scholarly journals ANTIFUNGAL ACTIVITY OF Heteranthera reniformis EXTRACTS AGAINST Bipolaris oryzae1

2021 ◽  
Vol 34 (2) ◽  
pp. 339-349
Author(s):  
LAÍS TESSARI PERBONI ◽  
DIRCEU AGOSTINETTO ◽  
CANDIDA RENATA JACOBSEN DE FARIAS ◽  
FÁBIO CLASEN CHAVES ◽  
JÉSSICA RODRIGUES GARCIA
Keyword(s):  
Antifungal Activity ◽  
Mycelial Growth ◽  
Fungicidal Activity ◽  
Methanol Extract ◽  
Methanolic Extract ◽  
Bipolaris Oryzae ◽  
Leaf Extracts ◽  
Active Compounds ◽  
Specialized Metabolites ◽  
Spore Length

ABSTRACT Plants synthesize specialized metabolites to defend themselves against pathogens. These active compounds, when isolated and identified, can be used as template for fungicide development. Based on field observations, Heteranthera reniformis (kidney leaf mudplantain) could potentially synthesize compounds with antifungal activity. The goal of this study was to evaluate the fungicidal activity of H. reniformis leaf extracts on Bipolaris oryzae development. The activities of hexane, ethyl acetate, and methanol extracts of H. reniformis leaves were tested on mycelial growth, sporulation, and colony morphology. Due to the highest inhibition of B. oryzae sporulation, methanol extract was chosen for concentration tests. The effect of methanol extract on B. oryzae spore length and germination was also evaluated. Methanolic extract was the most active in inhibiting B. oryzae sporulation. The morphology of the colonies is altered when the fungus grows in medium containing H. reniformis leaf extracts. Higher concentration of methanol extract stimulates mycelial growth and suppresses B. oryzae sporulation. There are reductions in length and number of germinated B. oryzae spores caused by methanol extract of H. reniformis leaves. Methanolic extract has compounds with antifungal activity and should be subjected to bioassay-guided isolation for purification and identification of these active compounds.

Antifungal activity of plant extracts against Colletotrichum musae, the post harvest anthracnose pathogen of banana cv. Martaman

2016 ◽  
Vol 46 (1) ◽  
pp. 2-15 ◽  
Author(s):  
Dawa Dolma Bhutia ◽  
Yeka Zhimo ◽  
Ramen Kole ◽  
Jayanta Saha
Keyword(s):  
Antifungal Activity ◽  
Plant Species ◽  
Plant Extract ◽  
Mycelial Growth ◽  
Disease Incidence ◽  
Leaf Extracts ◽  
Content Type ◽  
Colletotrichum Musae

Purpose – The purpose of this paper was to determine the antifungal activities of different solvent extracts of common plants in vitro and in vivo against banana anthracnose fungus Colletotrichum musae (Berk & M.A. Curtis) Arx, and to investigate its effects on the pathogen and identify the bio active component(s). Design/methodology/approach – Extracts were obtained from leaves, tender shoots, rhizomes, bulbs, seeds and fruits of 42 naturally growing plant species following hot sequential extraction. Preliminary screening of the solvent extracts was done based on the inhibition of radial mycelial growth of C. musae following poison food technique and conidial germination inhibition by cavity slide technique. The selected extracts were assessed for their effect on harvested banana in reducing anthracnose during storage. The active components in the bio-active fractions of plant extract were identified by gas chromatography-mass spectroscopy. Findings – Methanol extracted a larger quantity of material (between 6.9 and 12.5 per cent) than hexane or chloroform, and all its extracts were active against the test pathogen with mycelial growth inhibition ranging from 13.70 to 88.89 per cent. Zingiber officinale rhizome extract as well as Polyalthia longifolia and Clerodendrum inerme leaf extracts exhibited more than 80 per cent inhibition of mycelial growth. Total inhibition of spore germination of C. musae was recorded in Z. officinale and P. longifolia extracts at 0.3 per cent w/v and 0.5 per cent w/v concentration, respectively, while only 68 per cent spore inhibition was recorded in C. inerme at 0.5 per cent w/v concentration. Of the three plant species, Z. officinale had the best antifungal activity (18.0 per cent disease incidence; 2.2 disease severity scale) when banana fruits were dipped in the extract at a concentration of 0.5 per cent w/v at 5 days of storage in ambient condition (80-82 per cent R.H., 27 ± 1°C). The bio-active compounds in the extract of Z. officinale were identified as alpha-curcumene and zingerone. Originality/value – Based on the antifungal activity, plant extract of Z. officinale can be used as an effective alternative to chemicals in controlling anthracnose pathogen in harvested banana.

