scholarly journals Antioxidant and Antimicrobial Properties of Ocimum sanctum and Cymbopogon nardus

2020 ◽  
Vol 9 (1) ◽  
pp. 14-20
Author(s):  
Ruth Amarachi Ogbonna ◽  
Rahini Ramanathan ◽  
Ng Shee Ping
Keyword(s):  
Plant Extracts ◽  
Hplc Analysis ◽  
Positive Control ◽  
Diffusion Method ◽  
Ocimum Sanctum ◽  
Leaf Extracts ◽  
Water Extracts ◽  
Cymbopogon Nardus ◽  
Organic Extracts ◽  
Citronella Grass

Plant extracts have gained popularity recently, for their importance as potential antioxidative and antimicrobial agents. These properties have been attributed to their phytochemical content. The extraction solvent and the plant part are among the factors that influence the yield of these phytochemicals This study was therefore undertaken to investigate the antimicrobial and antioxidant activities of extracts of the leaf and stem of Ocimum sanctum (holy basil) and Cymbopogon nardus (citronella grass); two commonly occurring plants in South East Asia. The extracts were obtained by solvent extraction using water, methanol and ethanol. The percentage yield, antimicrobial activity, antioxidant activity and high-performance liquid chromatography (HPLC) analysis was investigated. The organic extracts yielded a higher percentage recovery of phytochemicals compared to the water extracts.  HPLC analysis revealed the presence of chlorogenic acid in all extracts; rutin only in the leaf extracts and the citronella grass leaf extract contained both rutin and gallic acid. Antimicrobial assays were performed using the agar well diffusion method with tetracycline as positive control. Basil extracts exerted a greater inhibitory growth on both S. aureus and E. coli. S. aureus was found to be more susceptible to the presence of plant extracts. Water extracts did not display any zones of inhibition. The DPPH (2,2-diphenyl-1-picrylhydrazyl) assay was used to study the antioxidant effect with Vitamin C (0.1mg/ml) as positive control. The results indicated that the Basil leaf extracts possessed greater antioxidant potential compared to the stem. The study concludes that organic extracts of O. sanctum and C. nardus possess pharmaceutical properties.

scholarly journals Antibiotic sensitivity and in vitro antimicrobial activity of plant extracts to pseudomonas fluorescens isolates collected from diseased fish

1970 ◽  
Vol 1 (4) ◽  
pp. 82-88 ◽  
Author(s):  
MJ Foysal ◽  
MM Rahman ◽  
M Alam
Keyword(s):  
Antibacterial Activity ◽  
Pseudomonas Fluorescens ◽  
Plant Extracts ◽  
Antibiotic Sensitivity ◽  
Diffusion Method ◽  
Biochemical Tests ◽  
Leaf Extracts ◽  
Sensitivity Pattern ◽  
Medicinal Plant Extracts

Studies were conducted to identify Pseudomonas fluorescens isolates from a collection of bacteria isolated from bacterial haemorrhagic septicaemia infected carp and catfish, evaluate their antibiotic sensitivity pattern and screen the antibacterial activity of some medicinal plant extracts against the isolates.. A total of 10 isolates were identified as P. fluorescens by morphological, physiological and biochemical tests. In vitro antibiotic sensitivity test of the P. fluorescens isolates were conducted by disc diffusion method for seven antibiotics where, all of the isolates were found to be sensitive only against streptomycin and gentamycin but, most of the isolates (80%) were found resistant to chloramphenicol (C). Moreover, eighty percent of the isolates showed resistance to multiple antibiotics. A total of 118 plant extracts were screened for their antibacterial activity against the P. fluorescens isolates where the isolates exhibited sensitivity to 30 samples. Leaf extracts of Tamarindus indicus, Terminalia chebula, Citrus aurantifolia, Eugenia caryophyllata and Spondias pinnata were found to inhibit the growth of all of the P. fluorescens isolates. DOI: http://dx.doi.org/10.3329/ijns.v1i4.9733 IJNS 2011 1(4): 82-88

scholarly journals DETERMINATION OF ANTIMICROBIAL ACTIVITY IN LEAVES AND FLOWERS OF CHROMOLAENA SCABRA (L. F.) R.M. KING AND H. ROB.

