Comparative analysis of the content of ascorbic acid in the flowers of Calendula officinalis L. growing in different districts of the Orenburg region

Tarenkova I. V., Vinokurova N. V., Bondarenko A. I., Sinegovets A. A., Mikhailova I. V.

The aim of this work is a comparative analysis of the content of ascorbic acid in the flowers of Calendula officinalis L. growing in different climatic conditions in the Orenburg region. The method of redox titration established that the largest amount of ascorbic acid is contained in the flowers of Calendula officinalis L. harvested in Sharlyksky and Ponomarevsky districts (1.030 ± 0.1% and 0.686 ± 0.08%, respectively), which can be explained by the climatic conditions of the growth of Calendula officinalis L.

Keywords:Calendula officinalis L., material of medicinal plants, ascorbic acid, Orenburg region.