RSC Advances
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2023
·Vol. 13
·期 36
·24878-24886
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IF 3.9
Depeng Li,Qingqing Guan,Xiaoyun Hu,Yuhong Su,Zhen Su
A new simple Pt(II) terpyridyl salt that shows reversible response towards acetonitrile and irreversible response towards methanol has been reported, accompanied with the colorimetric/luminescent changing from red to yellow. Experimentally and theoretically, the spectroscopic change derives from the hydrogen bonds between crystal water in the Pt(II) terpyridyl salt and external organic molecules, and the different strength of hydrogen bond leads either reversible or irreversible stimuli-response. Furthermore, this Pt(II) terpyridyl salt has been on one hand applied as a probe for sensing acetonitrile in water solution, with high selectivity, good reversibility, proper sensitivity and fast response rate, and on the other hand as advanced anticounterfeiting materials. The current study provides a new approach to acquire and design either reversible or irreversible stimuli-responsive luminescent materials.
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SCIENCE OF THE TOTAL ENVIRONMENT
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2022
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IF 10.753
Yaqiong Zhang,Xu Xu,Lei Zhang
Accurate on-site profiling of the pollutants is of vital significance for estimating environmental pollution . Herein, we propose a paper-based fluorescence-sensing system to precisely report the level of multiple pollutants. A high-performance fluorescence-sensor for apparatus-free and visual on-site tandem precisely reporting phosphate ions (Pi), o -phenylenediamine (OPD), and benzaldehyde (BA) levels have been fabricated successfully by introducing synthesized red emission (>600 nm) fluorescent chromophore 10-(diethylamino)-3-hydroxy-5,6-dihydrobenzo [c]xanthen-12-ium (HTD) into the environment of CoZn zeolitic imidazolate framework (CoZn ZIF) by a simple stirring method. CoZn ZIF@HTD with the bimetallic nodes not merely provided main Zn 2+ sites for specific recognition of Pi to generate an enhanced red fluorescent optical signal , Co 3+ /Co 2+ exhibited excellent peroxidase-like activity for the catalytic oxidation of OPD substrate in the presence of H 2 O 2 resulting in color changing from red to yellow. Subsequently, the obvious yellow fading of the OPDox species took place with the addition of BA. By virtue of the sensitively visual tandem detection of Pi, OPD, and BA, the sensor can be applied to real wastewater samples. Meanwhile, this fluorescent sensor was further adopted for practical application in confocal cell imaging and security inks. Overall, this work established a fluorescent sensing system with integrated multifunctional applications for environmental and biological samples, implying the great potential for simultaneous real-time cascade detection of various important pollutants with the merit of low-cost, time-saving, and easy-to-use.
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Acta Biomaterialia
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2022
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IF 10.633
Bojiao Tang,Xiaoling Xie,Ruhui Yang,Sijie Zhou,Ronggui Hu,Jiayao Feng,Qinxiang Zheng,Xingjie Zan
In recent decades, the use of protein drugs has increased dramatically for almost every clinical indication, including autoimmunity and cancer infection, given their high specificity and limited side effects. However, their easy deactivation by the surrounding microenvironment and limited ability to pass through biological barriers pose large challenges to the use of these agents for therapeutic effects; these deficits could be greatly improved by nanodelivery using platforms with suitable physicochemical properties. Here, to assess the effect of the hydrophobicity of nanoparticles on their ability to penetrate biological barriers, the hydrophobic amino acid tyrosine (Y) was decorated onto hexahistidine peptide, and two nanosized YHmA and HmA particles were generated, in which Avastin (Ava, a protein drug) was encapsulated by a coassembly strategy. In vitro and in vivo tests demonstrated that these nanoparticles effectively retained the bioactivity of Ava and protected Ava from proteinase K hydrolysis . Importantly, YHmA displayed a considerably higher affinity to the ocular surface than HmA, and YHmA also exhibited the ability to transfer proteins across the barriers of the anterior segment, which greatly improved the bioavailability of the encapsulated Ava and produced surprisingly good therapeutic outcomes in a model of corneal neovascularization . Statement of significance Improving the ability to penetrate tissue barriers and averting inactivation caused by surrounding environments, are the keys to broaden the application of protein drugs. By decorating hydrophobic amino acid, tyrosine (Y), on hexahistidine peptide, YHmA encapsulated protein drug Ava with high efficiency by co-assembly strategy. YHmA displayed promising ability to maintain bioactivity of Ava during encapsulation and delivery, and protected Ava from proteinase K hydrolysis. Importantly, YHmA transferred Ava across the corneal epithelial barrier and greatly improved its bioavailability, producing surprisingly good therapeutic outcomes in a model of corneal neovascularization. Our results contributed to not only the strategy to overcome shortcomings of protein drugs, but also suggestion on hydrophobicity as a nonnegligible factor in nanodrug penetration through biobarriers.
