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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
Antioxidant potential of Salvia officinalis L. residues as affected by the harvesting time
Industrial Crops and Products, Volume 54, Year 2014
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Description
A field experiment was conducted to valorize Salvia officinalis post-distilled aerial parts as natural antioxidants, at different harvesting times. Total phenolic contents were determined spectrophotometrically, the phenolic constituents were determined using HPLC with UV detection and the antioxidant capacity was assessed by DPPH, ABTS and FRAP assays. S. officinalis residues revealed high contents of rosmarinic acid and phenolic diterpenes as main components. The highest contents of total phenolics identified by HPLC (32204.96, 30035.00. μg/g DW) and phenolic diterpenes (20055.17, 18011.76. μg/g DW), as well as the best antioxidant activities were detected at the flowering phase. Rosmarinic acid (10768.65, 11723.29. μg/g DW) revealed the maximal accumulation at the vegetative phase, while the highest total phenolic contents estimated by the Folin-Ciocalteu assay (142.75, 146.76. mg GAE/g DW) were detected at fruiting. These findings suggest that S. officinalis by-products, particularly at flowering, may be considered as an interesting source of natural antioxidants. © 2014 Elsevier B.V.
Authors & Co-Authors
Ben Farhat, Mouna
Tunisia, Tunis
University of Carthage
Chaouch-Hamada, Rym
Tunisia, Tunis
University of Carthage
Tunisia, Zarzouna
University of Carthage, Institut Préparatoire Aux Etudes D'ingénieurs de Bizerte
Sotomayor, José Antonio
Spain, La Alberca
Instituto Murciano de Investigacion y Desarrollo Agrario y Alimentario
Landoulsi, Ahmed
Tunisia, Tunis
University of Carthage
Jordán, María José
Spain, La Alberca
Instituto Murciano de Investigacion y Desarrollo Agrario y Alimentario
Statistics
Citations: 69
Authors: 5
Affiliations: 3
Identifiers
Doi:
10.1016/j.indcrop.2014.01.001
Study Approach
Quantitative