FOOD CONTROL
·
2025
·
IF 6.3
Huan Huang,Guocheng Zhou,Zhiyuan Meng,Ting Li,Linfeng Sun,Zhonglong Wang,Yiqin Yang
Biogenic amines (BAs), such as cadaverine (Cad), putrescine (Put), and spermine (Spe), serve as critical indicators of meat freshness. In this study, we developed a novel flavonol-derived fluorescent probe, 4-(3-((4-cyanobenzoyl)oxy)-4-oxo-2-(2,4,6-trimethoxyphenyl)-4H-chromen-7-yl)benzoic acid ( CTBA ). CTBA exhibited a sensitive and selective fluorescence response to BAs, with a pronounced emission peak at 510 nm that intensified proportionally with BA concentration. For Cad, the probe demonstrated a linear detection range of 0–45 μM, achieving a low limit of detection (LOD) of 0.36 μM. The interaction mechanism between CTBA and cadaverine was validated through 1 H NMR and high-resolution mass spectrometry (HRMS). Furthermore, a composite fluorescent film was fabricated by spin-coating CTBA with ethyl cellulose (EC), leveraging hydrogen-bonding interactions. This film was successfully applied for real-time monitoring of freshness in fish, and prawn. Our work introduces a pioneering bifunctional material capable of dual-purpose packaging and freshness detection, offering significant potential for enhancing food safety protocols.
研究领域:
食品安全
·
分析化学
·
传感器
·
材料科学
·
生物化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2020
·
IF 7.489
Yanchao Xu,Dongxue Guo,Tong Li,Yirong Xiao,Liguo Shen,Renjie Li,Yang Jiao,Hongjun Lin
Nanofiltration (NF) membranes with tannic acid (TA) based selective layers have been intensively studied in recent years, but they still suffer from poor inorganic salt rejection. This study provided a first report on mussel-inspired co-deposition of TA and amine to obtain high-performance NF membranes. The inorganic salt separation performance of the as-prepared NF membrane was significantly improved by optimising the amine molecular weight. The membranes prepared by TA and various amines were characterised by X-ray photoelectron spectroscopy (XPS), attenuated total reflectance Fourier transform infrared (ATR-FTIR), scanning electron microscopy (SEM), zeta potential, and water contact angle measurement. It was found that amines with low molecular weight, such as ethylenediamine (EDA) and diethylenetriamine (DETA) facilitated the co-deposition onto the membrane surface, while polyethylene polyamine (PEPA) and branched polyethylenimine 600 (PEI600) enhanced the precipitation in solution. The TA/DETA co-deposited membrane showed an MgCl 2 rejection of 83.5% and a pure water permeance of 4.5 L m −2 h −1 bar −1 . The rejection was higher than the reported TA based NF membranes in the literature. In addition to demonstrating a TA based NF membrane with the improved inorganic salt rejection, this study provided new insights into the mussel-inspired co-deposition for material surface engineering towards various applications.
