LC-ESI
Comparative study of Mentha species growing wild in Egypt: LC-ESI-MS analysis and chemosystematic significance
... Mentha longifolia (L.) Huds. and Mentha pulegium L. are growing wild in Egyptian flora, they have many biological activities and commonly used as traditional herbal medicines. The aqueous methanolic extracts of the two ...
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Isolation and identification of alkaloids and anthocyanins from flower and bulb of Lycoris radiata using HPLC and LC ESI MS
... The MS spectral data by comparing with data of a pre- vious report [5,6] led to identification of eleven known alkaloids (lycoricidine (peak no. 4), hipppeastrine (6), O-demethyllycoramine (7), lycoricidinol (8), ...
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LC-ESI-MS profile, antioxidant activity and cytotoxic screening of Oligomeris linifolia (Vahl) Macbr. (Resedaceae)
... In the present study, the LC-ESI-MS analysis was investigated for the n-butanol, methanol and water fractions of O. linifolia using negative ion mode technique due to its high sensitivity in the analysis of ...
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Analysis of imatinib in bone marrow and plasma samples of chronic myeloid leukaemia patients using solid phase extraction LC-ESI-MS
... a P2000 pump, AS1000 autosampler with 20 µl fixed injection loop and UV2000 detector (ThermoSeparations, Hemel Hempstead, Herts, UK). Chromatographic separation was conducted at ambient temperature using an ACE ® 3 µm C8 ...
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Combined Use of NMR, LC ESI MS and Antifungal Tests for Rapid Detection of Bioactive Lipopeptides Produced by Bacillus
... The science and technology interact with the art in several ways. Biotechnological coupled with analytical approaches can play an important role in protecting and preserving cultural heritage for future generations. Many ...
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Flavonoid investigation, LC–ESI MS profile and cytotoxic activity of Raphanus raphanistrum L (Brassicaceae)
... The LC-ESI-MS technique was also performed and revealed the tentative identification of kaempferol and quercetin nuclei with high grade of glycosylation for the first ...
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LC-ESI-MS analysis, antitumor and antioxidant activities of methanolic extract of Egyptian Allium kurrat
... assay. LC-ESI-MS analysis was carried out for the most active ...The LC-ESI-MS analysis identified a mixture of phenolic compounds (flavonoid glycosides and phenolic ...
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Development and Validation of a LC-ESI-MS/MS Based Bioanalytical Method for Dapagliflozin and Saxagliptin in Human Plasma
... sensitive LC-ESI –MS/MS method for the simultaneous estimation of Dapagliflozin and saxagliptin in human K 2 EDTA plasma by Liquid –liquid Extraction method (LLE) using deutereated dapagliflozin (DGd2) and ...
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Phytochemical Study of Nothapodytes foetida by LC-ESI-MS
... by LC-ESI-MS. Under the LC-MS conditions mentioned in experimental section, purified CPT was eluted at retention time (Rt) of ...of ESI-MS, the same peak exhibited a molecular adduct at m/z ...
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Simultaneous determination of rhamnose, xylitol, arabitol, fructose, glucose, inositol, sucrose, maltose in jujube (Zizyphus jujube Mill.) extract: comparison of HPLC–ELSD, LC–ESI–MS/MS and GC–MS
... Background: Jujube extract is commonly used as a food additive and flavoring. The sensory properties of the extract, especially sweetness, are a critical factor determining the product quality and therefore affecting ...
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Simultaneous Determination of Ten Endocrine Hormone Disrupters in Water Using SPE/LC (ESI)MS MS
... Between May and June 2008, 43 samples were collected from several sampling points of the EPAL water supply system and also from the main raw water sources of this company (Tagus River, Castelo de Bode reservoir, and ...
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Identification and characterization of in vivo, in vitro and reactive metabolites of vandetanib using LC–ESI–MS/MS
... Vandetanib (Caprelsa tablets, VNT) is an orally inhibitor of vascular endothelial growth factor receptor 2. The current research reports the characterization and identification of in vitro, in vivo and reactive ...
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Measurement of methionine level with the LC-ESI-MS/MS method in schizophrenic patients
... Case selection. Schizophrenia patients and healthy controls were included in this study, with the aim of evaluating the LC-ESI-MS/MS method with regard to the measurement of plasma methionine levels. In ...
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Fast LC-ESI-MS/MS analysis and influence of sampling conditions for gut metabolites in plasma and serum
... the LC-MS analysis, the most important MS variable was the collision energy, which was optimized to reach the highest sen- ...The LC gradient started with 95% water to maximize the retention of the matrix ...
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A validated LC-ESI-MS/MS method for the quantification of Selegiline HCl in bulk and pharmaceutical formulation
... novel LC-MS/MS method was developed and validated which can be applied for the quantification of Selegiline HCl in a pharmaceutical formulation which offers excellent accuracy and significant advantages regarding ...
5
Integrated parylene LC-ESI on a chip
... A typical nano-LC binary solvent gradient has a total flow rate of 100 nL/min and a duration of 10s minutes to several hours. A typical sample injection also requires a sample volume around 1 µL. Besides the ...
147
Proteome analysis of excretory-secretory proteins of Entamoeba histolytica HM1:IMSS via LC–ESI–MS/MS and LC–MALDI–TOF/TOF
... Liquid chromatography and MALDI mass spectrometry The separation of peptides prior to MALDI–TOF/TOF was performed using eksigent nanoLC ultra 1D plus (Eksigent,Germany) linked to an automated spotter (Eksigent, Germany). ...
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PICOGRAM LEVEL QUANTIFICATION OF VARENICLINE IN HUMAN PLASMA SAMPLES BY LC–ESI MS/MS
... two LC-MS/MS methods have been published for the quantification of varenicline in human plasma, the first one was done by which has then been applied for the study of varenicline ...
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In Vitro Metabolism Study of Brevetoxins by LC-ESI-MS
... We postulate that brevetxin-2-M2 is formed by metabolic reduction of the tail (addition of two hydrogen atoms to the aldehyde), thereby forming brevetoxin-3. To confirm the postulation that the peak at 7.8 min ...
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Estimation of Ribociclib in Human Plasma Samples by LC ESI MS/MS
... A validated Ribociclib bioanalytical method was developed by HPLC-ESI-MS/MS using stationary phase Zorbax SB-C18, 4.6 × 75 mm, 3.5 μm, 80 Å column and mobile phase was used 5mM ammonium formate: acetonitirle ...
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