JOURNAL OF PHYSICAL CHEMISTRY A
·
2018
·
IF 2.836
Yanliang Zhao,Meishan Wang,Panwang Zhou,Songqiu Yang,Yan Liu,Chuanlu Yang,Yunfan Yang
Nitrogen-containing anthraquinone derivatives are widely applied in vegetable fiber dyes. In this paper, the fluorescence quenching mechanism by an acylamino group twist in the excited state for the 1-(acylamino)anthraquinones (AYAAQs) derivatives in acetonitrile is investigated by density functional theory (DFT) and time-dependent density functional theory (TD-DFT) methods. The calculated Stokes shift is in good agreement with the experimental data. The energy profiles show that each AYAAQs derivative reveals a barrierless twist process, indicating that the involvement of acylamino group rotation in addition to proton transfer becomes as another important coordinate in the excited state relaxation pathway. The effects of electron-substituted group promote twist process compared with 1-aminoanthraquinone (AAQ). Then, the cross points are searched by the constructed linearly interpolated internal coordinate (LIIC) pathways for AYAAQs, demonstrating that the potential energy curves of the S1 and T2 states intersect each other and are in accord with the El-Sayed rules. So one can conclude that the acylamino group twist and following intersystem crossing (ISC) processes are important nonradiative inactivation channel for the S1 state of the AYAAQs derivatives, which is more prone to proton transfer process and can explain the low fluorescence efficiency. In addition, we have measured the phosphorescence spectra of AAQ, and on this basis, it can be predicted that the phosphorescence may occur for the AYAAQs derivatives.
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高影响因子
ACS Applied Nano Materials
·
2021
·
IF 5.097
Ying Zheng,Mingqiang Cheng,Xinyan Wu,Shuang Zhang,Zhu Liu,Yanqiang Li,Weiquan Shao,Qing Lin,Jinshan Tan,Shouwu Gao,Yongcheng Zhang,Wanneng Ye
Mechanical energy can be directly transformed into chemical energy by piezoelectric materials, namely, piezocatalysis, which is a potential tactic for renewable clean energy collection and environmental purification. The piezocatalytic efficiency strongly relies on the piezoelectric property and free charge concentration of piezocatalysts. Here, four samarium-doped (1 – x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 nanostructures were designed to investigate the correlation between the piezoelectric property and piezocatalytic performance. The diverse dye degradation efficiencies confirmed the high piezoelectric coefficient toward high catalytic activity. The degradation efficiency for acid orange 7 (AO7) was 100% within 20 min, while those for methyl orange (MO), methylene blue, and rhodamine B dyes were 97, 78, and 72%, respectively, within 40 min under ultrasonic vibration only. Furthermore, high catalytic efficiency of 96% was still maintained for AO7 degradation after 10 consecutive degradation cycles for samarium-doped 0.70Pb(Mg1/3Nb2/3)O3-0.30PbTiO3 due to its high piezoelectric coefficient. The investigation of the catalytic mechanism demonstrated that hole and superoxide radicals were the primary active species toward AO7 degradation, whereas hydroxyl and hole radicals were for MO degradation. This work not only demonstrates the highly efficient catalytic activity of samarium-doped (1 – x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 nanostructures but also gives a deep comprehension of the correlation between the piezoelectric property and catalytic performance of piezocatalysts.
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高影响因子
JOURNAL OF MATERIALS CHEMISTRY
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2012
·Vol. 22
·期 18
·8759-8763
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IF 5.968
Yuhan Lin,Fang Zhang,Daocheng Pan,Hexing Li,Yunfeng Lu
TiO2/(ZnS)x(CuInS2)1−x nanocomposites were prepared from oleic acid-capped TiO2 nanocrystals and alloyed (ZnS)x(CuInS2)1−x nanocrystals. Element mapping and transmission electron microscopy (TEM) results suggested that the nanocomposites exhibit homogeneous composition with uniform mesoporous structure. High photocatalytic activities driven by simulated solar light were achieved owning to their high surface area and efficient electron transfer from (ZnS)x(CuInS2)1−x to TiO2. This work enables the synthesis of a large variety of photocatalysts from nanocrystal building blocks for various applications beyond photodegradation of organic pollutants.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2024
·Vol. 59
·期 7
·3177-3190
·
IF 3.5
Lu Xiaohui,Yu Shouwu,Gao Tian,Chen Yifu,Zhao Xiang,Xiao Shujuan