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ANALYTICAL CHEMISTRY
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2022
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IF 8.008
Huasheng Lai,Zhengyi Chen,Gongke Li,Zhuomin Zhang
Complex and tedious sample preparation processes have greatly limited rapid analyses of biological samples. In this work, an all-in-one sample preparation strategy based on a miniaturized gas membrane separation/oven ring enrichment (GMS/ORE) device was developed for efficient surface enhanced Raman scattering (SERS) analyses of trace biomarkers in biofluid samples. This strategy integrating gasification separation, liquid trapping, derivatization SERS activation, and coffee-ring enrichment could highly promote the efficiency of sample preparation. Meanwhile, the edges of membranes modified by the hydrophobic-infusing slippery liquid-induced uniform “coffee-ring” effect could significantly improve the sensitivity and stability for SERS quantification. By adapting proper derivatization approaches to the miniaturized GMS/ORE pretreatment, the matrix effects in samples could be prominently eliminated, and clear SERS responses could be obtained for the selective analyses of target biomarkers. The miniaturized GMS/ORE device was practically applied for SERS analyses of trace biomarkers in biofluids, including hydrogen sulfide in saliva samples, creatinine in serum samples, and sarcosine, creatinine, and dimethyl disulfide in urine samples. Accurate quantification of all biomarkers was achieved with recoveries of 89.5%–120.0%, and the contents found by GMS/ORE-SERS matched well with those found by corresponding chromatographic methods with relative errors from −8.6% to 9.3%. The miniaturized GMS/ORE device with multiple parallel processing units could simultaneously treat eight samples in one run with a total analysis time of 40 min. Such an efficient all-in-one strategy integrated on a miniaturized device possesses great potential for fast on-site/point-of-care detection in analytical science and clinical medicine.
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FOOD CHEMISTRY
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2022
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IF 9.231
Xiang-Rong Cheng,Jia-Hui Ma,Issoufou Amadou,Wei Zhao,Yu-Yao Chen,Chen-Xi Zhang,Bin Guan
Xiaoheiyao is the rhizome of Inula nervosa Wall., a traditional spice and medicinal herb in China. In this study, the creatinine inhibitor from Xiaoheiyao extract and also the effects and mechanism on the production of heterocyclic aromatic amines (HAAs) were investigated. Xiaoheiyao extract inhibited the total contents of seven detected HAAs in grilled beef patties, particularly aminoimidazole-azaarenes (AIAs) in a dose-dependent manner, reaching a maximum inhibition rate of 62% for total HAAs and 73% for AIAs. The most effective subfraction of Xiaoheiyao extract (IER80) contained abundant potential creatinine inhibitors, as revealed by immobilized creatinine probe, HPLC and UPLC-MS/MS analyses. Moreover, electrophilic p -coumaric acid derivatives were discovered from IER80 by feature based molecular networking. p -Coumaric acid was demonstrated to inhibit the contents of total HAAs and AIAs in grilled beef patties and model system. Quantitative analyses of the precursor and intermediates of AIAs in model system revealed that p -coumaric acid mainly affected the generation of AIAs by inhibiting creatinine.
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ENERGY & FUELS
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2022
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IF 4.654
Nini Zhang,Sheng-Li Chen,Ruyue Zhu,Wei Sun
In this work, we found that besides formaldehyde, an important intermediate in methanol-to-olefins (MTO) conversion, acetaldehyde and acetone were also formed in the MTO reaction and accurately quantified their contents in the reaction system with time on stream. The formation of formaldehyde, acetaldehyde, and acetone follows a sequential reaction. Acetaldehyde could induce the formation of aromatic species, promoting the conversion of lighter aromatic species across cages to polycyclic aromatics and further promoting the formation of insoluble coke, resulting in rapid catalyst deactivation. In addition, acetaldehyde enhances the propagation of the aromatic-based cycle, which leads to the formation of ethylene, thus resulting in the high ethylene selectivity. In contrast, acetone has little effect on the working lifetime of the catalyst and the product distribution of the MTO reaction, although it can be converted to light hydrocarbons similar to that of MTO under the circumstance of the MTO reaction.
