LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 17

Search options

  1. Article ; Online: Visible fluorescent sensing of Cu

    Arputharaj, Emmanuvel / Singh, Shivangi / Pasupuleti, Raghavendra Rao / Dahms, Hans-Uwe / Huang, Yeou-Lih

    Analytica chimica acta

    2022  Volume 1231, Page(s) 340418

    Abstract: This study reports a facile approach for the fabrication of chitosan (CS, biopolymer)- and l-histidine (L-His, biomolecule)-stabilized self-assembled silicon nanoparticles (SiNPs) for sensing ... ...

    Abstract This study reports a facile approach for the fabrication of chitosan (CS, biopolymer)- and l-histidine (L-His, biomolecule)-stabilized self-assembled silicon nanoparticles (SiNPs) for sensing Cu
    MeSH term(s) Cadmium ; Chitosan ; Chromatography, Thin Layer ; Copper/chemistry ; Edetic Acid/chemistry ; Histidine ; Humans ; Ions ; Lead ; Ligands ; Mercury ; Nanoparticles/chemistry ; Silicon
    Chemical Substances Ions ; Ligands ; Cadmium (00BH33GNGH) ; Lead (2P299V784P) ; Histidine (4QD397987E) ; Copper (789U1901C5) ; Chitosan (9012-76-4) ; Edetic Acid (9G34HU7RV0) ; Mercury (FXS1BY2PGL) ; Silicon (Z4152N8IUI)
    Language English
    Publishing date 2022-09-20
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 1483436-4
    ISSN 1873-4324 ; 0003-2670
    ISSN (online) 1873-4324
    ISSN 0003-2670
    DOI 10.1016/j.aca.2022.340418
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article: Green sample pre-treatment technique coupled with UHPLC-MS/MS for the rapid biomonitoring of dietary poly-unsaturated (omega) fatty acids to predict health risks

    Pasupuleti, Raghavendra Rao / Tsai, Pei-Chien / Ponnusamy, Vinoth Kumar / Chen, Nai-Ching

    Chemosphere. 2022 Mar., v. 291

    2022  

    Abstract: Polyunsaturated fatty acids (PUFAs) consumption indicates beneficial effects on cardiovascular disease (CVD) and physiological processes in humans. However, the inappropriate ratio of omega-(ω)-PUFA levels in human blood is considered as raising the risk ...

    Abstract Polyunsaturated fatty acids (PUFAs) consumption indicates beneficial effects on cardiovascular disease (CVD) and physiological processes in humans. However, the inappropriate ratio of omega-(ω)-PUFA levels in human blood is considered as raising the risk of CVD. Therefore, monitoring dietary ω-FAs in human serum is vital for early diagnosis for individuals to predict CVD risk. This work reports a fast green sample pre-treatment protocol for sensitive and simultaneous monitoring of ω-3-FAs and ω-6-FAs in serum by novel in-syringe-based ultrasonication-assisted alkaline hydrolysis coupled with vortex-induced liquid-liquid microextraction (IS-USAH-VI-LLME) technique connected with UHPLC–MS/MS analysis. Factors affecting extraction recoveries of ten ω-PUFAs by the presented method were well-studied. ω-3 and ω-6 PUFAs demonstrated excellent linearities between the concentrations between 0.1–10,000 ng mL⁻¹ with good regression coefficients between 0.9910–0.9997. The detection and quantification limits were between 0.05–0.35 and 0.16–1.07 ng mL⁻¹, demonstrating that the presented method is highly sensitive and versatile. The precision of the technique was <8.2% that deemed acceptable in clinical analysis. Further, the proposed method was applied for ω-PUFAs analysis in human blood samples, and spiked recoveries showed between 80.32–119.34% with <9.82% precision. Results proved that the developed method is green, sensitive, and reliable to simultaneously determine ten ω-PUFAs in human blood samples for clinical diagnosis applications for predicting health hazards.
    Keywords alkaline hydrolysis ; blood serum ; cardiovascular diseases ; early diagnosis ; environmental monitoring ; humans ; liquid-phase microextraction ; risk
    Language English
    Dates of publication 2022-03
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 120089-6
    ISSN 1879-1298 ; 0045-6535 ; 0366-7111
    ISSN (online) 1879-1298
    ISSN 0045-6535 ; 0366-7111
    DOI 10.1016/j.chemosphere.2021.132685
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  3. Article ; Online: Low-cost disposable Poly(ethyleneimine)-Functionalized Carbon Nanofibers Coated Cellulose Paper as efficient solid phase extraction sorbent material for the extraction of Parahydroxybenzoates from environmental waters.

