Tensile strength (TS) and elongation (E) of chitosan films
The most films require high TS and E to make packages because it will damage during shipping, handling and sale. It is well known that edible film was more brittle and poorer elongation properties (Tapia-Blacido et al., 2005). The TS and E of chitosan films were between 9.03-16.01 MPa and 0.95-3.47%, respectively. The TS value of chitosan incorporating lemon grass oil was the highest; however, it was not significantly higher than that of the film that did not add any spice oil.