ISHS Acta Horticulturae 483: International Symposium on Vegetable Quality of Fresh and Fermented Vegetables
EFFECT OF VARIOUS FILMS ON SHELF LIFE OF SLICED STRAWBERRY FRUIT |
| Authors: | S. Yoo, S. Lee |
| Keywords: | AF-OPP, chitosan film, gas transmission |
| Abstract:
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. | |
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