JOURNAL OF FOOD ENGINEERING
·
2021
·
IF 5.354
Anlei Ge,Shahid Iqbal,Xiao Dong Chen
In this study, three different types of O/W emulsions were prepared by dispersing 20 wt% soybean oil in aqueous continuous phases, consisting 4 wt % SPI and 0.5 wt% polysaccharide (pectin, iota carrageenan , or kappa carrageenan) composition. The emulsions were heated to thermal denaturation temperature of SPI (90 °C, 30 min), and their rheology, microstructure, and particle size was deeply examined and compared with unheated systems. The results showed that the shear stress, viscosity, shear modulus, and the droplet size of heated emulsions were higher than those of unheated systems. This behavior suggested that thermal treatment exposes the positively charged and hydrophobic regions of SPI in acidic medium (pH 4), which allowed to attach the anionic polysaccharide strongly by electrostatic and hydrophobic interactions, especially in SPI-kappa carrageenan emulsion. This study may be useful for the creation of highly viscous O/W products having higher rheology and stability, but reduced total fat contents.
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高影响因子
SURFACE REVIEW AND LETTERS
·
2023
·
IF 1.1
JINGBAO WANG,MOHAMMAD TABISH,JINGMAO ZHAO
Magnesium alloy with good application potential has a poor corrosion resistance, so it is essential to develop a new corrosion inhibitor and investigate the inhibition mechanism for magnesium alloy. In this work, three vapor phase corrosion inhibitors (VCIs) were used for AZ31B magnesium alloy under a simulated ocean–atmosphere environment, and the inhibition behaviors and mechanisms were studied. The inhibition performances of the three VCIs were evaluated by Digital Still Camera, electrochemical tests and scanning electron microscopy (SEM). Fourier transform infrared spectroscopy (FTIR) combined with X-ray photoelectron spectroscopy (XPS) was used to further explore the inhibition mechanism. Compared to benzoic acid and ammonium benzoate, o-phthalic anhydride can provide the best protection for AZ31B magnesium alloy. The i corr was reduced from 11.18 μ A cm − 2 (blank) to 0.65 μ A cm − 2 and the ( R f + R ct ) was increased from 1478.1 Ω cm 2 (blank) to 3129.8 Ω cm 2 with o-phthalic anhydride as VCI. O-phthalic anhydride combined with Mg 2 + to form different complexes with different molecular weights, which developed a more compact protective film on the AZ31B surface. Overall, the o-phthalic anhydride can be utilized as an excellent VCI for AZ31B magnesium alloy in a simulated ocean–atmosphere environment.
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高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2020
·
IF 4.192
Yu Lu,Wanjun Jin,Yuerong Yang,Yue Jia,Lujia Sun,Jie Liu,Langhong Wang,Fuxing Zhang,Wupeng Ge,Jiansheng Wang,Linjuan Huang,Zhongfu Wang
Goat milk oligosaccharides are complex carbohydrates with a variety of biological functions. Free oligosaccharides from goat milk show more similarity to human milk than cow milk. At present, changes in goat milk glycoconjugates at different parities remain poorly studied. Herein, we qualitatively and quantitatively compared the goat milk glycoprotein N/O-glycome at different parities using a stable isotope labeling followed by electrospray ionization mass spectrometry and online hydrophilic interaction chromatography. N-Glycans were mainly fucosylated and nonfucosylated nonsialylated, and both fucosylation and sialylation gradually increased with parity, amounting (at the third parity) to 1.25 times and 3.3 times those of the first parity, respectively. O-Glycans were mostly nonfucosylated and nonsialylated, and sialylation increased with increasing parity, and Neu5Ac-sialylated was up to 9 times higher in the third parity than in the first parity, whereas Neu5Gc-sialylated was 5.5 times higher. This study provides a reference for exploring an alternative milk source closest to human milk and for the development of humanized formula milk.
