scholarly journals Antibacterial activity of lime (Citrus aurantifolia) essential oil and limonene against fish pathogenic bacteria isolated from cultured olive flounder (Paralichthys olivaceus)

2018 ◽  
Vol 26 (2) ◽  
pp. 131-139 ◽  
Author(s):  
Hansani N.K.S. Pathirana ◽  
Sudu H.M.P. Wimalasena ◽  
Benthotage C.J. De Silva ◽  
Sabrina Hossain ◽  
Gang-Joon Heo
Keyword(s):  
Antibacterial Activity ◽  
Essential Oil ◽  
Pathogenic Bacteria ◽  
Paralichthys Olivaceus ◽  
Inhibition Zone ◽  
Olive Flounder ◽  
Gram Negative ◽  
Inhibition Zone Diameter ◽  
Citrus Aurantifolia ◽  
Zone Diameter

Abstract The antibacterial activity of lime (Citrus aurantifolia) essential oil (LEO) and limonene was tested against seven Gram-negative and nine Gram-positive fish pathogenic bacteria isolated from cultured olive flounder, Paralichthys olivaceus (Temminck & Schlegel) in Korea. Limonene was >99% concentrated and LEO consisted of eleven chemical compounds including 56.22% of limonene. Disk diffusion assay, minimum inhibitory concentration (MIC), and minimum bactericidal concentration (MBC) tests were done. LEO and limonene inhibited the growth of both Gram-negative and Gram-positive bacteria. LEO and limonene (MBC/MIC= 2-8) were both bactericidal and bacteriostatic for the strains tested. In every fish pathogenic bacteria, the inhibition zone diameter (IZD) increased in proportion to the oil concentration and the maximum effect was found at 100% (V/V) concentrations of LEO and limonene. The antibiogram pattern indicated that all the bacterial strains, excluding three strains of S. iniae (S186, S530, and S131), showed resistance to one or more antibiotics. The percentage of the relative inhibition zone diameter (RIZD %) exhibited high values at higher concentrations of all the agents. Since antibacterial activities of LEO and limonene were considerably effective against fish pathogenic bacteria, they could be used as alternatives to treat bacterial infections in aquaculture.

scholarly journals Antibacterial activity of cinnamon (Cinnamomum zeylanicum) essential oil and cinnamaldehyde against fish pathogenic bacteria isolated from cultured olive flounder Paralichthys olivaceus

2019 ◽  
Vol 66 (2) ◽  
Author(s):  
H.N.K.S. Pathirana ◽  
S.H.M.P. Wimalasena ◽  
B.C.J. De Silva ◽  
S. Hossain ◽  
G.J. Heo
Keyword(s):  
Antibacterial Activity ◽  
Essential Oil ◽  
Pathogenic Bacteria ◽  
Paralichthys Olivaceus ◽  
Inhibition Zone ◽  
Cinnamomum Zeylanicum ◽  
Gram Negative ◽  
Inhibition Zone Diameter ◽  
Zone Diameter ◽  
Olive Flounder Paralichthys Olivaceus

Antibacterial activity of cinnamon (Cinnamomum zeylanicum) essential oil (CEO) and cinnamaldehyde was tested against seven Gram negative and nine Gram positive fish pathogenic bacteria isolated from cultured olive flounder (Paralichthys olivaceus) in Korea. Disk diffusion assay, MIC (minimum inhibitory concentration) and MBC (minimum bactericidal concentration) tests were done. Cinnamon and cinnamaldehyde inhibited the growth of both Gram negative and Gram positive bacteria. Cinnamaldehyde showed lower MIC values than CEO which ranged from 0.001 to 0.015% (V/V). CEO (MBC/MIC 2-4) was bactericidal for all tested strains while cinnamaldehyde was bactericidal for all except 6 strains. For all fish pathogenic bacteria, the inhibition zone diameter (IZD) increased in proportion to the oil concentration and the maximum effect was found at 100% (V/V) concentration of CEO and cinnamaldehyde.  The antibiogram pattern indicated that all the bacterial strains excluding three strains of Streptococcus iniae(S186, S530 and S131) showed resistance to one or more antibiotics. Higher percentages of relative inhibition zone diameter (RIZD %) were exhibited at higher concentrations of CEO and cinnamaldehyde. Since antibacterial activities of CEO and cinnamaldehyde were considerably effective against fish pathogenic bacteria, these could be used as alternatives to treat bacterial infections in aquaculture.

