Antimicrobial activities of galangal extracts are
present in Table 2. The results indicate that S.
epidermidis and S. cerevisiae were susceptible to the
extract. The extract was less antimicrobial activity
against B. cereus and B. megaterium and there was no
antimicrobial activity against some Gram-negative
bacteria: Salmonella sp., E. aerogenes and Pseudomonas
aeruginosa. S. cerevisiae was a primary representative of
eukaryotic microorganisms that showed the susceptibility
to the galangal extract as the same as the previous
study; Janssen and Scheffer (1985) indicated that ACA
had inhibitory effect against T. mentagrophytes.