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高影响因子
MOLECULES
·
2019
·Vol. 24
·期 15
·2769
·
IF 3.06
Xican Li,Xiaojian Ouyang,Minshi Liang,Dongfeng Chen
The biological process, 3-O-galactosylation, is important in plant cells. To understand the mechanism of the reduction of flavonol antioxidative activity by 3-O-galactosylation, myricetin-3-O-galactoside (M3OGa) and myricetin aglycone were each incubated with 2 mol α,α-diphenyl-β-picrylhydrazyl radical (DPPH•) and subsequently comparatively analyzed for radical adduct formation (RAF) products using ultra-performance liquid chromatography coupled with electrospray ionization quadrupole time-of-flight tandem mass spectrometry (UPLC-ESI-Q-TOF-MS) technology. The analyses revealed that M3OGa afforded an M3OGa–DPPH adduct (m/z873.1573) and an M3OGa–M3OGa dimer (m/z958.1620). Similarly, myricetin yielded a myricetin–DPPH adduct (m/z711.1039) and a myricetin–myricetin dimer (m/z634.0544). Subsequently, M3OGa and myricetin were compared using three redox-dependent antioxidant analyses, including DPPH•-trapping analysis, 2-phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl 3-oxide radical (PTIO•)-trapping analysis, and•O2inhibition analysis. In the three analyses, M3OGa always possessed higher IC50values than those of myricetin. Conclusively, M3OGa and its myricetin aglycone could trap the free radical via a chain reaction comprising of a propagation step and a termination step. At the propagation step, both M3OGa and myricetin could trap radicals through redox-dependent antioxidant pathways. The 3-O-galactosylation process, however, could limit these pathways; thus, M3OGa is an inferior antioxidant compared to its myricetin aglycone. Nevertheless, 3-O-galactosylation has a negligible effect on the termination step. This 3-O-galactosylation effect has provided novel evidence that the difference in the antioxidative activities of phytophenols exists at the propagation step rather than the termination step.
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高影响因子
PROCEEDINGS OF THE COMBUSTION INSTITUTE
·
2022
·
IF 6.535
Wen-luan Xie,Bin Hu,Ying Liu,Hao Fu,Ji Liu,Bing Zhang,Qiang Lu
Lignin pyrolysis involves complex radical reactions, whereas the radical chain process, especially the influence of aliphatic substituents , has been rarely studied. Herein, the typical β -O-4 lignin dimer, phenethyl phenyl ether (PPE), and three aliphatic substituted derivatives of PPE, namely α -OH substituted, β -CH 2 OH substituted, and α,β -disubstituted PPE ( α PPE, β PPE, and αβ PPE) were employed as model compounds. DFT calculations, electronic analyses, and fast pyrolysis experiments were combined to investigate three core steps of the radical chain mechanism in lignin pyrolysis, i.e., homolysis, hydrogen abstraction , and radical decomposition. The pathway involving successive C β -O homolysis → α -hydrogen abstraction → C β -O breakage of α -dehydrogenated radical is dominated for the pyrolysis of aliphatic substituted β -O-4 linked lignin, with the formation of phenolics . The hydrogen abstraction reactions at the C α site are obviously superior to those at other sites for PPE derivatives, due to the p- π conjugate stability. Notably, α -hydrogen abstraction can be significantly promoted by the π -electron-dispersing α -OH substitution. The decomposition step of dehydrogenated radicals can be facilitated by the electron-donating β -CH 2 OH substitution, where the C β -O breakage of the α -dehydrogenated radical is dominant. Totally, aliphatic substituents can improve the radical growth stage and change the competitiveness of the hydrogen abstraction and radical decomposition reactions. The fast pyrolysis experiments of PPE and α PPE gave direct proof that the generation of characteristic products from the radical chain process, i.e., benzaldehyde and phenylacetaldehyde, was enhanced by the α -OH substitution. The present work offers the potential to give a comprehensive image of the radical chain mechanism in lignin pyrolysis.
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高影响因子
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
·
2022
·Vol. 46
·期 11
·15174-15181
·
IF 4.672
Yang Liu,Xuesong Cai,Dinggui Chen,Yan Qin,Yuan Chen,Jinxiang Chen,Chenglu Liang
Summary The large-scale applications of energy storage system via lithium-ion batteries (LIBs) put forward demands for high capacity, high safety, and low cost of materials. Covalent organic polymers have attracted extensive attention because of their high capacity, flexible structural design, high safety, abundance, and low cost. Here, 2,3,5,6-tetraamino-p-benzoquinone and hexaketocyclohexane octahydrate were chosen as monomers to construct the covalent organic framework (TH-COF) cathode materials with active C=O and C=N groups. The TH-COF was further composed with reduced graphene oxide (rGO) and the prepared TH-COF/rGO cathode provided a capacity of 135 mAh g −1 after 600 cycles at 1 C current density. In addition, after 100 cycles, the cathode delivered capacities of 118 and 73 mAh g −1 at the high current densities of 5 C and 20 C, respectively, displaying superior rate performances. The TH-COF/rGO electrode exhibited high capacity and stability, making it a promising cathode material for the next generation LIBs.