研究领域:
材料科学
·
环境工程
·
化学工程
·
膜技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ChemistrySelect
·
2024
·Vol. 9
·期 37
·e202403006
·
IF 1.9
Qi Yao,Ziyue Chen,Jiaxin Zhang,Yongqin Qiu,Yangting Li,Bo Yang,Hualin Chen
Graphical Phosphorous acid functionalization polyamidoamine dendrimer (PDD) has excellent scale inhibition performance, and when its concentration is 20 mg/L, the scale inhibition rate of calcium carbonate reaches more than 90%. PDD can chelate with Ca 2+ , increase the supersaturation values of CaCO 3 of solution, and thus prolonging the nucleation induction period of calcium carbonate. Moreover, XDR and XPS results indicate that PDD can bind to calcium carbonate crystals, slow down the crystal growth rate, and cause crystal lattice distortion. In addition, PDD has a corrosion inhibition rate of 82.67% at a PDD concentration of 100 mg/L. Phosphorous-based polymeric scale and corrosion are widely used for industrial water treatment. In this paper, phosphorous acid modified polyamidoamine dendrimer (PDD) was prepared for scale inhibition and corrosion inhibition and compared with the existing inhibitors, 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTCA) and polyacrylic. The scale inhibition efficiency of CaCO 3 was evaluated using the static scale inhibition and conductivity method. Compared to polyacrylic acid, the dendritic structure can effectively improve the calcium carbonate scale inhibition performance of the scale inhibitor. When the concentration of PDD is 40 mg/L, the scale inhibition rate is 96%, which is higher than the scale inhibition rate of 91% for PBTCA. The conductivity experimental results reveal that PDD endows the solution with higher supersaturation degree than that of PBTCA at the same concentration. Furthermore, the nucleation induction period of PDD is 1300 s, which is more than twice that of PBTCA at a concentration below 20 mg/L. The XPS, XRD, and SEM results exhibited that PDD can adsorb on the surface of calcium carbonate crystals, changing the crystals from stable calcite to metastable aragonite and vaterite. In addition, electrochemical measurements show a corrosion inhibition rate of 82.67% at a PDD concentration of 100 mg/L. This article provides data support for the application of phosphorous acid functionalization PAMAM in scale and corrosion inhibition.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Greenhouse Gases-Science and Technology
·
2017
·Vol. 7
·期 6
·1116-1125
·
IF 1.676
Chao Chen,Samiran Bhattacharjee
Polyethylenimine (PEI) with different molecular weight such as 275, 800, 1800, and 25000, together with tetraethylenpentamine (TEPA) were impregnated into a mesoporous silica support (silica gel) using a wet impregnation method. These resultant solid amine sorbents with different amine types were compared in terms of CO 2 sorption kinetics and capacity at different temperatures, sorbent regeneration, and cyclic sorption-desorption performance, to study the effect of introduced amine types on the CO 2 capture performance. In the studied temperature range of 35–95°C for CO 2 sorption, samples with different amine types perform differently in CO 2 sorption kinetics and capacity. The largest CO 2 capture capacity for different solid amine samples appears at different temperatures, and there is evident difference on CO 2 capture capacity of different samples. In particular, PEI(25000)/silica gel showed the lowest CO 2 capture capacity among all samples. Compared to PEI/silica gel samples, TEPA/silica gel showed a relatively higher CO 2 sorption capacity. The regeneration of TEPA/silica gel is more difficult than PEI/silica gel samples, and 100°C was found suitable for complete regeneration of all sorbents. PEI(25000)/silica gel showed good reversibility and stability during 10 cyclic CO 2 sorption-desorption (sorption at 75°C and desorption at 100°C) tests, whereas PEI(275), PEI(800), PEI(1800), and TEPA/silica gel all suffered to various extents from amine leaching problems in cyclic CO 2 sorption-desorption performance under identical conditions. The cyclic CO 2 sorption-desorption performance can be improved by decreasing the desorption temperature to 75°C that leads to slightly loss of CO 2 uptake in the second run. © 2017 Society of Chemical Industry and John Wiley & Sons, Ltd.
研究领域:
化学工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2020
·
IF 6.306
Hailong Sun,Shuangping Liu,Jieqi Mao,Ziwei Yu,Zhijie Lin,Jian Mao
Although huangjiu is a popular alcoholic beverage in China, the occurrence of quick-intoxication suppresses huangjiu consumption and impedes development of the huangjiu industry. In this study, the Cryprinus carpio intoxication model was used to compare the differences in intoxication effect of alcoholic beverages and to assess the impacts of huangjiu components on intoxication for the first time. Exposure to huangjiu led to the most rapid physical imbalance of C. carpio , followed by red wine and Western liquor. Higher alcohols, biogenic amines and aldehydes could cause physical imbalance of fish by themselves, and synergistic effects were observed when combined with ethanol. 2-Phenylethanoland and isopentanol had the greatest positive effect on huangjiu intoxication, followed by histamine and phenethylamine. No synergistic effect was observed between individual aldehydes and ethanol. Identification of these impactful huangjiu components provides a new perspective on the establishment of more rigorous control on the quality and flavor of huangjiu.
