Determination of Plant Extract Yield
The yield of evaporated dried extract based on
dry weight basis was calculated from the following equation:
Yield (%) = (W1 × 100) / W2
where W1 was the weight of extract after evaporation of methanol and W2 was the dry weight of the fresh plant sample.
Qualitative Phytochemical Analysis of Methanol Extract of B. alba
Qualitative phytochemical analysis of methanol extract of B. alba leaves was carried out using standard procedures to identify the presence of flavonoids, carbohydrates, steroids, tannins and saponins in the extract (Malpani et al., 2011; Kumar and Bhardwaj, 2012; Ray et al., 2013).