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Journal of Chromatographic Science
Article . 2015 . Peer-reviewed
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Validation of HPLC–UV Assay of Caffeic Acid in Emulsions

Authors: Spagnol, Caroline Magnani; Isaac, Vera Lucia Borges; Corrêa, Marcos Antonio; Salgado, Hérida Regina Nunes;

Validation of HPLC–UV Assay of Caffeic Acid in Emulsions

Abstract

An accurate, sensitive, precise and rapid reversed-phase high-performance liquid chromatographic method was successfully developed and validated for the determination of caffeic acid (CA) in emulsions. The best separation was achieved on a 250 × 4.6 mm, 5.0 µm particle size RP18 XDB Waters column using ethanol and purified water (40:60 v/v) adjusted to pH 2.5 with acetic acid as the mobile phase at a flow rate of 0.7 mL/min. Ultraviolet detection was performed at 325 nm at ambient column temperature (25°C). The method was linear over the concentration range of 10-60 µg/mL (r(2) = 0.9999) with limits of detection and quantification of 1.44 and 4.38 µg/mL, respectively. CA was subjected to oxidation, acid, base and neutral degradation, as well as photolysis and heat as stress conditions. There were no interfering peaks at or near the retention time of CA. The method was applied to the determination of CA in standard and pharmaceutical products with excellent recoveries. The method is applicable in the quality control of CA.

Country
Brazil
Keywords

Quality Control, Chromatography, Reverse-Phase, Photolysis, Ethanol, Plant Extracts, Reproducibility of Results, Water, Hydrogen-Ion Concentration, Reference Standards, 540, Caffeic Acids, Drug Stability, Limit of Detection, Solvents, Humans, Emulsions, Spectrophotometry, Ultraviolet, Oxidation-Reduction, Chromatography, High Pressure Liquid, Acetic Acid, Tablets

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    popularity
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    influence
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
17
Top 10%
Top 10%
Top 10%
bronze