scholarly journals Vibriocidal Activity of Leaf and Rhizome Extracts of Maranta arundinacea L.

2018 ◽  
Author(s):  
Priyadarshani Samal ◽  
Priyaranjan Tripathy ◽  
Ritarani Das ◽  
Santi Lata Sahoo ◽  
Chinmay Pradhan ◽  
...  
Keyword(s):  
Inhibitory Concentration ◽  
Ethanolic Extract ◽  
Inhibition Zone ◽  
Inhibitory Effect ◽  
Leaf Extracts ◽  
Vibrio Cholera ◽  
Waterborne Pathogen ◽  
Vibrio Infection ◽  
Hexane Extracts

Globally, the gastroenteritis or diarrhoea has become a more significant problem today due to infection caused by foodborne/ waterborne pathogen Vibrio cholera. In this concern, an investigation was carried out to evaluate the vibriocidal potential of the different solvent extracts of leaf and rhizome of Maranta arundinacea under in vitro condition. For this, aqueous, methanolic, ethanolic and hexane extracts of both leaf and rhizome of M. arundinacea were tested against the pre-isolated strains of Vibrio cholerae such as SPAB1, SPAB4 and SPAB5  by agar well diffusion and minimum inhibitory concentration (MIC) method. All the solvent extracts of both leaf and rhizome were found to be active against the tried strains of V. cholera however, ethanolic extract showed maximum inhibitory effect against SPAB1 strain with an inhibition zone of 26.23 ± 0.53 mm (MIC of 80.00 ± 10.06 µg/ ml) and 24.27 ± 0.12 mm (MIC of 100.00 ± 12.82 µg/ ml) in rhizome and leaf samples, respectively. Then, the effectiveness was followed in SPAB4 and SPAB5 however, it was not much more significant to that of SPAB1. Therefore, it was suggested that the rhizome and leaf extracts which proved to be potentially effective can be used as the natural alternative for the treatment of diarrhoea caused by Vibrio infection.

Evaluation of Phytochemicals and Pharmacological Activities of Ben-Cha-Lo-Ka-Wi-Chian Remedy

2019 ◽  
Vol 891 ◽  
pp. 52-59
Author(s):  
Chanai Noysang ◽  
Teerarat Pummarin
Keyword(s):  
Antioxidant Activity ◽  
Minimum Inhibitory Concentration ◽  
Inhibitory Concentration ◽  
Propionibacterium Acnes ◽  
Ethanolic Extract ◽  
Inhibition Zone ◽  
Inhibitory Effect ◽  
Pharmacological Activities ◽  
Ethanolic Extracts ◽  
Reaction Test

Benchalokawichian (BLW) remedy is a Thai traditional medicine that has been notified in the List of Medicine Products of the National List of Essential Drugs A.D. 2006 and has long been used as an antipyretic. The phytochemicals of the 70% and 95% ethanolic extracts of were studied by color reaction test and HPTLC analysis. The BLW remedy showed a highest amounts of 70% ethanolic extractives (ca. 3.99 ± 0.60% of dry material weight). The several ethanolic extracts showed similar qualitative phytochemicals. The major of phytochemicals identified in these extracts were alkaloids, flavonoids, tannins, and polyphenols. The antioxidant activity was assessed using the 2,2-diphenyl-1-picrylhydrazyl assay. The analysed 70% ethanolic extract showed a highest antioxidant activity at IC50= 526.09 µg/ml and both extracts not showed tyrosinase inhibitory effect. The 95% ethanolic extract showed the greatest anti-propionibacterium acnes activity with inhibition zone of 10.10 ± 0.45 mm and minimum inhibitory concentration (MIC) was 5.05 mg/ml

scholarly journals Anti-bacterial Effect of Chrysophyllum albidum Phyto Extract

2019 ◽  
pp. 1-7
Author(s):  
I. A. Hassan ◽  
I. Abdulraheem ◽  
H. O. Emun ◽  
O. M. Omole
Keyword(s):  
Methanolic Extract ◽  
Ethanolic Extract ◽  
Positive Control ◽  
Human Consumption ◽  
Leaf Extracts ◽  
Traditional Use ◽  
Vibrio Cholera ◽  
Diffusion Technique ◽  
Bacterial Effect

