Development of low-density polyethylene films with lemon aroma

Abstract

a b s t r a c tThe purpose of this study was to develop active films that impart flavour and to test them in the packaging of biscuits. The films were mechanically analysed, with respect to colour and water vapour permeability (WVP) to evaluate the changes in the films resulting from the active agents and conditioning time. We used low-density polyethylene with incorporated lemon essential oil (EO) and/or lemon aroma to create the films that were used in biscuits and evaluated over a 30 day period. The results showed that the films showed a lower elongation due to the incorporation of active agents, and they showed a reduction of tensile strength over time. In addition, the combined use of EO and aroma did not affect the WVP value. As for colour, flavouring films had a more yellow colour and were opaque. Sensory biscuits packed with flavouring films showed an average acceptance of approximately 8.0 based on aroma and taste. These films represent an innovation for the packaging industry, and, based on our results, we recommend the combined use of EO and aroma to develop films for flavouring.

Development of antifungal films based on low‐density polyethylene and thyme oil for avocado packaging

“…have also demonstrated that the water vapor transfer process depends on the hydrophilic–hydrophobic ratio of the film constituents and hence the incorporation of hydrophobic oils in films decreases the WVTR and increases the barrier properties. According to Dias et al ., the presence of oil phase could increases the tortuosity factor in polymer matrix.…”

“…This also allows the combined application of natural antimicrobial agents and modified atmospheric packaging technologies to preserve quality and shelf life of fresh produce. Dias et al . developed low‐density PE (LDPE) based flavoring films with essential oils and lemon aroma for cereal products packaging.…”

Current and Potential Use of Citrus Essential Oils

“…Dias et al [48] also used EOs for developing a low-density polyethylene flavouring films imbued with and/or lemon aroma. They showed that the films had a lower elongation due to the incorporation of active agents, combined whit a reduction of tensile strength over time.…”

Antimicrobial packaging system for minimally processed fruit

“…This behavior was much pronounced for the films containing higher concentrations of the active mixture. Changes in the transparency of the films were also reported by Dias et al (2013) who found that extruded LDPE films with lemon aroma or lemon EO in the range of 5-10% showed a more opaque, yellow coloration and therefore less transparent with respect to films without active agents.…”