Title:Microbiological Quality of Unpeeled Fruits Sold in the Local Market of
Tangail District, Bangladesh, and Assessment of Health Impacts
Volume: 19
Issue: 3
Author(s): Md. Rayhan Ali, Safaiatul Islam, Md. Omar Faruque, Md. Firoz Ali, Fausiya Zaman Suha, Md. Tarikul Islam, Muhammad Wasim and Shahin Mahmud*
Affiliation:
- Department of Biotechnology and Genetic Engineering, Mawlana Bhashani Science and Technology University,
Tangail-1902, Bangladesh
Keywords:
Total Viable Count (TVC), Total Coliform Count (TCC), Colony Forming Unit (CFU), Anthropometric, Antibiogram, Antibiotic-resistant.
Abstract:
Introduction: Fruits are good sources of vitamins, nutrients, minerals, micronutrients
and fiber. However, fruits are usually eaten uncooked, which is hazardous for health as fruits are
highly susceptible to microbial contamination during harvesting or postharvest processing.
Methods: Nine types of fruit that we usually eat without peeling were collected and tested them
by using different standard microbiological methods. Biochemical and antibiogram tests were
performed to confirm bacterial isolates and antibiotic-resistant patterns. An anthropometric assessment
was also performed to evaluate whether common local fruits caused any prevalent digestive
disorders.
Results: The highest Total Viable Count (TVC) was found in guava (1.95×105 CFU/g), whereas
the highest Total Coliform Count (TCC) was identified in grapes (3.39×104 CFU/g). The mean
value of TVC of all fruits was 7.112×103 CFU/g, and TCC was 6.02×102 CFU/g, respectively.
Escherichia coli, Salmonella spp., Shigella spp., and Vibrio spp. were confirmed by biochemical
tests. Antibiogram study shows that these bacterial isolates were resistant to commercially available
antibiotics. E. coli isolates were resistant to Penicillin (73.3%); Salmonella spp. isolates
were resistant to Penicillin (80%) and Amoxicillin (80%). Vibrio spp. isolates were resistant to
Penicillin (66.67%), Amoxicillin, and Erythromycin (60%). The anthropometric assessment
showed that acidity occurs more frequently than abdominal pain and digestive disorder among
the correspondents. In the case of male and female respondents, black plum and apple were
mostly responsible for gastric acidity, and the frequencies were 41% to 45%, respectively.
Conclusion: Fruit is a natural source of vitamins and minerals which are essential for our health;
at the same time, steps must be taken to ensure that they are free from pathogenic microbes.
Therefore, public awareness of proper hygiene and good health is necessary.