FOOD HYDROCOLLOIDS
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2018
·
IF 5.089
Kai Zhu,Da Yu,Xiaoyuan Chen,Guanglei Song
In this work, a pH-responsive semi-interpenetrating network (semi-IPN) hydrogel consisted of peach gum polysaccharide (PGP) and Auricularia polytricha β -glucans (APP) was developed. Scanning electron microscope and confocal laser scanning microscope showed that PGP-APP hydrogel had a high porous structure with the formation of PGP-APP semi-IPN. Mössbauer and FT-IR spectroscopy revealed that the hydrogels had COO − -Fe 3+ cross-links through bridging and unidentate binding. Moreover, the delivery capability of the hydrogel was studied. The in vitro release of encapsulated Lactobacillus plantarum CICC20264 and Lactobacillus salivarius CICC23174 in simulated gastric fluid was negligible (below 2 log 10 cfu/g), while viable cells were progressively increased with the degradation of hydrogels at stimulated intestinal conditions and a complete release was reached up to more than 7 log 10 cfu/g after 10.25 h incubation. On account of stable and dense structure, PGP-APP semi-IPN hydrogels had a significant positive effect ( p < 0.05) on the viability of bacteria under gastrointestinal transition model. These studies indicated the unique properties of PGP based hydrogels and potential application as intestinal targeted delivery systems.
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高影响因子
NANO
·
2017
·
IF 1.025
Yin Zhong,Qi Chen,Junjian Li,Xihao Pan,Zhiwei Han,Wei Dong
An environment friendly, economic and maneuverable hydrothermal method was proposed for fabrication of nitrogen and chlorine co-doped carbon quantum dots (N,Cl-CQDs). D-Glucosamine hydrochloride as the only precursor offered source of carbon, nitrogen and chlorine. As a consequent N,Cl-CQDs can emit blue luminescence and detect Fe 3 + by fluorescence response with high selectivity and sensitivity. There is a linear semilogarithmic correlation between the quenching efficiency F 0 ∕ F and the concentration of Fe 3 + with a detection limit of 0.167 μ M. The N,Cl-CQDs exhibit a high quantum yield of 16.8% along with the fluorescence lifetime of 2.2 ns. It is worth noting that the prepared N,Cl-CQDs show excellent biocompatibility and they are promising materials for sensing and biology.
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高影响因子
RSC Advances
·
2024
·Vol. 14
·期 35
·25359-25368
·
IF 3.9
Yajun Jiang,Aolin Wu,Lin Yang,Jun Wu,Yue Liang,Zhigang Hu,Ying Wang
This study explored the preparation of a novel composite hydrogel based on deep eutectic solvent (DES) with lysine (Lys) and its application in pressure sensing and Fe3+ adsorption. DES was synthesized from acrylamide (AM) and urea (U) as hydrogen bond donors (HBD) with choline chloride (ChCl) as hydrogen bond acceptor (HBA), and Lys was used as a functional filler, and Lys/P(AM-U-ChCl) composite hydrogels were successfully prepared by frontal polymerization (FP) method. The structure of the hydrogels was characterized in depth using Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The effects of Lys content on the mechanical properties, pH-responsive behavior, pressure-sensitive properties, and Fe3+ adsorption capacity of the hydrogels were further analyzed. It was found that the introduction of Lys significantly improved the compressive and pressure-sensitive properties of the hydrogels. The composite hydrogels exhibited excellent swelling equilibrium rates at different pH values. The capacitance change of the hydrogel with 0.5 wt% Lys at 200 g pressure was 2.12-fold higher than that of the hydrogel without Lys addition, and the adsorption efficiency of the hydrogel for Fe3+ was greatly enhanced. This study provides a new idea for the functionalized design of composite hydrogels and demonstrates their great application prospects in high-performance pressure sensors and heavy metal ion adsorption.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2024
·
IF 4.3
Siying Che,Xiutan Peng,Anbang Shen,Linlin Yin,Yuanbin She,Haiyan Fu
Excessive or insufficient iron(Ⅲ) will pose burdens of human body, and its content is the key to control the function of iron-fortified food. In this regard, a functionalized quinoline ionic probe, benefiting from the electrostatic attraction, was designed for the colorimetric detection of Fe 3+ in food. This probe formed a 2: 1 complex with Fe 3+ , altering the UV–vis spectra and solution color. The UV–vis detection limit was 0.2 μM, and visually, the color shifted from light-yellow to dark-green as Fe 3+ concentrations increased, with a visual detection limit of 3.4 μM, meeting the maximum acceptable level of 5.4 μM. Noteworthy, ionic liquid-based sensing paper was constructed for rapid, semi-quantitative Fe 3+ detection. Furthermore, the satisfying recovery (97.4–102.9 %) was obtained in real samples, showcasing the probe’s efficiency. This work demonstrated the potential of ionic liquids for the fast, sensitive, and visual detection of Fe 3+ , offering a promising direction for metal element sensing platforms.
