Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 22 for “"Phytochemical screening"”.
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Phytochemical screening and antibacterial testing of selected Namibian medicinal plants against laboratory and clinical bacteria that cause Diarrhoea
… screen selected plants for the presence of major phytochemical compound. Plant parts (bark, roots and twig) were collected from Kunene region and extracted using aqueous and organic solvents and screened for the presence of triterpenoids, saponins, flavonoids, steroids, coumarins, tannins and …
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Antibacterial, antioxidant and phytochemical investigation of Albizia Anthelmintica leaves, roots and stem bark
… The present study was designed to evaluate the phytochemical content, antibacterial and antioxidant activities of A. anthelmintica leaves, roots and stem bark ethanol extracts. Antibacterial activity was carried out by means of the agar disc diffusion method. The anti-oxidative activities of the …
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Phytochemical, antimicrobial and cytotoxicity evaluation of rhizome extracts of Hydnora Abyssinica from Acacia Nigrences host
Medicinal plants are a rich source of phytochemicals, and are used traditionally for treatment of many ailments, and thus are of great ethnomedicinal importance. This study presents work on phytochemical analysis, in vitro antimicrobial activity and cytotoxicity evaluation of medicinal plant …
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In vitro anti-platelet aggregation activity of the extracts of bulbine natalensis
… extract had the highest yield of 0.20%. Phytochemical screening revealed the presence of anthraquinones, cardiac glycosides, saponins, tannins, flavonoids and alkaloids. The hexane extract revealed the highest contents of total phenols (5.028 mg/g); flavonoid (3.293 mg/g) and …
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Characterisation and Screening of secondary metabolites from Commiphora viminea (Burtt Davy, Burseraceae) Engl. for antifungal properties against Candida auris
… medicinal and aromatic qualities; however, its phytochemical profile and biological activities remain poorly characterised. This study investigated the phytochemical composition, antioxidant capacity, antifungal potential, and cytotoxicity of C. viminea leaf, stem, and root extracts using …
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Investigation of insulin releasing and glucose lowering effects of extract of selected plants used in African traditional medicinal practice
… evaporator with methanol or water as solvent. Phytochemical screening, total flavonoids and total phenolics content was carried out. Effects of extracts on insulin secretion at various glucose concentrations, in the presence of established modulators of insulin secretion and in the absence of …
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Anti-aging potential of some freshwater microalgae extracts
… hexane, dichloromethane (DCM) and ethanol. The phytochemical screening of the extract was conducted using GC-MS and FTIR. The antioxidant activities of the microalgal extracts were estimated by various in vitro assays including the scavenging of 1.1-Diphenyl-2-picryl hydrazil (DPPH), 2.2- …
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Effect of the methanolic extract of Cassia abbreviata in the oxidative stress caused by overcrowding in indigenous chickens
… stress in chickens caused by overcrowding. Phytochemical screening of Cassia abbreviata revealed the presence of alkaloids, flavonoids, terpenoids, tannins and saponins. Methanolic stem extract showed strong scavenging of 2,2’-azino-bis-(3-ethlybenzothiozoline-6-sulphonic acid), …
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In vitro anti-platelet aggregation activity of the extracts of protorhus longifolia
… for the anti-platelet aggregation activity. Phytochemical screening of the plant material revealed the presence of various secondary metabolites (tannins, flavonoids, alkaloids and terpenoids). Crude extracts (obtained by sequential extraction of plant material with hexane, chloroform, ethyl …
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Efficacy of the aqueous root extract of phyllanthus muellerianus in alleviating anemia in rats
… of male albino rats and to determine its phytochemical profile. Thirty-six male albino rats in six groups were used for this study. The groups comprised 100 mg/kg, 200 mg/kg, and 400 mg/kg plant extract, a group on ranferon (drug used to treat anemia), a normal (non-anemic) group and a …
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Efficacy of the aqueous root extract of phyllanthus muellerianus in alleviating anemia in rats
… of male albino rats and to determine its phytochemical profile. Thirty-six male albino rats in six groups were used for this study. The groups comprised 100 mg/kg, 200 mg/kg, and 400 mg/kg plant extract, a group on ranferon (drug used to treat anemia), a normal (non-anemic) group and a …
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Efficacy of the aqueous root extract of phyllanthus muellerianus in alleviating anemia in rats
… of male albino rats and to determine its phytochemical profile. Thirty-six male albino rats in six groups were used for this study. The groups comprised 100 mg/kg, 200 mg/kg, and 400 mg/kg plant extract, a group on ranferon (drug used to treat anemia), a normal (non-anemic) group and a …
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Green synthesis of copper nanoparticles using Lannea discolor (Sond.) Engl. and evaluation of their biological efficacy
… of therapy as it contains an array of bioactive phytochemicals, is biologically compatible, and has been used to synthesize nanoparticles with advanced therapeutic potential. Lannea discolor, commonly known as “dikbas,” occurs in southern Africa and is extensively utilized as a traditional …
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Cytotoxicity and anti-mycobacterial activities of sclerocarya birrea and Dodonae viscosa anguistifolia against MTB strain
… (SBC, SBH, SLC. SLH, DBC, DBH, DLC, DLH). Phytochemical analysis was conducted on all extracts using thin layer chromatography (TLC), the profiling of metabolites was achieved with liquid chromatography-Mass spectrometry (LCMS) method. The antimycobacterial activity against M. smegmatis was …
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Investigating ethnopharmacology-based natural product leads for antimalarial drug discovery
… µg/ml for the methanolic extract. Qualitative phytochemical screening of both extracts revealed the presence of various bioactive compounds including tannins, flavonoids, saponins and cardiac glycosides amongst others in both the aqueous and methanolic extract of B. ferruginea. Anthocyanins …
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Evaluation of indigenous Namibian mushrooms and plants for antimalarial properties
… and determine the antiplasmodial activities, phytochemical profiles, active compounds and cytotoxicities of mushroom and plant extracts. The study involved an ethnobotanical survey of putative antimalarial mushrooms and plants. Preparation of mushroom and plant organic extracts; evaluation of …
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Antiplasmodial/Antipyretic activity of some Zulu medicinal plants
… malaria. Aim The study aims to determine the phytochemicals present in the plants, larvicidal, antioxidant, in vivo antipyretic and in vitro antiplasmodial activities as well as the cytotoxicity of the nine plants. The study also aims to isolate and purify the active compound in the most …
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Antimicrobial and antioxidant activity of crude extracts and fractions from stems and leaves of Tephrosia Lupinifolia
… of T. lupinifolia, but there are no reports on phytochemical and pharmacological studies conducted on the stems and leaves of the plant. The purpose of this study was to prepare and fractionate crude extracts from the leaves and stems of T. lupinifolia, and to evaluate their antioxidant as well …
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Synthesis, Characterization and Evaluation of Novel Treatment against Resistant Pathogenic Bacteria
… dichloromethane and chloroform. Preliminary phytochemical screening was done to identify different phytochemicals in the extracts and their functional groups were identified by Fourier Transform Infrared spectroscopy (FTIR). Extracts were further assessed for their total phenolic and …
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Nitrogen and carbon costs of growth and antioxidant production during acclimation to environmental stress in two species of gethyllis
Gethyllis multifolia L. Bolus and G. villosa Thunb. are winter-growing, summerblooming,deciduous and bulbous geophytes that grow naturally in the semi-arid succulent Karoo biome of South Africa. Both species grow under full sun conditions and have four distinctive growth phases: a winter (cold and …
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