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高影响因子
ACS Applied Energy Materials
·
2023
·
IF 6.4
Guandong Wang,Wenjuan Xiang,Huize Liu,Yizhi Yin,Dandan Ma,Jinfu Ma
The key to the development of metal–air batteries is the research on efficient and stable non-noble metal bifunctional electrocatalysts that can simultaneously catalyze the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in the same electrolyte. Ce–O–C single-component materials have abundant oxygen vacancies and commendable electrical conductivity; therefore, they have great application potential in bifunctional catalysis. However, their application is limited by the harsh synthesis conditions (pyrolysis at >1750 °C). Herein, CeO2C2/NC material is obtained during the pyrolysis of Ce-MOF at 900 °C, and it is found that the CeO2C2/NC material has a satisfactory ORR/OER bifunctional catalytic effect. In addition, CeO2C2/NC possesses good electrochemical properties, such as ORR Eonset = 0.92 V, E1/2 = 0.83 V (vs reversible hydrogen electrode (RHE)), and an excellent Tafel slope of 77.7 mV dec–1, outperforming the commercial Pt/C catalyst. X-ray photoelectron spectroscopy (XPS) analysis reveals that Ce3+ and its chemisorbed oxygen (Oβ) percentages of 50.33 and 79.37%, respectively, are the main reasons for the production of abundant oxygen vacancies. The prepared Ce–O–C series material will be applied to zinc–air batteries (ZABs), which is expected to improve the comprehensive performance of ZABs. The results can provide ideas for the development of ORR/OER single-component bifunctional catalysts.
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高影响因子
Nano Energy
·
2021
·
IF 17.881
Zhen Liu,Di Jiang,Linjing Yang,Jiayuan Yu,Xiao Li,Xiaoyan Liu,Lili Zhao,Xiao Li Zhang,Feng Han,Weijia Zhou,Hong Liu
How do the synergistic effects work and which dominate the distribution of active sites, that's an interesting question in mang plasmon-enhanced catalysis. Herein, we put a deep insight into the distribution of active sites and the mechanism of charge transfer at the noble metal-metal oxide interface for accelerating the hydrogen evolution reaction (HER) kinetics. A heterostructure of Au loaded MoO 2 nanosheets (Au-MoO 2 ) is prepared by the light-reduction method. EXAFS analysis demonstrates the tight coupling at Au-MoO 2 interface through the Au-O bond. An enhanced HER activity is observed with an overpotential decrease of (Δη) 176 mV and Tafel slop down to 52.5 mV/dec. KPFM measurement and FEM simulation verify the high local field enhancement at the junction. This field induces the concentrated surface charge through the Au-O bond. DFT calculation confirms the upraises filling of Op orbital in the Au-O bond, thus degrading the hydrogen adsorption energy level for HER kinetics.
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高影响因子
JOURNAL OF FOOD ENGINEERING
·
2024
·
IF 5.3
Jingye Zhu,Suping Zhu,Jianshe Chen,Yong Chen
Emulsions stabilized by normal starch-based emulsifier could be easily digested for fat absorption. In this study, a novel design of resistant starch-based emulsifier (RSE) is expected to be a promising strategy in reducing fat digestibility . Waxy corn starch (WCS) was used to prepare RS by pullulanase debranching, and then RS was esterified with different hydrophobic agents of octenyl succinic anhydride (OSA) and dodecenyl succinate anhydride (DDSA) to prepare OSA/DDAS modified RSE (OSA-R and DDSA-R). The structure and emulsification properties of OSA-R and DDSA-R were comprehensively investigated. The results showed that RS content of WCS was increased from 0.17% to 35.52% by pullulanase debranching and then RS contents of OSA-R (37.53%) and DDSA-R (42.18%) could be further increased by OSA/DDSA modifications. Moreover, both OSA-R and DDSA-R stabilized emulsions were stable under neutral and alkaline conditions and were of good quality within 10 days of storage at 4 °C. Compared with OSA-R stabilized emulsion, DDSA-R stabilized emulsion had higher acid stability, CaCl 2 stability and storage stability. Furthermore, in vitro digestion study demonstrated that both OSA-R and DDSA-R stabilized emulsions exhibited strong resistance against digestion. In conclusion, two high resistant starch-based emulsifiers obtained by OSA/DDAS modifications could be used for stabilizing oil-in-water emulsions, which provide important references for the selection of RSE esterification agents and the application of RS in food industry.
