Comparison of the quality properties of the Rose Hip fruit powder from three re gions of Iran with commercial sample

Rose hip (Rosa canina L.)is one of the valuable medicinal herbs which have healthy bioactive components. The aim of this research was to investigate the effect of drying of Rose hip from Lorestan, Saghez and Taleghan,as cut into two half or anintact fruit, on the physicochemical properties of Rose hip and to compare the fruits powder obtained from different regionswith commercial sample, which was imported. First, size, weight and flesh of the fruits (physical properties) were compared and then, total phenolic content, vitamin C content, total carotenoid content, antioxidant activity, oil content and acidity were investigated and were compared with a commercial powder. Results indicated that there were significant differences in the physical properties of the fruits from three regions, so that the size and weight of the fruits collected fromLorestanwas the highest and after that,Saghez samples were the best. The highest total phenol content was in the Saghez samples (103.68 mg Gal/ g d.m.) and then, Loresta nsamples (90.25 mg Gal/ gd.m.) had the highest phenol content. The fruit flesh of Lorestan had the highest contentment of vitamin C (4.46 mg vit C/g d.m). Antioxidant activities of the samples from Lorestan (92.13 %) and Saghez (92.50 %) were the highest. Total phenolic content, vitamin C, total carotenoid content and antioxidant activity of the commercial powder were the same or significantly lower than Lorestan and Saghezsamples.