RESUMO: "Substâncias eliminadoras de radicais livres das partes aéreas de Grammosciadium platycarpum Boiss. & Hausskn. (Apiaceae) e análise por CG-MS dos óleos essenciais de seus frutos." Grammosciadium platycarpum Boiss. & Hausskn (Apiaceae) é uma das três espécies endémicas no Irã do gênero Grammosciadium DC. Consumo da parte aérea da planta afeta a função renal e causa diurese. No ensaio por DPPH o extrato metanólico apresentou o maior nível de atividade de antioxidante por radicais livres (RC 50 = 1,196 x 10 -2 mg/mL) entre os extratos. Análises por HPLC preparativa de fase reversa do extrato metanólico resultou no isolamento de nove flavonóides, os quais foram responsáveis pela atividade de antioxidante do extrato metanólico. A análises por CG-EM dos óleos essenciais levou à identificação de 29 terpenóides, principalmente monoterpenos (não-oxigenados 3,97% e oxigenados, 77,49%), os quais representam mais de 96% do total de óleos.Unitermos: Grammosciadium platycarpum, Apiaceae, DPPH, antioxidante, Cg-EM, flavonoide, óleo essencial.ABSTRACT: Grammosciadium platycarpum Boiss. & Hausskn (Apiaceae) is one of three endemic Iranian species of the genus Grammosciadium DC. Consumption of the aerial parts of this plant affects renal function and causes diuresis. In the DPPH assay the methanol extract showed the highest level of free radical scavenging activity (RC 50 = 1.196 x 10 -2 mg/mL) among the extracts. Reversed-phase preparative HPLC analyses of the methanol extract yielded nine flavonoids, which were responsible for the free radical scavenging activity of the MeOH extract. The GC-MS analyses of the essential oils led to the identification of 29 terpenoids, mainly monoterpenes (non-oxygenated 3.97% and oxygenated 77.49%) accounting for over 96% of the total oils.
RESUMO: "Substâncias eliminadoras de radicais livres das partes aéreas de-2 mg/mL) entre os extratos. Análises por HPLC preparativa de fase reversa do extrato metanólico resultou no isolamento de nove flavonóides, os quais foram responsáveis pela atividade de antioxidante do extrato metanólico. A análises por CG-EM dos óleos essenciais levou à identificação de 29 terpenóides, principalmente monoterpenos (não-oxigenados 3,97% e oxigenados, 77,49%), os quais representam mais de 96% do total de óleos.Unitermos: Grammosciadium platycarpum, Apiaceae, DPPH, antioxidante, Cg-EM, flavonoide, óleo essencial.ABSTRACT: Grammosciadium platycarpum Boiss. & Hausskn (Apiaceae) is one of three endemic Iranian species of the genus Grammosciadium DC. Consumption of the aerial parts of this plant affects renal function and causes diuresis. In the DPPH assay the methanol extract showed the highest level of free radical scavenging activity (RC 50 = 1.196 x 10 -2 mg/mL) among the extracts. Reversed-phase preparative HPLC analyses of the methanol extract yielded nine flavonoids, which were responsible for the free radical scavenging activity of the MeOH extract. The GC-MS analyses of the essential oils led to the identification of 29 terpenoids, mainly monoterpenes (non-oxygenated 3.97% and oxygenated 77.49%) accounting for over 96% of the total oils.
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