scholarly journals ANTIBACTERIAL ACTIVITY OF CHITOSAN AND HYDROLYZED COCONUT OIL AND THEIR COMBINATION AGAINST BACILLUS CEREUS AND ESCHERICHIA COLI

2016 ◽  
Vol 9 (5) ◽  
pp. 69 ◽  
Author(s):  
Jansen Silalahi ◽  
Petrika Situmorang ◽  
Popi Patilaya ◽  
Yosy Ce Silalahi
Keyword(s):  
Escherichia Coli ◽  
Antibacterial Activity ◽  
Bacillus Cereus ◽  
Coconut Oil ◽  
Inhibition Zone ◽  
Research Centre ◽  
Virgin Coconut Oil ◽  
Inhibition Zone Diameter ◽  
E Coli ◽  
Zone Diameter

ABSTRACTObjective: The purpose of this study was to evaluate the antibacterial activity of chitosan, hydrolyzed coconut oil and their combination againstBacillus cereus and Escherichia coli.Methods: The materials used in this study were powder of chitosan (obtained from prawn shell produced by Laboratory of Research Centre FMIPAUniversity of Sumatera Utara) and virgin coconut oil (VCO) product of Siti Nurbaya-Indonesia. VCO was partially hydrolyzed by Lipozyme TL IM(active at sn-1,3 position) and the result called hydrolyzed virgin coconut oil (HVCO). The bacteria used in this study were B. cereus and E. coli. Theantibacterial activity of chitosan in 1% acetic acid and HVCO in dimethylsulfoxide was tested by Kirby–Bauer agar diffusion method using paper discwith diameter of 6 mm.Results: The results showed that the minimum inhibitory concentration of chitosan against B. cereus and E. coli is at concentration of 0.05% withinhibition zone diameter of 6.86 mm and 7.56 mm, respectively. MIC of HVCO against B. cereus is at concentration of 0.25% with inhibition zonediameter of 6.40 mm, and against E. coli is at a concentration of 0.50% with inhibition zone diameter of 6.20 mm. The inhibition zone diameter ofchitosan 0.05% and HVCO 0.25% in combination against B. cereus is 8.33 mm which is higher than half the sum of chitosan 0.05% and HVCO 0.25%(6.63 mm). The inhibition zone diameter of chitosan 0.05% and 0.5% HVCO in combination against E. coli is 8.53 mm which is higher than half thesum of chitosan 0.05% and HVCO 0.5% (6.53 mm).Conclusion: The findings of this study indicate that chitosan is more antibacterial than HVCO, and the interaction between chitosan and HVCO incombination demonstrated to be synergistic against B. cereus and E. coli.Keywords: Antibacterial, Chitosan, Coconut oil, Combination, Bacillus cereus, Escherichia coli.®

scholarly journals UJI EFEKTIVITAS DAUN PANDAN WANGI (PANDANUS AMARYLLIFOLIUS ROXB.) SEBAGAI ANTIBAKTERI TERHADAP SALMONELLA TYPHI

2019 ◽  
Vol 6 (1) ◽  
pp. 59
Author(s):  
Priska Nancy Claudia Bali ◽  
Ahmad Raif ◽  
Setia Budi Tarigan
Keyword(s):  
Antibacterial Activity ◽  
Ethyl Acetate ◽  
Pathogenic Bacteria ◽  
Ethyl Acetate Extract ◽  
Inhibition Zone ◽  
Salmonella Typhi ◽  
Inhibition Zone Diameter ◽  
Negative Controls ◽  
Pandanus Amaryllifolius ◽  
Positive Controls

Pandanus amaryllifolius roxb leaves commonly used as food dditives which contain various compound groups namely alkaloid, saponins, flavonoids and tannins that have a role in antibacterial activity. This research is indicated to support the success of antibacterial in fragrant pandanus leaf plants against Salmonella typhi, one of the pathogenic bacteria. The antibacterial effectiveness test of ethanol-ethyl acetate extract (1: 1) of pandanus leaves which evaluated by the Kirby-bauer method and making the extract concentrations of 25%, 50%, 75%, 100%. The results showed that pandanus leaves extract had antibacterial effectiveness against Salmonella typhi with an average inhibition zone diameter of 11.6 mm; 14 mm; 14.3 mm; 15.3 mm; positive controls (Ciprofloxacin) 27 mm; and negative controls (aquadest) didn’t produce the inhibition zone of Salmonella typhi.