Aims: This study was carried out to investigate the antimicrobial activity of Chrysophyllum albidum leaves extract on selected Gastro-instestinal bacteria such as Salmonella typhimurium, Shigella dysentariae, Vibrio cholera, Escherichia coli and Clostridium perfringens. Methodology: The leaves were extracted using ethanol, methanol and distilled water; the concentration of the extracts employed were 100 mg/ml, 200 mg/ml, 400 mg/ml and 500 mg/ml respectively; however the   leaf extracts of Chrysophyllum albidum were screened for anti-microbial activity using the in vitro cup-plate method of agar diffusion technique with concentration of 10-5cells/ml of the selected bacteria. Simultaneously, 30 µg tetracycline and 30 µg metronidazole were used as positive control. Results: The result showed that the most active among them is Tetracycline; followed by ethanolic extract, aqueous extract, methanolic extract and metronidazole extract respectively on the tested bacteria. Conclusion: This research justifies the traditional use of the leaves of Chrysophyllum albidum for the therapeutic purposes; hence can be commercialized by pharmaceutical outfit; if not for anything but its availability and readily for human consumption.

scholarly journals The Effect of Artichoke Ethanolic Extract on Antibiotic-Resistant Clinical Strains of Staphylococcus aureus Isolated from Women

2021 ◽  
Vol In Press (In Press) ◽  
Author(s):  
Bahman Fazeli-Nasab ◽  
Moharam Valizadeh ◽  
Maryam Beigomi
Keyword(s):  
Staphylococcus Aureus ◽  
Inhibitory Concentration ◽  
Ethanolic Extract ◽  
Lethal Effect ◽  
Inhibitory Effect ◽  
Diffusion Method ◽  
Resistance Pattern ◽  
Disk Diffusion Method ◽  
Antibiotic Resistant

Objectives: This study aimed to investigate the inhibitory and lethal effect of artichoke on pathogenic strains of Staphylococcus aureus and compare it with antibiotics in vitro. Methods: Ten strains of S. aureus were isolated from the vagina of women in Amir Al-Momenin Hospital of Zabol, Iran. The resistance pattern was determined by the disk diffusion method. Finally, the effect of the extract on bacteria was determined by the 96-well microplate method. Results: The results of the antibiotic resistance pattern showed that S. aureus samples had the highest resistance to oxacillin antibiotic and were sensitive to other antibiotics, and only one sample was sensitive to vancomycin antibiotic. The lowest inhibitory concentration of artichoke against S. aureus was 3.1 mg/mL, but five strains were inhibited at a concentration of 6.25 mg/mL. Conclusions: Ethanolic extract had a significant inhibitory effect on the growth of S. aureus pathogens. Further clinical research is necessary for clinical use of these extracts.

A comparative study of the antibacterial activity of Quercus robur (Ethanolic extract) and Zinc oxide nanoparticles on Salmonella (In vitro)

2018 ◽  
Vol 9 (SPL1) ◽  
Author(s):  
Hams H. H. Alfattli ◽  
Ghufran Zuhair Jiber ◽  
Ghaidaa Gatea Abbass
Keyword(s):  
Zinc Oxide ◽  
Antibacterial Activity ◽  
Zinc Oxide Nanoparticles ◽  
Quercus Robur ◽  
Ethanolic Extract ◽  
Inhibitory Effect ◽  
Significant Inhibition ◽  
Oxide Nanoparticles ◽  
Inhibition Zones

