المجلة الدولية للعلوم والتقنية

Obtaining good quality food and beverages has been and remains the main goal of man since he is on the surface of the earth. Safety of food and drink is a prerequisite for its quality. What is meant by its safety is that it is free, or it contains guaranteed and permitted concentrations of any natural substance or other substance that may make it harmful, especially canned food, and what is added to it during canning in order to prevent its corruption and its exposure to damage, and additives are any material that is consumed as food and used as a food ingredient whether it has a nutritional value or not In order to achieve many manufacturing purposes when they are prepared, canned, transported or stored, and these additives become an integral part of the cans. This study relied on measuring preservative concentrations in some of the local and imported juice samples in Libya. 7 samples were collected from shops in Al-Khoms, 3 local samples and 4 imported. Sodium benzoate concentrations were measured in these samples at a rate of two replications for each sample where Sodium benzoate was extracted in the form of benzoic acid and the acid concentration was measured by direct titration with a basic solution for the local and imported juice samples where the lowest value and the highest value for the preservative concentration of samples No. (2.4) reached (1830- 274.50ppm) respectively, in general it is considered Results of preservative concentration within pain limits Only samples (4 & 6) were allowed to exceed the standard specifications, as they gave values for preservative concentration more than (1000ppm).