2 Materials and methods
2.1 Sample preparation
The experimental design was organized in three subsequent trials. Butternut squash (C. moschata Duch) was provided by a local farm (TREF, Foggia, Italy). The products were harvested and stored at controlled temperature (about 12 °C) and relative humidity of 70% in a cool, dry and dark place for 2 weeks. For each experimental trial, the samples were transported to the laboratory and immediately processed.