scholarly journals Phytochemical Profiling, Antioxidant and Antibacterial Activities of Leaf Extracts From Rhus leptodictya

2017 ◽  
Vol 9 (08) ◽  
Author(s):  
Fanyana M. Mtunzi ◽  
Ikechukwu P. Ejidike ◽  
Tshifhiwa Matamela ◽  
Ezekiel Dikio ◽  
Michael J. Klink
Keyword(s):  
Ethyl Acetate ◽  
Methanol Extract ◽  
Focal Point ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Antimicrobial Properties ◽  
Phytochemical Analysis ◽  
Bacterial Strains ◽  
Leaf Extracts ◽  
Active Compounds

An integral part of nature is herbal plants which contain natural substance essential to promote health. The focal point of this research resides on the phytochemical, antioxidant and antibacterial investigations of Rhus leptoditya leaves. Hexane, dichloromethane, ethyl acetate, acetone, and methanol solvent extracts were tested for their antioxidant and antimicrobial properties. Phytochemical analysis of R. leptodictya extracts revealed the presence of phenols, tannins, saponins, and flavonoids. Acetone extract with total flavonoid contents of 18.22 ± 2.1 mg/g while methanol extract with phenol contents (0.38 ± 0.002 mg/g) exhibited the highest amount amongst the studied extracts in the preliminary phytochemicals screening. The antioxidant activity of the plant extracts was evaluated using TLC based standard qualitative 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay. The methanol and acetone extracts showed maximum antioxidant bands compared to other selected solvents and promising radical scavenging activity at par with the standard antioxidant ascorbic acid (IC50 = 0.125 ± 0.013 mg/ml). The bioautography assay also demonstrated the bacterial growth inhibition of active compounds present in leave extracts. Acetone and ethyl acetate fractions showed the highest number of antibacterial active compounds against S. aureus. Minimum inhibitory concentration of the extracts examined using microplates of 96 wells containing Muller-Hinton methods against some bacterial strains, revealed methanol and acetone fractions with the lowest MIC value of 0.04 mg/ml against S. pneumoniae, while methanol extract possesses 0.008 mg/ml against S. aureus and B. subtilis. Results from this study project the R. leptodictya leave extracts constituents as health supplements that could be useful in food industries and in the treatment of various infectious diseases.

scholarly journals Isolation of Phomopsis Inhibitory Fraction of Allamanda Extract Removing Gum and Other Undesirable Compounds

2013 ◽  
Vol 5 (2) ◽  
pp. 199-203 ◽  
Author(s):  
F Ahmed ◽  
MB Meah ◽  
F Yasmin
Keyword(s):  
Ethyl Acetate ◽  
Mycelial Growth ◽  
Seed Quality ◽  
Methanol Extract ◽  
Ethyl Acetate Extract ◽  
Lower Percentage ◽  
Leaf Extracts ◽  
Phomopsis Vexans ◽  
Layer Chromatography ◽  
Ethyl Acetate Extracts

Allamanda leaf extracts were made by three organic solvents hexane, methanol and ethyl acetate having different polarities. Thin layer chromatography (TLC) of the refluxing extracts showed each of them contained considerable number of different compounds. By observing Rf value of these extracts it was confirmed that the compounds present in different extracts are not same and two of them (methanol and ethyl acetate) extracts were distilled to remove solvent for bioactivity test. In growth inhibition test, methanol and ethyl acetate extracts of allamanda inhibited mycelial growth of Phomopsis vexans. Ethyl acetate extract at 0.2% and 0.3% concentration inhibited 100% mycelial growth of Phomopsis vexans while methanol extract was not effective in suppressing growth rather it arrested temporarily the growth of Phomopsis vexans. Eggplant seeds treated with ethyl acetate extract in blotter produced higher percentage of seed germination (85.00%) and healthy seedlings (88.36%) and lower percentage of dead seed (15.00%), and rotten seed (5.89%) than those treated with methanol extract. In most cases, seed quality was improved with the increasing of concentration of ethyl acetate extract. It may be summarized that higher amount of antifungal compounds were present in ethyl acetate extract in purified form where methanol also have some compounds that inhibited partially growth of Phomopsis vexans.DOI: http://dx.doi.org/10.3329/jesnr.v5i2.14814 J. Environ. Sci. & Natural Resources, 5(2): 199-203 2012

scholarly journals Antifungal activity of extracts from Brazilian Cerrado plants on Colletotrichum gloeosporioides and Corynespora cassiicola

