Seasonal Variation of Phytochemicals in Four Selected Medicinal Plants
نویسندگان
چکیده
Pharmacognosy Research,2021,13,4,218-226.DOI:10.5530/pres.13.4.14Published:October 2021Type:Original ArticleAuthors:Bonface Mwamatope, David Tembo, Elizabeth Kampira, Cecilia Maliwichi-Nyirenda, and Victoria Ndolo Author(s) affiliations:Bonface Mwamatope1, Tembo2,*, Kampira3, Maliwichi-Nyirenda4, Ndolo5 1Biomedical Sciences Department, College of Medicine, University Malawi, Blantyre, MALAWI. 2Physics Biochemical The Polytechnic, 3Medical Laboratory Malawi. 4Research Support Centre, 5Department Human Ecology, Faculty Science, Chancellor College, Abstract:Background: study aimed at assessing total alkaloids content (TAC), flavonoids (TFC), phenolic (TPC), antioxidant activity (AA) predominant individual compounds in methanol extracts M. oleifera, S.singueana, M.azedarach leaves stem barks L. discolor collected during different seasons the year. Materials Methods: TPC, TFC TAC were analyzed using Folin Ciocalteau assay, aluminum chloride assay bromocresol green respectively. 2,2-diphenyl-1-picrylhydrazyl (DPPH) ferric reducing power (FRAP) techniques used to analyse AA. Phenolic compounds; Vanillic acid, (+)-catechin, quercetin, rutin, sinapic 2,4-hydroxybenzoic acid ferulic high performance liquid chromatography diode array detector (HPLC - DAD). Results: Barks discolour exhibited levels TFC, AA hot-dry season (summer) as compared S. singueana, oleifera azedarach which showed significantly (p< 0.05) higher hot-wet (rainy). Levels influenced by seasonal variations correlated with Profiles all not similar terms chemical composition concentration seasons. Sinapic singueana while oleifera. Conclusion: phytochemical constituents medicinal plants are subject turn influence optimum harvesting. Keywords:Alkaloids, Antioxidant activity, Flavonoids, Medicinal plants, compounds, Seasonal variationsView:PDF (984.49 KB)
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ژورنال
عنوان ژورنال: Pharmacognosy Research
سال: 2021
ISSN: ['0974-8490', '0976-4836']
DOI: https://doi.org/10.5530/pres.13.4.14