Articles with "hplc pda" as a keyword



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Isolation and structural characterization of a novel sibutramine analogue, chlorosipentramine, in a slimming dietary supplement, by using HPLC-PDA, LC-Q-TOF/MS, FT-IR, and NMR.

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Published in 2018 at "Forensic science international"

DOI: 10.1016/j.forsciint.2018.03.021

Abstract: A novel sibutramine analogue was detected in a slimming formula by high performance liquid chromatography with a photo diode detector array (HPLC-PDA). The unknown compound exhibited an ultraviolet (UV) spectrum that was similar to that… read more here.

Keywords: sibutramine analogue; hplc pda; novel sibutramine; analogue ... See more keywords
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Simultaneous quantification of thirty polyphenols in blackthorn flowers and dry extracts prepared thereof: HPLC-PDA method development and validation for quality control.

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Published in 2020 at "Journal of pharmaceutical and biomedical analysis"

DOI: 10.1016/j.jpba.2020.113121

Abstract: The paper presents development and validation of a RP-HPLC-PDA method for quantification of 30 phenolic constituents of the blackthorn (Prunus spinosa L.) flower, a traditional European herbal medicine with a unique and complex composition. The… read more here.

Keywords: development validation; validation; method; quantification ... See more keywords
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Advancing HPLC-PDA-HRMS-SPE-NMR Analysis of Coumarins in Coleonema album by Use of Orthogonal Reversed-Phase C18 and Pentafluorophenyl Separations.

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Published in 2017 at "Journal of natural products"

DOI: 10.1021/acs.jnatprod.6b01020

Abstract: A hyphenated procedure involving high-performance liquid chromatography, photodiode array detection, high-resolution mass spectrometry, solid-phase extraction, and nuclear magnetic resonance spectroscopy, i.e., HPLC-PDA-HRMS-SPE-NMR, has proven an effective technique for the identification of compounds in complex matrices.… read more here.

Keywords: phase; pda hrms; hrms spe; hplc pda ... See more keywords
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Gentianopsis metabolites and bioactivity: HPLC-PDA-ESI-tQ-MS/MS profiles, HPLC-UV quantification of Gentianopsis komarovii and Gentianopsis stricta, and choleretic potential.

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Published in 2022 at "Natural product research"

DOI: 10.1080/14786419.2022.2107640

Abstract: Gentianopsis is a small gentianaceous genus with a known ethnopharmacological focus as hepatoprotectors containing two underestimated species that are scientifically unexplored: Gentianopsis komarovii (Grossh.) Toyok., which is typical of the Far East, and Gentianopsis stricta… read more here.

Keywords: stricta; gentianopsis komarovii; gentianopsis; hplc pda ... See more keywords
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Phenolic Profile by HPLC-PDA-MS of Greek Chamomile Populations and Commercial Varieties and Their Antioxidant Activity

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Published in 2021 at "Foods"

DOI: 10.3390/foods10102345

Abstract: The phenolic profile of Greek chamomile populations was investigated by HPLC-PDA-MS. For comparison, three commercial varieties (Banatska, Lutea and Goral) cultivated under the same conditions were included in the study. All samples exhibited similar qualitative… read more here.

Keywords: chamomile populations; phenolic profile; chamomile; commercial varieties ... See more keywords
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NMR, RP-HPLC-PDA-ESI-MSn, and RP-HPLC-FD Characterization of Green and Oolong Teas (Camellia sinensis L.)

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Published in 2021 at "Molecules"

DOI: 10.3390/molecules26175125

Abstract: Untargeted (NMR) and targeted (RP-HPLC-PDA-ESI-MSn, RP-HPLC-FD) analytical methodologies were used to determine the bioactive components of 19 tea samples, characterized by different production processes (common tea and GABA tea), degrees of fermentation (green and oolong… read more here.

Keywords: hplc; oolong teas; green oolong; gaba ... See more keywords
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Metabolic Profile of Agropyron repens (L.) P. Beauv. Rhizome Herbal Tea by HPLC-PDA-ESI-MS/MS Analysis

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Published in 2022 at "Molecules"

DOI: 10.3390/molecules27154962

Abstract: Agropyron repens (L.) P. Beauv. (couch grass) is a world-wide infesting rhizomatous plant with pharmacological applications. Chemical research is focused on its allelopathic and anti-inflammatory components, which are mainly present in the essential oil. Conversely,… read more here.

Keywords: herbal tea; agropyron repens; hplc pda; pda esi ... See more keywords
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HPLC-PDA/ESI-MS Analysis of Phenolic Compounds and Bioactivities of the Ethanolic Extract from Flowers of Moroccan Anacyclus clavatus

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Published in 2022 at "Plants"

DOI: 10.3390/plants11243423

Abstract: In this work, polyphenols were extracted from Anacylus clavatus flowers using a hydroethanolic solvent, and the obtained extract was studied for its total phenol and flavonoid contents and evaluated for its antioxidant and antibacterial capacities.… read more here.

Keywords: analysis phenolic; hplc pda; pda esi; clavatus ... See more keywords
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Identification and Quantification of Polyphenolic Secondary Metabolites in Stem Bark of Ficus religiosa (Moraceae) Using UPLC-HRMS and RP-HPLC-PDA

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Published in 2023 at "Separations"

DOI: 10.3390/separations10060338

Abstract: F. religiosa bark has been extensively used in traditional medicinal systems, such as Ayurveda, for its health benefits. The aim of this study was to investigate the secondary metabolites (phenolics and flavonoids) of the hydroalcoholic… read more here.

Keywords: religiosa; uplc hrms; religiosa bark; bark ... See more keywords