Today, a grate attention has been paid to natural biopolymers as biocompatible and biodegradable materials for inclusion and controlled release of bioactive compounds. Chitosan is a natural cationic biopolymer and is the second important polysaccharide after cellulose. It has gained high interest due to its antimicrobial properties against different microorganisms such as fungi, yeasts, and bacteria. Its antimicrobial properties are seemed to be due to the presence of positively charged amine groups. The high viscosity of pure chitosan solution, limits the production of pure chitosan nanofibers. One approach to overcome this limitation is to mix some other natural biopolymers including proteins with chitosan solution. Visia ervili is a natural protein with low cost and high content of energy which could be used to reduce chitosan solution viscosity. However, the presence of some anti-nutrient factors limits its usage. So, in order to improve its nutritional quality it's necessary to omit or reduce these factors, first. The aim of this study was to produce chitosan visia ervili nanofibers via electrospinning. Firstly, chitosan/visia ervili solutions were prepared by dissolving different weight ratios of chitosan to visia ervili in trifluroacetic acid solvent. Secondly, Nanofibers were produced at the voltage20kv and tip to collector distance was 15cm. Then the fiber morphology, thermal properties, FTIR, and XRD patterns were investigated.According to the result,diameter average was 200 nanometr.and crystal structure was decreased and resistance was incresaed after of product nanofibers. In the next step, mint essential oil was encapsulated within chitosan/ visia ervili nanofibers. Finally, according to the results, the ratio of 20% was selected as the best ratio and the morphology, thermal properties, FTIR, XRD of the nanofibers investigated. Also, the release and storage stability of essential oil were examined. According to the findings, mint essential oil could be encapsulated within chitosan/visia ervili electrospun nanofibers. Keywords: electrospinning, natural biopolymer,nanofibers, essential oil
