Journal
JOURNAL OF AOAC INTERNATIONAL
Volume 105, Issue 1, Pages 267-271Publisher
OXFORD UNIV PRESS INC
DOI: 10.1093/jaoacint/qsab113
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- Taif University, Taif, Saudi Arabia [TURSP-2020/124]
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This study analyzed the leaves of the medicinal plant Adhatoda vasica L. using GC-MS technique and evaluated its antioxidant activity. The analysis revealed the presence of various compounds in the leaves, including vitamin E and terpenes, which contribute to its antioxidant potential.
Background: Adhatoda uasica L. is a medicinal plant, known as Malabar nut in English, belonging to the family Acanthaceae. It has been used traditionally to treat respiratory disorders like severe coughs, colds, chronic bronchitis, asthma, tuberculosis, and other illnesses. The multifunctional range of bioactives found in it has piqued the interest of pharmaceutical companies, who are looking for more evidence-based ways to develop new formulations. Objective: To analyse the A. vasica leaves by GC-MS technique and evaluation of its antioxidant activity. Method: Methanolic extract of A. vasica L. (MEAV) leaves was analyzed by GC-MS for identification and characterization of its bioactives and traditional therapeutic claims. A widely anticipated 2,2-diphenyl-1-picrylhydrazyl (DPPH) method was used to determine the antioxidant activity of MEAV. Results: The major compounds revealed in MEAV leaves are: 1,3,5-triazine-2,4,6-triamine (3.06%); 2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one (5.35%); 5-hydroxymethylfurfural (16.82%); 2-butylphenol (6.85%); 3,4-dihydroxy-5-methyl-dihydro-furan-2-on (2.5%); 2(OR 3)-(1,1-dimethylethyl)-4-methoxyphenol (3.52%); megastigrnatrienone 3 (1.02%); tetradecanoic acid (1.52%); vomifoliol (0.58%); oxalic acid, cyclobutylhexyl ester (6.03%); hexadecanoic acid (6.06%); 4-ethyl-2-oxo-2,5,6,7-tetrahydro-1H-cyclopenta[B]pyridine-3-carbonitrile (10.08%); phytol (2.01%); and vitamin E (3.18%). A significant reduction in free radicals against DPPH was observed, which revealed the antioxidant potential of MEAV. Conclusion: MEAV consists of both polar and nonpolar components. GC-MS analysis was used to identify these compounds. The current work validates that the antioxidant activity of MEAV is attributed to the presence of compounds such as vitamin E and terpenes.
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