Microwave oven usability and safety: an empirical analysis of food splash and possible hazards for users

Bankole Kolawole Fasanya; Precious Oluwasemilore Fasanya

doi:10.18502/jfsh.v11i1.20610

Bankole Kolawole Fasanya Occupational Health Sciences, Engineering and Industrial Professions, University of North Alabama, USA.
Precious Oluwasemilore Fasanya Science, Lake County High School, Lake Central School Corporation, Schererville, USA.

DOI: https://doi.org/10.18502/jfsh.v11i1.20610

Keywords: Microwave ovens; Microorganism; Food splashed; Safety; Sanitary; Polymerase chain reaction; Internal transcribed spacer; Pre-heat

Abstract

Nowadays, microwave ovens have become a staple in every home and at public gatherings where food is needed. The popularity stems from its superior cooking performance compared to other methods. Microwaves can preserve vitamin C and other nutrients that degrade when exposed to heat better than other kitchen appliances. The effectiveness of microwave cooking has led many users to overlook the importance of using microwaves safely when preparing food. This study investigated the presence of harmful microorganisms in food splatters left inside microwave ovens. Samples were collected from six microwaves at six distinct sites, with a total of 12 swabs cultured from each microwave and tested for microbial presence. A total of 142 DNA samples were extracted, and both 16s rDNA and ITS rDNA were analyzed to identify bacteria and fungi. The sequence analysis revealed the presence of uncultured Lactococcus sp., uncultured Legionella sp., and Neottia nidus- avis bacteria, and a significant number of fungi, including Trichosporum lignicola, Candida spp., Saccharomyces cerevisiae, Aspergillus pseudoglaucus, Paecilomyces tenuis, Cercophora acanthigera, Epicoccum nigrum, and Leiotrametes Latina. The findings indicate that food splatters left in microwave ovens for several (three to four) days can harbor harmful microorganisms, such as bacteria and fungi. Findings also acknowledge the possibility of food cross-contamination. We recommend regular, thorough microwave cleaning after noticing food splashes to help prevent the spread of these microorganisms. Findings from this study will provide valuable insights into ongoing research on food safety and public health, specifically regarding microwave oven use.