M.A. Thesis:

Evaluation of properties of tragacanth edible film enriched with essential oils and extracts of Rosmarinus officinalis and lasting impact on strawberry shelf life

Strawberry because of sensitivity to fungi is very short storage life. The use of anti-fungal synthetic chemical compounds in order to increase the shelf life of the fruit have sparked new concerns. For this reason, the use of safety procedures to control corruption and maintain fruit quality during storage is essential strawberries. The effect of gum tragacanth coverage with essential oils of rosemary extract on the quality of strawberries produced and evaluated in the refrigerator and the effects of three extracts and essential oils 2, 6 and 4 percent on the physicochemical characteristics of strawberry fruit during 21 days of storage at ±2 were evaluated 5°C . The results showed that by increasing the concentration of rosemary ph, acidity enhancement factor and factor a, factor B was reduced. Change in skin color coated fruits was observed to a lesser extent, the samples were clear and bright colors. Film Rosemary Essential Oil has high antimicrobial activity and an increase of 2% to 6% concentration of essential oils antimicrobial activity increases.

Keywords: edible coating, rosemary, tragacanth, durability