ANALYTICAL CHEMISTRY
·
2023
·
IF 7.4
Yijian Zhao,Tianyue Liu,Jinghui Gao,Qiaojuan Zhang,Mengyu Liao,He Cheng,Jingsheng Tian,Zhiyi Yao
Aflatoxin B1 (AFB1) is a kind of potently carcinogenic fungal metabolite in food threatening human health, and it is crucial and challenging to develop advanced nonimmune approaches for AFB1 determination. Addressing this challenge, we successfully constructed a nanoassembly (PdE-PDI/SDS) by noncovalently coupling a cationic perylene diimide derivative (PdE-PDI) and sodium dodecyl sulfate (SDS), exhibiting high-density charges and a specific surface area for rapid sensing of AFB1. The large electronic conjugate structure and rigid plane of PdE-PDI enable it to form more stable σ–π, π–π coordination, and hydrogen bonds with AFB1. Additionally, the introduction of SDS significantly amplifies noncovalent interactions and enhances the quenching efficiency of PdE-PDI toward AFB1. The proposed PdE-PDI/SDS exhibited excellent specificity to AFB1 and showed dosage-sensitive detection with detection limit as low as 0.74 ng mL–1. Finally, the PdE-PDI/SDS was successfully applied in cereal samples with good recoveries from 94.61 to 109.92%. To our knowledge, this is the first time a fluorescent strategy from the point of self-assembly for AFB1 determination is reported, which holds great promise for wide applications of perylene diimide derivative in food safety.
研究领域:
食品安全
·
分析化学
·
纳米技术
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2020
·
IF 5.065
Wei Jin,Rongrong Wang,Xirong Huang
A bicontinuous microemulsion system consisting of sodium bis(2-ethylhexyl) sulfosuccinate (AOT), sodium dodecylsulfate (SDS), an aqueous solution (a 0.1 M disodium hydrogenphosphate/citric acid buffer solution of pH = 4.3), and decane was investigated in detail for applications as reaction medium for the horseradish peroxidase (HRP)/hydrogen peroxide-mediated synthesis of the conductive form of polyaniline (PANI). To formulate the optimal single-phase microemulsion with the phase inversion temperature being close to room temperature , the T - γ fishlike phase diagram of the AOT/SDS-buffer-decane pseudoternary system was determined. The effects of the surfactant concentration ( γ ), the oil-to-water ratio ( α ) and the temperature ( T ) on the conductivity of the resulting PANI and the underlying mechanism were investigated using UV–vis-NIR, ESR and small-angle X-ray scattering (SAXS) techniques. Results show that the bicontinuous microemulsion plays a template role in the PANI biosynthesis, and the PANI conductivity also depends on the activity and stability of the solubilized HRP, which are determined by the microdomain size of the microemulsions and the reaction temperature. As far as γ is concerned, it is found that as γ increases, the microdomain size of the bicontinuous microemulsion as well as the activity of the solubilized HRP decreases significantly, leading to a great decrease of the PANI conductivity. Compared with γ , the change of α has small effect on the PANI conductivity. As the α -dependent microdomain size changes little with increasing α , the small change of the PANI conductivity should be ascribed mainly to the HRP activity. For T , over the range of 20 °C–35 °C, it has a slight effect on the microdomain size of the bicontinuous microemulsion, but it has a marked effect on the enzymatic properties of HRP. As the temperature increases, the activity of HRP increases, but its thermal stability decreases greatly. Therefore, the thermal stability of HRP is the major factor causing that the PANI conductivity decreases significantly with increasing T . The present work deepens the understanding of the template effect of anionic surfactant aggregates in the biosynthesis of conducting PANI. To the best of our knowledge, this work is the first study of the use of bicontinuous microemulsions as reaction media for the enzymatic synthesis of a conducting polymer .
