scholarly journals Antibacterial Properties of Melanoidins Produced from Various Combinations of Maillard Reaction against Pathogenic Bacteria

2021 ◽  
Author(s):  
Satoshi Kukuminato ◽  
Kento Koyama ◽  
Shigenobu Koseki
Keyword(s):  
Amino Acids ◽  
Antimicrobial Activity ◽  
Maillard Reaction ◽  
Pathogenic Bacteria ◽  
Reducing Sugars ◽  
Antibacterial Properties ◽  
Antimicrobial Effect

Although the antimicrobial effect of melanoidins has been reported in some foods, there have been few comprehensive investigations on the antimicrobial activity of combinations of reaction substrates of the Maillard reaction. The present study comprehensively investigated the potential of various combinations of reducing sugars and amino acids. Because the melanoidins examined in this study were produced simply by heating in an autoclave at 121°C for 60 min, the of the targeted melanoidins can be easily produced.

scholarly journals Synthesis and Antimicrobial Activity of Silver-Doped Hydroxyapatite Nanoparticles

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Carmen Steluta Ciobanu ◽  
Simona Liliana Iconaru ◽  
Mariana Carmen Chifiriuc ◽  
Adrian Costescu ◽  
Philippe Le Coustumer ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Pathogenic Bacteria ◽  
Antimicrobial Agents ◽  
Antibacterial Properties ◽  
Major Health Problem ◽  
Major Health ◽  
Wall Structures ◽  
Nanocrystalline Hydroxyapatite ◽  
Qualitative Assay ◽  
Antibacterial And Antifungal

The synthesis of nanosized particles of Ag-doped hydroxyapatite with antibacterial properties is of great interest for the development of new biomedical applications. The aim of this study was the evaluation ofCa10−xAgx(PO4)6(OH)2nanoparticles (Ag:HAp-NPs) for their antibacterial and antifungal activity. Resistance to antimicrobial agents by pathogenic bacteria has emerged in the recent years and became a major health problem. Here, we report a method for synthesizing Ag doped nanocrystalline hydroxyapatite. A silver-doped nanocrystalline hydroxyapatite was synthesized at 100°C in deionised water. Also, in this paper Ag:HAp-NPs are evaluated for their antimicrobial activity against Gram-positive and Gram-negative bacteria and fungal strains. The specific antimicrobial activity revealed by the qualitative assay is demonstrating that our compounds are interacting differently with the microbial targets, probably due to the differences in the microbial wall structures.

Research on Antimicrobial Activity of Functional Protein Films

2013 ◽  
Vol 785-786 ◽  
pp. 660-665 ◽  
Author(s):  
Zhi Ying Huang ◽  
Qiao Lei ◽  
Jian Qiang Bao ◽  
Qian Nan Xun
Keyword(s):  
Escherichia Coli ◽  
Antimicrobial Activity ◽  
Pathogenic Bacteria ◽  
Antimicrobial Agents ◽  
Antimicrobial Effect ◽  
Potassium Sorbate ◽  
Protein Films ◽  
Functional Protein ◽  
Elongation At Break ◽  
Mechanical And Physical Properties

Antimicrobial effect of functional protein films incorporating garlic oil (GO), potassium sorbate (PS) and nisin (N) at various concentrations were discussed. This activity was tested against food pathogenic bacteria namely Escherichia coli (E.coli) and Staphylococcus aureus (S.aureus).Mechanical and physical properties were characterized. In the range of antimicrobial agents concentration studied, tensile strength (TS) and elongation at break (E) of functional protein films were changed by incorporating GO,PS and N. And the WVP value of functional protein films decreased as antimicrobial agents added. GO incorporated into protein films had no effect on E.coli, but incorporation of GO at 300μl had antimicrobial activity against S.aureus. Protein films incorporated with PS showed antimicrobial activity against S.aureus, but there was no effect on E.coli. Incorporation of N at the lowest level of 25,000 IU had antimicrobial activity against both E.coli and S.aureus.

scholarly journals Antibacterial Effects of Oak Fruit, Jaft, and Jaftex Herbal Mouthwash: A Review

2019 ◽  
Author(s):  
Maria Cheraghi ◽  
Fatemeh Babadi
Keyword(s):  
Antimicrobial Activity ◽  
Pathogenic Bacteria ◽  
Web Of Science ◽  
Antibacterial Properties ◽  
Antimicrobial Properties ◽  
Antibiotic Sensitivity ◽  
Antibacterial Activities ◽  
Antibacterial Effects ◽  
Digital Literature ◽  
Review Study