2020 ◽  
pp. 53-56
Author(s):  
PAULA ALEJANDRA GIRALDO VILLAMIL ◽  
ANDRÉS CAMILO ANDRADE BURBANO ◽  
LUIS POMBO OSPINA ◽  
JANETH ARIAS PALACIOS ◽  
ÓSCAR EDUARDO RODRÍGUEZ AGUIRRE
Keyword(s):  
Antimicrobial Activity ◽  
Petroleum Ether ◽  
Petroleum Ether Extract ◽  
Fungal Growth ◽  
Inhibitory Effect ◽  
Positive Control ◽  
Diffusion Method ◽  
Leaf Extracts ◽  
Ic50 Values ◽  
Bacteria And Fungi

Objective: The objective of the study was to determine the antimicrobial activity of leaf and flower extract in Chromolaena scabra (L. f.) R.M. King and H. Rob., against selected strains of bacteria and fungi. Methods: The agar diffusion method with plate perforation was developed; the microorganisms used were strains of Staphylococcus aureus and Escherichia coli, Aspergillus niger, and Penicillium digitatum. Rifampicin was used as a positive control. The evaluation was performed by measuring the diameter of the growth inhibition zones around the holes. The inhibitory effect of the plant extracts was obtained by its efficiency compared to the positive control. A comparison with fluconazole and ketoconazole was performed to determine how much of the extract is required to cause inhibition of fungal growth from the standard. Results: IC50 was determined by relating the ln of mass evaluated with respect to the square of the inhibition halo; ethanolic extracts of leaves and flowers of petroleum ether with IC50 values of 85.8 mg/ml and 50.3 mg/ml showed the highest inhibitory effect against S. aureus; the extract of petroleum ether and ethanol from leaves with IC50 of 64 mg/ml and 60 mg/ml, respectively. They were effective with A. niger. Leaf petroleum ether extract showed the best relative antifungal activity against A. niger with respect to fluconazole equivalent to 459.51 when fluconazole is 1.0. Conclusion: The extracts with high potential to inhibit the growth of microorganisms were determined to be ether flowers of petroleum and ethanol leaf extracts.

scholarly journals Uji Aktivitas Antifungi Perasan Daun Kemangi (Ocimum sanctum Linn.) terhadap Aspergilllus terreus secara In Vitro [Antifungal Activity Test of Basil Leaves Juice (Ocimum sanctum Linn.) against Aspergilllus terreus by in Vitro]

2019 ◽  
Vol 6 (2) ◽  
pp. 171
Author(s):  
Tyfany Imanu Sabrina, Sudarno, Hari Suprapto
Keyword(s):  
Positive Control ◽  
Negative Control ◽  
The Body ◽  
Diffusion Method ◽  
Ocimum Sanctum ◽  
Minimum Concentration ◽  
And Diffusion ◽  
Fungus Growth ◽  
Leaf Juice

Abstract Aspergillus terreus is a fungus that causes aspergillosis disease. The infected fishes showed grey white patches over the body. Haemorrhagic ulceratic patches were observed on the gill and skin. The infections resulted in the death of the fishes. The use of chemicals to control fungal attack A. terreus can harm fish, the environment and humans who eat them. Treatment of fungal diseases that use a lot of chemicals that can harm the fish, the environment and humans who eat them. The use of medicinal plants is a safe way to inhibit and kill fungus growth as well as environmentally friendly. One of them uses the basil plant (Ocimum sanctum). The purpose of this study was to determine the minimum concentration of activity and basil leaf juice (O. sanctum Linn) as antifungal against A. terreus growth in vitro . The experiment was conducted at the Laboratory of the Faculty of Fisheries and Marine Airlangga University in July 2013. The method used in this research that the paper disc diffusion method and diffusion pitting. The analysis used in this study is descriptive statistica. The results of research using the juice of basil leaves (O. santum) of juice concentration of 50% (2,5 ml juice of basil leaves + 2,5 ml NaCl) to concentration 100% (5 ml juice of basil leaves) did not produce a clear zone around the paper discs and pitting, it is the same as the negative control. The positive control did not show fungus growing on Sabouraud Dextrose Agar medium (SDA).

PHYTOCHEMICAL SCREENING, ANTIBACTERIAL, AND ANTIOXIDANT ACTIVITIES OF CASSIA MONTANA HEYNE EX ROTH LEAF EXTRACTS

2021 ◽  
pp. 41-16
Author(s):  
HEMALATHA M ◽  
BHAKSHU L ◽  
YASODAMMA N
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Antibacterial Activity ◽  
Gallic Acid ◽  
Dry Weight ◽  
Diffusion Method ◽  
Klebsiella Pneumonia ◽  
Phytochemical Screening ◽  
Leaf Extracts ◽  
Water Extracts

