scholarly journals Antimicrobial Efficacy of Vitellaria paradoxa fractions and compounds on some wood Fungi and Bacteria

2021 ◽  
Vol 38 (1) ◽  
pp. 1-13
Author(s):  
D.O. Ekhuemelo ◽  
J.V. Anyam ◽  
C. Ekhuemelo
Keyword(s):  
Ethyl Acetate ◽  
Spectroscopic Analysis ◽  
Sclerotium Rolfsii ◽  
Stem Bark ◽  
Vitellaria Paradoxa ◽  
Minimum Fungicidal Concentration ◽  
Potential Source ◽  
Zones Of Inhibition ◽  
Serpula Lacrymans ◽  
Rhizopus Sp

This study examined antifungal efficacy of Vitellaria paradoxa fractions and compounds in the control of some wood degrading fungi. Stem bark and heartwood parts of Vitellaria paradoxa were collected, dried, pulverised and macerated sequentially in n- hexane, methanol and ethyl acetate solvents. The mixtures were filtered, evaporated and the dried samples were mixed and run over silica gel in column chromatography with a mixture of n -hexane and ethyl acetate solvents to obtain fractions. The fractions collected were evaporated and those with white needles were subjected to Magnetic Resonance (NMR) spectroscopic analysis. Spinasterol was isolated and characterised from the heartwood fraction while the stem bark fractions were fatty. Vitellaria paradoxa fractions were active against Serpula lacrymans, Sclerotium rolfsii, Aspergillus fumigatus, Fomitopsis pinicoca, Phaeolus schweinitzii, Rhizopus sp., Coniophora puteana, Gloeophyllum sepiarium, and Fibroporia vaillantii at zones of inhibition (ZOI) of 18 mm - 24 mm. Although the antibiotics were active (25 – 31 mm), they were found inactive against the Fomitopsis pinicoca fungus which was sensitive to all the V. paradoxa fractions at zones of inhibition of 18 - 24 mm. The minimum inhibitory concentrations (MIC) of the V. paradoxa fractions were active at 50 μg/mL against all test fungi. At minimum fungicidal concentration (MFC) of between 50 - 200 μg/mL, all the test fungi were killed. Based on the ZOI, MIC and MFC, the V. paradoxa stem bark heartwood fractions have been proven to be very efficient in inhibiting the growth of test wood rot fungi; hence the species could be explored as a potential source of bioactive fungicides.

scholarly journals Preliminary Phytochemical Screening and Thin Layer Chromatography Analysis of Stem Bark Extracts of African Mistletoe Parasitic on Vitellaria paradoxa, Piliostigma thonningii and Combretum fragrans

2019 ◽  
pp. 1-6
Author(s):  
T. Agber Cyprian ◽  
Shaakaa Sewuese ◽  
Linus U. Akacha
Keyword(s):  
Thin Layer ◽  
Ethyl Acetate ◽  
Thin Layer Chromatography ◽  
Heart Diseases ◽  
Stem Bark ◽  
Phytochemical Screening ◽  
Vitellaria Paradoxa ◽  
Chromatography Analysis ◽  
Plant Hosts ◽  
Layer Chromatography

Aim: Mistletoes are highly utilized in traditional medicine to treat different kinds of diseases such as heart diseases, diabetes and malaria, among others. The chemistry of African mistletoe is not sufficiently documented. This paper is therefore, aimed at determining the phytochemicals present in the crude extracts of mistletoe parasitic on plants that are commonly seen as hosts. Study Design: This study was designed to compare the phytochemical profiles of mistletoe stem barks obtained from different plant hosts. Place and Duration of Study: Department of Chemistry, University of Agriculture, Makurdi, Benue State Nigeria, between August and September, 2018.   Methodology: Powdered stem bark of mistletoe was extracted successively with hexane, ethyl acetate and methanol. Preliminary phytochemical screening was carried out on the extracts. Thin layer chromatography (TLC) was carried out on silica gel precoated plates in 9:1 (hexane/ethyl acetate), 1:1 (hexane/ethyl acetate), and 7:3 (ethyl acetate/methanol) mobile phases for hexane, ethyl acetate and methanol extracts respectively. Results: The study revealed the presence of secondary metabolites such as alkaloids, flavonoids, tannins/phenols, cardiac glycosides, steroids and triterpenoids. It was evident from TLC analysis that mistletoes from various plant hosts contain similar chemical profile. Conclusion: We therefore debunk the claim by some herbalists that medicinal values of mistletoes vary due to host plant. This is the first time a study of this kind is reported on mistletoe parasitic on Vitellaria paradoxa Pilostigma thonningii, Combretum fragrans.