Abstract Recently, natural products have been evaluated as a source of antimicrobial agent with efficacies against a variety of microorganisms. The antibacterial activities of the oak fruit,inner husk of oak fruit (Jaft), and Jaftex mouthwash have been studiedin several studies. Thisstudy aimedto review the studies ofthe effects of antibacterial properties of the oak fruit, oak fruit hull (Jaft), and Jaftex mouthwash. Materials and Methods In this review study, relevant articles related to the antimicrobial activity of the oak fruit, inner husk of oak fruit (Jaft), and 'Jaftex mouthwash' were searched from the current digital literature using electronic databases namely, SID, ScienceDirect, PubMed, Google Scholar, Magiran, Web of Science employing the same keywords from 1990 to 2019. Results Oakfruit, inner husk of oak fruit (Jaft), and Jaftex mouthwash have antimicrobial properties against many microorganisms. Discussion and Conclusion Antibacterial properties of oak fruit, inner husk ofoak fruit (Jaft) can be used to reverse the antibiotic sensitivity against pathogenic bacteria. Jaftex is recommended as an antibacterial and anti-plaque mouthwash.

scholarly journals Antimicrobial effect of natural kinds of toothpaste on oral pathogenic bacteria

2021 ◽  
Vol 15 (10) ◽  
pp. 1436-1442
Author(s):  
Serdar Demir ◽  
Gul Keskin ◽  
Nese Akal ◽  
Yasemin Zer
Keyword(s):  
Antimicrobial Activity ◽  
Adverse Effects ◽  
Pathogenic Bacteria ◽  
Natural Kinds ◽  
Aloe Vera ◽  
Antimicrobial Effect ◽  
Diffusion Method ◽  
Oral Pathogens ◽  
Inhibition Zones ◽  
Agar Well Diffusion Method

Introduction: Because of the adverse effects on human health of some antimicrobial ingredients in traditional toothpaste, consumers are increasingly turning to toothpastes with natural ingredients. This study evaluates the antimicrobial effect of toothpastes containing different natural active agents against three oral pathogens: Streptococcus mutans, Streptococcus sanguinis, and Enterococcus faecalis. Methodology: This study tested one traditional toothpaste and seven different natural toothpastes containing theobromine, aloe vera, miswak, propolis, chitosan, enzymes and probiotics. The agar-well diffusion method was used to test the antimicrobial effect. Inhibition zones formed around toothpastes after 24 hours of incubation were measured and the data collected were statistically analyzed. Results: Toothpastes containing theobromine and chitosan and the traditional toothpaste showed antimicrobial efficacy for all tested bacteria. Toothpastes containing aloe vera, miswak, and propolis were only effective on S. mutans, while toothpastes containing probiotics and enzymes did not show any antimicrobial effect on the bacteria. Among toothpastes with natural ingredients, the theobromine-containing toothpaste showed the highest efficacy on S. mutans, while the aloe vera- and propolis-containing toothpastes had the lowest efficacy (p < 0.05). Conclusions: Theobromine- and chitosan-containing toothpastes, which showed antimicrobial activity against all bacteria, can be recommended as alternatives to traditional toothpastes.

scholarly journals Determination of Antimicrobial Activity of Different Essential Oils Obtained from Plants on Staphylococcus aureus Strains Isolated from Foods

2020 ◽  
Vol 8 (4) ◽  
pp. 1012-1017 ◽  
Author(s):  
Hacer Aslan Canberi ◽  
Esra Şentürk ◽  
Simge Aktop ◽  
Pınar Şanlıbaba
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oils ◽  
Pathogenic Bacteria ◽  
Antimicrobial Effect ◽  
Diffusion Method ◽  
Thyme Oil ◽  
Staphyloccocus Aureus ◽  
Hypericum Perforatum L ◽  
Different Strains

Essential oils (EOs) are known for its antimicrobial activity against several pathogenic bacteria. The present work evaluated the antimicrobial activity of 15 different EOs on survival of different strains of different Staphyloccocus aureus strains isolated from traditional cheeses by disc diffusion method. The most antimicrobial activity on the strains was found as oil thyme oil (mean zone diameter 23.203 mm). Clove oil and black seed oil had the highest antimicrobial activity after thyme oil with average zone diameters of 13.698 mm and 11.267 mm respectively. Hypericum perforatum L. oil (mean zone 6.209 mm), ginger oil (mean zone 6.250 mm) and garlic oil (mean zone 6.267 mm) were the lowest antimicrobial activity. New studies about antimicrobial effect of EOs in vivo conditions are recommended.

scholarly journals Evaluation of antimicrobial activity of three important medicinal plants of South India

2019 ◽  
Vol 8 (1) ◽  
pp. 3484
Author(s):  
Gopalakrishnaiah B. ◽  
Aniel Kumar O.
Keyword(s):  
Antimicrobial Activity ◽  
Medicinal Plants ◽  
Pathogenic Bacteria ◽  
Antimicrobial Agents ◽  
Antimicrobial Properties ◽  
Development Program ◽  
Antimicrobial Effect ◽  
Trichophyton Mentagrophytes ◽  
Crude Extracts ◽  
The World

