Autori: ŞTEF D. S., GERGEN I., TRAŞCÃ T. I., ŞTEF LAVINIA, RIVIS A.,HEGHEDUŞ M. G., BORDEAN DESPINA

Editorial: Romanian Biotechnological Letters, Vol. 15, No.5,, p.5611-5617, 2010.

Rezumat:

The aim of this paper was to analyze the influence of microelements source and composition
on the antioxidant activity of medicinal herbs. The microelements administered through salts, at NRC
(Nutrient Requirements Council) level (A) increased significantly TACFRAP (total antioxidant capacity
by FRAP method) for all groups of medicinal plants (a, b and c). The mineral salts and fritta
improved TACFRAP in the first group (a – very high TACFRAP) of the medicinal plants. The percent
differences were: +15.61 for A, +9.3 for B, +6.34 for C and D. Additionally, mineral salts improved
TACFRAP for the groups of medicinal herbs with medium (b) and low (c) TACFRAP. The lower values
were recorded on TACFRAP for the groups (b) and (c) when microelements were provided via fritta
and Sel-Plex. The mineral salts and fritta improved total phenols in the first group (a – very high
TACFRAP) of the medicinal plants. The percent differences were: +9.03 for A, +5.46 for B, +2.45 for
C and D. Also mineral salts improved the total phenols for the each group of medicinal herbs with
medium (b) and low (c) TACFRAP. The lower values on total phenols were obtained for the groups (b)
and (c) when microelements were provided via fritta and Sel-Plex. The results noticed at 24 hours
were similarly for both and differences were quite similarly with the first estimation.

Cuvinte cheie: antioxidant capacities, FRAP method, total phenols, DPPH, medicinal herbs