Research Article

In Vitro Antimicrobial Bioassays, DPPH Radical Scavenging Activity, and FTIR Spectroscopy Analysis of Heliotropium bacciferum

Table 2

Antifungal activity of all extracts of Heliotropium bacciferum.

Plant partsPlant extracts (µg)Zone of inhibition (mm) ± standard error meanSt. dev
Tested fungal strains
ANAFLAPAOAF

LeavesMethanol17 ± 0.4415 ± 0.3814 ± 0.5111 ± 0.54R3.899
n-Hexane14 ± 0.5217 ± 0.6711 ± 0.7016 ± 0.6813 ± 0.532.387
Chloroform12 ± 0.2813 ± 0.53R16 ± 0.4515 ± 0.493.507
Ethyl acetate15 ± 0.4317 ± 0.3212 ± 0.4617 ± 0.8312 ± 0.612.510
n-Butanol11 ± 0.4314 ± 0.51R15 ± 0.5710 ± 0.293.209
Aqueous10 ± 0.27R9 ± 0.2811 ± 0.25R1.789

FlowersMethanol14 ± 0.2517 ± 0.6312 ± 0.2514 ± 0.6011 ± 0.202.302
n-Hexane17 ± 0.6315 ± 0.4813 ± 0.4012 ± 0.2715 ± 0.582.191
Chloroform11 ± 0.2614 ± 0.46R13 ± 0.3511 ± 0.282.683
Ethyl acetate16 ± 0.5915 ± 0.5911 ± 0.3515 ± 0.4410 ± 0.452.702
n-Butanol13 ± 0.4711 ± 0.23R16 ± 0.3914 ± 0.233.421
AqueousR12 ± 0.3810 ± 0.319 ± 0.22R2.121

StemMethanol16 ± 0.5413 ± 0.4215 ± 0.3713 ± 0.4815 ± 0.511.342
n-Hexane13 ± 0.3511 ± 0.3116 ± 0.6317 ± 0.5412 ± 0.332.588
Chloroform15 ± 0.5416 ± 0.56R12 ± 0.2714 ± 0.373.564
Ethyl acetate12 ± 0.2618 ± 0.5014 ± 0.2815 ± 0.5516 ± 0.542.236
n-Butanol15 ± 0.34RR12 ± 0.2611 ± 0.283.435
AqueousRR12 ± 0.2210 ± 0.25R2.302

ControlClotrimazole24 ± 0.8222 ± 0.8720 ± 0.7826 ± 0.7922 ± 0.682.280

Zone of Inhibition (mm) showing sensitivity. R: no inhibition zone (resistance); clotrimazole: 8 µg; α: standard deviations; AN: Aspergillus niger; AFL: Aspergillus flavus; AP: Aspergillus parasiticus; AO: Aspergillus oryzae; and AF: Aspergillus fumigatus.