Phytochemical analysis and antibacterial activity of Gentiana macrophylla extract against bacteria isolated from burn wound infections

2018 ◽  
Vol 114 ◽  
pp. 25-28 ◽  
Author(s):  
Chaohong Yin ◽  
Longwei Xie ◽  
Yun Guo
Keyword(s):  
Antibacterial Activity ◽  
Phytochemical Analysis ◽  
Wound Infections ◽  
Burn Wound ◽  
Gentiana Macrophylla

Antibacterial activity of chitosan-based nanohybrid membranes against drug-resistant bacterial isolates from burn wound infections

2021 ◽  
Author(s):  
Pouya Amiri ◽  
Jalil Kardan-Yamchi ◽  
Hossein Kazemian ◽  
Faranak Rezaei
Keyword(s):  
Antibacterial Activity ◽  
Wound Dressing ◽  
Antibacterial Effect ◽  
Antibacterial Efficacy ◽  
Drug Resistant ◽  
Wound Infections ◽  
Bacterial Isolates ◽  
Burn Wound ◽  
Vancomycin Resistant ◽  
Application Prospects

Abstract Biocompatible and non-toxic properties of chitosan make it a candidate with excellent application prospects in developing wound dressing conjugate compounds. Six different chitosan-based nanohybrid membranes were evaluated against multi-drug resistant bacterial isolates. Twenty-seven drug-resistant Staphylococcus aureus, Enterococcus faecalis, Acinetobacter baumannii, and Pseudomonas aeruginosa species were isolated from burn wound infections. Different combinations of chitosan, ciprofloxacin (CIP), biofunctionalized montmorillonite (MMT), and montmorillonite with sulfate chains (SMMT) were provided, and their antibacterial activity was assessed using the colony count method. Six Methicillin-resistant S. aureus, seven vancomycin-resistant E. faecalis, four A. baumannii, and 10 P. aeruginosa multi-drug resistant were identified. Chitosan and montmorillonite did not show significant antibacterial effect but, chitosan/SMMT/CIP was the most effective nanocomposite. Chitosan-based nanocomposites with ciprofloxacin could effectively reduce the susceptibility of drug-resistant bacterial isolates. Bacterial targeting using nanosystems provides an opportunity for effective antibiotic treatment by improving antibacterial efficacy.

scholarly journals The Design, Characterization and Antibacterial Activity of Heat and Silver Crosslinked Poly(Vinyl Alcohol) Hydrogel Forming Dressings Containing Silver Nanoparticles

Nanomaterials ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 96
Author(s):  
John Jackson ◽  
Helen Burt ◽  
Dirk Lange ◽  
In Whang ◽  
Robin Evans ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Silver Nitrate ◽  
Vinyl Alcohol ◽  
Unmet Need ◽  
Chemical Characterization ◽  
Wound Dressings ◽  
Poly Vinyl Alcohol ◽  
Burn Wound

The prompt treatment of burn wounds is essential but can be challenging in remote parts of Africa, where burns from open fires are a constant hazard for children and suitable medical care may be far away. Consequently, there is an unmet need for an economical burn wound dressing with a sustained antimicrobial activity that might be manufactured locally at low cost. This study describes and characterizes the novel preparation of a silver nitrate-loaded/poly(vinyl alcohol) (PVA) film. Using controlled heating cycles, films may be crosslinked with in situ silver nanoparticle production using only a low heat oven and little technical expertise. Our research demonstrated that heat-curing of PVA/silver nitrate films converted the silver to nanoparticles. These films swelled in water to form a robust, wound-compatible hydrogel which exhibited controlled release of the antibacterial silver nanoparticles. An optimal formulation was obtained using 5% (w/w) silver nitrate in PVA membrane films that had been heated at 140 °C for 90 min. Physical and chemical characterization of such films was complemented by in vitro studies that confirmed the effective antibacterial activity of the released silver nanoparticles against both gram positive and negative bacteria. Overall, these findings provide economical and simple methods to manufacture stable, hydrogel forming wound dressings that release antibiotic silver over prolonged periods suitable for emergency use in remote locations.

Identification of Secondary Metabolites and Antibacterial Activity of Non Polar Fraction from Heterotrigona itama Propolis

2021 ◽  
Vol 2 (1) ◽  
pp. 23-33
Author(s):  
Abdul Aziz ◽  
Veggy Nadya Yuliawan ◽  
Paula Mariana Kustiawan
Keyword(s):  
Antibacterial Activity ◽  
Methanol Extract ◽  
Phenolic Content ◽  
Polar Fraction ◽  
Hexane Fraction ◽  
Diffusion Method ◽  
Total Phenolic ◽  
Phytochemical Analysis ◽  
Phytochemical Content ◽  
Color Changes

