From previous studies, Z. officinale, Z. montanum, Z. zerumbet are Zingiberaceous Plants
which is popular to study. The plants in Zingiberaceae are diversed and they have been given
interests within the study of pharmacology and elements seriously. However studies related to
the antibacterial activity is minimal. Therefore, this study about zingiberaceous plants screening
for test antibacterial activity, it is certainly important and interesting to be exploited further