J N Eloff
Dados Biográficos
| ID | 5426420 |
|---|---|
| NOME | J N Eloff |
| PRENOMES | J N |
| SOBRENOME | Eloff |
| ASSINATURA | ELOFF J N |
| AFILIAÇÕES | University of Pretoria |
| ORCID | 0000-0003-1494-9842 |
| VERIFICADO | Sim |
| TOTAL DE OBRAS | 41 |
| TOTAL DE CITAÇÕES | 0 |
| TOTAL COMO AUTOR | 41 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 1998 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2022 |
| ÍNDICE H | 0 |
Lichens
Anthelmintic, antimycobacterial, antifungal, larvicidal and cytotoxic activities of acetone leaf extracts, fractions and isolated compounds from Ptaeroxylon obliquum (Rutaceae)
Phytochemical Screening, Antimicrobial and Cytotoxicity Studies of Ethanol Leaf Extract of Aphania Senegalensis (Sapindaceae)
Background: Aphania senegalensis (Sapindaceae) is commonly used in Senegalese traditional medicine to treat pain, inflammation, asthenia, bacterial and fungal infections. The aim of this study was to determine the type of phytochemical constituents present in the ethanol leaf extract and its antimicrobial activity against selected bacterial and fungal pathogens. Materials and Methods: The ethanol leaf extract of A. senegalensis was evaluated for …
The Use of Plants to Protect Plants and Food Against Fungal Pathogens
Background: Plant fungal pathogens play a crucial role in the profitability, quality and quantity of plant production. These phytopathogens are persistent in avoiding plant defences causing diseases and quality losses around the world that amount to billions of US dollars annually. To control the scourge of plant fungal diseases, farmers have used fungicides to manage the damage of plant pathogenic fungi. Drawbacks such as development of resistan…
Antioxidant and Antifungal Activity of Selected Medicinal Plant Extracts Against Phytopathogenic Fungi
Background: Medicinal plants are used by many ethnic groups as a source of medicine for the treatment of various ailments in both humans and domestic animals. These plants produce secondary metabolites that have antimicrobial properties, thus screening of medicinal plants provide another alternative for producing chemical fungicides that are relatively non-toxic and cost-effective. Materials and methods: Leaf extracts of selected South African pl…
Nitric Oxide Inhibitory Activity of Strychnos Spinosa (Loganiaceae) Leaf Extracts and Fractions
Background: The study was aimed at determining the anti-inflammatory activity of fractions and extracts obtained from Strychnos spinosa leaves on a mediator of inflammation nitric oxide (NO). Materials and Methods: Leaves were extracted with acetone and separated into fractions with different polarities by solventsolvent fractionation. The Griess assay was used to determine the nitric oxide (NO) inhibitory activity. Cellular toxicity was determin…
In vitro inhibition of Plasmodium falciparum early and late stage gametocyte viability by extracts from eight traditionally used South African plant species
This study shows the potential transmission blocking activity of extracts from selected South African medicinal plants and substantiates their traditional use in malaria control that broadly encompasses prevention, treatment and transmission blocking. Further studies are needed to isolate and identify the active principles from the crude extracts of A. afra, T. emetica and T. floribunda, as well as to examine their efficacy towards blocking paras…
Antimycobacterial, Antioxidant and Cytotoxic Activities of Essential Oil of Gall of Pistacia Atlantica Desf. From Algeria
Background: The aim of this study was to assess the antimycobacterial, antioxidant and the cytotoxic activities of the essential oil from the gall part of Pistacia atlantica Desf from Algeria. Materials and Methods: The antimycobacterial activity was evaluated by the broth microdilution method against three species of mycobacteria: Mycobacterium smegmatis, Mycobacterium aurum and Mycobacterium fortuitum. Antioxidant activity was determined using …
Antimycobacterial, antioxidant and cytotoxic activities of essential oil of gall of Pistacia atlantica Desf. From Algeria
Background: The aim of this study was to assess the antimycobacterial, antioxidant and the cytotoxic activities of the essential oil from the gall part of Pistacia atlantica Desf from Algeria.Materials and Methods: The antimycobacterial activity was evaluated by the broth microdilution method against three species of mycobacteria: Mycobacterium smegmatis, Mycobacterium aurum and Mycobacterium fortuitum. Antioxidant activity was determined using f…
Anti-inflammatory, anticholinesterase and antioxidant activity of leaf extracts of twelve plants used traditionally to alleviate pain and inflammation in South Africa
The traditional use of plants to manage candidiasis and related infections in Venda, South Africa
Antibacterial activities of the methanol extracts, fractions and compounds from Fagara tessmannii
Polarity of extracts and fractions of four Combretum (Combretaceae) species used to treat infections and gastrointestinal disorders in southern African traditional medicine has a major effect on diffe…
The 15-lipoxygenase inhibitory, antioxidant, antimycobacterial activity and cytotoxicity of fourteen ethnomedicinally used African spices and culinary herbs
Isolation of seselin from Clausena anisata (Rutaceae) leaves and its effects on the feeding and development of Lucilia cuprina larvae may explain its use in ethnoveterinary medicine