研究领域:
材料科学
·
生物化学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Teng Lu,Zhaomin Li,Liping Du
Inherent obstacles of hydrogen injection encompass preferential channeling through larger pathways, hampering microscopic sweep efficiency within porous media. This work pioneers hydrogen foam generation via co-injection with aqueous sodium dodecyl sulfate (SDS) to enhance subsurface hydrogen trapping capacity. SDS addition substantially reduces hydrogen-water interfacial tension and enhances viscoelasticity. In contrast to robust hydrogen foam stability, CO 2 foams display compromised integrity, stemming from surfactant aggregation and ensuing infiltration channels that permit aqueous phase CO 2 dissolution. Hydrogen foams conversely sustain uniform surfactant films, forestalling hydrogen ingress into water. Synergetic microfluidic and pore-scale simulations visualise mechanisms underlying intensified hydrogen capture and mobility reduction attributed to deformation and flow resistance when traversing constricted pores. Introducing the amphiphilic SDS surfactant considerably promotes hydrogen adsorption through its hydrophobic tail. Core flooding experiments quantify over 2 times hydrogen storage ratio amplification with SDS relative to sole hydrogen injection. The framework contributes pragmatic strategies to harness high-efficiency hydrogen foam for scalable clean energy storage.
研究领域:
能源科学
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环境工程
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DOI
高影响因子
OPTICAL MATERIALS
·
2024
·
IF 3.8
Mei Cai,Anze Shui,Hulei Yu,Chao He,Wenting Zhou
Photodegradation is a significant approach to protecting the environment. The BiOBr has attracted great interest due to its unique layered structure and narrow energy band. Herein, the hierarchical BiOBr with oxygen vacancy is fabricated via a facial solvothermal method using the Sodium dodecyl sulfate (SDS) additive. The concentration of oxygen vacancies improves with the increase of SDS content, which could enhance the band gap and the redox ability of BiOBr. The hierarchical BiOBr modified by SDS presents excellent photodegradation activity for RhB and MO under visible light due to the synergistic effect of the oxygen vacancies, the redox ability, porous structure, the separation of photoinduced electron-hole pairs, and light absorption capacity. Furthermore, the BiOBr0.70 presented outstanding photodegradation ability under natural solar light, suggesting the photocatalysts could meet certain practical applications.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
高影响因子
Foods
·
2026
·Vol. 15
·期 3
·
IF 6
Weiying Lu,Yumei Chen,Yuge Niu,Liangli (Lucy) Yu
Coffee proteins are key precursors of roasting flavor. However, heat-driven changes in the bean proteome remain underexplored. This work aimed to investigate these changes and study proteomic markers of the coffee bean. The green and roasted coffee beans were quantified for their total soluble protein and compared by sodium dodecyl sulfate–polyacrylamide gel electrophoresis (SDS–PAGE) and liquid chromatography–mass spectrometry (LC–MS) proteomics. The protein profiles identified by LC–MS were processed using principal component analysis (PCA) and partial least-squares discriminant analysis (PLS–DA) modeling to identify possible roast-sensitive protein markers. The alkaline-aided aqueous extract protein concentration was reduced from 14–23 g to 3–10 g/100 g dry weight (DW). SDS–PAGE showed dominant 17–26, 34–43, and 55–72 kDa bands weakened after roasting, while high molecular peaks (>180 kDa) were present only in roasted samples. In-solution tryptic digestion yielded nine protein groups. PCA scores revealed partial separation of green and roasted groups, while PLS-DA delivered unambiguous classification (Q2> 0.90 by cross-validation). The variable importance in projection scores highlighted that structural proteins in common plant beans are markedly down-regulated after roasting, indicating heat-induced structural disruption. The identified protein groups represent candidate markers associated with severe thermal treatment and provide possible molecular targets for investigating flavor precursor development.
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产品关联
DOI
PubMed
高影响因子
Arabian Journal of Chemistry
·
2020
·
IF 4.762
Yan Wang,Hongbing Wang,Xiyu Zhao,Chunling Li,Jianhui Luo,Shuangqing Sun,Songqing Hu
In the present study, SiO 2 nanoparticles were first hydrophobically modified and then added into anionic surfactant sodium dodecyl sulfate (SDS) stabilized water-based foam to improve the foam stability. The foam stability was experimentally evaluated by measuring surface tension, Zeta potential and half-life of the foam. The foam stabilizing mechanism was also studied from a micro perspective by molecular dynamics simulation through analyzing the equilibration configuration and MSD curve of both SDS surfactant and water molecules. The results show that foam exhibits an optimal stability when SiO 2 concentration is 0.35 wt% under a specific surfactant concentration (0.5 wt%) in this work. The addition of SiO 2 nanoparticles with suitable concentration could improve the adsorption between SDS molecules and nanoparticles, thus limiting the movement of SDS and restricting the movement of surrounding water molecules, which is beneficial to enhance the foam stability.
