2. Material and method
2.1. Materials
The PCRPET used in this study was supplied by Typack S.A .
(Chile), a company that is ISO 90 01:20 08 certi fied for all processes
and also FDA (Food and Drug Administration) approved to handle
recycled PET and export to Europe and USA. The PCRPET has also
been approved by the FDA for use in contact with fresh fruits. The
antifungal was potassium sorbate (Prinal, Chile) and the culture
medium used to test the antimicrobial properties was Potato
dextrose agar (Difco). Strains of B. cinerea were provided by INIA
(Instituto de Investigaciones A gropecuarias), La Pintana, Santiago,
Chile; isolated from grapes.