scholarly journals Comparative study on the antimicrobial activity of partitioned fractions of the stem-bark of ceiba pentandra (bombacaceae)

2015 ◽  
Vol 05 (04) ◽  
pp. 004-008
Author(s):  
Njinga N. S. ◽  
Sule M. I. ◽  
Pateh U. U. ◽  
Hassan H. S. ◽  
Ache R. N. ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Ethyl Acetate ◽  
Wide Spectrum ◽  
Ethyl Acetate Fraction ◽  
Stem Bark ◽  
Salmonella Typhi ◽  
Klebsiella Pneumonia ◽  
Butanol Extract ◽  
Ceiba Pentandra ◽  
Zones Of Inhibition

AbstractDue to the emergence of more and more drug resistance bacteria and the reported antibacterial activity of Ceiba pentandra, the antimicrobial activity of the partitioned ethyl-acetate and n-butanol fractions of the stem-bark of this plant were carried out on the following clinical isolates: Staphylococcus aureus; Streptococcus pyrogenes; corynebacterium ulcereans; Escherichia coli; Salmonella typhi; Shigella dysenterea; Enterococcus aerogenes; Pseudomonas aeruginosa; klebsiella pneumonia and the fungi Trichophytom rubrum, Microsporum sp., Aspergillus fumigatus and Aspergillus niger. Agar diffusion and broth delusion methods were used in this study. The ethyl acetate fraction showed wide spectrum antibacteria activity (with zones of inhibition between 27mm and 37mm) while the n-butanol extract showed activity only against the gram negative bacteria (zones of inhibition between 20mm and 21mm). The MIC ranged from 0.65 to 2.5 mg/ml and 2.5 to 5 mg/ml and MBC ranged from 2.5 mg/ml and 5 – 10 mg/ml for the ethylacetate and n-butanol respectively. Both fractions showed no activity against the fungi used in this study. The preliminary phytochemistry of the ethyl acetate showed the presence of only flavonoid and this may explain the activity against all the bacteria. The n-butanol showed the presence of carbohydrates, saponins, tannins and cardiac glycoside and the absence of flavonoid and alkaloids. This study justifies the use of this plant in herbal medicine.

scholarly journals Antifungal Activities of Azardirachta indica Crude Extracts and Fractions against Strain 1161, P37005 and RM1000

2020 ◽  
pp. 63-78
Author(s):  
A. D. M. Owoyale ◽  
M. Galadimma ◽  
S. Y. Daniyan ◽  
N. Adabara
Keyword(s):  
Ethyl Acetate ◽  
Crude Extract ◽  
Human Beings ◽  
Antifungal Activities ◽  
Minimum Fungicidal Concentration ◽  
A Value ◽  
Crude Extracts ◽  
Successive Extraction ◽  
Zones Of Inhibition ◽  
Common Illnesses

