Sadržaj i stabilnost folata u prirodnim i sokovima obogaćenim folnom kiselinom
2011
Berina Musić | Asima Begić-Akagić
In the world there is a trend of food enrichment with folic acid because of the importance of this particular vitamin which is thermo labile and its concentration decreases during processing and storage. Fruit drinks are a natural source of folate and one of the folic acid most enriched products. With regard to the importance of folates and folic acid in nutrition of pregnant women and children, the aim of this work is to modify and adopt the method for determination of folic acid in fruit drinks. Furthermore, the aim of this work was to determine the content of folic acid in fruit drinks, and then examine their stability which depends on: kind of fruit, origin of this vitamin (natural or synthetic) and type of packaging materials (glass, plastic or pure-pack). A total of 16 different samples of fruit drinks were analyzed, out of which six drinks had the folic acid present in its natural form and ten samples in which folic acid was present in its synthetic form. The results of this research work have shown that the standard microbiological method for determination of the content of the folic acid and folates in food can also be used for determination of this vitamin in fruit drinks with some modification that are explained in this work. The content of natural folates in the analyzed samples of orange juice ranged between 24,12 μg/100ml and 29,16 μg/100ml.
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