PENGARUH EKSTRAK KULIT JERUK KALAMANSI TERHADAP PERTUMBUHAN BAKTERI SALMONELLA TYPHI DAN SUMBANGANNYA PADA PEMBELAJARAN BIOLOGI SMA

Kalamansi orange (Citrus microcarpa Bunge.) has the potential as a source of antimicrobials because skin fruit contains flavonoid compounds, tannins, and alkaloids which have been shown to be able inhibit growth gram-negative bacteria. This study aimed obtain information on effect ethanolic extract kalamansi peel (C. Salmonella typhi bacteria land minimum inhibitory concentration S. ltyphi Experimental research with completely randomized design, results were analyzed using One Way ANOVA test. Calamansi ethanol concentrations 0%, 5%, 7.5%, 10%, 12.5%, 15% was tested for antibacterial activity against disc diffusion method. The parameters observed diameter inhibition zone formed around lpaper disc. this showed that had significant bacteria, 95% confidence level (MIC) bacterial growth. at precise, MIC 5% an average 5.27 mm. donated in form student worksheets related their role life biology subject SMA class X even semester