Research Article
In Vitro Antimicrobial Bioassays, DPPH Radical Scavenging Activity, and FTIR Spectroscopy Analysis of Heliotropium bacciferum
Table 11
Growth Inhibition on bioautographic TLC plates by Heliotropium bacciferum leaves, flowers, and stem extracts against different fungal strains.
| Plant parts | Fungal species | Solvent system | Extracts | values | Inhibition | Active bands |
| Leaves | Aspergillus niger | EMW | Methanol | 0.62 | + | 1 | n-Hexane | 0.44 | ++ | 1 | Chloroform | 0.38, 0.41 | + | 2 | Ethyl acetate | 0.82 | +++ | 1 | n-Butanol | 0.34, 0.42 | ++ | 2 | Aqueous | 0.27 | + | 1 | Aspergillus flavus | CEF | Methanol | 0.72 | ++ | 1 | n-Hexane | − | − | − | Chloroform | 0.63 | ++ | 2 | Ethyl acetate | 0.70, 0.66 | ++ | 2 | n-Butanol | 0.43 | + | 1 | Aqueous | 0.32 | ++ | 1 |
| Flowers | Aspergillus parasiticus | BEA | Methanol | 0.53 | +++ | 1 | n-Hexane | 0.47, 0.37, 0.41 | ++ | 3 | Chloroform | − | − | − | Ethyl acetate | 0.60 | + | 1 | n-Butanol | 0.43 | ++ | 1 | Aqueous | 0.38 | + | 1 | Aspergillus oryzae | EMW | Methanol | 0.64, 0.72 | +++ | 2 | n-Hexane | 0.55 | ++ | 1 | Chloroform | 0.42 | + | 1 | Ethyl acetate | 0.44 | ++ | 1 | n-Butanol | 0.35 | + | 1 | Aqueous | 0.54 | ++ | 1 |
| Stem | Aspergillus fumigatus | CEF | Methanol | 0.68 | ++ | 1 | n-Hexane | 0.42 | + | 1 | Chloroform | 0.51 | ++ | 1 | Ethyl acetate | 0.73, 0.69 | +++ | 2 | n-Butanol | − | − | − | Aqueous | 0.39 | ++ | 1 |
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: retardation factor; −: inactive component; +: small inhibition; ++: moderate inhibition; and +++: high inhibition.
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