Food Packaging and Shelf Life
·
2024
·
IF 8.5
Yile Zhao,Zheng Wu,Chen Chen,Olaniyi Amos Fawole,Aili Jiang,Xiangzheng Yang,Da Wang,Xian Li,Di Wu,Kunsong Chen
Preservation of fresh-cut fruits is crucial due to their susceptibility to oxidative browning, and environmentally friendly food packaging has emerged as a promising solution. In the present study, deacetylated konjac glucomannan/carboxylated cellulose nanofibers (DKGM/CCNF) composite films were prepared through a stepwise reinforcement strategy. L-Cysteine and glutathione, screened as the two best anti-browning substances, were respectively loaded into the DKGM/CCNF composite films. The anti-browning effect and mechanism of the DKGM/CCNF functional films were explored on fresh-cut apples. The results demonstrated that deacetylation improved the mechanical properties, surface hydrophobicity, and thermal stability of the films. The incorporation of CCNF further improved the mechanical properties, surface hydrophobicity, and water vapor barrier properties of the films. The fresh-cut apples packaged in the DKGM/CCNF functional films exhibited satisfactory appearance during the 9 d storage. The browning of fresh-cut apples was inhibited by enhancing the activity of related antioxidant enzymes, maintaining higher total phenolic content, and reducing hydrogen peroxide levels. Overall, the DKGM/CCNF functional films prepared in the present study have the potential application prospects of extending the shelf life of fresh-cut fruits.
研究领域:
食品科学
·
材料科学
·
农业工程
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产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Guijing Li,Zhuyin Liu,Zhenyu Luo,Junjie Yi,Zhijia Liu,Yongli Jiang
Natural apple essence (AE) has been widely used as a flavor enhancer due to its distinct aroma and taste, but its high volatility restricts its broader applications in food products. This study addresses the need for an effective microencapsulation technique to overcome the volatility of AE. The objective was to optimize and characterize the AE microencapsulation using β-cyclodextrin (β-CD), gum arabic (GA), and montmorillonite (MMT) as wall materials. The encapsulation process was optimized by integrating the AHP-CRITIC model with Plackett-Burman and Box-Behnken design methods. SEM, FTIR, and XRD analyses confirmed successful encapsulation and interactions between the AE and the wall materials. The optimized AE microencapsulation was then applied to fresh-cut apples, resulting in significant enhancement in preservation of aroma, taste, and sensory quality. These findings suggest that the developed microencapsulation approach is effective in maintaining storage quality of fresh-cut apples and holds potential for broader applications in the food industry.
研究领域:
食品科学
·
材料科学
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产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2020
·
IF 3.99
Ang Li,Mengqi Zhu,Pengfei Hao,Haihao Wu,Jing Gong,Kun Wang,Weichao Yu,Yaorong Feng
To inhibit wall sticking during gathering of high water cut crude oil, based on the deposition characteristics of the complexes by reaction of phytic acid (PA) with ferric chloride (FC), a simple and environmentally friendly method for carbon steel plate modification was adopted in this study. The effects of reaction time, FC concentration, and deposition times on surface wettability and morphology were investigated. It appeared in the results that the wettability of the surface no longer changed after 1 min of reaction. After two times of deposition, the carbon steel exhibited superhydrophilicity in air and superoleophobicity under water, and more pronounced nano-structures were observed. Comparing with similar works, no electroplating, heating and other devices are required during the entire coating process . Moreover, for the sake of clearly explaining the mechanism of wettability conversion during PA-FC modification, the theory of surface energy and adhesion work were used to quantitatively calculate the adhesion strength of oil droplet on solid surfaces . It was found that the hydrophilization and underwater oleophobicization of materials were essentially a process of increasing the polar component of surface energies, and the opposite adhesion state of oil in air and under water was demonstrated theoretically. Finally, the anti-sticking ability at low temperatures of treated carbon steel was evaluated experimentally. The PA-FC coating showed good oil gel prevention performance below the pour point of crude oil. In conclusion, the wall sticking prevention method proposed in our work provides another way for flow assurance of the transportation of high water cut crude oil.
