.8%, with an elastic modulus of 2878 MPa. This modulus is significantly higher than that of the samples cured by the LAP and Irgacure 2959. These results demonstrate that the 2D-QSAR-DFT collaborative design can identify and optimize novel COXE photoinitiators, thereby advancing the highly efficient, rational preparation of visible-light-active photoinitiators for visible-light photopolymerization.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Yixuan Jiang,Botao Gao,Yan Dong,Wenzheng An,Juntai Lv,Zehao Kang,Yongbin Zhang,Dongzhi Zhang
The accurate, simultaneous, and in situ monitoring of multiple sweat biomarkers holds great promise for both athletic performance optimization and disease management. Sweat biomarker monitoring using a wearable colorimetric sweat sensor provides a wireless, electronic-free, and battery-free strategy with easy integration with smart mobile devices such as smartphones. However, existing wearable colorimetric sweat sensors still suffer significantly from ambient light interference, sweat pH variation-induced detection errors, and the physiological variability of sweat rate. In this study, we introduce a smart wearable microfluidic colorimetric sensing system (SWSS) that overcomes these challenges by integrating a flexible epidermal patch with an AI-assisted cloud analytical pipeline. The disposable microfluidic patch enables passive sweat collection and features multiplexed colorimetric assays for chloride, pH, urea, and lactate, alongside a microfluidic channel for sweat rate tracking. Images acquired using a smartphone are uploaded and processed through a backend cloud system featuring an AI-powered data processing system. This system automatically corrects the errors caused by varying lighting conditions and varying sweat pH, thus improving detection accuracy significantly. In addition, this sensor system measures and calculates sweat rate from the dye front's displacement in the sweat rate channel, enabling a sweat rate normalization framework which enhances physiological interpretability. Experimental results demonstrate excellent agreement between predicted and true concentrations across all analytes (R 2 ≥ 0.994). The system further supports on-body testing and real-time analysis through seamless smartphone integration. These findings highlight SWSS platform as a promising next-generation platform for accurate and individualized sweat biomarker sensing for human physiological status monitoring.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Jiaxin Zhou,Zitao Lin,Peng Yuan,Hongling Bu,Meiqing Chen,Honghai Wu,Yanfu Wei
The development of cost-effective catalysts for green diesel production from fatty acids is crucial to sustainable energy, yet achieving high efficiency under mild, low-H 2 pressure conditions remains challenging. Natural halloysite nanotubes (HNT), owing to their abundance, low cost, and high metal-loading capability, represent an attractive catalyst support. Herein, RuPt alloy nanoparticles supported on halloysite nanotubes are used for the efficient decarboxylation of stearic acid (SA). Under mild conditions using the in situ H 2 , the optimized Ru 0.7 Pt 1.0 /HNT catalyst exhibits high performance, achieving 87.40% SA conversion, with a C8-C19 alkane selectivity of 90.42%. Meanwhile, the catalyst maintains high catalytic activity over at least three consecutive reaction cycles. Combined experimental results and DFT calculations reveal that the RuPt bimetallic catalyst exhibits a significantly lower activation energy barrier than its monometallic counterparts. This reduction is attributed to electron transfer from Pt to Ru, which lowers the activation energy barrier and accounts for the superior performance. This work establishes a scalable low-noble-metal-loading catalyst design, offering an energy-efficient and sustainable route for green diesel production from waste cooking oils.
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ACS Applied Polymer Materials
·
2026
·
IF 5.2
Luo Yanpeng,Cheng Jinyuan,Fang Guigan,Fatehi Pedram,Zhao Mengke,Wang Xiaofa,Shao Xinyi,Zhang Sufeng,Wu Ting
Replacing
petroleum-derived polyols with lignin in polyurethane
foams is essential for increasing renewable carbon utilization but
is hindered by lignin’s heterogeneity, poor solubility, and
limited reactivity. Here, we report a hydrogen-bond-engineered, eutectic-like
polyol platform based on polyethylene glycol (PEG) and salicylic acid
(SA), with ethylene carbonate (EC) as a cosolvent, enabling high lignin
incorporation in the polyurethane foam formulation while maintaining
its processability. Structural and thermal analyses confirm the formation
of a homogeneous amorphous system, in which EC disrupts intermolecular
interactions and enhances chain mobility, reducing the viscosity of
the foam formulation to industrially relevant levels (<5 Pa·s).