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高影响因子
Nanoscale Research Letters
·
2016
·Vol. 11
·期 1
·1-9
·
IF 2.584
Sun Chun,Zhang Yu,Wang Peng,Yang Yue,Wang Yu,Xu Jian,Wang Yiding,Yu William W.
Garlic was used as a green source to synthesize carbon dots (CDs) with a systematic study of the optical and structure properties. Ethylenediamine was added into the synthesis to improve the photoluminescence quantum yield (PL QY) of the CDs. Detailed structural and composition studies demonstrated that the content of N and the formation of C–N and C=N were critical to improve the PL QY. The as-synthesized CDs exhibited excellent stability in a wide pH range and high NaCl concentrations, rendering them applicable in complicated and harsh conditions. Quenching the fluorescence of the CDs in the presence of Fe 3+ ion made these CDs a luminescent probe for selective detection of Fe 3+ ion.
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高影响因子
JOURNAL OF LUMINESCENCE
·
2017
·
IF 2.686
Jianfeng Liu,Ying Qian
In this work, a novel pyridylvinyl rhodamine-naphthalimide ratiometric fluorescent probe , In this work, a novel pyridylvinyl rhodamine-naphthalimide ratiometric fluorescent probe, RNVP , was synthesized and characterized by 1 H NMR, 13 C NMR and HRMS techniques. This probe shows high selectivity and sensitivity towards Fe 3+ and Hg 2+ . At a low concentration of Fe 3+ /Hg 2+ , a new emission peak appeared at 581 nm and enhanced significantly along with naked-eye sensitive color changes, which spirolactam-ring moiety of rhodamine was converted to the open-ring form in the presence of Fe 3+ /Hg 2+ . Further addition of Fe 3+ /Hg 2+ , the fluorescence intensity at 438 nm was enhanced rapidly, which attributed to the suppression of the PET process. The proposed sensing system of probe RNVP represented dual-channel and segment detection behavior, with the fluorescence “turn-On or Off” response and a very low detection limit of 2.72×10 −8 M and 9.08×10 −8 M, and the dissociation constant (Kd) were calculated to be 4.95×10 −7 M 3/2 and 6.68×10 −8 M 3/2 , respectively. RNVP also quick responded linearly to the acidic solution and monitor the pH change in the range of 2.92–4.5, as well as excellent reversibility.
