ANALYST
·
2025
·
IF 3.3
Die Hu,Jiawen Xiang,Jingying Guo,Chao Wang,Ji Qi,Bowei Li,Xiaoyan Wang,Xin Zhang,Lingxin Chen,Xuming Zhuang
In this study, we developed a simple and cost-effective paper and cloth-based microfluidic fluorescence sensing device for the selective and quantitative detection of L-cysteine (L-Cys) in deep-sea water, addressing the need for efficient monitoring of this critical metabolite of deep-sea creature’s biomarker. The device employs gold nanoparticles (Au NPs) immobilized on a cloth-based substrate and Rhodamine B (Rh B) molecules. In the presence of L-Cys, strong interactions between L-Cys and the Au NPs release Rh B molecules, restoring fluorescence proportional to the cysteine concentration. The device achieves a low detection limit of 0.52 nM with a dynamic range of 1-100 nM. It demonstrates excellent selectivity over other amino acids, stability over 30 days, and reproducibility. Its practical applicability was confirmed using deep-sea cold seep water samples, yielding recoveries of 98.07%-102.62%. Compared to existing methods, this platform offers enhanced portability, lower cost, and faster response, making it suitable for in-situ environmental monitoring.
研究领域:
分析化学
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环境科学
·
海洋生物学
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DOI
PubMed
高影响因子
BIOELECTROCHEMISTRY
·
2025
·
IF 4.5
Jiahao Sun,Shihang Lu,Ming Cheng,Nianting Xue,Shiqiang Chen,Guangzhou Liu,Yuanyuan Gao,Li Lai,Wenwen Dou
Microbiologically influenced corrosion (MIC) affects offshore production activities severely. Although adding biocides is a simple method, it can cause environmental damage over time. Using green biocide enhancers is a viable strategy to reduce the amount of biocides. In this study, four novel peptides, named Peptide T/Tc/Ts/Tcs, were designed by a natural peptide extracted from the Arctic sea squirt to enhance the efficacy of tetrakis hydroxymethyl phosphonium sulfate (THPS) in mitigating the biocorrosion of EH36 steel caused by Desulfovibrio ferrophilus . The combination of 40 ppm THPS and 100 nM Peptide T/Tc/Ts/Tcs reduced the corrosion rates of EH36 steel by 68 %, 71 %, 86 %, and 90 % after the 7-d incubation, respectively. Notably, 40 ppm THPS + 100 nM Peptide Ts/Tcs achieved similar antimicrobial and biocorrosion mitigation effects as 100 ppm THPS. It suggests that optimizing the cationic and hydrophobic properties of peptides could enhance the bactericidal properties of biocides.
研究领域:
材料科学
·
微生物学
·
环境科学
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DOI
PubMed
高影响因子
Journal of Analysis and Testing
·
2026
·
IF 7
Lu Heng,Chen Jingru,Zhang Maosheng,Guo Liangqia
Microplastics (MPs) are emerging pollutants, considered one of the most serious threats to the ecosystem and human health. Nile Red (NR) is the most widely used dye for visualizing MPs. However, NR staining is affected by natural organic materials and shows weak fluorescence for certain types of MPs, such as polyamide (PA) and polyvinyl chloride (PVC), as well as MPs with fiber morphology. Herein, a rapid, universal staining method for visualizing MPs was proposed, using CsPbBr 3 perovskite nanocrystals (NCs) as a fluorescent dye synthesized by natural deep eutectic solvents (NADESs) as solvents and surface ligands (CsPbBr 3 @NADESs NCs). The staining method proved to be highly effective for common MPs, including PA and PVC MPs. Moreover, natural organic substances, such as cellulose, lignin, mussel shell, chitin, clam shell, shrimp shell, humic acid, and sand grains, could not be stained by CsPbBr 3 @NADESs NCs, which allowed MPs to stand out for visual detection even that the environmental samples were incompletely pre-treated. This study demonstrated CsPbBr 3 @NADESs NCs as a promising fluorescent dye for visual detection of MPs in environmental samples.