The wettability of the membrane surface is very important for the separation of oil-in-water emulsion. In this paper, the hydrophilic NH 2 -CAU-1 was added to the membrane surface by interfacial polymerization, which greatly improved the separation efficiency of oil-in-water emulsion. The effect of the amount of NH 2 -CAU-1 on the separation efficiency of TFN membrane was studied, and it was determined that TFN-1 membrane had ultra-high separation efficiency of oil-in-water emulsion (> 97.60%). TFN-1 membrane has a high underwater oil contact angle (higher than 139.53°), resulting in excellent oil adhesion resistance on the membrane surface. The universality and cycling performance of TFN-1 membrane were tested, and UWOCA had good stability under strong acid, strong base and different NaCl concentrations, and the separation efficiency did not change significantly after 8 cycles. The results show that TFN-1 membrane has excellent performance in separating oil-in-water emulsions and has broad application prospects in separating oil-in-water emulsions stabilized by surfactants. Graphical abstract
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高影响因子
ENVIRONMENTAL MICROBIOLOGY
·
2026
·Vol. 28
·期 10
·e70453
·
IF 4
Jiao Chen,Yingyu Ji,Chaomin Sun,Shimei Wu
The reliance on conventional antibiotics and fungicides in food and agricultural systems drives drug-resistant pathogen spread and environmental contamination. Lipopeptides represent an eco-friendly alternative, but their efficacy is often limited by the presence of homologues with varying activities. Previously, we identified a novel lipopeptide, iturin W, whose C 14 variant exhibits superior efficacy against foodborne pathogens, whereas the C 15 homologue shows greater potency against plant pathogens. Notably, sorbitol supplementation shifts the homologue ratio from C 15 towards C 14 in iturin W. Here, we integrated transcriptomics, gene knockout and fermentation analyses to uncover the underlying mechanism. Our findings demonstrate that sorbitol induces metabolic reprogramming by enhancing glycolysis and oxidative phosphorylation while suppressing arginine and histidine biosynthesis. Key factors influencing this metabolic flux include SplA, DeoR/GlpR, RpoN and ResE. Importantly, knockout of splA significantly boosts the yield of C 14 iturin W. Furthermore, high aeration combined with histidine/arginine shifts production towards the C 15 variant, while low aeration with sorbitol enriches the C 14 form. Collectively, this work provides a mechanistic basis for rationally engineering microbial strains to optimize lipopeptide profiles, enabling precise biocontrol of bacterial versus fungal pathogens, thereby reducing reliance on synthetic chemicals and mitigating antimicrobial resistance in food and agricultural systems. Graphical Sorbitol supplementation shifts the lipopeptide homologue ratio from C 15 towards C 14 iturin W, and the underlying mechanism was uncovered by integrated transcriptomics, gene knockout and fermentation analyses. The findings provide a mechanistic basis for rationally engineering microbial strains to optimize lipopeptide profiles, enabling precise biocontrol of bacterial versus fungal pathogens.
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高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2023
·
IF 6.1
Tong Zhou,Xue Xia,Heping Cui,Khizar Hayat,Xiaoming Zhang,Chi-Tang Ho
The contribution of glutathione (GSH) and free amino acids degraded from GSH to the generation of pyrazines and 2,3-butanedione was illustrated during their interaction in the thermal treatment of the Amadori compound of alanine and xylose (ARP). GSH-degraded amino acids, glutamic acid (Glu), cysteine (Cys), and glycine (Gly), but not pyroglutamic acid (pGlu), could effectively capture α-dicarbonyls to facilitate the formation of pyrazines when ARP was heated with GSH. Deoxypentosones, the precursors of 2,3-butanedione, were largely consumed in the ARP–GSH model by the interaction with GSH and its degradative Cys compared with the ARP model. The addition of GSH and deoxypentosones inhibited the further degradation of deoxypentosones, resulting in less formation of 2,3-butanedione and other α-dicarbonyl compounds. Meanwhile, the reaction between GSH-degraded Cys and deoxypentosones to form sulfur-containing compounds such as thiols accelerated the consumption of deoxypentosones; thereby, the formation of 2,3-butanedione was severely interfered. However, this inhibition was compensated for by the GSH-degraded Gly through the addition between Gly and MGO and the subsequent deamination. The involvement of exogenous GSH could simultaneously boost the yields of 2,3-butanedione and pyrazines compared with those of ARP heated alone. As the degree of GSH degradation strengthened in the ARP-thermal-degraded GSH models, the yields of both pyrazines and 2,3-butanedione steadily increased.