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高影响因子
ACS Catalysis
·
2025
·
IF 13.1
Zean Xie,Kemeng Song,Yu Ren,Liyu Hou,Runqi Hu,Jianmei Li,Qi Shi,Dong Li,Wencui Li,Xiaoqiang Fan,Lian Kong,Xia Xiao,Zhen Zhao
Recently, some traditional oxide supports, such as nano TiO2 and ZrO2 with high surface energy, have been found to be partially reduced to generate oxygen vacancies and coordinatively unsaturated metal (Mcu) cations as efficient active sites for nonoxidative propane dehydrogenation (PDH). However, the primary challenge in their industrial applications is rapid deactivation because of coke, over-reduction, and aggregation under the reaction conditions of high temperature and reducible atmosphere. Herein, we reported that cost-effective and environmentally friendly Zr-doped TiO2 (TixZr1) prepared by a simple coprecipitation method can be used as a highly efficient and stable catalyst for PDH. Ti3Zr1 exhibited the C3H6 formation rate [r(C3H6)] of 0.6 mmol g–1 min–1 at 550 °C, which was 17 times that of pure TiO2, and a deactivation constant (Kd) 2.8 times lower than that of commercial TiO2. Moderate Zr doping promotes the generation of surface active lattice oxygen, which can be reduced at a relatively low temperature to form oxygen vacancies and Ti(Zr)cu–O acid–base pairs as the active sites for PDH, and their number is in line with r(C3H6) of TixZr1 catalysts. With the increase of the Zr doping amount, the bulk crystal phase of TixZr gradually transforms from Zr-doped anatase TiO2 to TiZrO4 via Ti2ZrO6 with enhanced thermostability, which can inhibit over-reduction and aggregation of the nano-oxide.
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高影响因子
REPRODUCTIVE TOXICOLOGY
·
2025
·
IF 2.8
Zhiheng Shangguan,Kaiqiang Yang,Qi Pan,Hongli Hu,Pan Wang
Endocrine disruptors are environmental chemicals that can interfere with the endocrine system. However, research on endocrine disruptors that interfere with androgen action is still limited. In this study, two new environmental androgens were identified. N-Phenyl-2-naphthylamine (PNA) and o-tolidine are dye intermediates widely used in industry to produce organic pigments. We found that both PNA and o-tolidine activated androgen receptor (AR) transcriptional activity in the luciferase reporter assay and bound to AR-ligand binding domain directly in the surface plasmon resonance analysis. In vivo studies showed that PNA and o-tolidine induced the proliferation of seminal vesicle cells and increased seminal vesicle weight in immature male rats, indicating that these two compounds had androgenic activity in vivo . In addition, in mature male rats, PNA and o-tolidine reduced sperm concentration and motility and increased sperm deformities, and caused atrophy of the seminiferous tubules of the testis and decreased testosterone levels. These results suggest that PNA and o-tolidine are novel environmental androgens, which bind and activate AR and have toxicological effects on male reproductive function.
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DOI
PubMed
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2025
·
IF 7.8
Haifeng Jiang,Meng Song,Yuhang Li,Wei Jia,Jiahao Qi
Catalytic pyrolysis of waste plastics under nitrogen-rich conditions to produce nitrogenous compounds represents a highly promising technological approach. It can achieve high-value conversion of waste plastics and expand the synthesis process of nitrogenous products. This work uses polyethylene terephthalate (PET) as the raw material and urea as the nitrogen source to produce aromatic amines, and prepares Zn/CuCo 2 O 4 spinel catalysts to enhance the above synthesis process. The results indicate that the optimal mass ratio of PET and urea is 1:1, where the relative content of nitrogenous compounds in the liquid product reaches 86.69 %, and the selectivity of aromatic amines reaches 52.48 %. The addition of the spinel catalyst significantly improves the selectivity of aromatic amines. Compared with the CuCo 2 O 4 catalyst, ZnCo 2 O 4 exhibits superior catalytic conversion performance. The optimal addition ratio of the ZnCo 2 O 4 catalyst is 15 %, and the optimal pyrolysis temperature is 550 ℃. Under these conditions, the selectivity of aromatic amines increases by 11.11 % compared to non-catalytic pyrolysis. In addition, the obtained solid residue containing the used catalyst is considered as a potential adsorbent and can be applied in water treatment. It has significant removal ability for methylene blue dye. This work not only provides a feasible approach for the production of aromatic amines, but also provides important support for the high-value utilization of waste plastics.
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高影响因子
危险品化学品经营许可证（带存储）