Azardirachta indica (neem) has served as an alternative medicine in the treatment of some common illnesses that have being associated to man. Azardirachta indica have proven effectively against certain fungi species that can infect human beings and cause disease. This study was aimed at determining the antifungal activities of Azardirachta indica crude extracts and fractions against certain Candida albicans strains: P37005, RM1000 and Strain1161. The reflux method was used for successive extraction of Azardirachta indica leaves which was done by three solvents namely: n- hexane, ethyl acetate and methanol. The leaves of Azardirachta indica was assayed for its phytochemicals components which was determined quantitatively. However, the various strains were subjected to the crude extracts of Azardirachta indica at a varying concentration of 40, 60, 80 and 100 mg/ml. The activity of n- hexane and methanol crude extracts had higher zones of inhibition than that of ethyl acetate crude extracts. The n- hexane crude extract showed a minimum inhibitory concentrations (MIC) and minimum fungicidal concentration (MFC) value of 12.5 mg/ml and 50 mg/ml respectively against the tested strain of P37005(Isolate B4). The value of 6.25 mg/ml and 50 mg/ml were also observed for the n- hexane crude extract against strain RM 1000(Isolate B2). Whereas, the methanol crude extract presented a value of 6.25 mg/ml and 100mg/ml respectively against strain RM1000(Isolate B2). More so, the antifungal activities of the fractions were determined at a concentration of 5mg/ml and 10 mg/ml which showed inhibition for all the strains. The n-hexane fraction F3 of Azardirachta indica had an MIC and MFC value of 12.5 mg/ml and 25 mg/ml against P37005(IsolateB4). The value for the methanol fractions(F6) of Azardirachta indica against strain 1161(Isolate S5) was 3.125 mg/ml and 6.25 mg/ml. It is obvious from this study that the antifungal activities of the crudes and fractions used were less in activity compared to the standard antibiotics(fluconazole).

scholarly journals CYTOTOXIC BIOACTIVE COMPOUNDS FROM CALOTROPIS GIGANTEA STEM BARK

2016 ◽  
Vol 8 (9) ◽  
pp. 111
Author(s):  
Kartini Hasballah ◽  
Murniana . ◽  
Erya . ◽  
Ardian .
Keyword(s):  
Ethyl Acetate ◽  
Cytotoxic Activity ◽  
Ethyl Acetate Extract ◽  
Leukemia Cell ◽  
Stem Bark ◽  
Hexane Extract ◽  
Leukemia Cell Line ◽  
Calotropis Gigantea ◽  
Murine Leukemia Cell ◽  
Main Components

<p><strong>Objective: </strong>The present study deals with the cytotoxic activity of n-hexane and ethyl acetate extracts of <em>Calotropis gigantea</em> L. stem bark and its fractions such as A, B, C, D and E fractions on murine leukemia cell line P388.</p><p><strong>Methods: </strong>The crude extracts of <em>C. gigantea</em> stem bark were prepared using n-hexane and ethyl acetate solvents. The plant extracts were subjected to vacuum liquid chromatography followed by TLC. According to the similarity of stain patterns, the fractions were combined. The extracts and its combined fractions were then subjected for the phytochemical test. Cytotoxic activity of those extracts and its combined fractions were tested using MTT assay. Fraction D was subjected to gravity column chromatography followed by TLC. Then, fractions A, B, and D2 were crystallized and subjected to GC-MS.</p><p><strong>Results: </strong>The qualitative screening of n-hexane extract of <em>Calotropis gigantea</em> L. stem bark for secondary metabolites showed the presence of terpenoid, flavonoids, phenolics and coumarins. While the ethyl acetate extract contained phenolics, steroids, flavonoids, saponins and coumarins compounds. IC<sub>50 </sub>values for n-hexane extract and E fraction are 76.29 µg/ml and 18.48 µg/ml, respectively. In the ethyl acetate extract and C fraction obtained IC<sub>50</sub> values 57.05 µg/ml and 52.58 µg/ml.</p><p><strong>Conclusion: </strong>Cytotoxic activity from E fraction of n-hexane extract of <em>C. gigantea</em> stem bark is the most potent and containing flavonoids, phenolics and coumarins. The main components from several compounds of n-hexane extract of <em>C. gigantea</em> are germacrane-A, (-)-globulol, urs-12-ene and veridiflorol. </p>

scholarly journals A study on Antioxidant Properties of Different Extracts from Kitaibelia balansae

Proceedings ◽  
2019 ◽  
Vol 40 (1) ◽  
pp. 23
Author(s):  
Zengin ◽  
Aygun ◽  
Aktumsek
Keyword(s):  
Ethyl Acetate ◽  
Human Body ◽  
Antioxidant Properties ◽  
Water Extract ◽  
Antioxidant Ability ◽  
Chemical Methods ◽  
Potential Source ◽  
First Time ◽  
Antioxidant Effects ◽  
Ethyl Acetate Extracts

