Author/Authors :
Sirmah, P Nancy Université - Laboratoire d’Etudes et de Recherche sur le Matériau Bois, Equipe Chimie du Bois et Procédés de Préservation, France , Sirmah, P Moi University - Department of Forestry and Wood Science, Kenya , Mburu, F Moi University - Department of Forestry and Wood Science, Kenya , Iaych, K Nancy Université - Laboratoire d’Etudes et de Recherche sur le Matériau Bois, Equipe Chimie du Bois et Procédés de Préservation, France , Dumarçay, S Nancy Université - Laboratoire d’Etudes et de Recherche sur le Matériau Bois, Equipe Chimie du Bois et Procédés de Préservation, France , Gérardin, P Nancy Université - Laboratoire d’Etudes et de Recherche sur le Matériau Bois, Equipe Chimie du Bois et Procédés de Préservation, France
Abstract :
Research was carried out to explore antioxidant properties of Prosopis juliflora extractives and their additional utilisation value. Results showed that P. juliflora contained important amounts of flavanols, constituting of 4’-O-methyl-gallocatechin, (+)-catechins and (-)-mesquitol. Their amounts are different and highly dependent on the wood sample location in the tree. Reasons for these differences are not yet fully understood and need further investigation. Heartwood contained (-)-mesquitol as the main secondary metabolite responsible for the strong antioxidant properties of crude extracts obtained with solvents of different polarities. (-)-Mesquitol was also the main component of gums exuding from the stem. Crude bark extractives showed lower antioxidant properties which were attributed to the presence of 4’-O-methyl-gallocatechin. The lower antioxidant activity may be attributed to the presence of some inactive components in bark extractives which reduced overall activity of the extract. Extractives of P. juliflora could therefore be of interest as source of natural antioxidants for applications in food, cosmetic or pharmaceutical industries.
Keywords :
Flavanols , catechin , ( , ) , mesquitol extractives , metabolite , bark extractives