India is found to be a country with rich biodiversity and enormous treasure of herbal plants and consequently called as medicinal garden of the world. Plants are the richest source of natural antimicrobial agents. In recent years drug resistance to human pathogenic bacteria has been commonly reported from all over the world. Therefore, there is a need to develop alternative antimicrobial drugs for the treatment of infectious diseases; one approach is to screen local medicinal plants for possible antimicrobial properties. The present study was designed to evaluate the antimicrobial efficacy of hexane, chloroform and methanol crude extracts of the leaves of three important medicinal plants viz., Biophytum sensitivum (L.) DC, Bougainvillea spectabilis L. and Caesalpinia bonducella (L.) Fleming, collected from in and around Visakhapatnam District. The antimicrobial activity of the crude extracts was tested against three Gram Positive bacteria (Bacillus subtilis MTCC 441, Enterococcus faecalis MTCC 439, Staphylococcus aureus MTCC 737), Three Gram Negative bacteria (Escherichia coli MTCC 443, Proteus vulgaris MTCC 426 and Pseudomonas aeruginosa MTCC 1688) and three Fungal strains (Candida albicans MTCC 227, Epidermophyton floccosum MTCC 613 and Trichophyton mentagrophytes MTCC 7687) using agar well diffusion assay. Our results demonstrated that methanol extracts of these plants leaves have concentration dependent antibacterial activity against some of the tested organisms. Further studies should be undertaken to elucidate the exact mechanism of action of antimicrobial effect to identify the active ingredients which can be used for drug development program.

scholarly journals In Vitro Assessment for Antimicrobial Activity of Lactobacillus Helveticus and its Natural Glycopeptides Against Mastitis Causing Pathogens in Dairy Cat

2015 ◽  
Vol 9 (1) ◽  
pp. 61-66 ◽  
Author(s):  
Gundega Gulbe ◽  
Anda Valdovska ◽  
Vaira Saulite ◽  
Jevgenijs Jermolajevs
Keyword(s):  
Antimicrobial Activity ◽  
Lactic Acid ◽  
Pathogenic Bacteria ◽  
Antimicrobial Effect ◽  
Lactobacillus Helveticus ◽  
Haemolytic Activity ◽  
Pathogenic Microorganisms ◽  
Bacterial Strains ◽  
Coagulase Negative Staphylococci

Probiotic lactic acid bacteria have a great potential to control bovine mastitis as well as they are favourable choice to treat many infectious diseases of human. These bacteria are well known as having many properties which make them beneficial to control pathogenic microorganisms. These include, the ability to adhere to cell, the reduction of pathogenic bacteria adherents, the co–aggregation, the production of organic acids, hydrogen peroxide, bacteriocin and etc., to be safe and non–pathogenic, which antagonize pathogenic microorganisms. However, each strain must be well identified and characterized in vitro before using for disease treatment. The aim of the present study was to screen three kind of test suspensions: TS1, TS2 and TS3, which contains probiotic lactic acid bacterium Lactobacillus helveticus or its natural glycopeptides, and other natural immunomodulators, in order to investigate which content were the most effective in inhibiting several mastitis causing bacteria in dairy cattle: coagulase–positive Staphylococcus aureus, coagulase–negative staphylococci S. haemolyticus, S. saprophyticus, S. simulans, S. vitulinus, and Gram–negative bacteria Citrobacter freundii and Serratia liquefaciens. Test suspensions TS1, TS2 and TS3 were adjusted by pH 6.3, then tested in vitro by well diffusion assay to determine their antimicrobial effect against bacteria. Furthermore haemolytic activity of applied test suspensions were determined. In results TS1 (9-13 mm) and TS2 (10-15 mm) showed the inhibition effect on four of eight tested bacterial strains, whereas TS3 did not displayed any antimicrobial effect. TS2 have a greatest antimicrobial activity as they resulted in the largest inhibition zones.

scholarly journals IN VITRO ANTIMICROBIAL ACTIVITY OF SOME ESSENTIAL OILS AGAINST BACTERIAL PATHOGENS CAUSING SKIN DISEASES IN VAPOR PHASE

2019 ◽  
pp. 113-115
Author(s):  
PURIT PATTANAPANIT ◽  
SUNISA MITHONGLANG ◽  
SUNITA MITHONGLANG ◽  
SURACHAI TECHAOEI
Keyword(s):  
Antimicrobial Activity ◽  
Antibacterial Activity ◽  
Essential Oil ◽  
Essential Oils ◽  
Pathogenic Bacteria ◽  
Antibacterial Properties ◽  
Diffusion Method ◽  
Syzygium Aromaticum ◽  
Aromatic Plants ◽  
Volatile Oils

