Table 3. Total flavonoid content of S. ferruginea leaves, stems, and flowers using different solvents expressed in mg catechin/ g extract.

		Total flavonoids
		Extractants
Plant part	Water	Methanol	Ethyl acetate	Hexane
Stem	157.17 ± 5.81ax	163.41 ± 4.62ax	52.85 ± 3.16bx	24.64 ± 2.51cx*
Leaf	86.59 ± 7.07ay	70.67 ± 2.49by	38.92 ± 7.13cy	18.64 ± 3.95dx
Flower	59.48 ± 4.78az	107.60 ± 7.58bz	28.00 ± 3.98cz	16.23 ± 1.04dx*

All analysis were performed in triplicate and expressed as means ± SD. For the same extract with different part of plant, means in the same column with different letters (x-z) were significantly different (p < 0.05, two-way ANOVA). For different extracts with the same part of plant, means in the same row with different letters (a-d) were significantly different (p < 0.05, two-way ANOVA). Same superscripts with asterisk imply statistical significance (P < 0.05).