THE DEVELOPMENT AND VALIDATION OF ANALYTICAL METHOD FOR EVALUATING GALLIC ACID IN ETHYL ACETATE FRACTION (EAF) OF SNEDDS FORMULATION: QUANTITATIVE ANALYSIS WITH IN VITRO ASSAY

PRATIWI APRIDAMAYANTI; LIZA PRATIWI; RAFIKA SARI

doi:10.22159/ijap.2024v16i2.49830

Authors

PRATIWI APRIDAMAYANTI Departement of Chemical Pharmacy, Medicine Faculty, Tanjungpura University, Pontianak City, West Borneo, Indonesia https://orcid.org/0000-0001-5620-9813
LIZA PRATIWI Departement of Technology Pharmacy, Medicine Faculty, Tanjungpura University, Pontianak City, West Borneo, Indonesia https://orcid.org/0000-0003-3359-2025
RAFIKA SARI Departement of Biology Pharmacy, Medicine Faculty, Tanjungpura University, Pontianak City, West Borneo, Indonesia

DOI:

https://doi.org/10.22159/ijap.2024v16i2.49830

Keywords:

Quantitative analysis ethyl acetate fraction (EAF) of Melastoma malabathricum leaves in combination with gentamicin in SNEDDS formulation, Development and Validation, In vitro assay

Abstract

Objective: This study aimed to develop a simple, accurate, precise, sensitive, robust, and stable analytical method for the evaluation of gallic acid in Self-Nanoemulsifying Drug Delivery System (SNEDDS) incorporating ethyl acetate fraction (EAF) of Melastoma malabathricum leaves in combination with Gentamicin.

Methods: Validation process followed ICH guidelines and applied a reverse phase HPLC method with a mobile phase of acetonitrile-phosphoric buffer at pH 3.03 (20:80 v/v). The stationary phase consisted of a VP-ODS shim-pack C-18 column (250x4.6 mm) with a flow rate of 0.2 ml/min and detection at 263 nm using an Ultraviolet detector. Additionally, antioxidant activity was assessed through the DPPH and FRAP methods, and SPF value was determined with a UV/Vis spectrophotometer in the 290-390 nm wavelength range.

Results: The results showed that the retention time of quercetin was 16.648 min with a tailing factor of 1.623. The regression equation (y=224689x-989000) had a concentration range of 10-55 µg/ml and a correlation value of 0.9920. Limit of Detection (LOD) and Limit of Quantification (LOQ) were found to be 2.394±0.086 and 7.254±0.260 µg/ml, respectively. Method accuracy, determined by recovery values at concentrations of 50%, 100%, and 150%, ranged from 91.18% to 109.49%. Repeatability inter-day variations were expressed as %RSD values of 1.027-1.963% for AUC and 0.150-0.145 for RT. Moreover, the applied method showed stability within a temperature range of 14 °C–35 °C. Analysis showed gallic acid content of 1.773±0.049 mg/g in SNEDDS EAF formulation. Antioxidant activity measured through the DPPH and FRAP methods yielded IC₅₀ values of 4.167±0.552 µg/ml and 20.253±0.619 µg/ml, respectively, while SPF value at SNEDDS concentration of 150 µg/ml was 36.993±0.183.

Conclusion: This study successfully developed a precise, accurate, specific, and stable method for quantifying gallic acid levels in SNEDDS EAF of Melastoma malabathricum leaves in combination with Gentamicin. Therefore, SNEDDS EAF formulation exhibited an effective wound-healing potential, supported by a robust quality control process.

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