Food Chemistry-X
·
2024
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IF 6.5
Qian Han,Min Yang,Zexin Zhang,Xinwen Bai,Xiuying Liu,Zhenhua Qin,Wei Zhang,Pingping Wang,Lijie Zhu,Zaixi Shu,Xuepeng Li
In this study, amine vapor-sensitive films with ratiometric fluorescence attributes were developed. The pH-sensitive fluorescein 8-hydroxypyrene-1,3,6-trisulfonic acid trisodium salt (HPTS) and its tetraphenylethylene derivative (TPB) were selected as ratiometric indicators and incorporated into a polyvinyl alcohol (PVA) matrix to produce HPTS/TPB-PVA films. The films responded well to amine vapors, and the interference of aromatic vapors did not substantially affect the fluorescence signals of the films. Under UV light at a wavelength of 365 nm, the fluorescence of the films changed from dark pink to light pink and finally to yellow when the freshness of the fish was visually checked during storage. In addition, the color difference values of the films showed a positive correlation with the total volatile basic nitrogen (TVB-N), ranging from 12.7 to 24.8 mg/100 g at 25 °C and 8.4 to 25.6 mg/100 g at 4 °C, respectively. This indicates that fluorescent films have good potential for quantifying fish freshness in the near future when connected to an automatic data processing system based on color differences.
研究领域:
食品科学
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生物传感
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Ke Zhang,Zhihua Li,Suliman Khan,Mohammad Rezaul Islam Shishir,Huanhuan Zheng,Liying Gao,Jiyong Shi,Xiaowei Huang,Xiaobo Zou
This study aimed to develop a natural colorimetric aerogel based on carboxymethyl cellulose (CMC), sodium alginate (SA), black goji anthocyanin (BGA), and various natural fibers such as cotton fiber (CF), silk fiber (SF), and down fiber (DF) via a freeze-drying approach for monitoring fish freshness. Various colorimetric aerogels, including CMC/SA, CMC/SA/CF, CMC/SA/SF, and CMC/SA/DF were developed and structurally characterized using SEM, FTIR, XRD, TGA, TPA, and BET. CMC/SA aerogel showed higher density (0.054 g/cm 3 ) with no surface pores, while CMC/SA/SF had a large surface area (18.6214 m 2 /g) with uniformly higher porosity (97.113 %) and a lower density (0.024 g/cm 3 ). Moreover, the CMC/SA/SF aerogel exhibited higher mechanical properties and color sensitivity at various pH compared to other aerogels, which was then used as an indicator label for monitoring fish freshness during storage at 4 °C and 25 °C. The label aerogel became blue from purple, when TVB-N and pH values reached 20.03 mg/100 g and 19.50 mg/100 g and pH 6.67 and 6.67 at 4 and 25 °C, respectively, exhibiting fish deterioration. Taken together, the colorimetric aerogel composite CMC/SA/SF shows great potential for application as an intelligent package in monitoring the freshness of fish.
研究领域:
食品科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
TALANTA
·
2015
·
IF 3.545
Wen Sun,Hui Li,Han Wang,Shan Xiao,Jihui Wang,Liang Feng
The sensitivity of pH indicators is always confined in acidic solvents used during the immobilization because of the large deviation from their color transition points. By regulating the pH of indicators using organic acid or base, the color transition points of indicators could be readily achieved and the sensitivity could be greatly enhanced. In this study, bromophenol blue was selected as an example to interpret this improvement. And Hue, Saturation and Value (HSV) color model was applied to obtain digital color information of pH indicators. In addition, other two kinds of pH indicators were chosen and regulated to their color transition points as well. The resultant indicators together with the original ones were composed to a colorimetric sensor array and utilized to determine fish freshness. Compared with the original indicators, much higher sensitivity in the detection of fish freshness was obtained by the pH regulated indicators.