Propolis is one of the natural products produced by kelulut bees and is still not widely used. The type of stingless bee that is the prima donna in the community is Heterotrigona itama. This study aims to determine the phytochemical content of the n-hexane fraction of Heterotrigona itama bee propolis collected from Kutai Kartanegara, East Kalimantan. The n-hexane fraction was obtained from the methanol extract of H. itama propolis by the liquid-liquid partition method. After obtaining the n-hexane fraction, the research continued with a qualitative phytochemical test to identify the compound and determine total phenolic. Antibacterial activity was determined by the agar well diffusion method with a serial concentration in Escherichia coli bacteria. Qualitative phytochemical analysis in the form of color changes showed that the n-hexane fraction of H. itama propolis contained flavonoids, alkaloids, saponins, and tannins. Based on the results, the total phenolic content of the n-hexane fraction sample was 490 mgGAE/100 g. It caused the n-hexane fraction to have lower phenolic content than the methanol extract (792 mg GAE100 g). Furthermore, this result indicated that the non-polar fraction was not substantial enough to extracted phenolic compounds. It correlated to the antibacterial activity of the n-hexane fraction, which was very weak (2  mm ± 1.5) at  200µg/mL concentration.

scholarly journals PHYTOCHEMICAL ANALYSIS AND ANTIBACTERIAL ACTIVITY OF SWIETENIA MAHAGONI – A HIGHLY MEDICINAL PLANT IN INDIA

2016 ◽  
Vol 9 (6) ◽  
pp. 62
Author(s):  
Dhanapaul Vinoth Kumar
Keyword(s):  
Antibacterial Activity ◽  
Bacillus Subtilis ◽  
Leaf Extract ◽  
Phytochemical Analysis ◽  
Zone Of Inhibition ◽  
Volatile Oils ◽  
Medicinal Uses ◽  
Antibacterial Study ◽  
Active Constituents ◽  
Swietenia Mahagoni

The present study was designed to evaluate the phytochemical analysis and antibacterial activity of Swietenia mahagoni leaf extract. The leaf extract was subjected to a variety of phytochemical analysis. The qualitative phytochemical tests exhibited the presence of common phytocompounds like alkaloids, tannins, saponins, phlobatannins, flavanoids, terpenoids and volatile oils as major active constituents. The plant (Swietenia mahagoni) leaf has valuable medicinal uses, hence petroleum ether (18.2g) was found to be a good solvent for the phytochemical and antibacterial study. Similarly, the Methanolic leaf extract of Swietenia mahagoni has highest zone of inhibition on Bacillus subtilis.

scholarly journals EVALUATION OF ANTIOXIDANT AND ANTIBACTERIAL ACTIVITY OF GLYCYRRHIZA GLABRA ROOT EXTRACTS

2020 ◽  
pp. 166-170
Author(s):  
SHUSHIL BHUSAL ◽  
KHAGA RAJ SHARMA
Keyword(s):  
Antibacterial Activity ◽  
Bacillus Subtilis ◽  
Bacterial Infections ◽  
Plant Secondary Metabolites ◽  
Glycyrrhiza Glabra ◽  
Antioxidant Potential ◽  
Diffusion Method ◽  
Phytochemical Analysis ◽  
Meoh Extract ◽  
Etoac Fraction

Objectives: The present study was designed to investigate the phytochemical analysis, antioxidant potential, and antibacterial activities of the traditionally used medicinal plant Glycyrrhiza glabra. Methods: The plant secondary metabolites were extracted through cold percolation using methanol (MeOH) as a solvent. The MeOH extract was further fractionated in different solvents in increasing order of polarity. The antioxidant activity was evaluated by 2,2-diphenyl-1-picrylhydrazyl assay. The antibacterial activity was studied by agar well diffusion method. Results: The antioxidant potential IC50 was found 43.13, 104.83, and 200.11 μg/ml for ethyl acetate (EtOAc), MeOH, and chloroform (CHCl3) extracts, respectively. The EtOAc fraction showed the potent antioxidant with IC50 43.13 μg/ml compared to the standard ascorbic acid 58.76 μg/ml. The antimicrobial activity exhibited by MeOH extract against Bacillus subtilis (ATCC 6051) and Staphylococcus aureus (ATCC 6538P) zone of inhibition was 18 mm and 17 mm, for chloroform extracts 15 mm and 13 mm, and for EtOAc fraction 11 mm against Bacillus subtilis. The highest dilution that yielded no single bacteria colony on the nutrient agar plates for Bacillus subtilis and S. aureus of MeOH extract was found 0.39 mg/ml and 6.25 mg/ml, for chloroform extract 3.125 mg/ml and 6.25 mg/ml and EtOAc fraction against Bacillus subtilis was 12.50 mg/ml as minimum bactericidal concentration. Conclusion: The plant extracts showed potent antioxidant and antibacterial activity. The results support for using the G. glabra in bacterial infection which provides partial scientific validation for using the plant against bacterial infections.

Sign in / Sign up

Export Citation Format

Share Document