Antifungal activity and cytotoxicity of isolated compounds from leaves of Breonadia salicina
Extracts of four plant species used traditionally to treat myiasis influence pupation rate, pupal mass and adult blowfly emergence of Lucilia cuprina and Chrysomya marginalis (Diptera
The antimicrobial, antioxidative, anti-inflammatory activity and cytotoxicity of different fractions of four South African Bauhinia species used traditionally to treat diarrhoea
A Simplified but Effective Method for the Quality Control of Medicinal Plants by Planar Chromatography
Three of the factors limiting the rational use of herbal medicine are uncertainty on effectivity, uncertainty on safety and variation in quality of the product. Because many herbal medicines have been used over centuries by indigenous peoples, the safety and effectivity is frequently not such a big concern. With more people collecting and distributing herbal medicine, the offered product is however, frequently not what the label indicates either …
A Simplified but Effective Method for the Quality Control of Medicinal Plants by Planar Chromatography
Three of the factors limiting the rational use of herbal medicine are uncertainty on effectivity, uncertainty on safety and variation in quality of the product. Because many herbal medicines have been used over centuries by indigenous peoples, the safety and effectivity is frequently not such a big concern. With more people collecting and distributing herbal medicine, the offered product is however, frequently not what the label indicates either …
In Vitro Anthelmintic Effect of Anogeissus Leiocarpus (Dc.) Guill. & Perr. Leaf Extracts and Fractions on Developmental Stages of Haemonchus Contortus
The anthelmintic effect of acetone leaf extract and fractions of Anogeissus leiocarpus was investigated to determine the relative efficacy of the components as anthelmintic against Haemonchus contortus (Rudolphi). The fractions were obtained by solvent-solvent group separation of the leaf extract. The fractions were evaluated for ovicidal and larvicidal activity by egg hatch inhibition assay and larval development viability assay. Best-fit LC(50)…
Antibacterial activity of two biflavonoids from Garcinia livingstonei leaves against Mycobacterium smegmatis
Detection of antimicrobial compounds by bioautography of different extracts of leaves of selected South African tree species
The hexane, acetone, dichloromethane and methanol extracts of Combretum vendae A.E. van Wyk (Combretaceae), Commiphora harveyi (Engl.) Engl. (Burseraceae), Khaya anthotheca (Welm.) C.DC (Meliaceae), Kirkia wilmsii Engl. (Kirkiaceae), Loxostylis alata A. Spreng. ex Rchb. (Anacardiaceae), Ochna natalitia (Meisn.) Walp. (Ochnaceae) and Protorhus longifolia (Bernh. Ex C. Krauss) Engl. (Anacardiaceae) were screened for their antimicrobial activity. Th…
Evaluation of the antioxidant, antibacterial, and antiproliferative activities of the acetone extract of the roots of Senna italica (fabaceae)
Senna italica, a member of the Fabaceae family (subfamily Caesalpinaceae), is widely used traditionally to treat a number of disease conditions, such as sexually transmitted diseases and some forms of intestinal complications. The roots of Senna italica were collected from Zebediela subregion, Limpopo province (S.A), powdered and extracted with acetone by cold/shaking extraction method. The phytochemical composition of the extract was determined …
Four pentacyclic triterpenoids with antifungal and antibacterial activity from Curtisia dentata (Burm.f) C.A. Sm. leaves
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A Sensitive and Quick Microplate Method to Determine the Minimal Inhibitory Concentration of Plant Extracts for Bacteria
Agar diffusion techniques are used widely to assay plant extracts for antimicrobial activity, but there are problems associated with this technique. A micro-dilution technique was developed using 96-well microplates and tetrazolium salts to indicate bacterial growth. p-Iodonitrotetrazolium violet [0.2 mg/ml] gave better results than tetrazolium red or thiazolyl blue. The method is quick, worked well with Staphylococcus aureus, Enterococcus faecal…
The preliminary isolation of several antibacterial compounds from Combretum erythrophyllum (Combretaceae)
Which extractant should be used for the screening and isolation of antimicrobial components from plants
It is possible to use herbarium specimens to screen for antibacterial components in some plants
An investigation on the biological activity of Combretum species
Strelitzia 9. Cape Plants. A Conspectus of the Cape Flora of South Africa
Biological activity of five antibacterial flavonoids from Combretum erythrophyllum (Combretaceae)
Antifungal activities of six South African Terminalia species (Combretaceae)
Isolation of two flavonoids from Bauhinia Monandra (Kurz) leaves and their antioxidative effects
Bauhinia monandra (Kurz), traditionally use in the treatment of diabetes with established significant anti-diabetic activity was investigated for its antioxidant constituents since the activity demonstrated can be linked to the presence of antioxidant compounds. Bioassay directed fractionation of the ethyl acetate soluble leaves extract has led to isolation of two active compounds identified as: Quercetin-3-O-rutinoside (1) and Quercetin (2). The…