Objective: The objective of this study was to evaluate the antimicrobial activity of volatile oils from aromatic plants against pathogenic bacteria.Methods: Thai aromatic plants such as Pogostemon cablin (Blanco) Benth (Patchouli oil), Cymbopogon nardus Rendle (Citronella grass oil), Pelargoniumroseum (Geranium oil), Syzygium aromaticum (L.) Merrill and Perry (clove oil), Cinnamomum spp.(cinnamon oil), and Cymbopogon citratus (DC.) Stapf.(lemongrass oil) were selected. Essential oils were obtained by water distillation and were stored at 4°C until use. Five human pathogenic bacteria wereobtained from Thai traditional Medicine College, Rajamangala University of Technology, Staphylococcus epidermidis, Escherichia coli, Staphylococcusaureus, methicillin-resistant S. aureus (MRSA), and Pseudomonas aeruginosa. The antibacterial activity of volatile oils was determined by disc-diffusionassay. Minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of each essential oil were determined.Results: Our study showed that 10% of essential oil from Cinnamomum spp. was the most potential against S. aureus, MRSA, and E. coli when assayedby disc-diffusion method with inhibition zones ranging from 37.66±0.57 to 45.33±1.15 mm and from 29.33±0.57 to 36.00±1.00 for lemongrass oilwith MIC and MBC of 1.25%.Conclusion: From this study, it can be concluded that some essential oils have potential antibacterial activity. The present investigation providessupport to the antibacterial properties of essential oils and will be applied to health-care product as aroma antibacterial products.

scholarly journals Antimicrobial Activity of Se-Nanoparticles from Bacterial Biotransformation

Fermentation ◽  
2021 ◽  
Vol 7 (3) ◽  
pp. 130
Author(s):  
Meyli Claudia Escobar-Ramírez ◽  
Araceli Castañeda-Ovando ◽  
Emmanuel Pérez-Escalante ◽  
Gabriela Mariana Rodríguez-Serrano ◽  
Esther Ramírez-Moreno ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Pathogenic Bacteria ◽  
Negative Charge ◽  
Antibacterial Properties ◽  
Growth Conditions ◽  
Bacteria Growth ◽  
Microbial Inhibition ◽  
Wide Range ◽  
Main Factors ◽  
Biological Methods

Selenium nanoparticles (SeNPs) are gaining importance in the food and medical fields due to their antibacterial properties. The microbial inhibition of these kinds of particles has been tested in a wide range of Gram (+) and Gram (−) pathogenic bacteria. When SeNPs are synthesized by biological methods, they are called biogenic SeNPs, which have a negative charge caused by their interaction between surface and capping layer (bioorganic material), producing their high stability. This review is focused on SeNPs synthesis by bacteria and summarizes the main factors that influence their main characteristics: shape, size and surface charge, considering the bacteria growth conditions for their synthesis. The different mechanisms of antimicrobial activity are revised, and this review describes several biosynthesis hypotheses that have been proposed due to the fact that the biological mechanism of SeNP synthesis is not fully known.

scholarly journals Interaksi Ekstrak Etanol Biji Nigella sativa Terhadap Bakteri Probiotik dan Patogen

2012 ◽  
Vol 2 (1) ◽  
Author(s):  
Ahmad Shobrun Jamil
Keyword(s):  
Antimicrobial Activity ◽  
Pathogenic Bacteria ◽  
Solid Medium ◽  
Nigella Sativa ◽  
Health Effect ◽  
Antimicrobial Effect ◽  
Inhibitory Effect ◽  
Semi Solid ◽  
Nigella Sativa Seed ◽  
Lactobacillus Spp

Nigella sativa seed has a lot of beneficial health effect, such as immune-modulator, anti-histamine, anti-diabetic, anti-hypertension, anti-inflammatory, anti-microbes and antitumor. Numeral antimicrobial effect of Nigella sativa has been published, but only a few number of the information of the antimicrobial activity to the probiotic bacteria such as from the genus of Lactobacillus spp. However this research focused on the selectivity of the antimicrobial activity of N. sativa extract to the probiotic and pathogenic bacteria. This research begins with the extraction of N. sativa seed powder by ethanol 80% 1:3 (w/v). With rotary evaporator the macerates extracted till gained semi solid extract. In the other side probiotic and pathogenic bacteria broth cultures were prepared. Extract resoluted with concentration 5%; 2,5%; 1,25% and 0,625%. Into the extract were submerged some disk paper with 6 mm diameter. After that the disk put on to the solid medium were had cultured by bacteria then incubated overnight. The diameters of the clearing zone that seemed then measured. The result showing that the inhibitory zone occurred at 0,625% concentration. After general analysis there is no significant different inhibitory effect of the extract to the tested bacteria, but from the statistical analysis known that probiotik bacteria seemed more sensitive than pathogenic bacteria were tested.

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