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高影响因子
JOURNAL OF LUMINESCENCE
·
2025
·
IF 3.6
Guangliang Lu,Yiping Zhang,Jianlian Song,Yuhan Jing,Xingyu Li,Rao Qin,Da Biao Zhai,Jiangang Jiang,Yiping Wang,He Wang
Traditional methods for latent fingerprint (LFP) detection often suffer from insufficient contrast and background interference, limiting their effectiveness in forensic applications, particularly in complex environments. This study introduces an innovative approach that combines Fe 3+ -doped NaYF 4 :Yb, Er upconversion nanoparticles (UCNPs) with digital image processing technology. By optimizing the Fe 3+ doping concentration (15 % mmol) and synthesis temperature (220 °C), the red emission intensity at 655 nm was enhanced by 13.96 times compared to undoped samples. The amplified red emission originates from energy transfer of | 2 F 7/2 , 4 T 1g ⟩ (Yb 3+ -Fe 3+ dimer) to 4 F 9/2 (Er 3+ ) states, coupled with crystalline field symmetry distortion induced by Fe 3+ codoping. Dynamic studies of 4 S 3/2 and 4 F 9/2 states under 980 nm pulsed laser excitation, alongside diffuse reflectance analysis, corroborate the proposed upconversion mechanism. Additionally, The optimized UCNPs demonstrated high biocompatibility and stability, achieving LFP visualization with contrast ratios up to 85.03 % and structural similarity scores exceeding 91.58 % via MATLAB-based digital image processing, a significant improvement over conventional methods. This work establishes a robust, non-toxic LFP detection system with potential applications in forensic science.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2024
·
IF 4.3
Tianfeng Ma,Yanyan Jia,Lin Shi,Xiaohua Xu,Kun Zheng,Zijia Fu,Huan Wang,Yongchang Lu
Acetaminophen, also known as paracetamol (APAP), is a commonly used over-the-counter medication that is often used to treat headaches, toothaches, joint pain, muscle pain, and to lower body temperature. However, overdose can lead to liver damage, gastrointestinal distress, kidney damage, and cardiovascular disease. Therefore, it is very important to establish a method to quickly detect APAP. A novel “ON-OFF-ON” colorimetric and fluorescence dual-signal sensing system was constructed for the quantitative detection of APAP based on 5,10,15,20-tetrakis(4-sulphonatophenyl) porphyrin (TSPP) dual-signal probe. The absorbance and fluorescence intensity of TSPP respectively were quenched when Fe 3+ was introduced into TSPP solution. At this point, the color of the corresponding solution changed from red to green. The absorbance and fluorescence intensity of TSPP respectively were restored when APAP was added to the TSPP-Fe 3+ system. At this time, the color of the solution changed from green to colorless. Therefore, an “ON-OFF-ON” dual-signal sensing study of APAP were constructed using TSPP as the colorimetric and fluorescent probe. The proposed colorimetric sensing system had a wide linear range in the 13.12 mM ∼ 23.20 mM with 0.11 mM of limit of detection (LOD, S/N = 3). And the proposed fluorescence sensing system had a wide linear range in the 3.45 mM ∼ 12.50 mM and 41.67 mM ∼ 65.22 mM with 0.83 mM of limit of detection (LOD, S/N = 3). The dual-signal sensing system were applied to the APAP detection of real samples.
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JOURNAL OF THE ENERGY INSTITUTE
·
2024
·
IF 5.6
Weijuan Lan,Yunlong Zhou,Jiaxin Liu,Yingxian Wang,Xin Jin,Dongxue Yin,Jiangtao Ji,Gaixiu Yang,Huan Zhang
Biomass carbon materials have attracted attention in various fields due to their excellent properties. In this study, CH 4 derived from biomass pyrolysis was utilized as a carbon source gas to synthesize carbon materials by chemical vapor deposition (CVD) in a two-stage reactor with purification system, with Fe 3+ -loaded nickel foam as the substrate under an argon atmosphere, using a self-designed experimental platform. The reaction process was optimized by examining the effects of the catalyst type, reaction temperature, reaction time, and gas flow rate on the structure and morphology of the carbon materials. The optimal preparation condition was to use FeCl 3 ethanol solution as catalyst, with CH 4 flow rate of 50 ml/min at 1000 °C for 25 min. The high quality carbon materials with uniform diameters (250–500 nm) were obtained on nickel foam substrate. The carbon materials obtained under optimal conditions were characterized and analyzed to investigate their excellent properties. Surface morphology and structure of as-formed carbon materials were characterized by SEM. The analysis of the XRD spectra and the Raman spectroscopy showed that the graphite diffraction peak (002) at 26.6°, the calculated intensity ratios for I D / I G and I 2D / I G were 0.257 and 0.545, respectively, indicated high degree of graphitization and purity of the carbon materials. Furthermore, the growth mechanism of carbon materials on the nickel foam substrate was discussed.
