COMPARATIVE PROXIMATE, PHYTOCHEMICAL AND MINERAL CONTENTS OF FREEZE-DRIED AND AQUEOUS EXTRACTS OF VERNONIA AMYGDALINA DEL. LEAVES AND GARCINIA KOLA HECKEL SEEDS

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dc.contributor.authorBolajoko, E.B.
dc.contributor.authorOnyeaghala, A.A.
dc.contributor.authorAkinosun, O.M.
dc.contributor.authorAttah, A.F.
dc.contributor.authorMoody, J.O.
dc.contributor.authorKhine, A.A.
dc.date.accessioned2021-12-14T09:43:50Z
dc.date.available2021-12-14T09:43:50Z
dc.date.issued2020
dc.description.abstractMedicinal plants have been used for centuries to meet primary healthcare needs. This study compared proximate, phytochemicals, micronutrient and toxic metal concentrations in freeze-dried and aqueous extract samples of Vernonia amygdalina (VA) leaves and Garcinia kola (GK) seeds. Fifty gram of freeze-dried samples and 50 mL of freshly prepared aqueous extracts of VA and GK each were used for the analysis. Proximate compositions of VA and GK were assessed using standard analytical methods. Phytochemicals were quantified spectrophotometrically, vitamins by High Performance Liquid Chromatography (HPLC) and mineral compositions by Atomic Absorption Spectrophotometry (AAS). Proximate compositions were significantly elevated in freeze-dried samples of VA and GK compared with aqueous extracts. Phytochemicals: tannins, polyphenols and flavonoids, were higher in freeze-dried samples of VA and GK compared to aqueous extracts (p<0.05). Terpenoids and alkaloids were only observed in VA (p<0.05) but not detected in GK. Similarly, micronutrients including manganese, iron, copper, zinc, vitamins A, C and E were more concentrated in freeze-dried samples compared to aqueous extracts (p<0.05); while, toxic metals such as lead and cadmium were not detected in both freeze-dried and aqueous extracts of VA and GK. The findings suggested that freeze-dried samples of Vernonia amygdalina leaves and Garcinia kola seeds could possess good medicinal and therapeutic properties.en_US
dc.identifier.issnE- ISSN: 2384-6836
dc.identifier.issnISSN: 2315-537X
dc.identifier.urihttps://uilspace.unilorin.edu.ng/handle/20.500.12484/7163
dc.language.isoenen_US
dc.publisherInternational Journal of Herbs and Pharmacological Researchen_US
dc.relation.ispartofseriesVol. 9;Num. 1
dc.subjectFreeze-dried samplesen_US
dc.subjectAqueous extractsen_US
dc.subjectMicronutrientsen_US
dc.subjectPhytochemicalsen_US
dc.subjectProximateen_US
dc.titleCOMPARATIVE PROXIMATE, PHYTOCHEMICAL AND MINERAL CONTENTS OF FREEZE-DRIED AND AQUEOUS EXTRACTS OF VERNONIA AMYGDALINA DEL. LEAVES AND GARCINIA KOLA HECKEL SEEDSen_US
dc.typeArticleen_US

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