Ascorbic acid in Iranian Rose species (2)

Fruits of Roses specially Rosa canina L. are one of the richest source of Ascorbic acid (AA) and have the best effect on human body. Iran is the main habitat of Roses in the world, and there are many native and endemic species. Previously three species (R. foetid J. Herrm., R. boissierii Crep., R. hemisphaerica J. Herrm.) were investigated and AA was (1000–4000)mg/100g. In the recent study two other species (R. canina, R. beggeriana Schrenk.) were collected from Taleghan in N.W of Tehran, identified and their voucher specimen were deposited in the Herbarium of faculty of pharmacy, Tehran university of medical sciences. Their pulps were dried and extracted via decoction method. AA were assayed via two methods of titrimetric (by2, 6-dichlorophenolindophenol) and spectrometric (by 2, 6-dinitrophenylhydrazine) with providing of calibration curve. Range of AA in these two species was 2200 and 4658mg/100g, respectively. While there is reported that the range of AA or Rosa species is 1095–6694mg/100g. In conclusion the range of AA and diversity of R. canina and R. beggeriana in Iran is very noticeable and will a good source of natural products.

Acknowledgments: Safar Ali asgari, Lina mehrabadi-e-yari.

Refrence: Joublan, J.P., M. Berti, H. et al. (1996), Wild rose germplasm evaluation in Chile. p. 584–588. In: J. Janick (ed.), Progress in new crops. ASHS Press, Arlington, VA.