    Pasupuleti, Raghavendra Rao / Tsai, Pei-Chien / Ponnusamy, Vinoth Kumar

    Chemosphere

    2020  Volume 267, Page(s) 129274

    Abstract: Parahydroxybenzoates (parabens) are considered as emerging environmental contaminants because of their extensive usage in our daily life products, causing parabens contamination into environmental water systems and lead to toxic effects on environmental ... ...

    Abstract Parahydroxybenzoates (parabens) are considered as emerging environmental contaminants because of their extensive usage in our daily life products, causing parabens contamination into environmental water systems and lead to toxic effects on environmental health. This study describes a greener extraction method using a new cationic polymer poly (ethyleneimine) functionalized acid-treated carbon nanofibers (PEI-CNFs) coated cellulose paper (CP) as solid-phase extraction (SPE) sorbent material for the extraction of parabens from environmental water samples. The fabrication of PEI-CNFs modified CP was confirmed using field-emission scanning electron microscope, transmission electron microscopy, and fourier-transformer infrared spectroscopy techniques. Various factors affecting the adsorption and desorption of parabens on PEI-CNFs@CP and its extraction efficiencies were studied using HPLC-UV analysis. Under the optimal experimental conditions, maximum extraction efficiencies were achieved for four target parabens, and PEI-CNFs@CP/HPLC-UV method exhibited excellent linearities ranged from 0.5-50 ng mL
    MeSH term(s) Adsorption ; Aziridines ; Carbon ; Cellulose ; Chromatography, High Pressure Liquid ; Limit of Detection ; Nanofibers ; Solid Phase Extraction ; Water Pollutants, Chemical/analysis
    Chemical Substances Aziridines ; Water Pollutants, Chemical ; Carbon (7440-44-0) ; Cellulose (9004-34-6)
    Language English
    Publishing date 2020-12-11
    Publishing country England
    Document type Journal Article
    ZDB-ID 120089-6
    ISSN 1879-1298 ; 0045-6535 ; 0366-7111
    ISSN (online) 1879-1298
    ISSN 0045-6535 ; 0366-7111
    DOI 10.1016/j.chemosphere.2020.129274
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Green sample pre-treatment technique coupled with UHPLC-MS/MS for the rapid biomonitoring of dietary poly-unsaturated (omega) fatty acids to predict health risks.

    Pasupuleti, Raghavendra Rao / Tsai, Pei-Chien / Ponnusamy, Vinoth Kumar / Chen, Nai-Ching

    Chemosphere

    2021  Volume 291, Issue Pt 1, Page(s) 132685

    Abstract: Polyunsaturated fatty acids (PUFAs) consumption indicates beneficial effects on cardiovascular disease (CVD) and physiological processes in humans. However, the inappropriate ratio of omega-(ω)-PUFA levels in human blood is considered as raising the risk ...

    Abstract Polyunsaturated fatty acids (PUFAs) consumption indicates beneficial effects on cardiovascular disease (CVD) and physiological processes in humans. However, the inappropriate ratio of omega-(ω)-PUFA levels in human blood is considered as raising the risk of CVD. Therefore, monitoring dietary ω-FAs in human serum is vital for early diagnosis for individuals to predict CVD risk. This work reports a fast green sample pre-treatment protocol for sensitive and simultaneous monitoring of ω-3-FAs and ω-6-FAs in serum by novel in-syringe-based ultrasonication-assisted alkaline hydrolysis coupled with vortex-induced liquid-liquid microextraction (IS-USAH-VI-LLME) technique connected with UHPLC-MS/MS analysis. Factors affecting extraction recoveries of ten ω-PUFAs by the presented method were well-studied. ω-3 and ω-6 PUFAs demonstrated excellent linearities between the concentrations between 0.1-10,000 ng mL
    MeSH term(s) Biological Monitoring ; Chromatography, High Pressure Liquid ; Fatty Acids ; Fatty Acids, Omega-3 ; Fatty Acids, Unsaturated ; Humans ; Tandem Mass Spectrometry
    Chemical Substances Fatty Acids ; Fatty Acids, Omega-3 ; Fatty Acids, Unsaturated
    Language English
    Publishing date 2021-10-28
    Publishing country England
    Document type Journal Article
    ZDB-ID 120089-6
    ISSN 1879-1298 ; 0045-6535 ; 0366-7111
    ISSN (online) 1879-1298
    ISSN 0045-6535 ; 0366-7111
    DOI 10.1016/j.chemosphere.2021.132685
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Treatment of heavy metals containing wastewater using biodegradable adsorbents: A review of mechanism and future trends.