Karakteristik Fisik dan Aktivitas Antibakteri Sabun Cair Minyak Nilam (Pogostemon cablin Benth.) yang Berbasis Surfaktan Sodium Lauril Eter Sulfat

2020 ◽  
pp. 1-10
Author(s):  
Yuni Anggraeni ◽  
Fakhrun Nisa' ◽  
Ofa Suzanti Betha
Keyword(s):  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Foam Height ◽  
Inhibition Zone ◽  
Positive Control ◽  
Centrifuge Test ◽  
Liquid Soap ◽  
Inhibition Zone Diameter ◽  
Zone Diameter ◽  
Pogostemon Cablin

Patchouli oil obtained from patchouli plants (Pogostemon cablin Benth.) has been widely used as an antibacterial agent in liquid and solid soap preparation. In this research, patchouli oil was added to liquid soap formula which use sodium lauryl ether sulphate (SLES) surfactant. The purpose of this study was to determine the physical characteristics and antibacterial activity of patchouli oil liquid soaps based on SLES surfactant. The Liquid soaps were prepared into four formulas with variation of patchouli oil concentration that were F0 (0.00% w/w), F1 (0.05% w/w), F2 (0.50% w/w), and F3 (1.00% w/w). The liquid soaps were evaluated including organoleptic, microscopic property, physical stability by using centrifuge test, pH, foam height and stability, viscosity and rheology, and antibacterial activity against Staphylococcus aureus ATCC 25923 by using disc diffusion method and chloramphenicol as a positive control. The results showed that all liquid soap formulas had following characteristics: translucent except F3 slightly murky, homogen, stable after centrifuge test, pH between 6.55 – 6.66 that were no significantly different and met SNI standards of liquid soap, foam height between 2.67 – 3.23 cm that were no significantly different and stable after 5 minutes of testing, viscosity between 2237 – 2397 cPs relatively equal in all formulas with pseudoplastic rheological properties. The patchouli oil liquid soaps had antibacterial activity against Staphylococcus aureus ATCC 25923, where F0, F1, F2, F3 and positive control result in inhibition zone diameter of 11.26±2.60 mm, 14.60 ± 2.45mm, 15.51 ± 0.44 mm, 17.97 ± 0.71 mm and 19.00 ± 3.92 mm respectively. Based on the ANOVA one way test, the addition of 1% patchouli oil gave a significant effect on the inhibition zone diameter compared to F0 (without patchouli oil)

scholarly journals Antibacterial Activity of Floral Petals of Some Angiosperms

2019 ◽  
pp. 1-5 ◽  
Author(s):  
L. Rajanna ◽  
N. Santhosh Kumar ◽  
N. S. Suresha ◽  
S. Lavanya
Keyword(s):  
Antibacterial Activity ◽  
Pathogenic Bacteria ◽  
Inhibition Zone ◽  
Bacterial Strains ◽  
Inhibitory Zone ◽  
Gram Positive ◽  
Gram Negative ◽  
E Coli ◽  
Antibacterial Assay

The in vitro antibacterial assay was carried out against both Gram positive (B. cerus and S. aureus) and Gram negative (E. coli and K. pneumoniae) bacteria. Floral petals of 20 different species of plants were collected and tested for antibacterial activity. The result showed that the petals were active against both Gram positive and Gram negative. Out of 20 floral petals tested, 19 floral petals exhibited antibacterial activity against selected bacterial strains. The minimal inhibitory zone of floral petal discs against human pathogenic bacteria varies from 2 – 6 mm. Rosa carolina and Ruellia tuberosa showed significance inhibition zone for all the bacterial strains while Lantana camara does not show inhibition zone for any of these pathogenic bacteria.

