Amr Zaitoon, L. Lim, C. Scott-dupree
Mar 1, 2021
Citations
0
Influential Citations
14
Citations
Journal
Food Hydrocolloids
Abstract
Abstract Ethyl formate (EF) is a naturally occurring insecticidal and antimicrobial volatile compound promising as an alternative to synthetic fumigants. In this work, an EF precursor (EFP) was encapsulated in free-surface electrospun ethylcellulose/poly (ethylene oxide) (EC-PEO) nonwovens and the release of EF from the precursor was evaluated using gas chromatography. The effect of EFP (up to 100% w/w, polymer content basis) on EC-PEO solution parameters and fiber morphology was studied. Scanning electron microscopy revealed that EFP particles were entrapped within the electrospun EC-PEO fibers. Fourier transform infrared spectroscopy did not reveal any specific interaction between EFP and the polymers in the nonwovens. When exposed to 0.1 N citric acid (CA) solution for 2 h at 25 °C, the nonwoven loaded with 10% EFP (w/w) released 0.037 mg EF/mg nonwoven (96% of the theoretical release). The EF release decreased significantly (p