Nowadays, knowledge of ancient botanical medicinal practices and application of modern phytochemical techniques have provided the excellent tools for the purification and structural elucidation of various phyto-compounds, which, in turn, has given insights into their mode of action on the human body. This study has been designed to investigate for the first time the antioxidant effects of the ethyl acetate, methanolic, and water extracts of Kitaibelia balansae. Different chemical methods were performed and the observed abilities depend on the solvent used. The best antioxidant ability was noted in water extract, followed by methanol and ethyl acetate extracts. The highest level of phenolic was also detected in water extract. The present findings suggest that K. balansae can be considered as a potential source of bioactive compounds for novel phytopharmaceuticals development

scholarly journals IN-VIVO ANTI-DIARRHOEAL ACTIVITY AND PHYTOCHEMICAL SCREENING OF ETHANOL STEM BARK EXTRACT OF VITELLARIA PARADOXA GAERTN F. (SAPOTACEAE)

2020 ◽  
Vol 4 (3) ◽  
pp. 247-251
Author(s):  
Z. Abdullahi ◽  
A. A. Jimoh ◽  
B. E. Patrick ◽  
M. I. Yakubu ◽  
D. Mallam
Keyword(s):  
Castor Oil ◽  
Lethal Dose ◽  
Ethanol Extract ◽  
Stem Bark ◽  
Experimental Models ◽  
Bark Extract ◽  
Phytochemical Screening ◽  
Vitellaria Paradoxa ◽  
Stem Bark Extract

Different parts of Vitellaria paradoxa plant have many applications in ethno-medicine. Some of the uses of this plant include treatment of diarrhoea and other GIT disorders. In this study the antidiarrhoeal activity of the ethanol extract of Vitellaria paradoxa was evaluated using three experimental models: Castor oil-induced diarrhoea; small intestinal motility and intestinal fluid accumulation (enteropooling) models in mice. Five groups of five mice were used for each model. Group one mice received 10 ml/kg of distilled water, while groups 2, 3, and 4 received 125, 250 and 500 mg/kg of the extract orally respectively. Group 5 mice received Loperamide 5 mg/kg orally. Oral median lethal dose (LD50) of the extract was determined using OECD (2008) Guideline 425. Phytochemical studies were conducted using standard procedures. The LD50 was estimated to be greater than 5000 mg/kg body weight and there were no signs of mortality or visible signs of toxicity in all the mice treated. Phytochemical screening revealed the presence of carbohydrates, alkaloids, flavonoids, saponins, tannins, triterpenes, steroids, cardiac glycosides and anthraquinones glycosides. Extract showed a dose-dependent anti-diarrhoeal activity by reducing stool frequency and consistency. The extract at the higher doses significantly (p < 0.05) inhibited GIT motility and castor oil-induced enteropooling, comparable to that of the reference control drug Loperamide. The study showed that ethanol stem bark extract of Vitellaria paradoxa possess anti-diarrhoeal activity and thus justifies its ethno-medicinal use in the treatment of diarrhoea.

scholarly journals Isolation and Structure Elucidation of Soulatro Coumarin From Stem Bark of Calophyllum soulattri Burm F and In Vivo Antiplasmodial Activity by Using Mice Infected by Plasmodium berghei

2011 ◽  
Vol 2 (2) ◽  
pp. 242
Author(s):  
Jamilah Abbas ◽  
Achmad Darmawan ◽  
Syafruddin Syafruddin
Keyword(s):  
Ethyl Acetate ◽  
Silica Gel ◽  
Column Chromatography ◽  
Plasmodium Berghei ◽  
2D Nmr ◽  
Stem Bark ◽  
Antiplasmodial Activity ◽  
Nmr Techniques ◽  
Coumarin Compound

