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Chemical components and antioxidant activities of methanol extract of <em>Syzygium polycephalum </em>Miq. stem bark (Myrtaceae)

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Title Statement Chemical components and antioxidant activities of methanol extract of <em>Syzygium polycephalum </em>Miq. stem bark (Myrtaceae)
 
Added Entry - Uncontrolled Name Tukiran; Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Surabaya, Surabaya, Indonesia
Wardana, Andika Pramudya; Department of Chemistry, Faculty of Science and Technology, Airlangga University, Surabaya, Indonesia
Hidajati, Nurul ; Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Surabaya, Surabaya, Indonesia
Shimizu, Kuniyoshi ; Department of Forest and Forest Products Sciences, Faculty of Agriculture, Kyushu University, Fukuoka, Japan
Directorate of Research and Community Service, the Ministry of Research, Technology and High Education, Indonesia
 
Uncontrolled Index Term value added products and utilization of plants (Natural Product Chemistry)
Antioxidant; Gallic acid; Myrtaceae; Pinostrobin; Syzygium polycephalum; 3,4,3’-tri-O-methylellagic acid; 3,3’-di-O-methylellagic acid.
 
Summary, etc. <p style="text-align: justify;">This study aimed to reveal chemical components and screen antioxidant activity of methanolic extract of <em>Syzygium polycephalum</em> stem bark. The chemical components were isolated by using column chromatographic techniques and determined by spectroscopic methods (UV-Vis, FTIR, MS, and NMR) and comparison with literature data, in which the antioxidant activity was performed using 2,2’-diphenyl-1-picrylhydrazyl (DPPH). The present investigation resulted in four compounds involving gallic acid, pinostrobin, 3,4,3’-tri-<em>O</em>-methylellagic acid, and 3,3’-di-<em>O</em>-methylellagic acid. The four compounds were all in the form of phenolic compounds found from the extract whereas 3,4,3’-tri-<em>O</em>-methylellagic acid and 3,3’-di-<em>O</em>-methylellagic acid were ellagic acid derivatives. The methanolic extract, the four compounds, and vitamin C (as positive control) showed antioxidant activity against DPPH with the IC<sub>50</sub> value of 99.9; 10.0; 183.2; 72.1; 63.3; and 13.9 µg/mL, respectively. The antioxidant activity of gallic acid was more active than that of vitamin C. The present study confirms that <em>Syzygium polycephalum</em>is rich in phenolic compounds and natural antioxidants.</p>
 
Publication, Distribution, Etc. Indian Journal of Natural Products and Resources (IJNPR) [Formerly Natural Product Radiance (NPR)]
2020-01-01 10:58:09
 
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http://op.niscair.res.in/index.php/IJNPR/article/view/20797
 
Data Source Entry Indian Journal of Natural Products and Resources (IJNPR) [Formerly Natural Product Radiance (NPR)]; ##issue.vol## 10, ##issue.no## 2 (2019): June, 2019
 
Language Note en
 
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