This study which designed to evaluate the inhibitory effect of Ethanolic extract of (Quercusrobur) and Zinc oxide nanoparticles on the growth of one genus of enterobacteriacae (Salmonella). In vitro. For this purpose graduate concentrates for plant extract (50, 100, 200, 400 )mg/ml which prepared and compared with Zinc oxide nanoparticles of different concentration (2, 1, 0.5, 0.25) μg/ml,and examined. The result showed that the studied medicinal plant has antibacterial activity against this bacteria which used. The result showed that the plant has good activity in decrease the growth of this bacteria. The results of the study also showed that the nano-ZnO has very effective antibacterial action against the studied bacteria which was Salmonella,nanoparticles concentrations lead to increasing in the inhibition zones of tested bacterial growth. We also study the effect of three antibiotics Lomefloxacin (LOM), Ciprofloxacin (SIP) and Rifampin (RA) and the result showed,in a comparison within the tested bacteria,Salmonella had a significant inhibition increase in Lomefloxacin ; the ciprofloxacin showed effect on tested bacteria. However,Rifampin does not show any effect on tested bacteria.

In Vitro Antibacterial activity of ethanolic extract of Myrsine africana against laboratory Strains of Pathogenic Organisms

2016 ◽  
Vol 5 (04) ◽  
pp. 4512
Author(s):  
Jackie K. Obey ◽  
Anthoney Swamy T* ◽  
Lasiti Timothy ◽  
Makani Rachel
Keyword(s):  
Antibacterial Activity ◽  
Minimum Inhibitory Concentration ◽  
Inhibitory Concentration ◽  
Ethanolic Extract ◽  
Ethanol Extract ◽  
E Coli ◽  
Zones Of Inhibition ◽  
In Vitro Antibacterial Activity ◽  
Myrsine Africana

The determination of the antibacterial activity (zone of inhibition) and minimum inhibitory concentration of medicinal plants a crucial step in drug development. In this study, the antibacterial activity and minimum inhibitory concentration of the ethanol extract of Myrsine africana were determined for Escherichia coli, Bacillus cereus, Staphylococcus epidermidis and Streptococcus pneumoniae. The zones of inhibition (mm±S.E) of 500mg/ml of M. africana ethanol extract were 22.00± 0.00 for E. coli,20.33 ±0.33 for B. cereus,25.00± 0.00 for S. epidermidis and 18. 17±0.17 for S. pneumoniae. The minimum inhibitory concentration(MIC) is the minimum dose required to inhibit growth a microorganism. Upon further double dilution of the 500mg/ml of M. africana extract, MIC was obtained for each organism. The MIC for E. coli, B. cereus, S. epidermidis and S. pneumoniae were 7.81mg/ml, 7.81mg/ml, 15.63mg/ml and 15.63mg/ml respectively. Crude extracts are considered active when they inhibit microorganisms with zones of inhibition of 8mm and above. Therefore, this study has shown that the ethanol extract of M. africana can control the growth of the four organisms tested.

scholarly journals In Vitro Effects of Doxycycline on Replication of Feline Coronavirus

Pathogens ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 312
Author(s):  
Magdalena Dunowska ◽  
Sayani Ghosh
Keyword(s):  
Inhibitory Concentration ◽  
Infectious Virus ◽  
Treatment Options ◽  
Inhibitory Effect ◽  
Virus Titration ◽  
Reverse Transcription Quantitative Pcr ◽  
In Vitro Effects ◽  
Dose Dependent ◽  
Feline Coronavirus

Feline infectious peritonitis (FIP) is a sporadic fatal disease of cats caused by a virulent variant of feline coronavirus (FCoV), referred to as FIP virus (FIPV). Treatment options are limited, and most of the affected cats die or are euthanized. Anecdotally, doxycycline has been used to treat FIP-affected cats, but there are currently no data to support or discourage such treatment. The aim of this study was to establish whether doxycycline inhibits replication of FIPV in vitro. The virus was cultured in Crandell-Rees feline kidney cells with various concentrations of doxycycline (0 to 50 µg/mL). The level of FIPV in cultures was determined by virus titration and FCoV-specific reverse-transcription quantitative PCR. Cell viability was also monitored. There was no difference in the level of infectious virus or viral RNA between doxycycline-treated and untreated cultures at 3, 12- and 18-hours post-infection. However, at 24 h, the growth of FIPV was inhibited by approximately two logs in cultures with >10 µg/mL doxycycline. This inhibition was dose-dependent, with inhibitory concentration 50% (IC50) 4.1 µg/mL and IC90 5.4 µg/mL. Our data suggest that doxycycline has some inhibitory effect on FIPV replication in vitro, which supports future clinical trials of its use for the treatment of FIP-affected cats.

