Development and Validation of UV-Visible Method to Determine Gallic Acid in Hydroalcoholic Extract of Erythrina fusca Leaves (original) (raw)

2020, International Journal of Research in Pharmaceutical Sciences

Gallic acid (GA) inhibitory potential against oxidative stress and associated diseases, creates the importance for GA standardization in plant medicines. The present investigation was intended to quantify the amount of GA in Erythrina fusca leaves hydro-alcoholic extract (EFLHE) by the development of UV/Visible-spectrophotometric method and its validation. The study involved of EFLHE preparation via ethanolic maceration, followed by estimation of total phenolic content (TPC) or GA through the development of Folin-Ciocalteu reagent-based UV/Visible-spectrometric method and standard GA calibration curve. Developed method to estimate GA was validated using linearity, accuracy, precision, repeatability and ruggedness studies. The TPC analysis of EFLHE in concentration of 0.5, 1.0, 2.5, 3.0, 5.0, 10.0 µg/ml exhibited amount of GA as 98.0±8.71, 117.0±1.73, 217.1±3.45, 276.0±0.80, 289.1±1.11 and 295.2±1.19 GA equivalent (mg/g, dry weight) respectively. The linearity study revealed the rang...