ANTIMICROBIAL EFFICACY OF GUAVA (Pisdium guajava) AND ORANGE (Citrus sinensis) STEMS EXTRACT AGAINST Streptococcus mutans and Candida albicans

📄 Project Abstract

This research was conducted in Microbiology Laboratory of Godfrey Okoye University to determine the antimicrobial efficacy of aqueous, methanol, ethanol of Pisdium guajava and Citrus x sinensis on the pathogenic Streptococcus mutans and Candida albicans. The Dimethyl sulfoxide was used for dissolving the plant extracts. Pisdium guajava showed antimicrobial activity against C. albicans with the exception of methanol showing no zone of inhibition to any of the isolates. The aqueous and methanol plant extract of Citrus x sinensis showed antimicrobial activity against S. mutans and C. albicans. Citrus x sinensis showed highest inhibition with MIC concentration of 0.256g/ml, 0.064g/ml, 0.032g/ml showed slight growth while concentration 0.016g/ml and 0.008g/ml showed heavy growth, there were scanty growths in the MBC and MFC plates. Phytochemical screening, proximate, chromatographic analyses and the antimicrobial activities of tender stem of Psidium guajava and Citrus x sinesis, were carri...