scholarly journals In Vitro α-Glucosidase and α-Amylase Inhibitory Activities of Free and Bound Phenolic Extracts from the Bran and Kernel Fractions of Five Sorghum Grain Genotypes

Foods ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 1301
Author(s):  
Yun Xiong ◽  
Ken Ng ◽  
Pangzhen Zhang ◽  
Robyn Dorothy Warner ◽  
Shuibao Shen ◽  
...  
Keyword(s):  
Digestive System ◽  
Inhibitory Concentration ◽  
Inhibitory Effect ◽  
Inhibitory Effects ◽  
Phenolic Contents ◽  
Inhibitory Activities ◽  
Sorghum Grain ◽  
Global Health Challenge ◽  
Phenolic Extracts

Diabetes is a global health challenge. Currently, an effective treatment for diabetes is to reduce the postprandial hyperglycaemia by inhibiting the carbohydrate hydrolysing enzymes in the digestive system. In this study, we investigated the in vitro α-glucosidase and α-amylase inhibitory effects of free and bound phenolic extracts, from the bran and kernel fractions of five sorghum grain genotypes. The results showed that the inhibitory effect of sorghum phenolic extracts depended on the phenolic concentration and composition. Sorghum with higher phenolic contents generally had higher inhibitory activity. Among the tested extracts, the brown sorghum (IS131C)-bran-free extract (BR-bran-free, half-maximal inhibitory concentration (IC50) = 18 ± 11 mg sorghum/mL) showed the strongest inhibition against α-glucosidase which was comparable to that of acarbose (IC50 = 1.39 ± 0.23 mg acarbose/mL). The red sorghum (Mr-Buster)-kernel-bound extract (RM-kernel-bound, IC50 = 160 ± 12 mg sorghum/mL) was the most potent in inhibiting α-amylase but was much weaker compared to acarbose (IC50 = 0.50 ± 0.03 mg acarbose/mL).

scholarly journals THE EFFICACY OF AN INFUSION OF BINAHONG LEAVES (ANREDERA CORDIFOLIA (TEN.) STEENIS) AGAINST WILD STRAIN BLACK-PIGMENTED BACTERIA

2018 ◽  
Vol 9 ◽  
pp. 28
Author(s):  
Vivian Wijaya ◽  
Elizabeth Shinta Maharani ◽  
Harun Asyiq Gunawan ◽  
Ria Puspitawati
Keyword(s):  
Chronic Periodontitis ◽  
Inhibitory Concentration ◽  
Wild Strain ◽  
Inhibition Zone ◽  
Periodontal Pocket ◽  
Diffusion Test ◽  
Potential Efficacy ◽  
Pigmented Bacteria ◽  
Paper Disc

Objective: Black-pigmented bacteria represent one of the most prominent causes of chronic periodontitis. The objective of this study is to investigate the in vitro antibacterial effect of an infusion of binahong leaves (Anredera cordifolia (Ten.) Steenis) against black-pigmented bacteria.Methods: The black-pigmented bacteria were isolated from the periodontal pocket of a patient with chronic periodontitis. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) were determined by means of a dilution test using 105 cfu/ml of bacteria cultured on Brucella broth containing blood and kanamycin, which was exposed to a 20%, 30%, 40%, 50%, 65%, 80%, and 95% infusion of binahong leaves and then incubated for 24, 48, and 72 h. In the blank disc diffusion test, a 50%, 65%, 80%, 95%, and 100% infusion was dripped onto a paper disc placed at the center of a Brucella agar bacterial culture and then incubated for 24 h.Results: The MIC and MBC of the binahong leaf infusion were >65% and 80%, respectively, while the antibacterial activity was not correlated with the duration of the exposure to the infusion. The diffusion test showed that an increased concentration of the infusion resulted in an increased diameter of the inhibition zone that ranged from 0.42 mm (50% infusion) to 1.42 mm (100% infusion).Conclusion: Binahong leaves infusion has potential efficacy against black-pigmented bacteria

