Antimicrobial and phytochemical screening of Carica papaya leaves against bacteria causing food poisoning / Aina Qamarina Marof

Marof, Aina Qamarina (2019) Antimicrobial and phytochemical screening of Carica papaya leaves against bacteria causing food poisoning / Aina Qamarina Marof. [Student Project] (Unpublished)


Nowadays, there is the presence of bacteria which resistance toward antibiotic as it is one of the fast cure medicine. This resistance causes the rising number in food poisoning cases to occur. The aims of this study were to determine the antimicrobial activity of papaya leaves against bacteria causing food poisoning and obse1ved the phytochemical that presence in the sample. In this research, three different polarities of solvent were used to extract dried sample of papaya leaf which hexane (non-polar), ethyl acetate (semi-polar), and methanol (polar). The result from the extraction show that methanol has higher percentage yield followed by ethyl acetate and hexane. The phytochemical compounds that presence in each extracts were steroid, phenolic, tannin, terpenes and flavonoid. The results for antibacterial activity of C. papaya, showed that methanol has good antibacterial activity against P. eruginosa with 5.3 ± 4.0 mm at the concentration of 120 mg/mL meanwhile S. aureus had 3.0 ± 1.7 mm . P. aeruginosa and S. typhi were found to be lowest minimum inhibitory concentration (MIC) value with 7.5 mg/mL. This showed that C. papaya methanol extract have a potential as new antimicrobial agent against bacteria causing food poisoning. For the further study, the method of extraction can be improved by using Microwave assisted extraction (MAE) which reduced the extraction time and solvent volume. For the phytochemical screening, it can be improved by using a quantitative measurement for active antimicrobial compow1d in the extract.


Item Type: Student Project
Email / ID Num.
Marof, Aina Qamarina
Email / ID Num.
Thesis advisor
Iberahim, Dr. Rashidah
Subjects: Q Science > Q Science (General) > Study and teaching > Laboratories. General works
Q Science > QD Chemistry > Extraction (Chemistry)
Q Science > QK Botany > Plant physiology > Botanical chemistry. Phytochemicals
Q Science > QR Microbiology > Bacteria
Divisions: Universiti Teknologi MARA, Negeri Sembilan > Kuala Pilah Campus > Faculty of Applied Sciences
Programme: Bachelor of Science (Hons.) Biology
Keywords: Antimicrobial, phytochemical screening, Carica papaya leaves, bacteria causing, food poisoning
Date: 2019
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