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- W2619801821 abstract "Context: The plethora of ethnomedicinal applications of Tamarindus indica Linn. (Leguminosae), tamarind, includes treatment of human and livestock ailments; preparations are recognized antipyretics in fevers, laxatives and carminatives. African folklore has various applications of tamarind. However, in Nyasaland, domestic fowl are fed with preparations for prophylactic properties.Objectives: The objective of this study is to evaluate the antiviral properties of T. indica extract.Materials and methods: Tamarindus indica stem bark was extracted through ethanol maceration over 24 h, and the crude extract was fractionated by gravity-propelled column chromatography. Newcastle disease virus (NDV) inhibitory activity of extract and fractions were evaluated in vivo using 10-d-old embryonated chicken egg (ECE) as the medium for virus cultivation and antivirus assay. About 240 ECE were grouped into eight (three controls and five experimental) and, 200 μL of the extract and fractions respectively inoculated into NDV pre-infected eggs and incubated at 37 °C. Allantoic fluid was harvested 5 d post-virus infection and assayed for haemagglutination (HA).Results: Anti-NDV assessment showed 62.5 mg/mL of crude extract and fractions: TiA, TiC and TiD to yield a HA titre of 1:128 each, while TiB showed 1:64 HA titre. At 125 mg/mL, a titre of 1:16 was recorded against TiB and TiD and, 1:8 against TiA. Similarly, crude extract and TiC, each recorded 1:4 HA titre. However, the minimum concentrations of extract and fraction for virus inactivation were 0.24 mg/mL and 0.49 mg/mL, respectively.Conclusion: The antiviral activity shown by T. indica portends novel antiviral drugs and, perhaps, as scaffold for new drugs." @default.
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- W2619801821 date "2017-01-01" @default.
- W2619801821 modified "2023-09-26" @default.
- W2619801821 title "Ethanol extract and chromatographic fractions of <i>Tamarindus indica</i> stem bark inhibits Newcastle disease virus replication" @default.
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- W2619801821 doi "https://doi.org/10.1080/13880209.2017.1331364" @default.
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