研究领域:
材料科学
·
表面化学
·
分子模拟
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产品关联
DOI
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
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2016
·
IF 2.857
Lingmei Li,Chengjian Wang,Shan Qiang,Jixiang Zhao,Shuang Song,Wanjun Jin,Bo Wang,Ying Zhang,Linjuan Huang,Zhongfu Wang
Glycosylation of many proteins has been revealed to be closely related with food allergies, and screening and structural analysis of related glycoproteins and glycoallergens are essential for studies in this field. Herein, we describe detailed N-glycoform analysis of all glycoprotein fractions of soybean protein isolate (SPI) separated by sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) to disclose structural features of the glycan moieties of more soybean glycoproteins. SPI was fractionated by SDS-PAGE, and the generated protein bands were recovered and subjected to in-gel N-glycan release and labeling using a one-pot method newly developed by our group, followed by detailed analysis by electrospray ionization mass spectrometry (ESI-MS) and online hydrophilic interaction liquid chromatography coupled with electrospray ionization tandem mass spectrometry (HILIC-ESI-MS/MS). As a result, we found seven bands mainly containing oligomannose-type glycans; two mainly contain core α1,3-fucosylated glycans, and six have no glycans. This study is the first report that discovers core α1,3-fucosylated N-glycans in bands 1, 2, and 6 and discloses bands 3, 4, 5, and 7 as glycoproteins and their N-glycoforms. Therefore, it can expand our knowledge about soybean protein glycosylation and provide significant structural reference for research of soybean allergens.
研究领域:
食品科学
·
蛋白质组学
·
分子生物学
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产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES B-BIOINTERFACES
·
2019
·
IF 3.973
Yuetai Zhao,Rui Wang,Kuanjun Fang,Yeqiang Tan,Shiquan Chen,Yan Guan,Longyun Hao
In this paper, the dispersion performance of biomacromolecule hydrolyzed cellulase from Trichoderma reesei on copper phthalocyanine (CuPc) pigment was first studied. The effect of hydrolysis time, cellulase concentration and environmental pH on the dispersion performance was investigated by particle size distribution and suspension transmittance measurement. The hydrolysis degree of cellulase was determined by FTIR, XRD, UV–vis and fluorescence spectra, potential and particle size analysis, respectively. Subsequently, the hydrolyzed cellulase was combined with sodium dodecyl sulfate (SDS) for acquiring better CuPc suspension based on their synergetic effects on dispersion. The optimal mass ratio of hydrolyzed cellulase to SDS was found to be 1:9. The resulting CuPc dispersion by this hydrolyzed cellulase/SDS composite was characterized by FTIR, TG, TEM, XRD analysis, respectively. This study demonstrated that there were strong interactions between hydrolyzed cellulase and SDS to result in synergistic dispersing effect on CuPc for better stability.
研究领域:
生物化学
·
材料科学
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产品关联
DOI
PubMed
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2020
·
IF 2.627
Xiaoyang Yu,Fan Li,Xuyang Miao,Ning Jiang,Ruowen Zong,Shouxiang Lu,Changhai Li
The presence of ethanol has an adverse effect on foam spreading, and ethanol fire is difficult to extinguish with aqueous fire-fighting foams. Thus, it is necessary to explore the foam formulation suitable for ethanol fuels and study the spreading behavior of foam over ethanol surface. In the current work, stable foams based on hydrocarbon surfactant (SDS), fluorocarbon surfactant (FC1157), and polymers (XG) were prepared by using the compressed-air foam system. The spreading behaviors of foam on polar ethanol and non-polar heptane surface were observed and compared. Furthermore, the effects of stabilizer concentrations, foam flow rates and expansion ratios on foam spreading performance were investigated, respectively. The results indicate that aqueous SDS foam can spread on the heptane layer continuously, but it is difficult to cover the ethanol surface. The addition of XG and FC1157 can synergistically improve the spreading performance of aqueous foam over ethanol. Depending on stabilizer concentrations, there are remarkable differences in foam spreading behaviors. Besides, different foam application parameters including expansion ratios and foam flow rates significantly affect the foam spreading rate, despite the same foam formulation. The research methods and results guide the optimal design of foam formulations as well as the practical application of aqueous foam for ethanol fire extinguishment.
