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In this study it was found that Acorus calamus possesses antimicrobial activity
though a lack of antibacterial activity was previously reported (Phongpaichit et al.,
2005). Methanol extracts of Acorus calamus were tested against Staphylococcus
aureus and Escherichia coli but the Acorus calamus was unable to inhibit
Staphylococcus aureus (Phongpaichit et al., 2005). In this research Acorus calamus
shows activity against some Staphylococcus aureus strains and Escherichia coli
strains (Table 4.10 - 4.19).
Albizia adianthifolia had no activity against Staphylococcus aureus, Bacillus subtilis,
and Klebsiella pneumoniae according to McGaw et al. (2000), but in this study it was
found to be active active against Klebsiella pneumoniae, Staphylococcus aureus and
less effective against Escherichia coli (Table 4.10 - 4.19). Elkatib et al. (2006) reports
that methanol extracts of Baccharoides adoensis leaves, stem and fruits were able to
inhibit Escherichia coli and Staphylococcus aureus. As far as other test
microorganisms are concerned it seems as if nothing has been done. The findings of
Elkatib et al. (2006) correspond to the findings of this research as Staphylococcus
aureus and Escherichia coli were inhibited by Baccharoides adoensis extracts (Table
4.10 - 4.19).
According to Martini (2004) Combretum erythrophyllum has shown antimicrobial
activity against Gram positive and negative bacteria (Staphyllococcus aureus and
Escherichia coli). Combretum erythrophyllum has shown antibacterial activity agianst
Staphylococcus aureus and Escherichia coli as shown in (Table 4.10 - 4.19).
Gunnera perpensa has been tested against Staphylococcus aureus using acetone
extract (McGaw et al., 2005). The results were positive which corresponds to the
findings of this research (Table 4.10 - 4.19). Lippia javanica has previously been
tested against Staphylococcus aureus and Escherichia coli (Table 4.24) (Minenzeh,
2004) which correspond to the findings of this research (Table 4.14 - 4.23).
Pentanisia prunelloides was extracted with ethanol which resulted in the inhibition of
Bacillus subtilis, Staphylococcus aureus, Escherichia coli and Klebsiella pneumoniae
(Yff et al., 2002). Pentanisia prunelloides was not effective against Bacillus subtilis
(Table 4.10) but it was able to inhibit Staphylococcus aureus, Klebsiella pneumoniae
and E. coli (Table 4.10 - 4.19).
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