研究领域:
材料科学
·
石油工程
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2016
·Vol. 52
·期 5
·2442-2451
·
IF 2.302
Cheng Shuang,Wang Jian,Lin Hongzhen,Li Wanfei,Qiu Yongcai,Zheng Zhaozhao,Zhao Xinluo,Zhang Yuegang
Transition metal chalcogenides such as FeS 2 are promising electrode materials for energy storage. However, poor rate performance and low cycling stability hinder the practical application of FeS 2 cathode in secondary batteries. In this study, highly pure pyrite FeS 2 nanocrystals (NCs) with octahedral shape and 200–300 nm size have been synthesized via a facile and environmentally benign approach based on a surfactant-free aqueous reaction. Combined with a compatible ether electrolyte, the prepared FeS 2 NCs, despite their dimension far beyond the quantum confined regime, could achieve high utilization and reversibility as a cathode active material due to the well-defined crystal structure and the uncapped rough surfaces. Furthermore, we find that the last charging voltage step of FeS 2 only contributes a minor capacity but caused severe capacity fading due to the formation of soluble polysulfides. By suppressing this step through setting a proper upper cut-off voltage, the cycle life of the Li/FeS 2 cell is dramatically improved. The Li/FeS 2 cell running over a voltage window of 1.0–2.4 V at 1C delivers an initial capacity of 486.1 mA h g −1 , slightly lower than that running over 1.0–3.0 V (561.1 mA h g −1 ), but outperforms the latter substantially after 500 cycles (367 mA h g −1 vs 315 mA h g −1 ), corresponding to a capacity decay rate as low as 0.048% per cycle. Our results provide a meaningful approach for the development of not only the advanced FeS 2 material for long-life rechargeable batteries, but also other transition metal chalcogenide nanomaterials for a variety of potential applications.
研究领域:
材料科学
·
能源存储
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产品关联
DOI
高影响因子
RSC Advances
·
2019
·Vol. 9
·期 40
·23267-23275
·
IF 3.049
Jianhua Wang,Lishen Zhang,Xiaochun Li,Xiaoliang Zhang,Hua-Zhong Yu
Nowadays quantitative chemical analysis is usually costly, instrument-dependent, and time-consuming, which limits its implementation for remote locations and resource-limited regions. Inspired by the ancient papercutting art (kirigami), we herein introduce a novel cut-and-paste protocol to fabricate 3D microfluidic paper-based analytical devices (μPADs) that are suitable for on-site quantitative assay applications. The preparation of the device is fast, simple, and independent of any lithographic devices or masks. Particularly designed reaction “channels” were pre-cut from a piece of filter paper, then assembled back to the silanized, superhydrophobic paper pads. The different layers of the device were assembled using a chemically-inert adhesive spray. The fabricated device has high efficiency of liquid handling (up to 60 times faster than conventional methods) and it is particularly inexpensive. Beyond the benchtop fabrication advantage, in conjunction with a custom mobile app developed for colorimetric analysis, we were able to quantify representative environmental contaminants (i.e., the amount of Cr(VI) and nitrite ions) in various water samples with the cut-and-paste μPADs (namely kPADs). Their detection limits (0.7 μg mL−1 for Cr(VI) and 0.4 μg mL−1 for nitrite ions, respectively) are comparable with conventional spectrophotometric methods, which confirm the potential of kPADs for on-site environmental/sanitary monitoring and food toxin pre-screening.
研究领域:
分析化学
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环境科学
·
生物医学工程
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产品关联
DOI
PubMed
高影响因子
POSTHARVEST BIOLOGY AND TECHNOLOGY
·
2022
·
IF 6.751
Yanyan Feng,Dailiang Zhang,Yan Sun,Zan Meng,Aman Ullah Malik,Song Zhang,Hui Yan,Qingguo Wang
This research aimed to screen out safe and effective inhibitors of enzymatic browning from food-derived sulfur-containing compounds. Among eighteen candidate compounds, three were found to reduce the browning of fresh potato mashes. One of these compounds, S-furfuryl thioacetate (S-Ft) at only 0.04 and 0.07 mM inhibited the browning of fresh potato sticks, for over 10 d at 4 °C with an efficacy close to sodium bisulfite at 2.40 mM. S-Ft also reduced the browning of eggplant and asparagus lettuce slices. S-Ft retarded the browning occurrence of potato mashes and tyrosine solutions, but it did not cause the brown pigments colorless. Both the decrease in tyrosine contents and the increase in quinone contents were slowed by S-Ft in potato mashes. Compared with control, S-Ft at 0.04 and 0.07 mM reduced polyphenol oxidase (PPO) activity by 91.22 % and 91.77 %, and addition of copper acetate recovered the PPO activities to 55.62 % and 59.45 % of control, respectively. Kinetics results showed S-Ft inhibited PPO activity in a reversible mixed-type manner. The data of circular dichroism analysis and fluorescence emission spectra indicated S-Ft treatment caused the decrease in α-helix content, the increase in β-sheet content and the change in secondary structure of PPO. Molecular docking results illustrated S-Ft could act with Cu 2+ and amino acid residues of PPO. By comparison with other anti-browning inhibitors, S-Ft has the characteristics of low dosage and long shelf-life extension. These results demonstrated that S-Ft could be a novel and promising enzymatic browning inhibitor by chelating Cu 2+ and changing the conformation of enzyme to reduce PPO activity.