研究领域:
食品科学
·
饮料化学
·
水生毒理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BIOTECHNOLOGY LETTERS
·
2021
·Vol. 43
·期 8
·1617-1624
·
IF 2.461
Wang Liuzhu,Jiang Shuiqin,Sun Yangyang,Yang Zeyu,Chen Zhi,Wang Hualei,Wei Dongzhi
Objectives Catalytic promiscuity, or the ability to catalyze a secondary reaction, provides new opportunities for industrial biocatalysis by expanding the range of biocatalytic reactions. Some nitrilases converting nitriles to amides, referred to as the secondary activity, show great potential for amides production. And our goal was exploiting the amide-forming potential of nitrilases. Results In this study, we characterized and altered the secondary activity of nitrilase from Acidovorax facilis 72 W (Nit72W) towards different substrates. We increased the secondary activity of Nit72W towards 2-cyanopyridine by 196-fold and created activity toward benzonitrile and p-nitrophenylacetonitrile by modifying the active pocket. Surprisingly, the best mutant, W188M, completely converted 250 mM 2-cyanopyridine to more than 98% 2-picolinamide in 12 h with a specific activity of 90 U/mg and showed potential for industrial applications. Conclusions Nit72W was modified to increase its secondary activity for the amides production, especially 2-picolinamide.
研究领域:
生物化学
·
工业生物技术
✓ 已验证
DOI
PubMed
高影响因子
MOLECULES
·
2018
·Vol. 23
·期 9
·2234
·
IF 3.098
Qingqiang Tian,Zongjie Gan,Xuetong Wang,Dan Li,Wen Luo,Huajun Wang,Zeshu Dai,Jianyong Yuan
A highly efficient and convenient protocol of imidazolium chloride (30 mol %) catalyzed amidation of amines with moderate to excellent yields was reported. The protocol shows broad substrate scope for aromatic, aliphatic, and heterocyclic primary amines.Keywords:imidazolium chloride;catalyst;primary amines;transamidation
研究领域:
有机化学
·
催化反应
✓ 已验证
DOI
PubMed
高影响因子
Environmental Chemistry
·
2012
·Vol. 9
·期 6
·558-563
·
IF 2.57
Lei Wu,Xuefeng Hu,Lei Wu,Xuefeng Hu
Environmental context Aromatic amines are widely used chemicals, which show enhanced toxicity and longer environmental persistence when halogenated. We investigated the chlorination of aniline in seawater and in natural aqueous solutions containing Fe3+ and Cl–, under simulated sunlight irradiation. The results increase our understanding of the transformation pathway of typical nitrogen-containing aromatic contaminants in the environment. Photochlorination of aniline was observed in aqueous solutions containing dissolved FeIII and chloride ions under simulated solar light irradiation. Effects of O2, Cl–, Fe3+ and pH on the formation of chloroanilines (CAs) were investigated. para-chloroaniline (4CA) was identified as the main chlorinated product. The formation of 4CA is enhanced with increased concentrations of Cl– or Fe3+, and decreased pH, whereas oxygen plays a negligible role in the process. The results indicate that, Cl• is formed mainly by the photodissociation of FeCl2+–FeCl2+ complexes, and reacts with Cl– to produce Cl2•–. Aniline is then oxidised by Cl2•– into an anilino radical cation, which further reacts with Cl2•– to generate CAs. The photochlorination of aniline in natural seawater was also observed. Other phototransformation products of aniline were detected and a transformation pathway was proposed. This work provides evidence for the photochemical chlorination path of aniline-based aromatic amines in aqueous solutions.