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PubMed
高影响因子
Journal of Materials Chemistry A
·
2025
·Vol. 13
·期 47
·40842-40849
·
IF 9.5
Yumeng Hu,Yulin Yao,Zhenheng Diao,De Sun,Yuanyuan Dong
The catalytic performance of TS-1 zeolites in selective oxidation reactions is strongly influenced by both the TiO6 concentration and specific surface area. However, simultaneously optimizing these two critical factors remains a significant challenge. Herein, a biuret-assisted hydrothermal synthesis strategy was developed to fabricate hierarchical TS-1 zeolites with high TiO6 concentration and enhanced specific surface area. The interaction between the amide groups of biuret and Ti monomers promoted the formation of TiO6 during crystallization, while the confinement effect of biuret facilitated the construction of mesopores. The resulting hierarchical TS-1 exhibited good catalytic activity and stability towards 1-hexene epoxidation and oxidative desulfurization reactions, where the conversion was 1.41 and 3.36 times higher than that of conventional TS-1, respectively. This work provides a facile approach for designing high-performance TS-1 catalysts by dual regulation of active sites and porosity.
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高影响因子
FOOD CHEMISTRY
·
2026
·
IF 10.4
Tianyu Hu,Fang Zou,Jie Yu,Siqian He,Shiyun Lai,Yuanjie Teng,Zaifa Pan
UNCA employs upconversion nanoparticles as signal probes for specific IGF-1 recognition. • Single-molecule counting enables IGF-1 detection with a low LOD of 6.04 pg/mL. • This method exhibits low cross reactivity and good recovery rates in milk products. There is rapidly growing interest in food nutrition assessment, particularly for nutrients present at low abundance. Here, an upconversion nanoprobe counting analysis (UNCA) is designed for ultra-sensitive detection of insulin-like growth factor-1 (IGF-1). The high sensitivity is attributed to the strong fluorescent intensity of upconversion nanoparticles (UCNPs) and highly specific antibody-antigen binding. Core–shell structured UCNPs are synthesized via co-precipitation followed by layer-by-layer epitaxial growth, and detection probes are constructed through hydrophilic ligand exchange and antibody conjugation. Two detection methods, traditional fluorescent intensity detection and single-molecule counting, are established with linear working ranges of 0.05–5000 ng/mL, which reach limit of detections (LODs) of 21.23 and 6.04 pg/mL, respectively. UNCA is further employed for analyzing three representative milk products, achieving recovery of 73.90%–107.09% with coefficients of variation (CVs) between 2.24% and 7.57%. This method demonstrates quantitative detection of trace-level IGF-1, especially via single-molecule counting. Download: Download high-res image (111KB) Download: Download full-size image
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PubMed
高影响因子
FOOD CHEMISTRY
·
2026
·
IF 10.4
Qingyi Wei,Xiaojian Fei,Hongbin Pu
Allyl isothiocyanate (AITC) was effectively encapsulated within HKUST-1. • HKUST-1@AITC exhibits a humidity-responsive release mechanism. • The vapor released from HKUST-1@AITC inhibits microbial growth. • HKUST-1@AITC significantly prolonged the shelf life of strawberries. Allyl isothiocyanate (AITC), a volatile compound predominantly found in mustard essential oil, has attracted significant attention as a potent natural antimicrobial agent for postharvest preservation of horticultural products. However, its high volatility, hydrophobicity, and pungent odor limit its application. In this study, a water-unstable metal–organic framework, HKUST-1 (MOF-199), was fabricated using a solvothermal method and functioned as a carrier of AITC. AITC was successfully encapsulated into HKUST-1 via impregnation, yielding HKUST-1@AITC with excellent humidity-responsive release behavior. As the relative humidity (RH) increased from 43% to 98%, the cumulative release rate of AITC rose from 41.06% to 54.82%. Moreover, HKUST-1@AITC and vapor-phase diffusion of AITC released from HKUST-1@AITC have shown to exhibit superior antibacterial activity. Application in strawberries showed that HKUST-1@AITC reduced weight loss by 25.05%, alleviated firmness loss by 39.89%, and effectively extended the storage duration to 7 days. Overall, HKUST-1@AITC shows potential use in active packaging to improve preservation of horticultural products.
