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Packagings for cold storage of guavas.

Jacomino, A. P., Sigrist, J. M. M., Sarantopoulos, C. I. G. de L., Minami, K., and Kluge, R. A.

Revista Brasileira de Fruticultura (Brazil). Volume 23, Number 1, Apr 2001. Pages 50-54.

2001

บทคัดย่อ

Packagings for cold storage of guavas.

The effects of different plastic films were compared in guava (Psidium guajava) cv. Kumagai fruits stored at 10 deg C and 85-90% RH for 7, 14, 21 and 28 days, followed by 3 days at 25 deg C and 70-80% RH. The packaging materials tested were: polyolephinic film with selective permeability (PPS), low density polyethylene film with mineral incorporation (Z30), high density polyethylene film (PEAD) and nylon film special for vegetables (NVE). Z30 and NVE films induced an anaerobic atmosphere and a high concentration of CO2 inside the packages. The guavas held in these packages developed off flavour after 14 days of storage. Those held in NVE films developed brown spots on the peel due to the high concentration of CO2. The PPS film showed the best results. In spite of affecting the normal ripening of the guavas, the fruits presented good appearance (i.e. fresh appearance and uniform colour), normal flavour and absence of decay, for up to 14 days of storage. During this same period, the control fruits became excessively mature and showed a high incidence of decay.