Detection of Antimicrobial Activity of Cranberry Fruit Extract against Methicillin Resistant Staphylococcus aureus and Extended Spectrum Beta Lactamase Escherichia coli

Objective: Antibacterial effects of Cranberry fruit extract on Methicillin Resistant Staphylococcus aureus and Extended Spectrum beta lactamase producing E. coli and its comparison with Linezolid and Meropenem.

Materials and Methods: It is a Pre Clinical (in-vitro) study conducted in Ziauddin University from January 2020 to October 2020. All samples were collected from Ziauddin University. All clinical samples were collected inform of pus, urine, blood, tracheal aspirations, patients admitted in surgical and medical wards, intensive care units and outdoor patients who were attending clinics. All these samples were transported to Clinical Microbiology Laboratory, Ziauddin hospital, North Nazimabad campus and then culture and sensitivity test were performed there. Sample showing double growth and contamination on agar plates were excluded from study.

Results: Out of 80 samples included in this study 46(57.5%) were female and 34(42.5%) samples were male; female to male samples ratio of 1.35:1.The mean age was 45.71±11.83 years. MRSA commonly found in pus swab 15(37.5%) and 21(52.5%) ESBL producing E. coli found in urine samples. 14(35%) samples were observed anti-bacterial activity of cranberry fruit extracts against Extended Spectrum Beta Lactamase Producing Escherichia coli at 50 mg/ml concentration, followed by 10(25%) and 9(22.5%) samples at 60 mg/ml, 40 mg/ml were respectively. While resistance of Extended Spectrum Beta Lactamase Producing Escherichia coliwere observed high at different concentration level of cranberry fruit extracts. Good anti-bacterial activity of cranberry fruit extracts observed against Methicillin Resistant Staphylococcus aureus at different levels of concentration 20(50%), 23(57.5%), 21(52.5%), 26(65%), 29(72.5%) samples were 20 mg/ml,30mg/ml,40mg/ml, 50mg/ml, 60mg/ml respectively. Most superior and best dose of cranberry fruit extract against Staph Aureus in about 72.5% (29) at 60mg/ml and their Comparison with linezolid and meropenem against Methicillin Resistant Staphylococcus aureus and found best positive results as compared with Linezolid and found significant p value 0.005.

Conclusions: Cranberry extract has a lot of potential to prove itself to be a good antimicrobial agent. The cranberry fruit extract has high antimicrobial activity against methicillin resistant S.aureus and resistant strains of E. coli in comparison to linezolid and meropenem.