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SCIENCE OF THE TOTAL ENVIRONMENT
·
2019
·
IF 5.589
Shumin Cheng,Siyang Li,Narcisse T. Tsona,Christian George,Lin Du
The mixed stearic acid (SA)/sterol systems were used as sea spray aerosol mimics to get more insights into the alterations in surface properties of aerosols induced by sterols. By means of surface pressure (π)–area (A) isotherms and polarization modulation-infrared reflection absorption spectroscopy (PM-IRRAS), the effect of cholesterol (chol), stigmasterol (stig) and ergosterol (erg) on the lateral packing and chain conformation of SA monolayer was explored. The fact that the excess areas of mixing of the mixed monolayers exhibit significant deviations from ideally mixed film proves that, the sterols are miscible with SA throughout all the monolayer compositions and surface pressures examined. The lift-off areas in π–A isotherms were found to increase with increasing mole fraction of sterols, indicating that expulsive interactions exist between SA and sterols, which are more pronounced when the mole fraction of sterols is 0.7. In addition, the peak intensities of ν a (CH 2 ) and ν s (CH 2 ) in IRRAS spectra decrease with increasing sterols levels, which is consistent with our findings in the π–A isotherms, that the addition of sterols leads to a looser chain packing in SA monolayer. The proportion of gauche defects in SA monolayer induced by the sterols follows the order cholesterol < stigmasterol < ergosterol at a certain sterol level, as reflected by the decreasing peak intensities of ν a (CH 2 ) and ν s (CH 2 ). Consequently, the sterols generally give rise to considerable expanding effects on SA monolayer, which are particularly pronounced for stigmasterol and ergosterol , suggesting that the additional alkyl side chains and double bonds of the sterols play a role on disordering SA monolayer. The present study is likely to shed light on many boundary processes take place at the interface of SSAs, in particular, transport processes of water and trace gases across the interface.
研究领域:
大气化学
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环境科学
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表面科学
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气溶胶物理
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DOI
高影响因子
Marine Life Science & Technology
·
2026
·
IF 5.7
Zhang Yong,Guo Yan-Qing,Li You,Zou Zheng-Biao,Chen Zhe-Wen,Zhao Rong,Capon Robert J.,Wu Tai-Zong,Xie Chun-Lan,Yang Xian-Wen
A systematic chemical investigation of the deep-sea-derived fungus Penicillium limosum ZEN48 resulted in the isolation of four new indole-diketopiperazine alkaloids, limopiperazines A–D ( 1 – 4 ), alongside 16 known analogues ( 5 – 20 ). The structures of the new compounds were determined through comprehensive spectroscopic analysis, quantum chemical calculations, X-ray crystallography, and biogenetic considerations. Limopiperazine C ( 3 ) potently inhibited osteoclast differentiation and disrupted actin ring formation. Integrated RNA sequencing, RT-qPCR and molecular docking revealed that limopiperazine C exerts the anti-osteoclastogenic effect by modulating the ferroptosis signaling pathway via targeting heme oxygenase-1 (Hmox-1), positioning it as a promising lead compound for developing anti-osteoporotic agents.
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DOI
高影响因子
Journal of Materials Chemistry A
·
2015
·Vol. 3
·期 33
·17217-17223
·
IF 7.443
Liang Huang,Xiang Gao,Qiang Dong,Zhimi Hu,Xu Xiao,Tianqi Li,Yongliang Cheng,Bin Yao,Jun Wan,Dong Ding,Zheng Ling,Jieshan Qiu,Jun Zhou
Pseudocapacitors, which store charge through fast reversible redox reactions occuring at the surface of the electrode, could offer higher specific capacitance than electrochemical double-layer capacitors (EDLCs). However, the prime pseudocapacitive phase, transition metal oxides usually have poor electronic conductivity, limiting their practical application. Here, we fabricated highly conductive HxMoO3−y nanobelts as electrode materials for pseudocapacitors. This electrode has demonstrated great electrochemical activity in various aqueous cation solutions with the highest volumetric capacitance of over 350 F cm−3. Significantly, this electrode has high specific capacitance as well as excellent cycling stability in sea water. Moreover, this hybrid composite also exhibits remarkable ion electrosorptive capacity (4 mg g−1) as a desalination electrode.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2014
·
IF 2.045
Shurui Xu,Shuanshi Fan,Yanhong Wang,Xuemei Lang
We first measured the hydrate equilibrium of two real gases from the South China Sea in the pressure range of 1.85 MPa to 9.32 MPa. Then, three kinetic hydrate inhibitors (poly(N-vinyl) pyrrolidone, Inhibex501, and synthesized KHI-HY4) were tested from 275.15 K to 283.15 K and the pressure range from 2 MPa to10 MPa in the case of two real gases under 11.6 K to 14.0 K subcooling. The results show that the maximum subcooling temperature of three hydrate inhibitors increased with the increase of the pressure for the real gases, and hydrate formation induction time increased more than 1.5 times with the inhibitor concentration decreasing for HY4 or Inhibex501 for the real gases at a certain subcooling range. It was believed that each inhibitor has its optimal subcooling for usage in real gas. When the subcooling reached the optimal value, remarkable inhibitory performance could be displayed.