Objective: The leaf extracts of Cassia montana (Caesalpiniaceae) were being used for leucorrhea and rheumatic pains used by the certain tribal people in Andhra Pradesh. The present studies focused on the antibacterial, antioxidant activity of leaf extracts of C. montana which provide the scientific basis for its folklore applications in various ailments. Methods: Ethyl-alcohol and water extracts of C. montana (leaf) were screened for phytochemicals, antimicrobial activity and antioxidant activity using in vitro methods. The total phenolics were estimated using Folin–Ciocalteu reagent with reference to gallic acid, whereas the antioxidants of the extracts were quantified using ammonium molybdate reduction assay with reference to the ascorbic acid. The antibacterial activity was studied by disk-diffusion method and the radical scavenging assay by DPPH discoloration method with reference to ascorbic acid. Results: The leaf extracts were tested for antibacterial, antioxidants, and phytochemical screening and found the significant phytoconstituents as steroids, lignins, flavonoids, phenols, glycosides, tannins, cardiac glycosides, and reducing sugars in ethanol and aqueous extracts. The tested extracts exhibited significant antibacterial activity. It is also observed that ethanolic extracts are more effective with minimum inhibition concentrations values at 28 and 32 μg/disk against Bacillus subtilis and Staphylococcus aureus followed by Klebsiella pneumonia and Pseudomonas aeruginosa with 80 and 90 μg/disk. Total polyphenols quantified in alcohol and water extracts with reference to the gallic acid is 108 and 267 mg/g dry weight of leaf, respectively. Total antioxidants quantified in alcohol and water extracts with reference to the ascorbic acid is 70 and 85 mg/g dry weight of leaf, respectively. The tested extracts were exhibited strong effect on the discoloration of DPPH indicated the significant scavenging activity. Conclusion: The present study revealed that the tested extracts were exhibited significant anti-bacterial antioxidant activity along with the diversified phytochemicals. Hence, the leaf extracts of C. montana were having potential role in the treatment of ethno botanical health claims.

scholarly journals Effect of Crude Plant Extracts on Mushroom Mite,Luciaphorussp. (Acari: Pygmephoridae)

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Prapassorn Bussaman ◽  
Chirayu Sa-uth ◽  
Paweena Rattanasena ◽  
Angsumarn Chandrapatya
Keyword(s):  
Plant Extracts ◽  
Curcuma Longa ◽  
Zingiber Officinale ◽  
Ocimum Sanctum ◽  
Agricultural Pests ◽  
Kaempferia Parviflora ◽  
Melissa Officinalis ◽  
Leaf Extracts ◽  
Mushroom Species ◽  
Mite Mortality

The use of plant extracts for controlling agricultural pests has become increasingly popular in the recent years. Mushroom mite,Luciaphorussp., is a destructive pest of several mushroom species and has been reported to cause severe loss of mushroom cultivation in many settings. The efficacies of 23 rhizome and leaf extracts were evaluated against female adults ofLuciaphorussp. At 3 days after treatment, the rhizome extracts derived fromCurcuma xanthorrhizaRoxb. andZingiber montanum(Koenig) Link ex Dietr. were found to have very strong acaricidal activities, resulting in 100% mite mortality, followed byCurcuma longaLinn. (98.89%),Zingiber zerumbet(L.) Smith. (97.78%),Kaempferia parvifloraWall. Ex Baker (88.89%), andZingiber officinaleRoscoe. (84.44%). The leaf extracts ofOcimum sanctumLinn. andMelissa officinalisL. also resulted in 100% mite mortality 3 days after treatment, while the other leaf extracts induced mite mortality only below 70%. The results suggested that rhizome extracts ofC. xanthorrhizaandZ. montanumand leaf extracts ofO. sanctumandM. officinalishave a great potential for future development as natural acaricides for controllingLuciaphorussp.

scholarly journals Comparative Antibacterial Analysis and Synergistic Potency of the Leaf Extracts of Ocimum gratissimum Linn. and Gongronema latifolium Benth. on Some Enteric Bacterial Isolates

2019 ◽  
pp. 98-107
Author(s):  
D. A. Awomukwu ◽  
C. K. Anumudu ◽  
A. J. Ogbolosingha
Keyword(s):  
Minimum Inhibitory Concentration ◽  
Plant Extracts ◽  
Inhibitory Concentration ◽  
Antibacterial Effect ◽  
Diffusion Method ◽  
Bacterial Isolates ◽  
Leaf Extracts ◽  
Ocimum Gratissimum ◽  
The Individual ◽  
Gongronema Latifolium