Potential of neuroprotective antioxidant-based therapeutics from Peltophorum africanum sond.(fabaceae)
There is ample scientific and empirical evidence supporting the use of plant-derived antioxidants for the control of neurodegenerative disorders. Antioxidants may have neuroprotective (preventing apoptosis) and neuroregenerative roles, by reducing or reversing cellular damage and by slowing progression of neuronal cell loss. Although demand for phytotherapeutic agents is growing, there is need for their scientific validation before plant-derived …
Antimicrobial and anti-inflammatory activity of four known and one new triterpenoid from Combretum imberbe (Combretaceae)
Evaluation of Athrixia bush tea for cytotoxicity, antioxidant activity, caffeine content and presence of pyrrolizidine alkaloids
Four pentacyclic triterpenoids with antifungal and antibacterial activity from Curtisia dentata (Burm.f) C.A. Sm. leaves
Screening Of Twenty-Four South African Combretum And Six Terminalia Species (Combretaceae) For Antioxidant Activities
The dried leaves of Combretum and Terminalia species (Combretaceae) were extracted with acetone, hexane, dichloromethane and methanol. Thin layer chromatography (TLC) plates were developed under saturated conditions and sprayed with 0.2% 2,2-diphenyl-1-picryl hydrazyl (DPPH) in methanol for antioxidant screening. Visualization of separated bands exhibiting antioxidant activities enabled the localization and the subsequent identification of the po…
Ethnoveterinary use of southern African plants and scientific evaluation of their medicinal properties
The biological activity and chemistry of the southern African Combretaceae
The potential of South African plants against Mycobacterium infections
Detection of antimicrobial compounds by bioautography of different extracts of leaves of selected South African tree species
The hexane, acetone, dichloromethane and methanol extracts of Combretum vendae A.E. van Wyk (Combretaceae), Commiphora harveyi (Engl.) Engl. (Burseraceae), Khaya anthotheca (Welm.) C.DC (Meliaceae), Kirkia wilmsii Engl. (Kirkiaceae), Loxostylis alata A. Spreng. ex Rchb. (Anacardiaceae), Ochna natalitia (Meisn.) Walp. (Ochnaceae) and Protorhus longifolia (Bernh. Ex C. Krauss) Engl. (Anacardiaceae) were screened for their antimicrobial activity. Th…
Evaluation of the antioxidant, antibacterial, and antiproliferative activities of the acetone extract of the roots of Senna italica (fabaceae)
Senna italica, a member of the Fabaceae family (subfamily Caesalpinaceae), is widely used traditionally to treat a number of disease conditions, such as sexually transmitted diseases and some forms of intestinal complications. The roots of Senna italica were collected from Zebediela subregion, Limpopo province (S.A), powdered and extracted with acetone by cold/shaking extraction method. The phytochemical composition of the extract was determined …
A Simplified but Effective Method for the Quality Control of Medicinal Plants by Planar Chromatography
Three of the factors limiting the rational use of herbal medicine are uncertainty on effectivity, uncertainty on safety and variation in quality of the product. Because many herbal medicines have been used over centuries by indigenous peoples, the safety and effectivity is frequently not such a big concern. With more people collecting and distributing herbal medicine, the offered product is however, frequently not what the label indicates either …
A Simplified but Effective Method for the Quality Control of Medicinal Plants by Planar Chromatography
Three of the factors limiting the rational use of herbal medicine are uncertainty on effectivity, uncertainty on safety and variation in quality of the product. Because many herbal medicines have been used over centuries by indigenous peoples, the safety and effectivity is frequently not such a big concern. With more people collecting and distributing herbal medicine, the offered product is however, frequently not what the label indicates either …
In Vitro Anthelmintic Effect of Anogeissus Leiocarpus (Dc.) Guill. & Perr. Leaf Extracts and Fractions on Developmental Stages of Haemonchus Contortus
The anthelmintic effect of acetone leaf extract and fractions of Anogeissus leiocarpus was investigated to determine the relative efficacy of the components as anthelmintic against Haemonchus contortus (Rudolphi). The fractions were obtained by solvent-solvent group separation of the leaf extract. The fractions were evaluated for ovicidal and larvicidal activity by egg hatch inhibition assay and larval development viability assay. Best-fit LC(50)…
Antibacterial activity of two biflavonoids from Garcinia livingstonei leaves against Mycobacterium smegmatis
Extracts of four plant species used traditionally to treat myiasis influence pupation rate, pupal mass and adult blowfly emergence of Lucilia cuprina and Chrysomya marginalis (Diptera
The antimicrobial, antioxidative, anti-inflammatory activity and cytotoxicity of different fractions of four South African Bauhinia species used traditionally to treat diarrhoea
Biology (36 obras) · Traditional medicine (35 obras) · Medicine (34 obras) · Chemistry (24 obras) · Essential Oils and Antimicrobial Activity (21 obras) · Botany (20 obras) · Ethnobotanical and Medicinal Plants Studies (19 obras) · Microbiology (18 obras) · Antimicrobial (16 obras) · Biochemistry (16 obras)