Phytochemical characterization, antimicrobial and antioxidant activities of Terminalia catappa methanol and aqueous extracts

Table 4 Table showing % relative scavenging activity (RSA) and IC₅₀ values of L-Ascorbic acid, the T. catappa L. methanol, and aqueous extracts

% Relative scavenging activity (RSA)
Concentration (μg/ml)	L-Ascorbic acid	*T. catappa* L. methanol	*T. catappa* aqueous extract
Concentration (μg/ml)	Mean ± SD	Mean ± SD	Mean ± SD
1000	91.97 ± 0.11^Aa	82.58 ± 0.17^Ab	81.70 ± 0.39^Ac
200	91.35 ± 0.39^Aa	81.85 ± 0.68^Ab	80.41 ± 0.75^Ab
40	90.01 ± 0.34^Ba	80.96 ± 0.39^Bb	75.17 ± 0.37^Bc
8	44.33 ± 0.12^Ca	38.84 ± 0.70^Cb	39.43 ± 0.60^Cb
1.6	13.24 ± 0.31^Da	7.36 ± 0.24^Db	14.28 ± 0.28^Dc
0.32	10.81 ± 0.32^E	3.42 ± 0.34^E	7.42 ± 0.39^E
0.0	0.00 ± 0	0.00 ± 0	0.00 ± 0
IC₅₀	8.723	13.04	13.42

%RSA values are expressed as x̄ ± SD, n = 3. Values with the same uppercase (A-E) superscript letter along the columns and lowercase (a-d) superscript letter across the rows are not significantly different (P > 0.05; one-way ANOVA followed by Tukey’s paired test)

ISSN: 2662-7671