The research was undertaken to investigate the comparative phytochemical and in-vitro antibacterial activity of the single and combined strengths of the leaf extracts of Ocimum gratissimum Linn and Gongronema latifolium Benth. on some enteric bacterial isolates. The sensitivity test and minimum inhibitory concentration (MIC) were carried out using a modified agar-well diffusion method.  The enteric bacterial isolates tested included Escherichia coli, Shigella dysenteriae, Salmonella Typhi and Enterobacter aerogenes.  Standard methods were applied to obtain the ethanol and aqueous leaf extracts. The ethanol extracts of O. gratissimum and G. latifolium produced highly significant inhibitory activity against all the enteric bacterial isolates tested.  Comparatively, the ethanol plant extracts were more potent than the commercially available drug, Ciprofloxacin and the aqueous plant extracts. The isolates were sensitive at a minimum inhibitory concentration of 1.25 mg/ml for the ethanol extract but varied from 2.5 mg/ml - 5.0mg/ml in the aqueous extract.  It was also observed that the synergistic antibacterial effect of the medicinal plant extracts was greater than the singular antibacterial effect of the individual plant extracts in both the ethanol and aqueous extracts. The potency of the individual extracts and the combined effect may be due to the presence of flavonoids, alkaloids, phenols, tannins and saponins in the leaves of the plants.  This study partly validates the use of the plant extracts in the treatment of disease caused by the enteric bacterial isolates by multiple traditional medicine practitioners in Nigeria, however, strict adherence to dosage is recommended.  The leaf extract is a potential source of the new drug if the components are purified and enhanced for treating infections caused by these enteric pathogens.

scholarly journals Antibacterial Effects of Ocimum Sanctum L Leaves, Flowers and Shoots against Bacillus spp from Soil

2014 ◽  
Vol 1 (1) ◽  
pp. 35-41
Author(s):  
Md. Azizul Islam ◽  
Md. Abul Kalam Azad ◽  
Md. Rezaul Karim ◽  
Sudhangsu Kumar Biswas ◽  
Md. Mostafizur Rahmam ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Bacillus Megaterium ◽  
Antimicrobial Agents ◽  
Ethanol Extract ◽  
Diffusion Method ◽  
Ocimum Sanctum ◽  
Standard Drug ◽  
Bacillus Simplex ◽  
Organic Extracts

In this study, the antibacterial activity of various organic solvent extracts of Ocimum sanctum L leaves, flowers and shoots was determined in vitro using agar diffusion method and MIC tested against the isolated soil bacteria. The identified bacteria were Paenibacillussp. L32, Paenibacillussp. BF38, Bacillus megaterium, Terribacillussp. 3LF, Bacillus simplex and Bacillus cereus. Various organic extracts of Ocimum sanctum L revealed a good antibacterial activity against about all bacteria. Results showed that the best extract was methanol because highest inhibition zone were obtained by this extract and all studied bacteria were inhibited. At a concentration of 500 µg/disc, the highest microbial inhibition was found 19.2±.76 mm against Bacillus simplex for methanol extract, 15.7±0.58 mm on Terribacillus sp. 3LF for ethanol extract of flower, 14.0±2.0 mm on Terribacillus sp. 3LF for ethanol extract of leaves, 13.34±0.58 mm on Bacillus megaterium for n-hexane extract and 11.7±0.6 mm on Terribacillus sp. 3LF for chloroform extract, respectively and MIC (64, 128, 256 and 512 µg/ml, respectively). Most of the cases, antibacterial activity with commercial antibiotics such as amoxicillin and erythromycin, organic extracts exhibited similar or higher antibacterial activity than standard drug. The results of this study suggest that the organic extracts of Ocimum sanctum L leaves can be a source of natural antimicrobial agents with potential applications.  

scholarly journals Effectiveness of Chinese Leaf Extract and Leaf Plants (Jatropha Multifida L.) As Antibacterial to Bacterial Growth Staphylococcus Aureus In Vitro

2018 ◽  
pp. 29-33
Author(s):  
Dwi Anggita ◽  
Yusriani Yusriani ◽  
Dian Amelia Abdi ◽  
Vivin Desiani
Keyword(s):  
Staphylococcus Aureus ◽  
Leaf Extract ◽  
Average Diameter ◽  
Inhibition Zone ◽  
Positive Control ◽  
Diffusion Method ◽  
Leaf Extracts ◽  
The Difference ◽  
Jatropha Multifida

