Simultaneous Assay of ρ-Coumaric Acid and Coumarin Co-encapsulated in Lipid-core Nanocapsules: Validation of an LC Analytical Method

Author(s): Ticiane Krapf Boschetti, Edilene Gadelha de Oliveira, Lucas Almeida Rigo, Karine Coradini, Ruy Carlos Ruver Beck*.

Journal Name: Current Pharmaceutical Analysis

Volume 15 , Issue 2 , 2019

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Abstract:

Background: Lipid-Core Nanocapsules (LNC) containing co-encapsulated -coumaric acid and coumarin are under development. However, there is a lack of analytical methods to assay these bioactives in nanoformulations.

Objective: The aim of this study was to validate an LC analytical method for the simultaneous determination of ρ-coumaric acid and coumarin in lipid-core nanocapsules.

Methods: The mobile phase was composed of acetonitrile:water (40:60 v/v) adjusted to pH 4 and a C- 18 reversed-phase column was used. Both bioactives were detected at 275 nm. Specificity, linearity, range, precision and accuracy of the method were assessed, according to the official requirements.

Results: Nanocapsules containing ρ-coumaric and coumarin had monomodal particle size distribution, spherical-shape and Z-average size of 207 ± 2 nm. LC method was specific, linear (5 to 30 µg.mL-1), precise (RSD < 5%) and accurate (97 - 103%). It was applied to assay the content and encapsulation efficiency of the bioactive substances in LNC, which were close to 0.5 mg.mL-1 and 72%, respectively.

Conclusion: The proposed analytical method is reliable for the simultaneous assay of ρ-coumaric acid and coumarin in nanocapsules and can be further used in their development.

Keywords: Bioactives, chromatography, ρ-coumaric acid, coumarin, nanocapsules, validation.

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Article Details

VOLUME: 15
ISSUE: 2
Year: 2019
Page: [145 - 151]
Pages: 7
DOI: 10.2174/1573412913666171027163451
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