    Anderson, A / Anbarasu, A / Pasupuleti, Raghavendra Rao / Manigandan, Sekar / Praveenkumar, T R / Aravind Kumar, J

    Chemosphere

    2022  Volume 295, Page(s) 133724

    Abstract: The direct disposal of industrial effluents into the aquatic system is considered as a significant environmental hazard in many countries. Because of poisonous chemicals, substantial volumes of effluent release, as well as the lack of adequate of ... ...

    Abstract The direct disposal of industrial effluents into the aquatic system is considered as a significant environmental hazard in many countries. Because of poisonous chemicals, substantial volumes of effluent release, as well as the lack of adequate of conventional treatment methodologies, industrial effluent treatment is extremely difficult. Numerous researchers have been interested in adsorption technology for its high efficiency of pollutant removal, low cost, and abundantly available adsorbent. Various adsorbent materials, both natural and modified form, have been widely used for the removal of toxic contaminants from industrial effluent. This paper highlights recent advancements in multiple modification types to functionalize the adsorbent material, resulting in higher adsorption capacity on various toxic pollutants. This review provides an overview of the adsorption mechanism and parameters (pH, adsorbent dosage, initial concentration, temperature and interaction time), which influencing the removal efficiency of adsorbents. Furthermore, this review compiles the desorption study to recover the adsorbent and improve the cycle's financial viability. This review provides a concise overview of the future directions and outlook in the framework of adsorbent application for industrial wastewater treatment.
    MeSH term(s) Adsorption ; Metals, Heavy ; Waste Water ; Water Pollutants, Chemical/analysis ; Water Purification/methods
    Chemical Substances Metals, Heavy ; Waste Water ; Water Pollutants, Chemical
    Language English
    Publishing date 2022-01-28
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 120089-6
    ISSN 1879-1298 ; 0045-6535 ; 0366-7111
    ISSN (online) 1879-1298
    ISSN 0045-6535 ; 0366-7111
    DOI 10.1016/j.chemosphere.2022.133724
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Iron-engineered mesoporous biocarbon composite and its adsorption, activation, and regeneration approach for removal of paracetamol in water.

    Sivarasan, Ganesan / Manikandan, Velu / Periyasamy, Selvendiran / AlSalhi, Mohamad S / Devanesan, Sandhanasamy / Murphin Kumar, Paskalis Sahaya / Pasupuleti, Raghavendra Rao / Liu, Xinghui / Lo, Huang-Mu

    Environmental research

    2023  Volume 227, Page(s) 115723

    Abstract: Three-dimensional multi-porous Iron Oxide/carbon ( ... ...

    Abstract Three-dimensional multi-porous Iron Oxide/carbon (Fe
    MeSH term(s) Iron/chemistry ; Acetaminophen ; Adsorption ; Water Pollutants, Chemical/analysis ; Carbon ; Kinetics ; Water Purification/methods
    Chemical Substances Iron (E1UOL152H7) ; Acetaminophen (362O9ITL9D) ; Water Pollutants, Chemical ; Carbon (7440-44-0)
    Language English
    Publishing date 2023-03-30
    Publishing country Netherlands
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 205699-9
    ISSN 1096-0953 ; 0013-9351
    ISSN (online) 1096-0953
    ISSN 0013-9351
    DOI 10.1016/j.envres.2023.115723
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: A phosphonium ionic liquid conjugated magnetic graphitic carbon nitride nanocomposite: an effective sample pretreatment tool for selenium separation and determination.

    Arputharaj, Emmanuvel / Singh, Shivangi / Pasupuleti, Raghavendra Rao / Kuo, Chun-An / Ya, Wei-Jyun / Huang, Yu-Hui / Wu, You-Rong / Chao, Yu-Ying / Huang, Yeou-Lih

    Analytical methods : advancing methods and applications

    2023  Volume 15, Issue 47, Page(s) 6531–6540

    Abstract: We established an innovative and easy-to-use methodology for selenium (Se) extraction and determination from real water samples utilizing a magnetic nanocomposite adsorbent (MNC-SPE) aided by an inductively coupled plasma mass spectrometry (ICP-MS) ... ...