研究领域:
食品科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Siyao Han,Dekun Meng,Yujia Liu,Lina Xu,Yunze Ma,Huajiang Zhang,Hanyu Li,Wentao Zhang,Ahmed M. Rayan,Mohamed Ghamry
The smart labels prepared via the casting method and molten 3D printing method have a long heating time at high temperature and a dense network structure, resulting in a decrease in the color response ability of the labels. Therefore, this study uses a nonphase change foam 3D printing method with a shorter heating time to improve the color sensitivity of smart labels. By the pH driving method, the blending and pregelation of sodium alginate (Alg) can extend the drainage time of the interfacial film to the maximum extent, thus further improving the foam stability of egg white protein (EWP) and endowing the interfacial adsorption layer with better flexibility and fluidity. The pregelled Alg-EWP foam has good 3D printing adaptability, shows obvious shear thinning behavior, and has excellent shear recovery and creep recovery properties. The 3D-printed smart label has significantly higher swelling rate (275 % → 400 %), porosity (19.86 % → 42.86 %) and phenolic retention rate (55.51 % → 97.26 %). In addition, the sensitivity of the smart labels prepared via foam 3D printing significantly increased, indicating mackerel freshness. Therefore, the method of nonphase-change foam 3D printing provides a new strategy for preparing smart labels with increased porosity and color sensitivity.
研究领域:
食品科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Food Bioscience
·
2024
·
IF 4.8
Shiyao Wang,Shanshan Liu,Xinxin Yang,Shihao Zhang,Xing Li,Lixin Zhang,Yisheng Chen
A novel colorimetric paper-sensor (CPS) in this research was fabricated by functionalizing filter paper with mulberry anthocyanin to monitor the freshness of packaged carp and milk. A 2D printer was applied to distribute uniformly mulberry anthocyanin onto the filter paper to form 10 × 10 mm 2 squares, whose colors had a response to ambient pH values. The obtained CPS demonstrated satisfactory stability and reliable color-rendering capacity at pH 2–12. The correlation between color variation and sample freshness was quantitatively evaluated. The application of CPS in detecting the freshness of carp and milk at 25 °C was further studied, whose results evidenced that CPS had a significant color variation when ΔE was greater than 5. Additionally, its color turned from red-violet to gray when TVB-N of carp was greater than 20 mg/mL, implying that there was a strong positive correlation between TVB-N and color variation (R = 0.515). Finally, quantitative analysis about color was conducted by the color recognition software of smartphone. The results indicated when S value (the newly defined color calculation method) was less than 50 or R value was greater than 120, milk and fish were rotten. Consequently, 2D printer could be a promising tool to fabricate intelligent packaging materials enabling monitor visually freshness.
研究领域:
食品科学
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包装技术
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生物化学
✓ 已验证
DOI
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Xiuying Liu,Yu Wang,Zexin Zhang,Lijie Zhu,Xue Gao,Keli Zhong,Xiaofei Sun,Xuepeng Li,Jianrong Li
Freshness is an important parameter of fish quality. This study aims to develop a ratiometric fluorescent sensing label that is responsive to volatile amines, affording real-time and visual detection of fish freshness. For developing of the sensing label, an aggregation-induced emissive (AIE) polymer was prepared from the stimuli-responsive polymer polymethacrylic acid and the AIE molecule tetraphenylethylene and coated on to filter paper with rhodamine B as an internal reference. By exploiting the ratiometric response, the freshness of fish could be identified clearly and easily according to the color of on-package label, which changes from pink (fresh) to dark blue. The difference was linearly correlated with the total volatile basic nitrogen (TVB-N, R 2 = 0.995 and 0.994 at 25 °C and 4 °C, respectively) in the range of 15–25 mg/100 g for the salmon samples, which indicated that the sensing label feasibly and non-destructively quantified TVB-N.