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高影响因子
LUMINESCENCE
·
2024
·Vol. 39
·期 12
·e70058
·
IF 3.2
Zherui Wan,Xiaoxu Cui,Zhonghao Li,Haorui Zhong,Yilei Liu,Yesheng Liang,Zhiyong Zhang,Guang Yang
Herein, a kind of N-doped fluorescent carbon dots (N-CDs) were prepared by using melamine and carboxymethyl cellulose (CMC) as precursors through a straightforward hydrothermal method. The designed sensor displayed a uniform nanoscale distribution, excellent hydrophilicity, and strong fluorescence emission with a fluorescence quantum yield of 37.98%. Moreover, the N-CDs could be utilized for Fe 3+ detection by the fluorescence “On–Off” transition via the mechanism of internal filtration effect (IFE) and static quenching process. Two good linear relationships within the concentrations of Fe 3+ from 10 to 100μM and 100 to 500 μM could be obtained, which indicated that the “On–Off” fluorescent sensor could quantitative analysis of Fe 3+ and the calculated detection limit (LOD) was 0.510 μM (3σ/slope). Additionally, the N-CDs could be used for the detection of Fe 3+ in the solid phase based on the fluorescence “On–Off” strategy, which is promising for anticounterfeiting application.
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DYES AND PIGMENTS
·
2024
·
IF 4.1
Yongjie Wang,Qingzhou Bu,Dongshuo Li,Shuai Yang,Li Li,Guotao Xiang,Sha Jiang,Ying Chang,Chuan Jing,Xianju Zhou,Lev-Ivan Bulyk,Andrzej Suchocki
Near-infrared phosphor-converted light-emitting diodes (NIR pc-LEDs) are compact light sources of great interest for NIR spectroscopy applications. Beyond typical Cr 3+ -activated NIR-emitting phosphors, there exists a strong demand for Cr 3+ -free alternatives with high efficiency and broadband emission to rich the landscape of NIR luminescent materials and extend their range of application fields. Here, we report a series of Fe 3+ -activated Ca 3 Ga 2 Sn 3 O 12 garnet-type phosphors exhibiting broadband NIR emission in the 650–1000 nm range attributed to 4 T 1 (G) → 6 A 1 (S) transition, with a maximum at 754 nm and a FWHM of 89 nm upon UV excitation. The spectroscopic results were analyzed according to the Tanabe-Sugano theory from which the crystal field parameter D q and Racah parameters B and C were obtained for the octahedrally coordinated Fe 3+ ion. Notably, the NIR persistent luminescence lasting over 1 h was detected following UV or X-ray irradiation. The possible mechanism involving electron traps was proposed to explain the observed persistent luminescence. Furthermore, a NIR pc-LED was fabricated by coating synthesized phosphor on a UV chip, and its performance was evaluated to assess its potential suitability as a NIR light source. Our discovery of novel type of nontoxic Fe 3+ -activated broadband NIR luminescence phosphors with efficient NIR persistent luminescence paves the way for discovering Cr 3+ -free multifunctional NIR luminescence materials, thereby expanding their application possibilities.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Junyan Guo,Zhengke Zhang,Gulden Goksen,Mohammad Rizwan Khan,Naushad Ahmad,Wanli Zhang,Hao Deng
This study examines the effects of edible chitosan coatings reinforced with tannic acid (TA) and ferric iron (Fe 3+ ) double crosslinking on the quality of wax apples stored at room temperature. The effects of chitosan (CS) and CS/TA/Fe coatings on wax apple weight loss, decay index, respiration rate, titratable acidity, total phenolics, and other quality parameters were investigated. The weight loss and decay index of wax apples increased over time, with the CS coating delaying both compared to untreated fruits. On the final storage day, the CS/TA/Fe coating reduced weight loss by 34.35 % and maintained SSC at 9.17 ± 0.49. Additionally, the activities of catalase (CAT), ascorbate peroxidase (APX), polygalacturonase (PG), and pectin methyl esterase (PME) were evaluated. Compared to other groups, the CS/TA/Fe coating more effectively preserved the CAT and APX activities while delaying the increase in PG and PME activities. CS/TA/Fe coating preserved wax apple cell wall integrity and reduced respiration and oxidative damage (malondialdehyde levels), likely via a CS/TA/Fe supramolecular network limiting gas exchange, thus extending shelf life and maintaining quality.
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危险品化学品经营许可证（带存储）