    Abstract We established an innovative and easy-to-use methodology for selenium (Se) extraction and determination from real water samples utilizing a magnetic nanocomposite adsorbent (MNC-SPE) aided by an inductively coupled plasma mass spectrometry (ICP-MS) approach. The MNC-SPE adsorbent was fabricated by hybridizing Fe
    Language English
    Publishing date 2023-12-07
    Publishing country England
    Document type Journal Article
    ZDB-ID 2515210-5
    ISSN 1759-9679 ; 1759-9660
    ISSN (online) 1759-9679
    ISSN 1759-9660
    DOI 10.1039/d3ay01312j
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article: Rapid determination of remdesivir (SARS-CoV-2 drug) in human plasma for therapeutic drug monitoring in COVID-19-Patients.

    Pasupuleti, Raghavendra Rao / Tsai, Pei-Chien / Ponnusamy, Vinoth Kumar / Pugazhendhi, Arivalagan

    Process biochemistry (Barking, London, England)

    2020  Volume 102, Page(s) 150–156

    Abstract: To tackle the harmful consequences of the widespread COVID-19 pandemic, a broad-spectrum anti-viral drug remdesivir (RDV) has gained the utmost attention recently due to its promising application in treating COVID-19 patients. However, a fast and ... ...

    Abstract To tackle the harmful consequences of the widespread COVID-19 pandemic, a broad-spectrum anti-viral drug remdesivir (RDV) has gained the utmost attention recently due to its promising application in treating COVID-19 patients. However, a fast and sensitive analytical methodology is important to monitor RDV drug profile in human plasma for pharmacokinetics (PK) and therapeutic drug monitoring (TDM). In this study, we demonstrate an improved vortex-assisted salt-induced liquid-liquid microextraction (VA-SI-LLME) technique coupled with UHPLC-PDA and UHPLC-MS/MS for rapid determination of RDV in human plasma. This technique involves simple one-step protein precipitation with hydrochloric acid and subsequent extraction with acetonitrile for analysis. Under the optimal VA-SI-LLME conditions (500 μL of acetonitrile with 2.5 g ammonium sulfate under 2 min vortex extraction), method validation results indicated an excellent correlation coefficient of 0.9969 for UHPLC-PDA (monitored at 254 nm) and 0.9990 for UHPLC-MS/MS (monitored at electrospray ionization with + ion mode transitions of
    Language English
    Publishing date 2020-12-25
    Publishing country England
    Document type Journal Article
    ISSN 1359-5113
    ISSN 1359-5113
    DOI 10.1016/j.procbio.2020.12.014
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Iron-engineered mesoporous biocarbon composite and its adsorption, activation, and regeneration approach for removal of paracetamol in water

    Sivarasan, Ganesan / Manikandan, Velu / Periyasamy, Selvendiran / AlSalhi, Mohamad S. / Devanesan, Sandhanasamy / Murphin Kumar, Paskalis Sahaya / Pasupuleti, Raghavendra rao / Liu, Xinghui / Lo, Huang-Mu

    Environmental Research. 2023 June, v. 227 p.115723-

    2023  

    Abstract: Three-dimensional multi-porous Iron Oxide/carbon (Fe₂O₃/C) composites derived from tamarind shell biomass were synthesized by a single-step co-pyrolysis technique and utilized for Paracetamol (PAC) dismissal in the combined adsorption, and advanced ... ...

