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Publication Type J
Authors Qasim, M., I. Aziz, M. Rasheed, B. Gul and M. A. Khan
Title EFFECT OF EXTRACTION SOLVENTS ON POLYPHENOLS AND ANTIOXIDANT ACTIVITY OF MEDICINAL HALOPHYTES
Source Pakistan Journal of Botany
Author Keywords Arabian Sea Coastal plants DPPH Economic potential FRAP Saline habitats Salt tolerant plants Secondary metabolites total flavonoid content antimicrobial activities biological-activities phenolic-compounds in-vitro dietary polyphenols l. extracts leaves fruits capacity
Abstract This study was conducted to determine the most effective solvent for extraction of polyphenols and antioxidant activity of medicinally important coastal halophytes (Thespesia populneoides, Salvadora persica, Ipomoea pes-caprae, Suaeda fruticosa and Pluchea lanceolata) known for high antioxidant potential. Five different solvents (water, 80% methanol, 80% ethanol, acetone and chloroform) were used to quantify polyphenols including total phenolic (TPC), total flavonoid (TFC) and proanthocyanidin contents (PC) and antioxidant capacity using DPPH radical scavenging and Ferric reducing antioxidant power (FRAP) activities. Among solvents of different polarities 80% methanol appeared most effective for polyphenol extraction. Thespesia populneoides had the highest polyphenols (TPC, TFC and PC) followed by Salvadora persica. Highest antioxidant activity was also found in T. populneoides and S. persica using the same solvent (80% methanol) which appeared better than synthetic antioxidants (BHA and BHT). The correlation analyses of each solvent showed strong to weak relationships among all studied parameters with maximum values (r and R-2) in methanol followed by ethanol and water. Weaker correlation of acetone and chloroform indicates low capacity of these solvents both for polyphenol extraction and antioxidant activity. Our results reveal that aqueous methanol extracts of coastal halophytes had comparatively higher antioxidant activity than commercial antioxidants which indicate both their prospective efficacy and potential to replace synthetic derivatives from edible and medicinal products.
Author Address [Qasim, Muhammad; Aziz, Irfan; Gul, Bilquees] Univ Karachi, Inst Sustainable Halophyte Utilizat, Karachi 75270, Pakistan. [Rasheed, Munawwer] Univ Karachi, Ctr Excellence Marine Biol, Karachi 75270, Pakistan. [Khan, M. Ajmal] Qatar Univ, Coll Arts & Sci, Qatar Shall Chair Sustainable Dev, POB 2713, Doha, Qatar. Gul, B (reprint author), Univ Karachi, Inst Sustainable Halophyte Utilizat, Karachi 75270, Pakistan. bilqueesgul@uok.edu.pk
ISSN 0556-3321
ISBN 0556-3321
29-Character Source Abbreviation Pak. J. Bot.
Publication Date Apr
Year Published 2016
Volume 48
Issue 2
Beginning Page 621-627
Unique Article Identifier WOS:000377612400027
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