Abstract

SILVA, Rosana Sousa da et al. Quality of 'Isabel' grape treated with calcium chloride in postharvest and stored under modified atmosphere. Rev. Bras. Frutic. [online]. 2012, vol.34, n.1, pp. 50-56. ISSN 0100-2945.  http://dx.doi.org/10.1590/S0100-29452012000100009.

'Isabel' grapes were treated postharvest with calcium chloride (CaCl₂) and in modified atmosphere (MA) aiming its quality maintenance during storage at 12±1 ºC and 85 +2% RH. The experiment was carried on a completely randomized design, in a factorial scheme 5 x 2 x 5 with three replications, with five levels of CaCl₂ (0,0; 0,5; 1,0; 2,0 and 4,0%), two types of atmosphere [room and modified atmospheres (MA)] and five evaluations, during cold storage. The evaluations were titratable acidity (TA), soluble solids (SS), SS/TA ratio, pH, ascorbic acid, decay incidence, mass loss, rachis appearance, and berry drop index. MA reduced mass loss, incidence of decay, and maintained the green rachis appearance. CaCl₂ doses among 0,5 and 2,0% reduced decay incidence. The application of CaCl₂ associated with MA reduced berry drop index in 'Isabel' grape during cold storage.

Keywords : Vitis labrusca; berry drop; rachis appearance; decay.