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JOURNAL OF HAZARDOUS MATERIALS
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2022
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IF 14.224
Zhenyu Fan,Li Wang,Qingqing Jiang,Daming Fan,Jianbo Xiao,Mingfu Wang,Yueliang Zhao
Home cooking has been considered as an indoor pollution problem since cooking oil fumes contain various toxic chemicals such as aldehydes. Fortifying edible oils with docosahexaenoic acid (DHA) has been applied to enhance the nutritional value of oils. This study designed a frying simulation system and examined the effect of oil type, DHA fortification, heating time, and addition of natural antioxidant on the emissions of aldehydes from heated oils. Results showed that linseed oil had the highest total aldehyde emissions, followed by soybean oil, peanut oil, and palm oil. Fortifying soybean oil with DHA increased the toxic aldehydes emitted. Quercetin, a flavonoid , significantly reduced aldehydes emitted from DHA-fortified soybean oil (by up to 39.80%) to levels similar to those of normal soybean oil. Further analysis showed that DHA-fortified soybean oil with quercetin had a significantly higher DHA and unsaturated fatty acids (UFAs) content than the control oil at each heating time point. The result indicated that quercetin inhibited emissions of aldehydes, at least in part, by protecting UFAs from oxidation . Collectively, quercetin could be used as a natural additive in DHA-fortified and normal cooking oils to reduce aldehyde emissions, indoor air pollution , and preserve functional DHA and other UFAs.
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NEW JOURNAL OF CHEMISTRY
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2022
·Vol. 46
·期 36
·17540-17547
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IF 3.925
Xi Zhou,Yun Hu,Yufeng Cao,Yuan Liu,Tao Qian
Formaldehyde (FA) can exist in living cells and is involved in many physiological processes within organelles, especially lysosome, which plays pivotal roles in the FA metabolism of living systems. Therefore, a technique for the rapid and effective detection of FA is in high demand. Herein, a novel signal-on fluorometric strategy for FA determination based on Ag+-mediated nitrogen–sulfur co-doped carbon dots (Ag-M-NSCDs) was developed. The FA-responsive sensor was facilely prepared through introducing Ag+ into the lignin-derived nitrogen–sulfur co-doped carbon dots (NSCDs), accompanied by fluorescence (FL) reduction. With the addition of the FA solution, the redox interaction between Ag+ and FA led to the generation of Ag nanoparticles (Ag NPs) and separation of Ag+ from the surface of NSCDs, both of which contributed to the remarkable FL recovery. Furthermore, the fluorometric sensing system can selectively and sensitively detect FA with a linear response in a concentration range of 0–500 μM (R2 = 0.997) and a low detection limit of 500 nM based on three times signal-to-noise criteria, which make the nanosensor favorable for monitoring FA in real water samples and live cells. Furthermore, it showed superior lysosomal targeting performance with a Pearson coefficient of 0.87, which demonstrates a new method for FA-related biological studies and bioanalysis.
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JOURNAL OF CHROMATOGRAPHY A
·
2022
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IF 4.601
Rui Mao,Wei Li,Penghao Jia,Hui Ding,Tekleab Teka,Lin Zhang,Zhifei Fu,Xuebin Fu,Sunjay Kaushal,Zhiying Dou,Lifeng Han
Unsaturated fatty acids (UFAs) are fatty acids with one or more carbon-carbon double bonds (C=C). They are building blocks of structurally complex lipids. According to the position of C=C bond in the UFAs, there are multiple isomers with different physiological activities. Therefore, an accurate understanding of UFAs is essential. Combining Paternò-Büchi (PB) reaction with tandem mass spectrometry (MS/MS) analysis has been successfully used to identify unsaturated lipids in bio-samples. However, there are still some challenges, such as low reactive rate and low MS response of PB products. In this study, 3-pyridinecarboxaldehyde (3-PYA) was selected as an efficient PB reagent for the first time. According to the nitrogen rule, introduction of nitrogen did not only make the target MS and MS/MS ions to be easily identified but also increase the ionization efficiency significantly. The developed method in this study demonstrated greater efficiency and sensitivity for the identification of UFAs in total lipid extracts from bovine liver compared with other commonly used PB reagents.