    Abstract Three-dimensional multi-porous Iron Oxide/carbon (Fe₂O₃/C) composites derived from tamarind shell biomass were synthesized by a single-step co-pyrolysis technique and utilized for Paracetamol (PAC) dismissal in the combined adsorption, and advanced oxidation such as electrochemical regeneration techniques. The Fe₂O₃/C composites were prepared by different pyrolysis temperatures, and named as TS750 (without Fe₂O₃at 750 °C), MTS450 BCs (Low-450 °C), MTS600 BCs (Moderate-600 °C) and MTS750 BCs (high-750 °C), respectively. As-prepared Fe₂O₃/C composite was characterized by FE-SEM, XRD, BET, and XPS analysis. The specific surface area and the spatial interaction between the interlayers of Fe₂O₃ and C were significantly improved by increasing the pyrolysis temperatures from 450 to 750 °C, which improved the adsorption capacity of Fe₂O₃/C composites in terms of higher rate constants and chemisorption kinetics. The Pseudo-second-order kinetics model fitted in the adsorption test results of Fe₂O₃/C composites with the highest correlation co-efficiency. The Langmuir-isotherms model fitted in the adsorption test of the TS750 and MTS450 BCs. The Freundlich isotherms model is more fit with MTS600 and MTS750 BCs. Based on the isotherm results, the MTS750 BCs achieved 46.9 mg/g of maximum PAC adsorption capacity. The optimized MTS750 composites could be completely recovered by using an advanced electrochemical oxidation regeneration approach within 180 min. Also, with the adsorption and recovery process, the TOC removal rate improved to ∼79.4%. After the 6th cycle electrochemical oxidation process, the obtained results of the re-adsorption test showed the stabile adsorption activity of the sorbent material. The data outcomes herein propose that this type of combined adsorption and electrochemical approach will be useful in commercial water treatment plants.
    Keywords acetaminophen ; adsorption ; biomass ; carbon ; electrochemistry ; iron oxides ; models ; oxidation ; porous media ; pyrolysis ; research ; sorbents ; sorption isotherms ; surface area ; tamarinds ; water treatment ; Fe2O3/C composite ; Adsorption and electrochemical regeneration ; Graphite sheet electrode ; Paracetamol removal ; Tamarind shell biomass
    Language English
    Dates of publication 2023-06
    Publishing place Elsevier Inc.
    Document type Article ; Online
    ZDB-ID 205699-9
    ISSN 1096-0953 ; 0013-9351
    ISSN (online) 1096-0953
    ISSN 0013-9351
    DOI 10.1016/j.envres.2023.115723
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  10. Article: LC-MS/MS measurement of alkaloids in alkaline extracts of Areca nut preparations and their physiological effects

    Osborne, Peter G. / Pasupuleti, Raghavendra Rao / Wu, Ming-Tsang / Lee, Chien-Hung / Ponnusamy, Vinoth Kumar

    Process biochemistry. 2022 July, v. 118

    2022  

    Abstract: Betel quid (BQ) containing Piper betle leaf (L), green unripe Areca catechu nut (AN) and slaked lime (Ca(OH)₂) is an addictive carcinogenic stimulant, with no pharmacotherapy, chewed by millions of people in Asia. We measured the effect of the ... ...

    Abstract Betel quid (BQ) containing Piper betle leaf (L), green unripe Areca catechu nut (AN) and slaked lime (Ca(OH)₂) is an addictive carcinogenic stimulant, with no pharmacotherapy, chewed by millions of people in Asia. We measured the effect of the constituents of slaked lime, NaOH and Ca(OH)₂, on the levels of endogenous alkaloids in aqueous extracts of AN alone and L+AN (LAN) using UHPLC-MS/MS. Alkaloid levels in AN and LAN extracts were arecoline> >guvacoline>arecaidine>guvacine. In vitro hydrolyzation of extracts of AN and LAN by NaOH or Ca(OH)₂, as occurs in vivo when BQ is chewed, dose-dependently decreased levels of muscarinic esters, arecoline (maximum 65%↓) and guvacoline (maximum 69%↓), and increased carboxylic acid GABA uptake inhibitors, arecaidine (maximum 275%↑) and guvacine (maximum 18%↑). In five volunteers, chewing BQ but not LAN, increased heart rate (maximum 19b/min), forehead temperature (maximum 1 °C), facial flushing and sweating, all symptoms of BQ stimulation. Hydrolysis of compounds in LAN is necessary to induce stimulant effects. Levels of arecoline, considered to mediate stimulant and addictive properties of BQ, negatively correlate with the physiological stimulant effects while levels of GABA uptake inhibitors positively correlate. Unripe, green AN warrants investigation as replacement therapy in the treatment of BQ substance use disorder.
    Keywords Areca catechu ; Piper betle ; arecoline ; betel ; betel nut ; calcium hydroxide ; carcinogenicity ; drug therapy ; heart rate ; hydrolysis ; leaves ; temperature ; Asia
    Language English
    Dates of publication 2022-07
    Size p. 65-73.
    Publishing place Elsevier Ltd
    Document type Article
    ISSN 1359-5113
    DOI 10.1016/j.procbio.2022.04.018
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

To top