Jatropha multifida L. contains alkaloids, tannins, flavonoids, saponins and phenolic acids that differ from each part of the plant and the content of these substances is what makes L. multifida Jatropha has a function as an antibacterial so that the leaf extract and the gap of chinese distance ( Jatropha multifida L.) allegedly capable of inhibiting the growth of Staphylococcus aureus bacteria. The aim of this research was to know the effectivity of leaf extract and gum of Jatropha multifida L. to the growth of Staphylococcus aureus bacteria in vitro.Penelitian used true experimental post test design. Using disc diffusion method with concentration 25; 50; 75; and 100% v / v leaf and gum china distance. Positive control was used Clindamycin 5μg drip antibiotic paper disc. The data were analyzed descriptively. The result of the research showed the difference of different inhibition zone between treatments. In chinese leaf extracts showed different mean diameters, at concentrations of 25%, 50%, 75% with inhibit zone formed respectively 0 mm, 9.32 mm, and 17.48 mm and the highest inhibition zone at concentration of 100% with an average diameter of 22.24 mm. In the gap of chinese distance showed a different mean diameter, at concentrations of 25%, 50%, 75% with the inhibit zone formed respectively 16.08 mm, 18.15 mm, and 18.63 mm and the highest inhibition zone at a concentration of 100% with an average diameter of 21.91 mm. Clindamycin positive controls show an average inhibit zone of 23.31 mm. It was concluded that there was an effect of leaf extract and resin of chinese distance plant (Jatropha multifida L.) on growth of Staphylococcus aureus bacteria, and the best concentration was 100% concentration and almost closer to the inhibitory zone of Clindamycin antibiotics as positive control.

scholarly journals Fabrication and Antibacterial Effects of Polycarbonate/Leaf Extract Based Thin Films

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
R. Mahendran ◽  
D. Sridharan ◽  
C. Arunmozhidevan ◽  
T. A. Selvakumar ◽  
P. Rajasekar
Keyword(s):  
Thin Films ◽  
Leaf Extract ◽  
Antibacterial Activities ◽  
Psidium Guajava ◽  
Diffusion Method ◽  
Ocimum Sanctum ◽  
Leaf Extracts ◽  
Disk Diffusion Method ◽  
E Coli ◽  
Blending Method

We have reported the preparation and antibacterial activities of leaf extract incorporated polycarbonate thin films to improve the antibacterial characteristics of host polycarbonates (PCs). Crude extracts of Azadirachta indica, Psidium guajava, Acalypha indica, Andrographis paniculata, and Ocimum sanctum were prepared by maceration using Dimethylformamide as solvent. The leaf extracts (LE) were incorporated into the PC matrix by solution blending method, and the thin films were fabricated by Thermally Induced Phase Separation (TIPS) technique. The antibacterial activities of the as-prepared films were evaluated against E. coli and S. aureus by disk diffusion method. The inhibitory effects of the PC/LE films are higher for S. aureus than the E. coli, but pristine PC film did not exhibit any remarkable antibacterial characteristics. Further, the model fruit (Prunus) studies revealed that the PC/LE films retained the freshness of the fruits for more than 11 days. This study demonstrates that the PC/LE films have excellent antibacterial activities; thus, the films could be promising candidate for active antibacterial packaging applications.

scholarly journals Antibacterial Activity of Different Organic Extracts of Achyranthes Aspera and Cassia Alata

2009 ◽  
Vol 1 (2) ◽  
pp. 393-398 ◽  
Author(s):  
M. T. Alam ◽  
M. M. Karim ◽  
Shakila N. Khan
Keyword(s):  
Antibacterial Activity ◽  
Antibacterial Activities ◽  
Salmonella Typhi ◽  
Diffusion Method ◽  
Leaf Extracts ◽  
Cassia Alata ◽  
Achyranthes Aspera ◽  
Methanolic Extracts ◽  
Organic Extracts ◽  
Zones Of Inhibition

Extracts in organic solvents (namely methanol, ethanol, ethyl acetate and chloroform) of two medicinal plants - Achyranthes aspera and Cassia alata were evaluated for their antibacterial activities against Escherichia coli, Bacillus subtilis, Vibrio cholerae, Salmonella typhi and Staphylococcus aureus. These were carried out by taking the organic extracts of both the leaf and stem parts of the plants at a concentration of 5 mg/ml and their activities were recorded by estimating zones of inhibition as produced by disc-diffusion method on Mueller-Hinton agar media. While neither the leaf nor stem parts of A. aspera in any organic extractions showed antibacterial activity, the methanolic extracts of both the leaf and stem parts of C. alata exhibited antibacterial activity, but only to B. subtilis and S. typhi, and the corresponding MIC values of the leaf extracts were estimated as 1.25 and 1.5 mg/ml respectively. However, the ethanolic extracts of both the stem and leaf parts were found equally effective only to S. aureus (MIC= 1.25 mg/ml). The corresponding MBC values are reported. Keywords: Achyranthes aspera; Cassia alata; Antibacterial.© 2009 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved.DOI: 10.3329/jsr.v1i2.2298  

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