研究领域:
食品科学
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生物化学
✓ 已验证
DOI
高影响因子
Journal of Future Foods
·
2023
·
IF 0
Yanan Liu,Huan Li,Jian Chen,Jiesi Feng,Renjie Lian,Linglin Fu,Yanbo Wang
ABSTRACT Indicating hydrogels have shown the advantages of being fast, sensitive, and real-time in demonstrating the freshness of aquatic products due to their noticeable color change. In this work, an anti-freezing hydrogel embedded with pH-sensitive alizarin was developed as an original colorimetric indicator for monitoring the corruption of aquatic products at low temperatures. The anti-freezing hydrogel was prepared from 2-carboxyethyl acrylate, [2-(methacryloyloxy)ethyl]-trimethylammonium chloride, and 2-hydroxyethyl methacrylate monomers with triethylene glycol dimethacrylate as cross-linking agent. The hydrogel showed excellent anti-freezing capability, which was further incorporated with the pH-sensitive dye alizarin to gain the indicating capability. When applied in the indication of the freshness of salmon under low-temperature storage, it was found that the color changes of the indicator corresponded with the total volatile basic nitrogen contents of salmon, the correlation coefficient of which was 0.959 6. These results indicated the application potential of the hydrogels as freshness indicators during low-temperature storage or cold-chain transportation.
研究领域:
材料科学
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食品科学
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化学工程
✓ 已验证
DOI
Food Packaging and Shelf Life
·
2024
·
IF 8.5
Yahong Han,Mingrui Zhou,Jiajie Deng,Cheng Cheng,Zihan Xu,Wenfu Hou,Yang Yi,David Julian McClements,Shuai Chen
Recently, intelligent packaging integrated with natural colorants has garnered interest for its capability to assess the freshness of stored food and delay its spoilage. However, the poor dispersibility and stability of natural pigments limit their application. This study addresses these issues by encapsulating natural pigments in core-shell protein-polysaccharide nanoparticles to enhance their stability and dispersibility. Using curcumin and anthocyanin as examples, pigment-loaded nanoparticles were synthesized using antisolvent precipitation to create zein particles, which were then coated with chondroitin sulfate through electrostatic layer-by-layer deposition. This method produced spherical anionic nanoparticles with high encapsulation efficiency (Curcumin: 91.93 %, Anthocyanin: 85.85 %). These nanoparticles were incorporated into carrageenan-based composite films, which acted as freshness indicators and preservatives. The films' color shifted from green-brown ( L =33.47, a =9.46, b =11.09) to red-brown ( L =22.80, a =13.83, b =2.11) with increasing nanoparticle concentration (from 20 % to 40 % w/v), and their uniform microstructure demonstrated good compatibility with the biopolymer matrix. The films were tested as freshness indicators and preservatives for packaged fish, showing improved freshness detection and preservation effectiveness with higher nanoparticle content. These biodegradable materials are expected to be intelligent packaging solutions for the food sector.
研究领域:
食品科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Qihua Sun,Yan Xu,Weijing Wang,Jun Sun,Jialin Li,Jin Li,Zhaofeng Wu,Haiming Duan
The detection of trimethylamine (TMA) is important not only for assessing the quality of seafood products but also for monitoring the environment. Biomass-derived carbon materials have been used for gas-sensitive detection because of their environmental friendliness, abundance, diversity, and chemical stability. In this work, the green waste of groundsel fibers (GFs) was used as a substrate, and ultrathin SnO 2 nanosheets were successfully grown in situ on GFs via a simple hydrothermal reaction (SnO 2 /CGFs). The structures and morphologies of the materials were characterized to detect TMA gas at room temperature. Compared with pure CGFs, SnO 2 /CGFs showed satisfactory selectivity for TMA (500 ppm), higher sensitivity, and a response/recovery time of 5.5/3.3 s. The SnO 2 /CGF sensor exhibits good long-term stability and repeatability for the detection of TMA gas. It exhibits good linearity in measuring TMA gas in the concentration range of 5–200 ppm with a theoretical detection limit of 0.475 ppm and monitored the spoilage process of sea bass at room temperature. The improved gas-sensitive performance of SnO 2 /CGFs is attributed to the unique microstructure, heterojunction formation, and abundance of oxygen species of SnO 2 on carbon tubes of biomass grown in situ.