研究领域:
环境科学
·
化学
✓ 已验证
DOI
高影响因子
ChemCatChem
·
2019
·Vol. 11
·期 22
·5562-5569
·
IF 4.495
Kuo Zhou,Bixian Chen,Xiaoting Zhou,Shimin Kang,Yongjun Xu,Jinjia Wei
Graphical Rane drops keep fallin’ : Cobalt proved to be the most efficient metal for furfurylamine synthesis by reductive amination of furfural with NH 3 and H 2 . Effect of metal nature on reductive amination was investigated with biomass-based furfural as a typical substrate. Among the tested heterogeneous metal catalysts, cobalt proved to be the most effective metal for the synthesis of the corresponding primary amine. Under a relatively mild reaction condition, 98.9 % yield of furfurylamine was obtained over Raney Co and it can be reused more than eight times without a significant decrease in the catalytic performance. By extensively studying the catalytic pathways and reaction mechanism, it is found that the selectivity to primary amine and secondary amine was governed by the relative rate of hydrogenolysis and hydrogenation of the Schiff base intermediate. The superiority of Raney Co in furfurylamine synthesis can be ascribed to its high efficiency on hydrogenolysis of the Schiff base intermediate and its low performance in the hydrogenation of the Schiff base, carbonyl group and furan ring. Furthermore, ammonia greatly promoted the catalytic hydrogenolysis of the Schiff base intermediate over Raney Co without clear deactivation of the metal active sites.
研究领域:
化学工程
·
生物质转化
·
催化科学
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2019
·
IF 3.131
Hao Yang,Hanlin Ding,Xiaonuo Zhang,Xuegang Luo,Yu Zhang
In this study, a new surface-modified biobased composite was obtained by modifying the surface of fungal mycelium microspheres (FHMs) with polydopamine (PDA). A. niger mycelium/PDA microspheres (AM/PDA microspheres) were used as a highly efficient adsorbent for the removal of U(VI) ions. This study examined the effects of the initial pH, ionic strength, and electrolyte ions on the U(VI) adsorption capacity of the AM/PDA microspheres. The results confirmed that U(VI) was successfully adsorbed on the AM/PDA microspheres. We compared their adsorption capacity with that of other adsorbents, and the adsorption rate and adsorption capacity of the AM/PDA microspheres were found to be higher than those of the other adsorbents. Equilibrium was achieved after 300 min, and the AM/PDA microspheres had a maximum adsorption capacity of 250.70 mg/g. We aimed not only to investigate the factors that affect the adsorption process but also to provide a new mycelial-based composite adsorbent for U(VI)-contaminated water.
研究领域:
环境科学
·
生物材料学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ORGANIC CHEMISTRY
·
2021
·
IF 4.354
Hao Song,Yao Xiao,Zhuohua Zhang,Wanjin Xiong,Ren Wang,Liangcheng Guo,Taigang Zhou
A simple and efficient copper-catalyzed selective transfer hydrogenation of nitriles to primary amine-boranes and secondary amines with an oxazaborolidine–BH3 complex is reported. The selectivity control was achieved under mild conditions by switching the solvent and the copper catalysts. More than 30 primary amine-boranes and 40 secondary amines were synthesized via this strategy in high selectivity and yields of up to 95%. The strategy was applied to the synthesis of 15N labeled in 89% yield.
研究领域:
有机化学
·
催化化学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2015
·
IF 5.056
Shu Zhu,Song Zhao,Zhi Wang,Xinxia Tian,Mengqi Shi,Jixiao Wang,Shichang Wang
In this work, non-woven fabric supported polyetersulfone (PES)/polyaniline (PANI) blended membranes were fabricated by immersion precipitation process and used as the substrates for thin-film composite (TFC) membranes. Polyamide (PA) TFC nanofiltration membrane was then prepared via interfacial polymerization of piperazine (PIP) in water with trimesoyl chloride (TMC) in hexane over PES and PES/PANI substrates. The prepared substrates and TFC nanofiltration membranes were characterized with respect to chemical structure , morphology and separation performance. The influence of substrate properties on the PA layer was investigated and discussed. It is evident from the results that the differences in substrate properties affect the diffusion and reaction of the monomers during interfacial polymerization process, leading to the changes in the thickness and cross-linking degree of the PA layer. Compared to PES substrate, the PES/PANI substrate comprising 0.2 wt% of PANI could greatly enhance flux and salt rejection of TFC nanofiltration membrane.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）