Akademik Veri Yönetim Sistemi
International Journal of Secondary Metabolite, cilt.7, sa.3, ss.160-173, 2020 (Hakemli Dergi)
Free radicals are shown as the main reason of many chronic and
degenerative diseases. Because of the toxicity and undesirable effects of
synthetic antioxidants, finding of new antioxidant natural agents is very
important, especially edible plants. As an edible plant, valerian is used for
various aims. Also, Valeriana species are known with their antioxidative
compounds. In our previous study, some biological activities of Valeriana
alliariifolia Adams roots extracts, collected in 2012, and the chemical
compositions of active samples were determined. For this study, after 5 years
collected plant materials were investigated again to determine and compare the
antioxidant activities, the total phenolic contents and the chemical composition
profile of the extracts from different plant-parts and to compare obtained results
with the previous data. While RWI, RWM1 and RWM1residue were found
most active by DPPH method and AHM1 by FRAP method, REM1 showed
the highest activity by CUPRAC method. The high activity of AHM1 is parallel
to its phenolic content. It can be thought that the difference between the results
of our two studies, is due to the change of plant content from year to year and
various environmental factors. This is important for achieving standardization
in the production of its preparations.