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Aims of MHSR Journal

• To serve as an important medium for the publication of original research in the field of medical science and health research, thus filling gaps in health knowledge for effective utilization of research findings
• To impart current medical knowledge and updated scientific information obtained from research to health professionals for better and appropriate health care management
• To disseminate recent basic, applied and social research findings among health personnel of different strata for enhancing worldwide health development

Archives   2009

Myanmar   Health   Sciences   Research   Journal

Volume   21,  Number   1

TITLE:   The phytochemical constituents and the antioxidant effects of different extracts of Thea sinensis Linn.(Tea) leaves.
AUTHOR:   May Aye Than; Mi Mi Aye; Than Soe; Win Win Maw; Maung Maung Htay
SOURCE:   Myanmar Health Sciences Research Journal. 2009; 21(1): 12-16
ABSTRACT:   Antioxidants may play a major role in the prevention of diseases, including cardiovascular and cerebrovascular diseases, some forms of cancer and effective to be long life and anti-aging. Thus, the aim of this study was to evaluate phytochemical constituents and the antioxidant activity of different extracts of Thea sinensis Linn. (vufzuf) leaves. It was found that leaves of Thea sinensis Linn. contained alkaloids, -amino acids, basic compounds, flavonoids, phenolic compounds, reducing sugars, saponins, steroids and terpenoids. The chloroform, ethanol, petroleum ether extracts of tea leaves were tested for their antioxidant activity by using thiocyanate method (the inhibition of linoleic acid autoxidation to detect lipid oxidation) in comparison with the synthetic antioxidant butylated hydroxy anisole (BHA). The chloroform, ethanol, petroleum ether extracts and BHA significantly lowered the autoxidation of linoleic acid when compared with that of control (p<0.01-p<0.0005). The% inhibition of autoxidative activity of the chloro-form, ethanol, petroleum ether extracts and BHA were 75.97%, 87.06%, 59.10% and 85.34%, respectively, after 14thday incubation.
SUBJECT HEADINGS:   Antioxidants. Plant Extracts. Medicine, Traditional. Plants, Medicinal.
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