研究领域:
食品科学
·
植物生理学
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DOI
高影响因子
Food Chemistry-X
·
2023
·
IF 6.1
Gengan Du,Qi Guo,Liyue Qiang,Shuaidan Chang,Xiaohai Yan,Hong Chen,Yahong Yuan,Tianli Yue
This study aimed to evaluate the application of encapsulated L . plantarum and eugenol as potential biocontrol agents in sliced apples. The combined encapsulated L . plantarum and eugenol treatment was more effective than separate encapsulated L . plantarum and eugenol treatments, with regards to browning inhibition and consumers panel test. The application of encapsulated L . plantarum and eugenol reduced the decline of the physicochemical qualities of the samples, and improved the ability of antioxidant enzymes to scavenge reactive oxygen species. Furthermore, reductions in the growth of L . plantarum of only 1.72 log CFU/g were observed after 15 days of storage at 4 °C for samples treated with encapsulated L . plantarum and eugenol. Results suggest the combined encapsulated L . plantarum and eugenol appears to be a promising method to protect fresh-cut apples from food-borne pathogens while maintaining the visual appearance.
研究领域:
食品科学
·
微生物学
·
采后技术
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产品关联
DOI
PubMed
高影响因子
Materials
·
2023
·Vol. 16
·期 3
·1255
·
IF 3.4
Haijie He,Tao Wu,Xiaole Shu,Kuan Chai,Zhanhong Qiu,Shifang Wang,Jun Yao
Adding organically modified bentonite into impervious wall materials may improve the adsorption of organic pollutants. In this study, cetyltrimethylammonium bromide organically modified bentonite (CTMAB bentonite) was mixed with sodium bentonite and kaolin to obtain two materials, which were then used as cut-off walls for typical pollutants. Soil column consolidation tests, diffusion tests, and breakdown tests were conducted to study migration of organic pollutants in soil columns. The parameter sensitivity of pollutant transport in the cut-off wall was analysed by numerical simulation. The sodium bentonite mixed with 10% CTMAB bentonite and kaolin-CTMAB bentonite showed the greatest impermeability: with a consolidation pressure of 200 kPa, the permeability coefficients were 1.03 × 10−8m/s and 3.49 × 10−9m/s, respectively. The quantity of phenol adsorbed on sodium bentonite-CTMAB bentonite increased with increasing water head height. The kaolin-CTMAB bentonite column showed the best rhodamine B adsorption performance, and the adsorption rate reached 98.9% on day 67. The numerical results showed that the permeability coefficient was positively correlated with the diffusion of pollutants in the soil column. The quantity adsorbed on the soil column was positively correlated with the retardation factor, and the extent of pollutant diffusion was negatively correlated with the retardation factor. This study provides a technical means for the optimal design of organic pollutant cut-off walls.Keywords:organic pollutants;organic bentonite;soil column;numerical simulation;kaolin
研究领域:
环境科学
·
土壤学
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产品关联
DOI
PubMed
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
·
2023
·
IF 6
Yang Wang,Yuling Zhao,Rongrong Wu,Jingwen Gao,Menghan Chen,Yue Cui,Jianxiong Hao,Junhua Han,Karl Matthews
This study investigated the antifungal effect of curcumin-mediated photodynamic inactivation (PDI) with ascorbic acid (Vc) as a synergist on Penicillium italicum and its biofilms, and evaluated the efficacy in inactivating P. italicum on fresh-cut orange. Results showed that the number of P. italicum spores decreased by 4.61 Log CFU/mL when the concentration of curcumin, Vc and illumination time was 75 μmol/L, 250 mg/L and 20 min, respectively. After PDI treatment, the cell structure of P. italicum was destroyed and leakage of cell contents was observed. Mature P. italicum biofilms were formed after 72 h of incubation, and PDI could reduce the spores in biofilms by 3.23 Log CFU/mL. In addition, under the optimal photodynamic conditions, the number of P. italicum spores in fresh-cut orange decreased by 2.48 Log CFU/g, and the sensory quality was well maintained. In conclusion, curcumin-mediated photodynamic technology could better maintain the freshness of fresh-cut orange. Therefore, this study deepened the understanding of the antimicrobial efficacy of curcumin-mediated PDI on food borne pathogens and its impact on food quality.