This platform enables the direct substitution of up to 80 wt % of
the petroleum-based polyol with kraft lignin, without chemical modification,
in the foam formulation. The resulting foams exhibit uniform closed-cell
morphology with reduced cell size (287 ± 154 μm), enhanced
network integration, improved compressive strength (0.26 MPa) and
hydrophobicity, and increased thermal stability. Notably, the foams
with a high lignin content demonstrate delayed heat penetration under
external heating conditions, which is associated with the formation
of stable closed-cell structures. This one-pot, room-temperature strategy
provides a promising pathway toward the scalable development of high-lignin
polyurethane foams with substantially increased renewable carbon content.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Jilong Lu,Meizhen Xie,Lipin Chen,Qing Song,Siew Yin Chan,Yong-Huan Yun
Iridescent CSM is obtained from shrimp shell by deproteinization, demineralization and deacetylation. • Iridescent CSM is a mesoporous material with Bouligand structure. • CSM exhibited chromatic responsiveness toward aldehydes, ketones and acids. • CSM successfully identified all highly oxidized samples through noticeable color changes. Lipid oxidation is a major cause of food deterioration and can be detected visually using colorimetric sensors. However, existing sensors often involve the use of harmful chemicals or dyes. This study aimed to exploit the potential of structurally colored biomaterials as lipid oxidation sensors. An iridescent chitosan membrane (CSM) with structural color was fabricated from shrimp shells by chemical deproteinization, demineralization and deacetylation. Its responsiveness toward 28 volatile lipid oxidation products was investigated, and its effectiveness as a lipid oxidation sensor was evaluated. The results showed that the CSM exhibited a Bouligand structure. The membrane had a deacetylation degree of 83.97%, a specific surface area of 0.30 m 2 /g, an average pore volume of 0.0006 cm 3 /g, and an average pore diameter of 8.76 nm. It showed visible color changes upon exposure to aldehydes, ketones, and organic acids, with minimum visually discernible concentrations of 14 μmol/L for organic acid, 54 μmol/L for aldehydes and 1085 μmol/L for ketones. Moreover, CSM exhibited excellent structural stability and remained chemo-responsive during one year of storage under room temperature conditions. Eight soybean oil samples derived from the same oil but at different oxidation stages were used for assessing the performance of CSM as a lipid oxidation sensor. Out of the eight oil samples, the CSM correctly identified the oxidation status of seven, showing no color change for fresh samples and visible color changes for oxidized ones. This work demonstrates the potential of the structurally colored CSM as a biocompatible and chemical-free colorimetric indicator for lipid oxidation detection. Download: Download high-res image (225KB) Download: Download full-size image
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Yunlong Zhu,Pirah Ayaz,Xi Liu,Yaoming Ou,Xiangdong Liu
Reloadable β-cyclodextrin and terpineol system enables regenerable bio-protection. • Janus design integrates sweat transport, evaporative cooling and heat spreading. • Scalable textile processing affords biocompatible multifunctional cotton fabric. Global climate change and public health emergencies have raised urgent demand for multifunctional textiles that integrate thermal comfort and hygienic safety. This work reports a Janus cotton fabric combining functions of passive cooling, unidirectional moisture transport, and regenerable antimicrobial protection, aiming to overcome the challenges of multifunctional integration and durability enhancement in textile materials. Specifically, on the fabric's outer surface, β-cyclodextrin (β-CD) is covalently grafted onto cotton fibers to enable controlled release and repeatable loading of bioactive terpineol (TP) via host-guest inclusion, while preserving a hydrophilic surface. On the reverse side, hydroxylated boron nitride (h-BN-OH) nanosheets are immobilized by silane mist treatment to construct a thermally conductive, hydrophobic inner layer. The resulting asymmetric Janus fabric exhibits a unidirectional moisture transport index of 1270%, a maximum instantaneous heat flux of 0.275 J/cm 2 ·s, and approximately 10 °C cooling for simulated skin under outdoor solar irradiation. Moreover, it achieves 99.99% inactivation efficiency against Escherichia coli , Staphylococcus aureus , and Phi6 phage, and its protective performance is recoverable by reloading TP. This approach enables the integration of thermal-moisture management capability and microbicidal bioactivity in one Janus fabric, offering a practical strategy for developing high-performance personal thermal management and hygiene-protective textiles. Download: Download high-res image (118KB) Download: Download full-size image
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FOOD HYDROCOLLOIDS
·
2025
·
IF 12.4
Wenxin Jiang,Chengchi Zheng,Wei Lu,Zhiming Gao,Lei Li,Chunpeng Gou,Yuehan Wu,Dan Yuan,Yanlei Li
As an excellent textural regulator as well as health promoter, Konjac glucomannan (KGM) demonstrates promising potential for the development of functional foods. This study proposes that deacetylation-induced aggregates of KGM, with enhanced amphiphilicity and altered morphological properties, exhibit potential in stabilizing oil-in-water emulsions. Deacetylated KGM aggregates (DKs) were prepared via alkaline-thermal treatment, and the deacetylation degree could be regulated by alkali concentration. Analysis of Zeta-potential, deacetylation degree, and FT-IR spectra collectively confirm that KGM aggregation is driven by the removal of acetyl groups. Physical properties of DKs were characterized by visual appearance, microscopic morphology, rheological behavior, and three-phase contact angle. Results reveal that appropriate deacetylation (27.26 %) induces molecular-scale aggregation of KGM, which enhances amphiphilicity while preserving the viscosity of DKs suspensions. Emulsification assays indicate distinct interfacial stabilizing mechanism between KGM and DKs. Attributed to higher viscosity and better interfacial adsorption, DK-6 (27.26 % deacetylation) suspensions could ensure the long-term stability, thermal stability, and NaCl tolerance of emulsions. By clarifying the emulsifying potential of DKs, this study offers novel perspectives for developing polysaccharides-based food emulsifiers.
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CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Rongquan Liu,Haojun Hou,Yue Lin,Wanqing Yan,Xianzhi Hu,Futing Zi
When treating high-sulfur bauxite by the high-temperature Bayer method, the obtained sodium aluminate solution typically has an iron concentration of more than 5 mg/L, rendering it unusable for the production of high-purity alumina. In this work, the sulfur ions from the sodium aluminate solution may formed strong coordination bonds with Fe(Ⅲ) or Fe(Ⅱ) to generate complex-ion with Fe(II)-S-OH - .Then, the ligand-metal bonds dissociated and reconfigured, and more stable nano-polycrystalline products such as FeSO 4 ·7H 2 O and FeS were formed. Iron in solution reacted with these iron-sulfur compounds via heterogeneous nucleation reactions to crystallize and agglomerate, and a simple filtration reduced the iron concentration in the sodium aluminate solution to below 5 mg/L. Under suitable conditions, the removal of iron from the sodium aluminate solution reached 86 % with an alumina loss of less than 2 %. The method of inducing crystallization and enrichment by the addition of Fe(Ⅲ) or Fe(Ⅱ) can effectively remove iron impurities.
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危险品化学品经营许可证（带存储）