scholarly journals SKRINING FITOKIMIA DAN UJI AKTIVITAS ANTIBAKTERI EKSTRAK ETANOL DAUN RACUN AYAM (Brucea javanica [L.] Merr.) ASAL KALIMANTAN SELATAN

2021 ◽  
Vol 6 (1) ◽  
pp. 59-68
Author(s):  
Sutomo Sutomo ◽  
◽  
Arnida Arnida ◽  
Fahriah Fahriah
Keyword(s):  
Antibacterial Activity ◽  
Ethanol Extract ◽  
Inhibition Zone ◽  
Negative Control ◽  
Diffusion Method ◽  
Disk Diffusion Method ◽  
Inhibition Zone Diameter ◽  
E Coli ◽  
Zone Diameter ◽  
Brucea Javanica

Racun ayam is one of the plants which has several activities in its fruits, one of which is an antibacterial. This study aims to determine the antibacterial activity of ethanol extract of racun ayam leaves. The extraction was done by maceration method using ethanol as a solvent. Antibacterial activity assay was carried out on S. aureus, E. coli, and P. aeruginosa bacteria by disk diffusion method at the concentrations of 80, 100, and 120 ppm. The results showed that the ethanol extract of B. javanica leaves had the greatest inhibition zone on E. coli with inhibition zone diameter values ​​at 80, 100, and 120 ppm were 11.7 mm, 14.5 mm and 19.67 mm respectively. Inhibition zones in S. aureus could only be seen at 100 and 120 ppm which had inhibition zone diameters at 1.17 mm and 2.17 mm respectively, whereas in P. aeruginosa they did not have any inhibitory zone values. The results of statistical analysis showed a significance of the inhibition zone diameter values ​​of E. coli bacteria starting at 80 ppm with a sig value of 0.034. Due to a sig value was <0.05, it was categorized as significantly different from the negative control. The bacteria of S. aureus which had ​​<0.05 for sig values only found on 100 ppm and 120 ppm. Bacteria P. aeruginosa which had sig value >0.05 was not significantly different at all concentrations

scholarly journals Relationships of irrigation water and soil physical and chemical characteristics with yield, chemical composition and antimicrobial activity of Damask rose essential oil

PLoS ONE ◽  
2021 ◽  
Vol 16 (4) ◽  
pp. e0249363
Author(s):  
Mansureh Ghavam
Keyword(s):  
Antimicrobial Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Irrigation Water ◽  
Inhibition Zone ◽  
Rosa Damascena ◽  
Inhibition Zone Diameter ◽  
Zone Diameter ◽  
Aspergillus Brasiliensis ◽  
Damask Rose

Damask rose (Rosa damascena Mill.) is an aromatic medicinal plant rich in bioactive compounds with high value in the food, pharmaceutical and cosmetic industries. Knowledge of the factors affecting the quantitative and qualitative properties of the compounds in its essential oil (EO) and the bioactivity of this EO is important in optimizing Damask rose cultivation and production. This research studied, for the first time, the effects of irrigation water and soil chemical and physical characteristics on the EO yield of this important commercial species and on it chemical composition and antimicrobial activity. The results showed the significant effect of crop cultivation site on yield, chemical composition and inhibition zone diameter (IZD) at the 1% significance level. The highest EO yield (~0.0266%), which belonged to the Noushabad site (EON), resulted from the increased soil electrical conductivity (EC) and the higher sand, gypsum and lime contents and irrigation water salinity. Analysis of the chemical composition of the EOs showed that their main compounds at all three crop sites were citronellol, nonadecane, heneicosane and geraniol. The EO obtained from the Yazdel site (EOY) had the highest contents of citronellol and geraniol (~29.05% and ~6.85%) that were directly correlated with soil potassium and phosphorus contents and inversely correlated with soil acidity and EC and its lime, nitrogen, and organic carbon contents. Antimicrobial assays indicated that the EO extracted from the Sefidshahr site (EOS), which had the largest inhibition zone diameter (~14.67 mm) for Aspergillus brasiliensis (IZD~14.67 mm) and the lowest MIC (~31.25 μg/mL) for Staphylococcus aureus and Pseudomonas aeruginosa, exhibited efficacy similar to that of rifampin, probably due to the dominance of the alkanes in it. The EOY and EOS also exhibited the strongest inhibitory and lethal activity against Candida albicans (MIC and MBC <15.63 μg/mL for EOY and MIC and MBC = 62.5 μg/mL for EOS), which were six and four times stronger than those of nystatin, respectively. Therefore, the selected EOs can act as a potentially promising strategy for fighting microbial strains.

