LINSEED OIL LOADED ANTIMICROBIAL AIR FILTERS TO BE USED IN REFRIGERATORS

Date

2024-12-2

Author

CANAT, EVŞEN DENİZ

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Electrospinning is a technology that is commonly used for electrostatic fiber formation. According to the literature, many studies implied that electro spun fibers are easy to fabricate, cost-effective and easily scalable from laboratory to commercial production. These properties enable them to be used in a wide range of areas such as biomedical, electronics, healthcare, cosmetics, protective clothing, environmental protection, and filtration. The objective of the study was to develop plant extract coated antimicrobial air filters in refrigerators to increase the shelf life of food materials during chilling storage. Linseed essential oil has strong antimicrobial activity against food pathogens highlighting its potential as a tool to achieve food safety. Owing to its antimicrobial properties, it was decided to incorporate linseed essential oil into nanofibers. As an alternative for electrospinning filters, non-woven fabric was spray coated with linseed oil at different concentrations. Antimicrobial activity of the filters was investigated. Refrigerator without any kind of filter was used as control (C). Instrumental odor removal test was done with different type of filters. Also, sensory analysis was done to determine odor removal efficiencies of filters. The effects of antibacterial air filters on quality attributes of the strawberry and carrot were studied. For this purpose, texture and weight loss of carrots were determined, and sensory analysis was done for strawberry. Results show that both electrospinned (ES) and spray coated (SC) filters have antimicrobial effect. In 24h, ES filters resulted in 2.62 log reduction in E.coli and SC filters caused 3.22 log reduction in E. coli as compared to uncoated filter material. However, the results indicated that both SC and ES filters didn’t have a significant effect on texture, weight loss and sensory properties (color, texture, visual assessment, and overall acceptability) of fruits and vegetables.

Subject Keywords

filter, antimicrobial, electrospinning, coating, odor

URI

https://hdl.handle.net/11511/112920

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Graduate School of Natural and Applied Sciences, Thesis