In-Vitro Studies on the Sensitivity of Staphylococcus aureus to Some Ethno-Medicinal Preparations Sold around Kano, Nigeria

2011 ◽  
Vol 4 (1) ◽  
pp. 22-25 ◽  
Author(s):  
M Bashir ◽  
I Yusuf ◽  
AS Kutama
Keyword(s):  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Minimum Inhibitory Concentration ◽  
Inhibitory Concentration ◽  
Test Organism ◽  
Ethanolic Extract ◽  
Screening Tests ◽  
Phytochemical Screening ◽  
Herbal Preparations

Five traditional herbal preparations were sampled between May-June, 2009 in Kano. The samples were investigated for invitro antibacterial activities against clinical isolates of Staphylococcus aureus. Likewise, phytochemical screening tests were conducted to determine some of the phytochemicals present in the ethanolic and water extracts of the samples. Various concentrations of the extracts were prepared using serial doubling dilutions (5000=l/ml, 2500=g/ml, 1250=g/ml, 625=g/ml and 312.5=g/ml). All the test extracts showed slight antibacterial activity against the test organism, with ethanolic extract of sample E having the highest zone diameter of inhibition, while sample H had the lowest diameter of inhibition. The standard antibiotic disc (Gentamicin) had demonstrated the highest activity on the test organisms. The results of the Phytochemical screening revealed the presence of steroid in all the samples, tannin in samples A, C, D and E, reducing sugars in sample A, D and E respectively. The result of the minimum inhibitory concentration (MIC) was found to be above 312.5=g/ml for samples C, D and E. Keywords: Staphylococcus aureus, Herbal preparations, antibacterial activity, Phytochemical screening and minimum inhibitory concentration.

scholarly journals The PHYTOCHEMICALS, ANTIOXIDANT AND ANTIMICROBIAL PROPERTIES OF Senna alata AND Senna tora LEAF EXTRACTS AGAINST BACTERIAL STRAINS CAUSING SKIN INFECTIONS

2019 ◽  
Vol 2 (1) ◽  
pp. 19
Author(s):  
Murni Halim
Keyword(s):  
Leaf Extract ◽  
Antimicrobial Properties ◽  
Inhibition Zone ◽  
Antimicrobial Activities ◽  
Diffusion Method ◽  
Bacterial Strains ◽  
Leaf Extracts ◽  
Natural Drugs ◽  
Senna Alata

A study was carried out to screen for phytochemical constituents and assess the antioxidant and antimicrobial activities of Senna alata and Senna tora leaf extracts. The leaves were first dried at room temperature and 50°C in an oven prior to solvent extraction using ethanol and methanol. The in-vitro qualitative assays showed that both S. alata and S. tora leaf extracts contained bioactive and secondary metabolites components such as tannins, steroids, saponin, terpenoids, glycosides, flavonoids and phenols. The antioxidant activity and capacity test were carried out by conducting free radical of 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging activity and Ferric reduction antioxidant plasma (FRAP) assays. Both assays showed S. tora leaf extract has higher antioxidant capacity than S. alata leaf extract. The efficacy of these leaf extracts were tested against skin pathogens through agar well diffusion method. S. alata extract showed an inhibition zone (1.15 – 1.59 mm) against Pseudomonas aeruginosa while S. tora extracts exhibited a strong antimicrobial activity against S. epidermidis (inhibition zone of 12 – 16.94 mm) followed by P. aeruginosa (inhibition zone of 1 – 1.59 mm). Nonetheless, no inhibition zone was observed for S. aureus by both leaf extracts. The phytochemicals and antioxidant constituents as well as inhibitory potential on skin pathogens possessed by S. alata and S. tora leave highlighted their potential utilization in the development of natural drugs or cosmetics to treat skin related diseases or infections.

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