“Antioxidant activity and chemical composition of essential oils from Atriplex undulata”.

SILVANA RODRIGUEZ; ANA PAULA MURRAY

NATURAL PRODUCT COMMUNICATIONS

NATURAL PRODUCTS INC

Lugar: Westerville, Ohio, USA; Año: 2010 vol. 5 p. 1841 - 1844

1934-578X

The essential oil from aerial parts (stems and leaves) of Atriplex undulata (Moq) D. Dietr. (Chenopodiaceae) has been studied for its in vitro antioxidant activity. The chemical composition of the oil obtained by hydrodistillation was determined by GC and GC-MS. The major constituents were p-acetanisole (28.1%), â-damascenone (9.3%), â-ionone (5.1%), viridiflorene (4.7%) and 3-oxo-á-ionol (2.2%). The antioxidant activity of the oil was determined by two methods: Crocin bleaching inhibition (Krel= 0.72 ± 0.15) and scavenging of the DPPH radical (IC50 = 36.2 ± 1.6 mg/mL). The presence of active compounds like    p-acetanisole, carvone, vanillin, 4-vinylguaiacol, guaiacol, terpinen-4-ol and á- terpineol could explain the antioxidant activity observed for this oil.