Postharvest quality of acerola for processing as influenced by ripening stage and storage environment.
Santos, A. R. L. dos; Reinhardt, D. H.; Silveira, W. R.; Oliveira, J. R. P.; Caldas, R. C.;
Revista Brasileira de Fruticultura Year: 1999 Vol: 21 Issue: 3 Pages: 365-371 Ref: 33 ref.
1999
บทคัดย่อ
M. emarginata fruits harvested green, semi-ripe and ripe were held for 6 days under ambient conditions (26 deg C, 75% RH), in cold storage (4-7 deg C, 60% RH) or frozen (-4- to -11 deg C, 15-20 RH). Physical attributes (such as fruit weight, size and diameter, seed weight, pulp weight, pulp:seed ratio (w/w), texture and fruit dry weight percentage), chemical variables (such as vitamin C [ascorbic acid] and total titratable acidity), and physicochemical variables (such as total soluble solids (TSS), pH, TSS:acidity ratio and vitamin C:TSS ratio) were analysed after storage. The quality of fruits harvested and held under the above conditions was suitable for export. Fruits harvested green had the highest vitamin C levels, but their physical attributes were not as desirable as those of ripe fruits. Semi-ripe fruits could be handled during harvest and postharvest operations without undue quality losses. Cold storage and freezing maintained all physical fruit properties except for size and texture. F
reezing was more efficient than cold storage, avoiding vitamin C losses and changes in acidity content.