研究领域:
材料科学
·
环境科学
·
食品科学
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2020
·
IF 3.594
Yifu Zhu,Peng Liu,Ting Xue,Jingkun Xu,Daoyang Qiu,Yingying Sheng,Weiqiang Li,Xinyu Lu,Yu Ge,Yangping Wen
In this report, we have prepared 3D porous graphene flexible nanozyme electrode on polyimide by direct laser-writing technology using a home-made computer-controlled laser scribing machine, which is a cost-efficient and one-step mass-production method. This flexible electrode exhibited outstanding mechanical flexibility, distinctive 3D porous structure, expected cycle stability, high conductivity, which was employed as a novel electrochemical nano-sensing platform for intelligent evaluation of fish freshness via simultaneous detection of both xanthine (XT) and hypoxanthine (HX) and smart analysis and digital output using machine learning (ML) model based on artificial neural network (ANN) algorithm. The as-prepared flexible electrode showed an enzyme-like kinetic (nanozyme) characteristic during the detection of XT (0.3–179.9 μM) and HX (0.3–159.9 μM) with a limit of detection (LOD) of 0.26 μM and 0.18 μM, respectively. The fish freshness was evaluated by voltammetric detection of both XT and HX in fish sample with different storage times, and ML model with ANN algorithm was built to realize smart analysis and digital output for evaluating the fish freshness. This will provide an experimental support for biomimetic flexible nano-sensing platform based on nanozyme flexible electrode via facile and rapid one-step mass production and intelligent nano-sensing platform based on ML model for intelligent operation for smart analysis and intelligent transformation for digital output.
研究领域:
材料科学
·
生物传感
·
人工智能
✓ 已验证
DOI
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Jiahao Ren,Yiting Fan,Ruoxin Chen,Yifang Cao,Xinglong Xiao,Fengsong Liu
Freshness deterioration of salmon during cold storage poses significant safety concerns, highlighting the need for real-time monitoring strategies. Herein, a novel starch-pectin film incorporating Nisin-A and curcumin nano-emulsion (SP-NC film) was developed for real-time monitoring of salmon freshness. FTIR, XRD, and molecular dynamics simulations confirmed strong molecular compatibility and stable hydrogen bonding among film components. The SP-NC film exhibited high mechanical strength, with a tensile strength of 4.51 MPa and elongation at break of 43.58 %, as well as outstanding barrier properties reflected by low water vapor permeability (6.82 × 10 −10 g·mm −1 ·s −1 ·Pa −1 ) and oxygen permeability (6.10 × 10 −9 g·mm·mm −2 ·s −1 ). Under blue light, the SP-NC film reduced S. aureus and Salmonella survival rates to 1.85 % and 3.79 %, respectively. When applied to 4 °C refrigerated salmon, the SP-NC film extended shelf life from 4 to 8 days and provided visual spoilage indication. Overall, this study offers a valuable reference for the design of intelligent food packaging.
研究领域:
食品科学
·
包装工程
·
微生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Chao Zhang,Kaidi Wu,Hanlin Liao,Marc Debliquy
Pristine Bi 2 WO 6 nanosheets and hierarchical WO 3 -Bi 2 WO 6 microflowers were prepared via a facile hydrothermal technique. WO 3 -Bi 2 WO 6 microflowers were assembled with thin nanosheets, where WO 3 nanoparticles were uniformly loaded. The H 2 S sensing properties of pristine Bi 2 WO 6 nanosheets and hierarchical WO 3 -Bi 2 WO 6 microflowers were systematically investigated at room temperature. 20 WO 3 -Bi 2 WO 6 microflowers sensor displayed the best sensing property towards ppb-level H 2 S compared with all other samples. The enhancement was ascribed to the catalytic effect of WO 3 nanoparticles and the modified microstructure with large specific surface areas. Moreover, the n–n heterojunction structures also increase the thickness of electron depletion layer and potential barrier height, which could efficiently improve the sensing properties. The practical application of 20 WO 3 -Bi 2 WO 6 microflowers sensor in detecting the volatiles of Pangasius was also studied in this work. Therefore, the hierarchical WO 3 -Bi 2 WO 6 microflower is a promising ppb-level H 2 S sensing material for environment monitoring and fish freshness detection.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）