研究领域:
化学工程
·
消防科学
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DOI
高影响因子
JOURNAL OF SURFACTANTS AND DETERGENTS
·
2019
·Vol. 22
·期 6
·1487-1494
·
IF 1.672
Kaihe Lv,Kaile Jia,Yugui Han,Qiuxia Wang,Xu Leng,Hui Yan,Han Jia
In our previous report, the mixed cationic/anionic surfactant system consisting of N -dodecyl- N -methylpyrrolidinium bromide (L12) and sodium dodecyl sulfate (SDS) showed good interfacial tension (IFT) reduction of water/model oil ( V toluene : V n -decane = 1:1). In the present study, the effects of divalent salts (MgCl 2 or CaCl 2 ) on the interfacial activity were systematically evaluated. The additional Mg 2+ ions greatly reduced the IFT to an ultralow value, whereas Ca 2+ ions caused the generation of the precipitates and resulted in increased IFT values. The precipitates disappeared in binary divalent salt solutions, and the IFT values remained at a low level. Based on the valence, polarizability, and hydrated radius of the ions, we proposed a model to explain the abnormal changes. The effects of NaCl and temperature were investigated to further verify our proposed mechanism. Moreover, the additional divalent salts obviously enhanced the stability of L12/SDS stabilized emulsions.
研究领域:
化学
·
界面科学
·
材料科学
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产品关联
DOI
高影响因子
LANGMUIR
·
2026
·
IF 4.4
Fuxiao Li,Li Zhang,Siheng Han,Lei Wang
Foam stability is significantly important for enhancing oil recovery. SiO2 nanoparticles have been widely used to improve foam stability, but hydrophilic SiO2 nanoparticles are limited in improving the stability of foam because they cannot stably adhere to the gas–liquid interface; therefore, surface modification is needed to improve their hydrophobicity. In this study, silane coupling agent (KH570) was used to modify the surface of SiO2 nanoparticles, and the effects of concentration and wettability of SiO2 nanoparticles on the property of SDS foam were explored. The results show that the concentration and wettability of SiO2 nanoparticles have little effect on the foam ability but have a great impact on the foam stability. The stability of the foam increases as the concentration of the SiO2 nanoparticles increases. As the contact angle increases, the stability of the foam first increases and then decreases. The optimal contact angle for stable foam is 70.4°, at which point the foam’s half-life time with 2 wt % SiO2 nanoparticles is 1450 s longer than that of unmodified SiO2 nanoparticles (950 s); the salt and oil resistance are also the best at this contact angle. A two-phase molecular dynamics model at the foam interface was constructed to study the effects of different SiO2 nanoparticle methylations on the stability of the SDS foam. The results indicate that as the degree of methylation of SiO2 nanoparticles increases, foam stability first rises and then decreases, reaching an optimum at 40% methylation. When the methylation degree is 40%, SiO2 nanoparticles not only adsorb near the gas–liquid interface but also jam in the plateau borders, resulting in the minimum water diffusion coefficient, and weaken the repulsive forces between DS– groups and Si–OH groups, thus slowing down the liquid drainage and coarsening process, thereby enhancing foam stability.
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2011
·
IF 3.068
Wenguang Leng,Shuxue Zhou,Guangxin Gu,Limin Wu
In this paper, sodium dodecyl sulfate (SDS) is used as dopant to manipulate both morphology and wettability of polyaniline (PANI). When SDS amount is controlled within a certain range, micro/nano double-rough PANI with hydrophobic surface can be obtained, while insufficient or excess SDS can only lead to hydrophilic PANI. The double-rough PANI shows stimuli-responsive change in wettability to either alkaline reaction or reduction reaction from hydrophobicity to hydrophilicity. This quick response can be applied to quantitatively estimate NaOH concentrations within the range of 10 −3 –10 −1 M and to detect various reducing liquids.
研究领域:
材料科学
·
化学工程
✓ 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）