2011 ◽  
Vol 13 (4) ◽  
pp. 408-412 ◽  
Author(s):  
E.S. Naruzawa ◽  
M.F.S. Papa
Keyword(s):  
Antifungal Activity ◽  
Spore Germination ◽  
Mycelial Growth ◽  
Colletotrichum Gloeosporioides ◽  
Culture Media ◽  
Growth Stimulation ◽  
Corynespora Cassiicola ◽  
Brazilian Cerrado ◽  
Leaf Extracts ◽  
Caryocar Brasiliense

This study aimed to determine the antifungal activity of leaf aqueous and hydroethanolic extracts of 10 plants from the Brazilian Cerrado on Colletotrichum gloeosporioides and Corynespora cassiicola. Antifungal activity was measured through the incorporation of each extract in a culture media or spore suspension, at 50% concentration relative to the volume, determining respectively the mycelial growth and the spore germination. Then, the percentages of mycelial growth inhibition and spore germination inhibition were obtained based on the comparison with the control. The extracts had a variable action on the phytopathogens, from mycelial growth stimulation for Aristolochia esperanzae and Byrsonima verbascifolia extracts to complete inhibition of mycelial growth and spore germination for Myracrodruon urundeuva and Lafoensia pacari extracts. M. urundeuva, L. pacari and Caryocar brasiliense leaf extracts had antifungal activity against Colletotrichum gloeosporioides and Corynespora cassiicola; the hydroethanolic extracts presented more antifungal activity than the aqueous extracts, and spore germination of both phytopathogens was more affected than their mycelial growth.

scholarly journals Antifungal Activity of the Extract of a Macroalgae, Gracilariopsis persica, against Four Plant Pathogenic Fungi

Plants ◽  
2021 ◽  
Vol 10 (9) ◽  
pp. 1781
Author(s):  
Latifeh Pourakbar ◽  
Sina Siavash Moghaddam ◽  
Hesham Ali El Enshasy ◽  
R. Z. Sayyed
Keyword(s):  
Phenolic Compounds ◽  
Antifungal Activity ◽  
Palmitic Acid ◽  
Rosmarinic Acid ◽  
Mycelial Growth ◽  
Pathogenic Fungi ◽  
Hplc Method ◽  
Biologically Active ◽  
Plant Pathogenic Fungi ◽  
Active Compounds

Nowadays, the extract of seaweeds has drawn attention as a rich source of bioactive metabolites. Seaweeds are known for their biologically active compounds whose antibacterial and antifungal activities have been documented. This research aimed to study the profile of phenolic compounds using the HPLC method and determine biologically active compounds using the GC-MS method and the antifungal activity of Gracilariopsis persica against plant pathogenic fungi. G. persica was collected from its natural habitat in Suru of Bandar Abbas, Iran, dried, and extracted by methanol. The quantitative results on phenolic compounds using the HPLC method showed that the most abundant compounds in G. persica were rosmarinic acid (20.9 ± 0.41 mg/kg DW) and quercetin (11.21 ± 0.20 mg/kg DW), and the least abundant was cinnamic acid (1.4 ± 0.10 mg/kg DW). The GC-MS chromatography revealed 50 peaks in the methanolic extract of G. persica, implying 50 compounds. The most abundant components included cholest-5-en-3-ol (3 beta) (27.64%), palmitic acid (17.11%), heptadecane (7.71%), and palmitic acid methyl ester (6.66%). The antifungal activity of different concentrations of the extract was determined in vitro. The results as to the effect of the alga extract at the rates of 200, 400, 600, 800, and 1000 μL on the mycelial growth of four important plant pathogenic fungi, including Botrytis cinerea, Aspergillus niger, Penicillium expansum, and Pyricularia oryzae, revealed that the mycelial growth of all four fungi was lower at higher concentrations of the alga extract. However, the extract concentration of 1000 μL completely inhibited their mycelial growth. The antifungal activity of this alga may be related to the phenolic compounds, e.g., rosmarinic acid and quercetin, as well as compounds such as palmitic acid, oleic acid, and other components identified using the GC-MS method whose antifungal effects have already been confirmed.