研究领域:
化学工程
·
能源科学
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高影响因子
MOLECULES
·
2018
·Vol. 23
·期 3
·590
·
IF 3.098
Yujing Qin,Qingxia Yuan,Yuexing Zhang,Jialu Li,Xinjiao Zhu,Lingling Zhao,Jing Wen,Jikai Liu,Longyan Zhao,Jinhua Zhao
Enzyme-assisted extraction optimization, characterization and in vitro antioxidant activity of polysaccharides from sea cucumberPhyllophorus proteus(PPP) were investigated in the present study. The optimal extraction conditions with a yield of 6.44 ± 0.06% for PPP were determined as follows: Extraction time of 2.89 h, ratio of extraction solvent to raw material of 16.26 mL/g, extraction pH of 6.83, exraction temperature of 50 °C and papain concentration of 0.15%. Three purified fractions, PPP-1a, PPP-1b and PPP-2 with molecular weights of 369.60, 41.73 and 57.76 kDa, respectively, were obtained from PPP by chromatography of FPA98Cl and Sepharose CL-6B columns. Analysis of monosaccharide compositions showed that PPP-1a consisted ofN-acetyl-galactosamine (GalNAc), galactose (Gal) and fucose (Fuc), PPP-1b of Fuc as the only monosaccharide and PPP-2 of glucuronic acid, GalNAc and Fuc. Sulfate contents of PPP, PPP-1a, PPP-1b and PPP-2 were determined to be 21.9%, 20.6%, 25.2% and 28.0% (w/w), respectively. PPP and PPP-1a had higher molecular weight and intrinsic viscosity than those of the PPP-1b and PPP-2. PPP, PPP-1a, PPP-1b and PPP-2 exhibited obvious activities of scavenging 1,1-diphenyl-2-picrylhydrazyl radical, hydroxyl radical, superoxide radical and ABTS radical in different extent, which suggested that the polysaccharides fromPhyllophorus proteusmay be novel agents having potential value for antioxidation.Keywords:sea cucumber;polysaccharide;enzyme-assisted extraction;characterization;antioxidant activity
研究领域:
海洋生物学
·
生物化学
·
药学
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DOI
PubMed
高影响因子
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
·
2023
·
IF 2.4
Jiaxing Liu,Huangchen Zhang,Xiang Ding,Linbin Zhou,Zhixin Ke,Jiajun Li,Yehui Tan
Diazotrophic organisms are vulnerable to physical dynamic processes. However, the interactions and mechanisms of multiple dynamic processes on nitrogen fixation remain unclear. This study aimed to investigate one of these interactions; we conducted field investigations and bioassay experiments in the northeastern South China Sea, which faces the Kuroshio current and coastal upwelling. Using 15 N tracer and molecular biology methods, we found that the eastern Guangdong upwelling, having high phosphorus and a lower N:P ratio, had higher nitrogen fixation rates as well as a higher abundance of diazotrophic cyanobacteria Trichodesmium spp. and UCYN-A compared with nonupwelling area. Additionally, a higher abundance of diazotrophic cyanobacteria occurred near the bottom of the euphotic zone along the shelf break that was affected by the Kuroshio current. Field incubation experiments confirmed that phosphorus increased the nitrogen fixation rates and stimulated the growth of cyanobacteria in the area affected by upwelling. Taken together, our results indicated that warmer surface water with a high N:P ratio likely mixed with upwelled phosphorus-rich water containing diazotrophic cyanobacteria, which were transported by the intensified Kuroshio current under the influence of the 2015/16 El Niño . This mixing then triggered a high abundance of diazotrophic cyanobacteria. These findings provide new insights into how the interaction of multiple dynamic processes can regulate nitrogen fixation.
