It was studied the effect of different types of packages and, the action of sulfur dioxide (SO2), in post harvest of fine grapes var. Crimson Seedless and Italia. The fruits, harvested in a farm located in Boa Vista, State of Roraima (Lat. 2° 50' 06'' N and Long. 60° 40'28''W), showed, soluble solids (SS) medium of 16.50 and 14.80°Brix, for the varieties Crimson Seedless and Italia, respectively. Prior to treatment, bunches were cleaned in sodium hypochlorite (NaOCl) solution at 100 mg.L-1, previously acidulated, for 10 minutes. For the modified passive atmosphere were used bags of low density polyethylene (LDPE), not perforated, with 0.010, 0.015 and 0.020mm of thickness and, arranged in corrugated cardboard (4kg) and wood (7.5kg) boxes. To produce SO2 it was used Kraft papers of quickly liberation, with 3 and 8g of sodium metabysulfite (Na2S2O5). After the treatment, the fruits were storage in cold chamber at 4 ± lºC and 95 ± 3% of relative humidity (R.H.) The evaluation were carried out in the moment of harvest and, at 7, 21, 35, 42 and 56 days of cold chamber, for cluster weight loss, percentage of detached and deteriorated berries, quality of stem and, content of SS of fruits. After eight weeks it was carried out a sensorial analysis for the two varieties. It was identified in both varieties, that grapes submitted to generate SO2, containing 3g of sodium metabysulfite and, wrapped in packages of LDPE of 0.020mm of thickness, regardless type of secondary package showed smaller weight loss, smaller percentage of detached and deteriorated berries and, best quality of stem. The results in the sensorial analysis had agreed to the physical-chemical results. There is no significant difference in the contents of SS between the treatments, in both varieties.
quality; Vitis vinifera L.; Roraima; sodium metabysulfite
