Volume 5, Issue 3 (Summer 2019)
Abstract
Aims: Hospitalized patients are often immunocompromised as a result of invasive medical examinations and treatments. Of course, the tendency to do care practices for these patients and the hospital environment may facilitate the transmission of pathogenic microorganisms among them.
Materials & Methods: The study population and health status of volunteer patients were collected using a pretested questionnaire and patients information available in hospital files. A total of 102 samples were collected from patients’ wounds, noses, ears, and urine and microbiologically analyzed for the presence of Staphylococcus aureus species by plating on Manittol Salt agar. Colonies were purified by streaking on Nutrient agar, Gram stained, and tested for the presence of coagulase and the capability of growing on 3–5% salt concentration.
Findings: Male patients (51.3%) were more infected by S. aureus strains than female patients (48.7%). In terms of age, S. aureus infection rate was higher in patients within the age ranges from 17-50 years (56.32%) and lesser in patients within the age ranges from 51-100 years (43.68%). Genogram of the isolates indicated two major groups based on the genotypic responses to the antibiotics and extracts (This means the possible separation of the isolates into family groups according to their responses to antimicrobial agents). The prevalence of S. aureus colonization was higher in male patients.
Conclusions: Observed indices suggest that sex could be considered as a risk factor for S. aureus infection in patients. In addition to antibiotics, plants extracts could be used as an effective alternative for the treatment of S. aureus infections to control resistant S. aureus species.
Volume 9, Issue 2 (Spring 2023)
Abstract
Aims: This study aims to investigate the in-vitro antibacterial activity, mineral and vitamin compositions, proximate composition, and organoleptic properties of a syrup derived from Vitex doniana fruits.
Materials and Methods: V. doniana fruits were mashed, mixed with water, strained, and boiled to thicken the filtrate. The syrup’s antibacterial activity was tested on 7 clinical and 6 American Type Culture Collection (ATCC) isolates using well-in-agar diffusion method on Mueller Hinton agar. The fruit juice underwent mineral analysis using atomic spectroscopy and mass spectrometry. Proximate composition, vitamin, and organoleptic properties of a syrup were evaluated.
Findings: Clinical Escherichia coli 0157:H7 and Staphylococcus aureus isolates were susceptible to the syrup, with inhibition zone of 25 mm each while S. aureus ATCC 25923had the highest susceptibility with a 33 mm inhibition zone. The syrup showed varying minimum inhibitory concentrations (12.5-50 mg/ml) and minimum bactericidal concentrations (25-150 mg/ml) against tested bacteria. The syrup contained 18.4±0.36 mg calcium, 36.92±0.14 mg magnesium, 3.21±0.30 mg iron, 4.80±0.24 mg sodium, and 43.56±1.05 mg potassium as mineral composition per 100 g. Although the prepared syrup had higher calcium, magnesium and iron values prepared to the commercial sample, there was no significant difference between the two. Proximate composition analysis revealed moisture content was measured at 20.83±1.08% moisture content, pH=4.76, 0.20±0.01% crude fiber, 2.40±0.35% crude protein, 3.18±1.12% ash, 0.62±0.24% crude fat, and 76.70±0.16% carbohydrate levels in the syrup. Significant difference was only found in ash and carbohydrate values, with the prepared sample showing higher levels. The syrup exhibited higher vitamin content, including vitamin C, B1, B2, B6 and A, compared to the commercial sample. In terms of organoleptic properties, the prepared syrup scored slightly better in taste, flavor, and overall acceptability (0.18%) compared to the commercial product.
Conclusions: Based on these finding, the syrup derived from V doniana shows potential as a nutrient food product with antimicrobial properties. It could be used in healthcare, industrial applications (such as preservatives or sweeteners), and as a base for pharmaceutical formulations. Furthermore, the syrup may find applications in the confectionery, bakery industries, and traditional medicine.