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Phenolic Diterpenes, Flavones, and Rosmarinic Acid Distribution During the Development of Leaves, Flowers, Stems, and Roots of Rosmarinus Officinalis. Antioxidant Activity

Phenolic Diterpenes, Flavones, and Rosmarinic Acid Distribution During the Development of Leaves, Flowers, Stems, and Roots of Rosmarinus Officinalis. Antioxidant Activity

María José del Baño, Juan Lorente, Julián Castillo, Obdulio Benavente-García, José Antonio del Río, Ana Ortuño, Karl-Werner Quirin, Dieter Gerard

J Agric Food Chem. 2003 Jul 16;51(15):4247-53.

PMID: 12848492

Abstract:

The distribution of six compounds with three different polyphenol skeletons have been studied in Rosmarinus officinalis: phenolic diterpenes (carnosic acid, carnosol, and 12-O-methylcarnosic acid), caffeoyl derivatives (rosmarinic acid), and flavones (isoscutellarein 7-O-glucoside and genkwanin), each showing a characteristic behavior and distribution during the vegetative cycle. Only in leaves were all six compounds present, and the highest accumulation rate was related with the young stages of development. Rosmarinic acid showed the highest concentrations of all the polyphenols in all organs. The distribution of this acid in leaves, flowers, and stems suggests that in the first stages of flower growth, levels were due to in situ biosynthesis, and in the last stages, the contribution of transport phenomena was increased. The antioxidant activity of six extracts with different polyphenolic composition was evaluated in aqueous and lipid systems. The results clearly suggest that rosemary extracts are excellent antioxidants in both aqueous and lipid systems.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP62201712	12-O-Methylcarnosic acid		62201-71-2	Price

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