EFFECT OF VARIOUS FILMS ON SHELF LIFE OF SLICED STRAWBERRY FRUIT

Sliced ‘Bokyojosaeng’ strawberries were packaged with five different types of polymeric films and stored at 5°C for 2 weeks.
Oxygen diffusion rate of antifogging-oriented polypropylene (AF-OPP) and chitosan coating film were below 3000 cc/m²/day, and that of low-density polyethylene film (LDPE) was higher than other films.
Carbon dioxide concentration within chitosan film was higher than within the AF-OPP film with low gas permeability.
The berries stored in chitosan film maintained higher values of hardness than those in other films.
After 6 days, sliced strawberries markedly showed symptoms of softening.
Chitosan film was slightly effective in reducing development of skin and flesh color.
Most of the accumulated volatile compounds were ethanol.
After 6 days of storage, decay incidence and off-flavor were detected in the sealed films indicating that 6 days was the maximum time of marketability.
The effect of semipermeable chitosan films on delaying ripening appears to be related to the film’s gas diffusion rate.

International Symposium on Vegetable Quality of Fresh and Fermented Vegetables

S. Yoo, S. Lee

AF-OPP, chitosan film, gas transmission

https://doi.org/10.17660/ActaHortic.1999.483.31