Results 31 to 40 of about 54,757 (260)

CHEMICAL PROFILES OF HONEYS ORIGINATING FROM DIFFERENT FLORAL SOURCES AND GEOGRAPHIC LOCATIONS EXAMINED BY A COMBINATION OF THREE EXTRACTION AND ANALYSIS TECHNIQUES

open access: yesJournal of Fundamental and Applied Sciences, 2015
The chemical profiles of Tasmanian Leatherwood and Manuka honeys from Tasmania and New Zealand have been compared by a combination of GC-MS analysis of volatiles and semi-volatiles, RP-HPLC-DAD analysis of phenolics and flavonoids and HPLC-DAD analysis ...
D. M. Meloncelli   +2 more
doaj   +3 more sources

Screening of Satureja subspicata Vis. honey by HPLC-DAD, GC-FID/MS and UV/VIS: prephenate derivatives as biomarkers [PDF]

open access: yes, 2016
The samples of Satureja subspicata Vis. honey were confirmed to be unifloral by melissopalynological analysis with the characteristic pollen share from 36% to 71%. Bioprospecting of the samples was performed by HPLC-DAD, GC-FID/MS, and UV/VIS. Prephenate
JERKOVIC, IGOR   +5 more
core   +5 more sources

A Decomposition Model for HPLC-DAD Data Set and Its Solution by Particle Swarm Optimization

open access: yesApplied Computational Intelligence and Soft Computing, 2014
This paper proposes a separation method, based on the model of Generalized Reference Curve Measurement and the algorithm of Particle Swarm Optimization (GRCM-PSO), for the High Performance Liquid Chromatography with Diode Array Detection (HPLC-DAD) data ...
Lizhi Cui   +5 more
doaj   +1 more source

Phlorotannin Extracts from Fucales Characterized by HPLC-DAD-ESI-MSn: Approaches to Hyaluronidase Inhibitory Capacity and Antioxidant Properties [PDF]

open access: yes, 2019
Purified phlorotannin extracts from four brown seaweeds (Cystoseira nodicaulis (Withering) M. Roberts, Cystoseira tamariscifolia (Hudson) Papenfuss, Cystoseira usneoides (Linnaeus) M.
Andrade, Paula   +6 more
core   +1 more source

HPLC-DAD determination of imidacloprid in onion

open access: yesPesticidi, 2003
Imidacloprid is an insecticide most commonly used on vegetables, potato sugar beet, fruit, cereal, maize and rice. Imidacloprid residue has been determined in spiked onion and in onion samples. Sample preparation consisted of dichlormethane extraction of imidacloprid from onion, followed by purification of the obtained extract on a LC-Florisil ...
Aljosa Mandic   +2 more
openaire   +2 more sources

A Comparative Study of Newly Developed HPLC-DAD and UHPLC-UV Assays for the Determination of Posaconazole in Bulk Powder and Suspension Dosage Form

open access: yesJournal of Analytical Methods in Chemistry, 2014
Objective. To develop and compare HPLC-DAD and UHPLC-UV assays for the quantitation of posaconazole in bulk powder and suspension dosage form. Methods. Posaconazole linearity range was 5–50 μg/mL for both assays. For HPLC-DAD assay, samples were injected
Dalia A. Hamdy, Tarek S. Belal
doaj   +1 more source

Antimicrobial activities of secondary metabolites of endophytic fungi isolated from Catharanthus roseus [PDF]

open access: yes, 2017
Introduction: Recently, several endophytes have been shown to possess the potentials to synthesize novel bioactive compounds that have found use for drug discovery. We isolated endophytic fungi associated with Catharanthus roseus collected from the river
Abba, Chika C.   +6 more
core   +2 more sources

Determination of cellular vitamin C dynamics by HPLC-DAD

open access: yesThe Analyst, 2019
A redox-sensitive inter-conversion between ascorbic acid (ASC) and its oxidized form dehydroascorbic acid (DHA) in the intracellular environment has been of exceptional interest to recent metabolomics and pharmaceutical research.
Taiki Miyazawa   +2 more
openaire   +3 more sources

Detection of antibacterial residues in milk by HPLC-DAD and microbial inhibitor tests

open access: yesCzech Journal of Food Sciences, 2020
The objective of this study was to assess the detection sensitivity of four commercial microbial inhibition assays (MIAs) in comparison with the results by High Pressure Liquid Chromatography with Diode Array Detection (HPLC-DAD) for residues of three ...
Sofia Christoforidou   +5 more
doaj   +1 more source

Multivariate analysis of sensory data of Vitis vinifera L. cv. Graciano during ripening. Correlation with the phenolic composition of the grape skins [PDF]

open access: yes, 2011
The aim of this work was to evaluate sensory changes in grape skins during ripening and to obtain a correlation with their phenolic composition.
Escribano Bailón, María Teresa   +3 more
core   +3 more sources

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