scholarly journals Identification of active compounds and antifungal activity of Toona sinensis leaves fractions against wood rot fungi

2018 ◽  
Vol 19 (4) ◽  
pp. 1313-1318 ◽  
Author(s):  
RIZKI RABECA ELFIRTA ◽  
SYAMSUL FALAH ◽  
DIMAS ANDRIANTO ◽  
TIEN LASTINI
Keyword(s):  
Antifungal Activity ◽  
Diethyl Ether ◽  
Methanol Extract ◽  
Growth Direction ◽  
Active Compounds ◽  
Toona Sinensis ◽  
Abnormal Growth ◽  
Ether Fraction ◽  
Wood Rot Fungi ◽  
Layer Chromatography

Elfirta RR, Falah S, Andrianto D, Lastini T. 2018. Identification of active compounds and antifungal activity of Toona sinensisleaves fractions against wood rot fungi. Biodiversitas 19: 1313-1318. Inhibitory activities of surian or toon (Toona sinensis) leavesfraction origin Sumedang, West Java, Indonesia against wood rot fungi (Ganoderma boninense IPBCC 10.658, Trametes versicolorInaCC F200, and Phanerochaete chrysosporium IPBCC 93.259) were studied. The samples were macerated using methanol andacetone. The results of brine shrimp lethality test (BSLT) showed that the methanol extract had the highest cytotoxicity of LC50 at 29.76μg/mL and inhibit the growth of G. boninense (27.78%), T. versicolor (79.26%) and P. chrysosporium (81.11%). The methanol extractwas then subsequently fractionated using n-hexane, diethyl ether, and ethyl acetate respectively. The diethyl ether fraction was found tohave the highest inhibitory activity against T. versicolor (46.30%) and P. chrysosporium (81.11%). This fraction was further separatedusing column chromatography and analyzed using thin layer chromatography (TLC), which gave six fractions. Antifungal test exhibitedthat fraction 5 had the highest antifungal properties against T. versicolor (74.07%) and P. chrysosporium (80.37%). Inhibition of P.chrysosporium resulted in abnormal growth of hyphae morphology as indicated by changes in its growth direction and excessive hyphaebranching. Additionally, the results of LC-MS/MS experiment indicated toon leaves fraction 5 which contains N-[2- (DGlucopyranosyloxy)ethyl]-2-hydroxy-N-[2hydroxy3 (octadecyloxy) propyl] butanamide dan Brucine compounds that were regarded as theantifungal compounds.

scholarly journals Emodin Isolation from the Leaves of Pteridium acquilinum

2019 ◽  
pp. 1-6
Author(s):  
M. E.. Khan ◽  
E. T. Williams ◽  
A. Abel
Keyword(s):  
Chemical Structure ◽  
Leaf Extract ◽  
Methanol Extract ◽  
Methanolic Extract ◽  
Solvent System ◽  
Female Rats ◽  
Leaf Extracts ◽  
Two Phase ◽  
Vacuum Liquid Chromatography ◽  
First Time

This study was designed to isolate and characterize the active compound(s) from the leaf extract of Pteridiumacquilinum after the aqueous and methanolic leaf extracts had been investigated on some female rats hormones One anthraquinoneemodin (1, 3, 8-trihydroxy-6-methyl-anthra-quinone) was successfully purified from the methanolic extract of the medicinal plant by Chromatography (VLC, TLC and Sephadex). The initial elution was with n hexane– ethyl acetate–methanol (18:22:3, v/v/v) as the two-phase solvent system and yielded 3.4 mg of emodin. The Vacuum Liquid Chromatography (VLC), fraction (from the methanol extract) was analyzed by Nuclear magnetic resonance (NMR) and the chemical structure of the anthraquinone was confirmed by 1H-NMR and 13C-NMR analyses. This is the first time this anthraquinone, emodin is being reported from P. aquilinum.

scholarly journals Macrofilaricidal Activity of Leaf Extracts of Rauvolfia tetraphylla L. Against Bovine Filarial Parasite Setaria cervi.