scholarly journals Antibacterial Activities from Gel Hand Sanitizer of Jatropha curcas Leaves Ethanolic Extract Against Staphylococcus aures ATCC 25923

2020 ◽  
Vol 1 (1) ◽  
pp. 6-11
Author(s):  
Erviana Vernanda Margaretha ◽  
Yohanes Juliantoni ◽  
Dyke Gita Wirasisya
Keyword(s):  
Antibacterial Activity ◽  
Jatropha Curcas ◽  
Food Contamination ◽  
Ethanolic Extract ◽  
Inhibition Zone ◽  
Antibacterial Activities ◽  
Diffusion Method ◽  
Inhibition Zone Diameter ◽  
Zone Diameter ◽  
Hand Sanitizer

Food borne disease is a disease with symptoms such as nausea, diarrhea and vomiting. The main cause of FBD was food contamination of Staphylococcus aureus. Jarak pagar (Jatropha curcas Linn) leave is a plant that have antibacterial activity against S. aureus because it contains saponin, flavonoid, and tannin. This research aimed to determine the antibacterial activity of the ethanolic extract of Jatropha curcas Linn. leaves, formulated them as gel hand sanitizer, and evaluated the antibacterial activity of the formula. The sample was collected, determined, and extracted with ethanol 70% using maceration, and the phytochemical screening conducted to the concentrate extract. The antibacterial activity test conducted by well diffusion method with concetration 50, 100, dan 150 mg/mL. Then the effective extract group has formulated to gel hand sanitizer. The gel hand sanitizer formula tested the antibacterial activity and physical properties by organoleptic, pH, stability, and spreadablility. The result showed that the extract with concentration 50, 100, dan 150 mg/mL has inhibition zone diameter was 9.9, 15.7, and 16.4 mm, respectively. The gel hand sanitizer of Jatropha curcas Linn extract was formulated by using 100 mg/mL concentration of extract. The gel was physically stable and had inhibition zone diameter was 15.6 mm

scholarly journals Use of metabolites of therapeutic Lactic acid bacteria to inhibit four species veterinary pathogenic bacteria

2005 ◽  
Vol 29 (2) ◽  
pp. 49-55
Author(s):  
Ali H. A . Hamid
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Pathogenic Bacteria ◽  
Lactobacillus Reuteri ◽  
Inhibition Zone ◽  
Culture Cell ◽  
Inhibition Activity ◽  
Inhibition Zone Diameter ◽  
Zone Diameter ◽  
Mrs Broth

This study aimed to detect metabolites inhibition activity for three therapeuticLactic acid bacteria Lactobacillus acidophilus (Lb. acid.) , Lactobacillus reuteri(Lb. reut.) and Bifidobacterium ssp. (Bif.) which were grown in whole milk andMan Reqosa and Sharp (MRS) broth as single or double (Lb. acid. + Bif.) ormixed (Lb. reut + Bif. + Lb. acid) culture Cell Free Extract (CFE) of theseculture which contained their metabolites of Lactic acid bacteria (exclusion Lb.reut.) showed good inhibition against four species of pathogenic Escherichiacoli ; Salmonella typhimurium ; Proteus volgaris and Staphylococcus aureus.inhibition activity against E. coli culture showed that 72 hours was the bestincubation time for Lactic acid bacteria to produce more metabolite with bestinhibition activity. Metabolite (CFE) of Lb. Acid culture grown in milk andMRS broth showed the best inhibition activity against all of Gram Positive andGram negative test bacteria with over all inhibition zone diameter was 14.6 and15.3 mm for milk and MRS broth supernatant respectively and this activityremained for more than one week as inhibition zone diameter were 13.4 and14.5 mm for supernatant of milk and MRS respectively.

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