Antibacterial Activity of Pineapple (Ananas comosus) Waste (Peel and Crown)

The aim of this research study is to determine the antibacterial activity of pineapple (Ananas comosus) waste (peel and crown) against Streptococcus sp. There are four different extraction solvents that been used which are ethanol, methanol, hexane and distilled water. The antibacterial activity was carried out using agar well diffusion method. The result showed that the highest inhibition zone was observed for ethanol crude extract which was 1.20±0.10 mm compared to inhibition zone of methanol
extract, 1.00±0.10 mm. For the hexane and distilled water, no detected inhibition was observed in the agar. This finding showed that the A. comosus waste (peel and crown) contain high level of antibacterial properties that can be used to prevent any bacteria which can attack the aquaculture species and human health. Further study need to be conducted to find the full structural component of antibacterial compound derived from the A. comosus. The result obtained can be used as a guideline for further research on this field in the future.