Compare the effect of drying of the sun and drying the artificial oven on the chemical composition of Qamar Al -Din product

Abstract

Prunus Armeniaca L. is one of the most important fruitful trees in many countries, including Syria, as it is characterized by the production of fruits with a desirable taste and good nutritional value. Due to the fact that the apricot fruits are characterized by a short storage age and their ability to damage at speeds, various methods were developed to preserve them from damage, the most important of which is drying the eaten part.

In this research, Qamar Al -Din was manufactured by drying (in the sun directly and in the industrial oven at 68 C^o) and pre-treatment with sodium meta-bisulphite solution with a concentration (1.5 grams /liter) for an hour and studying the effect of previous transactions on some chemical compounds in the resulting Qamar Al -Din product. It amounted to the lowest value of water activity (0.583 ± 0.005) in Qamar al -Din resulting from industrial drying treated with sulfur.  It reached the lowest percentage of the total acidity
 (0.99 ± 0.01%) in Qamar al -Din resulting from industrial drying treated with sulfur. The highest value of vitamin C and vitamin A (9.66 ± 0.01 mg/100 g) and (10.52 ± 0.02 µg RE/100 g) respectively in Qamar al -Din resulting from industrial drying treated with sulfur. The highest value of the total phenols (397.3 ± 1 mg Galic acid/100 g) in Qamar al -Din resulting from the witnessed artificial drying. The best transactions were the samples of Qamar Al -Din which is treated with sulfur resulting from industrial drying at a temperature of 68 C^o.