The soulatro coumarin compound was isolated and elucidated from the stem bark of Calophyllum soulattri Burm F, the samples were collected from Jayapura Papua Irian Island in Indonesia. Isolation process was done by maceration at room temperature in methanol, than partitioned in a mixture of n hexane-water (1:1), followed by dichloromethane-water (1:1)  and ethyl acetate-water (1:1). A portion of ethyl acetate extract was subjected to column chromatography over silica gel packed and eluted with n-hexane a gradient of ethyl acetate to 100% followed by CHCl3  in MeOH (20:1, 10 :1, 5:1, 1:1). Fraction  B (CHCl3 in MeOH 20:1) was subjected to column chromatography  over silica gel 300 mesh  and eluted with EtOAc-MeOH mixtures of increasing polarity. Faction with the same Rf valeus were combined and eluted with EtOAc-MeOH  (19:1) showed one spot on TLC. They were combined and evaporated to yield a solid than was recrystallized in mixture of CH2Cl2-methanol to give soulatro coumarin compound. The structure was determinated by spectroscopic analysis, in particular by 1D and 2D NMR techniques, from these spectra data conclution that compound is soulatro coumarin. Antimalarial assay was tested against Plasmodium berghei parasite as in vivo using 18 mices rodent wich was infected by  Plasmodium berghei parasite. The soulatro coumarin  showed activity against P. berghei with dosage 0.0005867 mM/1 kg body weight ; 0.005867 mM/1 kg bw; 0.05867 mM/1 kg bw; 0.5867 mM/1 kg bw 5.867 mM/1 kg bw and 58.67 mM/1 kg bw could inhibite growth rate of parasite = 57.32%; 63.37%; 43.02%; 53.49%; 47.67% respectively.Keywords : Antiplasmodial activity, coumarin, Calophyllum soulattri Burm. F, in vivo, Chloroquine, Plasmodium berghei.

scholarly journals ANTIBACTERIAL ACTIVITY AND PHYTOCHEMICAL SCREENING OF MORINGA OLEIFERA LAM. LEAVES AND SEEDS EXTRACT ON STAPHYLOCOCCUS AUREUS

2020 ◽  
Vol 7 (11) ◽  
pp. 276-284
Author(s):  
Garga M. A. ◽  
Manga S. B. ◽  
Rabah A.B. ◽  
Tahir H. ◽  
Abdullahi M. ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Ethyl Acetate ◽  
Moringa Oleifera ◽  
Volatile Oil ◽  
Diffusion Method ◽  
Phytochemical Analysis ◽  
Zone Of Inhibition ◽  
Biochemical Tests ◽  
Significant Difference ◽  
Zones Of Inhibition

The aim of this study was to investigate the antibacterial effect and identify the phytochemical constituents of Moringa oleifera leaves and seeds extract on Staphylococcus aureus (S. aureus) clinical isolates using agar well diffusion method. The samples were collected from the premises of Usmanu Danfodiyo University, Sokoto. The Seeds and Leaves were collected fresh. They were extracted using methanol and ethyl acetate. Various concentrations from 100mg/ml to 500mg/ml were prepared. The test bacteria used is Staphylococcus aureus obtained from Microbiology laboratory of the Usmanu Danfodiyo University. The bacteria were re-identified using biochemical tests. The bacterial inoculums were standardized to McFarland scale 0.5. Zone of inhibition were read after 24 hours of incubation at 370C.The results of the antibacterial study revealed that the methanolic leaves extracts at 500 mg/ml had effect on S. aureus with zone of inhibition of 20mm. The methanolic seed extract have effect on S. aureus with zone of inhibition of 19.5mm. The MIC for the leave and seed extracts for Staphylococcus aureus was 250mg/ml. The MBC was 500mg/ml. The results of the phytochemical analysis revealed the presence of flavonoid, tannins, saponins, cardiac glycosides, alkaloids, volatile oil, saponin glycosides, and glycosides but anthraquinone and steroids were absent in the extracts. The zones of inhibition showed that both the methanolic and ethyl acetate extracts at 500mg/ml were active to all the tested bacteria. ANOVA and Duncan Multiple Mean Range test was used to analyze the data. Based on Duncan’s grouping, there is significant difference between the solvents and the concentrations used.

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