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DESALINATION
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2022
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IF 11.211
Quan Hu,Dongsheng Li,Suilin Liu,Guangming Yan,Jie Yang,Gang Zhang
To meet separation need under various conditions, a great variety of membranes have been fabricated via interfacial polymerization (IP), especially for the polyester membranes with intrinsic micro-porosity. However, the aqueous phase used for making those polyester membranes often requires alkaline environment , resulting in a quite different procedure compared with conventional polyamide membranes, which may alter IP process that have been widely studied. Here, the KOH, NaOH and LiOH were used respectively to create alkaline environment whereby the impact of alkali on polyester membranes were investigated systematically. It was found that the alkali not only showed influence on the IP process, but it also affected diffusion of monomers in aqueous phase across the water/hexane interface. When the concentration of alkali or pH of the aqueous phase were the same, the membranes using KOH as base were found to have the lowest permeability while the membranes using NaOH showed the highest permeability, and the membranes using LiOH showed the moderate permeability. The mechanism of the permeance trend was further investigated in detail, and it was found that the monomer containing hydroxyl not only could act as IP monomers, but also could play role as surfactant, thus affected its own diffusion to organic phase. This study paves the way for a wider integration of these macrocyclic polyphenols in the field of high-performance nanofiltration (NF) membranes, and also offers a new approach to optimize the performance of NF membranes based on polyester.
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MICROCHEMICAL JOURNAL
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2022
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IF 5.304
Yanxin Li,Chong Ma,Jinmao You,Shijuan Zhang
Deuterated dansylhydrazine (d 6 -DH) was prepared by one step simple reaction, and applied to the stable isotope labeling (SIL) of aldehydes with the aid of commercially available dansylhydrazine (DH). Common multiple reaction monitoring (MRM) parameters was obtained by a few standard samples and then applied to other aldehydes. Hence levels of unknown aldehydes in real samples was identified using the sensitive MRM mode but not the traditional scan mode. The SIL strategy also enhanced the quantitation accuracy because samples and standards were d 6 -DH and DH labeled respectively, and then mass spectrum (MS) analyzed simultaneously. Analytes and standards were analyzed in identical MS conditions, and thus matrix effect which caused by different ionization efficiency between samples and standards was greatly minimized. The proposed method was applied to the SIL analysis of 21 aldehydes with limits of detection (LODs) ranged from 8.0 − 14.2 ng/kg. The recoveries were in the range of 85.3–96.4%, and the matrix effect was in the range of 90.1–102.6%.
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JOURNAL OF FOOD COMPOSITION AND ANALYSIS
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2023
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IF 4.3
Xiaojie Geng,Qing Li,Xinlei Wang,Lin Zhu,Bowen Wang,Fuping Zheng,Guangnan Wang,Erbao Chen,Yuhang Zhang
Environmental factors are the key factors affecting the fermentation of traditional fermented foods . However, the effects of environmental factors on flavor metabolism of Laobaigan-flavor Baijiu have not been described. In this study, we applied HS-SPME–GC–MS and physicochemical parameters analysis to reveal the dynamic of volatile flavor compounds and environmental factors, and indicated the effects of environmental factors on the succession of volatile flavor compounds. The fermentation process was divided into three stages: alcohols (628 mg/kg) and acids reached higher in the early stage (0–8 days), while aldehydes existed more in the middle stage (10–17 days) and esters accumulated until the middle (2501 mg/kg) or later (1168 mg/kg) stages (20–29 days). Meanwhile, environmental factors changed rapidly ( p < 0.05), and significantly correlated with the formation of flavor compounds at different stages. Among them, pH and protein content were significantly related to esters (|r| > 0.6) esterified by monocarboxylic acid in the middle stage, while esters (|r| > 0.7) synthesized with hydroxyl acid had significant relations with temperature and moisture in the later stage. Our study indicated the correlations between the dynamic of environmental factors and the succession of volatile flavor compounds, and it provided a potential approach to manage environmental factors to improve the fermentation of Baijiu.
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危险品化学品经营许可证（带存储）