Abstract
Tannins are high-molecular-weight and water-soluble naturally occurring polyphenols that are widely distributed in many species of plants at higher levels. Syzygium samarangense (Blume) Merr. & L.M. Perry is a famous deciduous tree belonging to Myrtaceae family, which is being cultivated in India mainly for its edible fruits. It is also well known by other names, e.g. java apple and water apple. Based on literature survey, we found that S. samarangense is having a rich content of tannins. In this study, we have isolated two compounds, i.e. methyl gallate and 3-methoxy ellagic acid, from acetone extract of stem bark of S. samarangense by using two different methods; and further, these fractions were individually separated and purified by using RP-HPLC. The structures of these purified compounds were confirmed by using different spectral techniques.
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Acknowledgements
We are very much thankful to all the faculty members of the Department of Chemistry and to the administration of Acharya Nagarjuna University, for their constant encouragement. P. Asha Bhanu is very much thankful to University Grants Commission for sanctioning her Rajiv Gandhi National Fellowship for the year 2015–2017.
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Bhanu, P.A., Mohan Krishna Reddy, M., Sadhana Reddy, N., Kesava Rao, B. (2020). Isolation and Characterization of Pharmacologically Active Tannins from Stem Bark of Syzygium samarangense. In: Khasim, S.M., Long, C., Thammasiri, K., Lutken, H. (eds) Medicinal Plants: Biodiversity, Sustainable Utilization and Conservation. Springer, Singapore. https://doi.org/10.1007/978-981-15-1636-8_32
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