研究领域:
食品科学
·
微生物学
·
植物病理学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF FOOD PROCESSING AND PRESERVATION
·
2022
·Vol. 46
·期 3
·e16372
·
IF 2.609
Haixia Ye,Jinmin Wen,Shiyun Wang,Ying Zhang,Bingbing Wu,Siwei Liu,Xinru Chen,Yongqian Xiao,Chengtao Wang,Jianjun Hou,Ming Ni,Xian Xia,Yulin Li
Prolonging shelf life of fresh-cut water chestnuts (FCWC) by vitamin E (vit E) was investigated. Browning degree, decay degree, and edible quality (EQ) of FCWC were evaluated as evaluation indexes of shelf life. Meanwhile, total soluble solids concentration, titratable acid (TA) concentration, ascorbic acid (AA) concentration, hardness, ethylene concentration, polyphenol oxidase (PPO) activity, peroxidase (POD) activity, total phenols (TP) concentration, counts of thermophilic bacteria, yeasts, and molds colonies were analyzed. Shelf life of FCWC could be prolonged for 4 days by soaking them in 0.04% (v v −1 ) vit E anhydrous ethanol (1% [v v −1 ]) solution for 30 min. Vit E probably inhibited the increasing of PPO and POD activities, and the declining of TP concentration and hardness. Vit E had little effect on counts of thermophilic bacteria, yeasts, and molds colonies of FCWC. These results indicated that vit E could prolong shelf life of FCWC. Novelty impact statement Vitamin E (vit E) extents shelf life of fresh-cut water chestnuts for 4 days. Vit E inhibits browning by reacting with oxygen or by reducing polyphenol oxidase and peroxidase activities. Vit E has no effect on total soluble solids, titratable acid, ascorbic acid, and ethylene concentration.
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DOI
高影响因子
JOURNAL OF FOOD BIOCHEMISTRY
·
2025
·Vol. 2025
·期 1
·1499526
·
IF 4.2
Mengsheng Deng,Tuankui Ou,Wanying Gan,Huina Li,Wenao Sun,Linghong Xie,Yu Lei
Enzymatic browning affects potato quality and commodity value during processing and storage. γ-Aminobutyric acid (GABA) was proved to enhance the tolerance to biological and abiotic stresses in plants. However, the mechanism by which GABA regulates enzymatic browning in potato remains largely unclear. Therewith, an integrated approach of transcriptomics and physiological analyses was utilized to investigate the mechanism of GABA-regulated browning. The findings showed that GABA significantly retarded the browning of fresh-cut potatoes. Transcriptome analysis indicated that the alteration of endogenous GABA content significantly changed the level of 3625 genes, observably enriched in phenylpropanoid biosynthesis, amino acid metabolism, and hormone signaling. Further studies showed that GABA increased the content of total phenols through changing the activities of phenylalanine ammonia-lyase (PAL), polyphenol oxidase (PPO) and peroxidase (POD), and the expression of genes related to phenol metabolism. Meanwhile, GABA application activated superoxide dismutase (SOD) and catalase (CAT), decreased the content of H 2 O 2 and O 2 − , and enhanced membrane integrity. Moreover, GABA increased the content of 11 amino acids including aspartic acid, threonine, glutamic acid, phenylalanine, isoleucine, cysteine, glycine, tyrosine, proline, serine, and arginine. Additionally, GABA negatively regulated the synthesis and signaling of ethylene, brassinosteroids, and gibberellin, while positively regulated the synthesis and signaling of auxin and abscisic acid at the level of transcription. Therefore, GABA can inhibit potato browning mainly through promoting the accumulation of total phenols and free amino acids and regulating reactive oxygen metabolism and hormone signaling, which provides a more comprehensive insight into the inhibitory mechanism of GABA on browning in fresh-cut potatoes.
研究领域:
植物学
·
食品科学
·
分子生物学
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产品关联
DOI
高影响因子
Small
·
2025
·
IF 12.1
Ziyan Cheng,Yuefeng Yan,En Zhou,Boshi Gao,Guangyu Qin,Kaili Zhang,Tao Chen,Guansheng Ma,Xiaoxiao Huang
Graphene possesses high carrier mobility and structural tunability, but achieving effective electromagnetic wave (EMW) absorption with single-component graphene remains challenging due to the inherent trade-offs among filler loading, impedance matching, and attenuation intensity. Structural engineering of graphene has been proved to be an effective strategy to address this challenge. In this study, a series of short-cut graphene porous fibers (SCGPF) is fabricated through wet-spinning and freeze-drying, and regulating the pore size of SCGPFs to achieve precision control of electromagnetic parameters. The porous structure facilitates the formation of continuous 3D conductive networks among graphene sheets, effectively extending EMW transmission paths and improving impedance matching. Optimized pores enhance the polarization response at the pore edges, SCGPF-30 achieves a minimum reflection loss (RL min ) of −62.31 dB at 2 wt%. The formation of a large-scale 3D network further amplifies conduction loss at a low filler loading, SCGPF-30-3 reaches a maximum effective absorption bandwidth (EAB max ) of 7.61 GHz (10.39–18 GHz) at only 1 wt%. These results demonstrate that synergistic optimization of pore size and conductive network in graphene significantly enhances EMW absorption under an ultralow filler loading, offering a promising strategy for developing high-performance graphene-based electromagnetic protection materials.
研究领域:
材料科学
·
纳米技术
·
电磁学
·
化学工程
·
复合材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）