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DOI
高影响因子
FOOD RESEARCH INTERNATIONAL
·
2023
·
IF 8.1
Yuying Zhang,Ying Wang,Xuhui Huang,Jie Zheng,Libo Qi,Baoshang Fu,Lei Qin
With the diversity of consumer demands for healthy food, stricter requirements have been put forward for the product quality of sea eel ( Astroconger myriaster ). From the common experience, remarkable differences could be observed between different parts of the sea eel. The textures, basic nutritional compositions, and lipid compositions from seven parts of sea eel were investigated to reach a comprehensive evaluation of the nutritional value. Sea eel was high-fat fish which contained 21.65% to 22.84% crude fat from part one to part seven. The seventh segment exhibited a lower moisture content (51.32%) and higher contents of protein (22.76%), ash (2.46%), carbohydrate (0.80%). The third and fourth parts remained higher hardness and good water-holding capacity. Sea eel had sixteen fatty acids, and the tail possessed a higher proportion of n − 3/n − 6 polyunsaturated fatty acids. Twenty-seven lipid species were determined in sea eel, and highly unsaturated fatty acids mainly stemmed from triglycerides, while saturated fatty acids mainly existed as diglycerides. Section six and seven were primarily diglycerides and monoglycerides. According to the characteristics of different parts, it can provide support for standardized segmentation of sea eel and quality control of different parts.
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PubMed
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ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
·
2023
·
IF 6.8
Xuda Wang,Zelong Zhao,Jingwei Jiang,Rui Mi,Xiaoyan Guan,Ying Dong,Shilei Li,Zhong Chen,Shan Gao,Bai Wang,Yao Xiao,Yongjia Pan,Zunchun Zhou
Aquaculture provides essential food for humans, and the health of farmed species is particularly important for the aquaculture industry. Aquaculture environment could be a sink of plastic debris (PDs) due to the enclosed character and heavy use of plastics. Gut microbiota of aquaculture species could respond to the exogenous pollutants and regulate the health of hosts. Here, variations in gut microbiota of Apostichopus japonicus induced by the ingested nanoplastics (NPs) were investigated by a lab experiment. We selected a NPs concentration gradient of 100 mg/kg and 500 mg/kg to simulate microplastic pollution to A. japonicus , and the significant differences in gut microbiota composition after 21 days of NP exposure were evaluated. According to the high-throughput sequencing from time series samples, a decrease of diversity in gut microbiota of A. japonicus with dietary NPs was observed. In addition, the gut microbiota compositions of sea cucumbers with and without NPs exposure were also distinct, expressing as enrichment of Bacteroidota while reducement of Proteobacteria under NPs stresses. Combined the results of network analysis, the less complexity and stability of gut microbiota in sea cucumbers with dietary NPs were proved. Based on the neutral community model, the ingested NPs elevated the contribution of stochastic processes for the gut microbiota assembly in sea cucumbers. Our study showed that substantial variations in gut microbiota of A. japonicus under NPs stresses, and also explored the underlying mechanisms regulating these changes. This research would offer new meaningful insights into the toxicity of NPs on sea cucumbers, contributing a solid fundament to improve the health of sea cucumbers under NPs stresses.
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DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Jianbo Zhang,Kun Lei,Ji Cheng,Lingqing Luo,Xiaojun Liu,Jinghua Li
This study focused on preparing sea urchin palladium-copper nanospines (PdCuAu NAs) using a one-step reduction method. PdCuAu NAs is a highly branched nanomaterial composed of nanospines, and its unique structure and trimetallic composition give it excellent Fenton catalytic activity and photothermal properties. The characterization of PdCuAu NAs was carried out using SEM, XPS , and UV-Vis techniques. Under near-infrared light, PdCuAu NAs were quickly heated to 50 ℃. Compared to traditional photocatalysts , PdCuAu NAs showed better Fenton catalytic activity in the degradation of organic dyes such as MB. Furthermore, it exhibited good photothermal stability and reusability after multiple thermal cycles and repeated use. Thus, the results showed that PdCuAu NAs had a good degradation effect on organic wastewater.
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危险品化学品经营许可证（带存储）