2017 ◽  
Vol 9 (09) ◽  
Author(s):  
Behera D. R. ◽  
R. K. Ghosh
Keyword(s):  
Methanol Extract ◽  
Methanolic Extract ◽  
Blue Dye ◽  
Significant Activity ◽  
Leaf Extracts ◽  
Setaria Cervi ◽  
Standard Drug ◽  
Ic50 Value ◽  
Rauvolfia Tetraphylla ◽  
Better Than

Leaf extracts of Rauvolfia tetraphylla were evaluated for antifilarial potential using Setaria cervi as target parasite. Four extracts were tested these were hexane, chloroform, acetone and methanol. The activity was assessed by means of worm motility assay, MTT reduction and GST enzyme inhibition assay using female worms of Setaria cervi. DEC was used as a standard drug. Methanol extract exhibited significant activity among all the extracts with percentage of reduction 89.28% at 10mg/ml concentration. DEC was comparitively less active than methanolic extract with 79.22% activity at the same dose. The IC50 value for methanolic extract was found to be 0.03mg/ml, which was better than the standard DEC i.e. 2.84mg/ml. The methanol extract significantly inhibited the GST enzyme activity of Setaria worms as compared to untreated worms with percentage of inhibition value of 56.41% at 10mg/ml. The most active methanol extract was finally explored for cell viability study by using trypan blue dye exclusion test. The methanolic extract significantly killed the oocytes of Setaria worms as all the oocytes stained blue in treated worms and unstained in control oocytes. The findings indicate that the methanolic extract has potent macrofilaricidal ativity.

Investigation of antiulcer activity of Pergularia extensa Linn

2020 ◽  
Vol 9 (2) ◽  
pp. 23-26
Author(s):  
Pavani C H
Keyword(s):  
Cardiac Glycosides ◽  
Methanol Extract ◽  
Methanolic Extract ◽  
Antiulcer Activity ◽  
Acute Oral Toxicity ◽  
Gastric Lesions ◽  
Oral Toxicity ◽  
Control Groups ◽  
Dose Dependent

This study was based on determination of the antiulcer activity from methanol extract was prepared by using barks of pergularia extensa linn.. Priliminary investigations showed presence of saponins, terpenes, cardiac glycosides, alkaloids and sterols. Based on OECD-423 Guidelines, the pharmacology and acute oral toxicity studies were conducted by using methanolic extract. Ulcer development was prevented by Tannins because of their vasoconstriction effects and due to protein precipitation. Similarly, the Methanolic extract of Pergularia extensa Linn shows triterpenoids and saponins. The phytoconstituents are present in the extract and these could be possible agents which are involved in order to prevent gastric lesions induced by aspirin. When compared to ulcerative control groups, this Pergularia extensa Linn., shows a dose dependent curative ratio. The extracts exhibited an inhibition percentage of 27.18, 45.47 and 61.28 at doses of 100, 200 and 400mg/kg doses respectively. 

Aktivitas Antifungi Air Perasan Bawang Merah (Allium ascalonicum L.) Terhadap Candida albicans Secara In Vitro

2017 ◽  
Vol 9 (2) ◽  
pp. 71
Author(s):  
Nurhasanah Nurhasanah ◽  
Fauzia Andrini ◽  
Yulis Hamidy
Keyword(s):  
Candida Albicans ◽  
Antifungal Activity ◽  
Allium Sativum ◽  
Fungicidal Activity ◽  
Positive Control ◽  
Negative Control ◽  
Randomized Design ◽  
Significant Difference ◽  
Completely Randomized Design

Shallot (Allium ascalonicum L.) has been known as traditional medicine. Shallot which has same genus with garlic(Allium sativum L.) contains allicin that is also found in garlic and has been suspected has fungicidal activity toCandida albicans. It is supported by several researches. Therefore, shallot is suspected has antifungal activity too.The aim of this research was to know antifungal activity of shallot’s water extortion againsts Candida albicans invitro. This was a laboratory experimental research which used completely randomized design, with diffusion method.Shallot’s water extortion was devided into three concentrations, there were 50%, 100% and 200%. Ketoconazole 2%was positive control and aquadest was negative control. The result of this research based on analysis of varians(Anova), there was significant difference between several treatments and was confirmed with Duncan New MultipleRange Test (DNMRT) p<0,05, there was significant difference between 100% shallot’s water extortion with othertreatments, but there was no significant difference between 50% shallot’s water extortion with 200% shallot’s. Theconclusion was shallot’s water extortion had antifungal activity againsts Candida albicans with the best concentration100%, but it was lower than ketoconazole 2%.

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