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PubMed
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2026
·
IF 4.5
Linquan Li,Zongqiang Liu,Shanshan Zhang,Weijiong Dai,Yan Wang,Jiajun Zheng,Ruifeng Li
A low-cost seed-assisted route was developed to synthesize plate-like ZSM-5 zeolite. • The key factors governing the synthesis were systematically investigated. • The minimum thickness of the b -axis could reach ∼50 nm. • Reducing b -axis thickness of ZSM-5 zeolite improves its catalytic performance in 1-butene cracking. Plate-like ZSM-5 zeolites, featuring a shortened b -axis that effectively alleviates micropore diffusion limitations, display significant advantages in many catalytic reactions. However, current syntheses rely heavily on expensive organic structure-directing agents (OSDAs) and sometimes toxic fluoride reagents, making a low-cost synthesis route highly desirable. To fulfill this goal, we propose a seed-assisted strategy combined with γ-aminobutyric acid as an additive, which effectively reduces the consumption of OSDA. By tuning key parameters, the b -axis thickness can be precisely controlled during synthesis, the minimum thickness could reach ∼50 nm. Plate-like ZSM-5 zeolites with similar physicochemical properties but different b -axis thicknesses were tested in 1-butene catalytic cracking. Reducing the b -axis thickness could effectively enhance the catalytic activity and stability, the sample (P-6%) with the thinnest b -axis thickness exhibiting the best performance. TGA analysis of spent catalysts confirmed the superior coke tolerance of P-6%, and in situ UV-Vis spectroscopy investigation of organic intermediates formed during the reaction further confirmed its excellent activity and stability. Download: Download high-res image (256KB) Download: Download full-size image
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高影响因子
INTERNATIONAL DAIRY JOURNAL
·
2026
·
IF 3.1
Ximeng Wang,Yanyan Li,Wenhao Zou,Yuanxuan Jiang,Yongqi Yang,Qin Wang,Zhangguo Ma,Rodrigo Ledesma-Amaro,Liping Wang
To improve the storage stability and antioxidant activity of yogurt, an exopolysaccharide (EPS)-producing strain, Lactobacillus fermentum SN4-1, was isolated from traditional Qinghai yak yogurt, and the EPS biosynthetic pathway was analyzed via whole-genome sequencing. A novel EPS (EPS-2) from SN4-1 was purified by anion-exchange chromatography and characterized by HPLC, HPGPC, and FT-IR. SN4-1 was combined with a commercial starter, and its effects on yogurt quality during cold storage were evaluated. Results showed that EPS-2 mainly consisted of mannose, glucose, and galactose (molar ratio 5.93:1.19:1) with an average molecular weight of 40.3 kDa. SN4-1 contained an EPS gene cluster ( eps-2 ) and multiple probiotic-related genes. During cold storage, the EPS content in yogurt with SN4-1 peaked at 144.21 mg kg -1 on day 5. Accordingly, the yogurt exhibited higher hardness, adhesiveness, cohesiveness, and viscosity, with adhesiveness increasing by 198.81%. Its water-holding capacity was 10.35% higher than that of the control on day 15. Moreover, the yogurt demonstrated strong radical scavenging capacities (DPPH 89.49%, ·OH 76.32%, O 2 - 63.23%, ABTS ∙+ 90.14%). These findings highlight the potential of SN4-1 in developing stable, clean-label probiotic yogurt.
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高影响因子
Biology Direct
·
2026
·Vol. 21
·期 1
·113
·
IF 5.5
Wang Wei,Hu Yuanyuan,Xu Yan,Ding Ning,Wei Jiping,Li Cairong,Chen Yong
Background Doxorubicin (DOX) is a widely used broad-spectrum chemotherapy drug, but its severe organ toxic and side effects limit its clinical application. Tetrahydropalmatine (THP) protects against DOX-induced renal injury, yet its underlying mechanism remains unclear. This study aimed to verify THP’s protective effect and explore if it acts via the SIRT3-mediated Nrf2/HO-1 signaling pathway. Methods This study adopted an integrated in vivo and in vitro research system to explore the relevant mechanisms. In vivo, a DOX-induced mouse renal injury model was established with THP intervention; renal function was evaluated by detecting serum creatinine (Scr) and blood urea nitrogen (BUN), while renal injury severity was assessed via urine microalbumin (mALB) and urine albumin/creatinine ratio (UACR). Renal histopathological changes including glomerular injury and tubulointerstitial fibrosis were observed, and subcellular structures such as podocyte integrity and mitochondrial morphology were analyzed by transmission electron microscopy (TEM); additionally, the expression of pathway-related proteins was detected. In vitro, a DOX-induced cell injury model was constructed using mouse podocytes (MPC-5), and Western blot and immunofluorescence techniques were employed to determine the expression of key molecules in the Sirt3-Nrf2/HO-1 pathway, combined with in vivo and in vitro experiments to clarify the underlying mechanism. Results THP significantly attenuated DOX-induced renal injury, improved renal function (reduced Scr/BUN), mitigated histopathological/mitochondrial abnormalities, and preserved podocyte integrity. Molecularly, THP upregulates podocyte markers Nephrin/Podocin, enhances antioxidant capacity (increased GSH, SOD, and CAT, decreased MDA), inhibits inflammation (downregulated IL-6, IL-1β, and TNF-α), and suppresses apoptosis (downregulated Bax/caspase-3, upregulated Bcl-2). Notably, both in vivo and in vitro data link THP’s protection to SIRT3-mediated Nrf2/HO-1 pathway activation. Conclusion THP protects against DOX-induced renal injury in mice. Mechanistically, this may involve activating the SIRT3-mediated Nrf2/HO-1 pathway, improving podocyte function, and inhibiting oxidative stress, inflammation, and apoptosis.
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