EFFECT OF Na2S2O5 AND ASCORBIC ACID IN QUALITES PARAMET OF TWO LOCAL CULTIVARS FROM DRYING GRAPES(Vitis vinifera L).

Abstract

ABSTRACT: This study was conducted in the Laboratory of the High studies, of the Faculty of Agriculture of Al Qasim Green University Horticulture and land scape Design , during the season of 2016 to study the effect of Sodium metabisulfate at a concentration of 2gm-L by dipping the fruits for 5 minutes and Ascorbic acid at a concentration 5gm-L by dipping the fruits for 10 minutes and control treatment with a concentration of 0gm-L dipping fruit with distilled water only in Qualites,The two dried grape varieties are Shada Bayda and Dise Al-Eniz in a direct solar drying method. The results showed that Dise Al-eniz was significantly superior upon Shada Bayda with an increase in the percentage of total sugars and the percentage of reflux with decrease the percentage of total acidity, the same result was obtained with the use of sodium sulfate. The beas interaction was between Dise Al-Anz and treatment of mitabi sulfate sodium characterized by the highest rats of TSS , total sugars , and the percentage of filtration was 26.17 , 16.42 , and 13.23 respectively and was characterized by a decrease in the total acidity rate was 0.47