Evidence-Based Complementary and Alternative Medicine

Research Article

Effects of Alcoholic Extracts of Bangladeshi Mangrove Acanthus ilicifolius Linn. (Acanthaceae) Leaf and Stem on Atherogenic Model of Wistar Albino Rats

Table 5

IC₅₀ values and regression equations of DPPH assay for different test extracts.


Sample	IC₅₀ (µg/mL)	Regression equation

AILM	5.89	y = 22.141x + 32.92	0.956
AILE	6.59	y = 24.302x + 30.098	0.948
AISE	7.10	y = 22.27x + 31.051	0.931
AISM	14.80	y = 27.921x + 17.295	0.963
Ascorbic acid	3.03	y = 22.954x + 38.93	0.932

AILE = ethanolic extract of A. ilicifolius (leaf); AILM = methanolic extract of A. ilicifolius (leaf); AISE = ethanolic extract of A. ilicifolius (stem); AISM = methanolic extract of A. ilicifolius (stem). IC₅₀ = inhibitory concentration 50, y = dependent variable (% inhibition), i.e., 50%, x = independent variable (logarithmic concentration), = coefficient of determination representing how close the data (dependent and independent variables) are to the fitted regression line; a value close to 100% (1.00) is recognized as best fitted line (linear relationship between dependent and independent variables).