Abstract
Eria tomentosa (Koen.) Hook. f. belonging to the family Orchidaceae is a medicinal plant which has been investigated for its medicinal efficacy. The present investigation was addressed by determining phytochemical analysis, antioxidant activity and anti-inflammatory activity of the studied species. The dried samples of leaf, bulb and root of E. tomentosa were extracted with hexane, dichloromethane (DCM), methanol and butanol fractions. Phytochemical analysis of secondary metabolites, viz. phlobatannins, saponins, tannins, terpenoids, steroids, glycosides, anthraquinone, quinine and coumarin properties, were screened out for its medicinal value. Among the three studied parts, root extract was found to have disease-resisting secondary metabolites. Antioxidant activity of crude extract of E. tomentosa was determined at four fractions of leaf, bulb and root extract, where leaf part was found to have the most potential. Butanol fraction of leaf revealed the highest scavenging activity which was 94.88% (at concentration 100 μg/ml). However, a notable percentage of antioxidant activity was 93.79%, found in butanol fraction of bulb (at concentration 100 μg/ml) and DCM fraction of root (at concentration 250 μg/ml). Anti-inflammatory activity was evaluated using heat-induced albumin denaturation assay. The highest anti-inflammatory activity (97.26%) was found in hexane fraction of bulb of Eria tomentosa against egg albumin denaturation. On the other hand, the least anti-inflammatory activity (72.45%) was found in butanol fraction of root. The present study concludes that the Eria tomentosa (Koen.) Hook. f. has good medicinal properties including antioxidant and anti-inflammatory activities.
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Acknowledgements
The authors gratefully acknowledge the Ministry of Education (MoE) Government of the People’s Republic of Bangladesh for the financial support under Grants for Advanced Research in Education project to conduct the research and the Department of Botany, University of Chittagong, for the logistic support.
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Akter, M.T., Huda, M.K., Hoque, M.M., Rahman, M. (2020). Phytochemical Analysis, Antioxidant and Anti-inflammatory Activity of Eria tomentosa (Koen.) Hook. f.. In: Khasim, S., Hegde, S., González-Arnao, M., Thammasiri, K. (eds) Orchid Biology: Recent Trends & Challenges . Springer, Singapore. https://doi.org/10.1007/978-981-32-9456-1_21
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