نتایج جستجو برای: natural antibacterial substances

تعداد نتایج: 570279  

The edible mushrooms (basidomycetes) have high nutritional value, promote the immune system, and as a source of natural antimicrobial substances have been used to cure bacterial infections since ancient times.Various kinds of proteins with several biological activities are produced by mushrooms. In this research, in order to evaluate antibacterial activity of edible mushrooms, we isolated prote...

L. Delshad, M. Ghaedi M. Yousefi Nejad

Plants are rich source of natural products used for centuries to cure various the plant-derived medicines are based upon the premise that they contain natural substances that can promote health and alleviate illness. Silver NPs represent material, which can be used as a potential antibacterial agent in medical applications and different commercial products due to its biological activity. Recent...

Journal: :iranian journal of microbiology 0
mahdieh neghabi-hajiagha department of microbiology, school of medicine, tehran university of medical sciences, poorsina street, tehran, iran. atousa aliahmadi department of biology, medicinal plants and drugs research institute, shahid beheshti university. mohammad reza taheri department of phytochemistry, medicinal plants and drug research institute, shahid beheshti university, tehran, iran. alireza ghassempour department of phytochemistry, medicinal plants and drug research institute, shahid beheshti university, tehran, iran. gholamreza irajian department of microbiology, school of medicine, iran university of medical sciences, tehran, iran. hassan rezadoost department of phytochemistry, medicinal plants and drug research institute, shahid beheshti university, tehran, iran.

background and objectives: due to the importance of finding of new antibacterial agents, the antibacterial properties of prosopis cineraria aerial parts were investigated using a bioassay guided fractionation scheme. materials and methods: the organic extract was prepared via maceration in methanol, followed by the fractionation using n-hexane and ethyl acetate. the mics of fractions were deter...

2017

Biopreservation or biocontrol refers to the use of natural or controlled microbiota, or its antibacterial products to extend the shelf life and enhance the safety of foods (Stiles 1996 ). Since lactic acid bacteria (LAB) occur naturally in many food systems and have a long history of safe use in fermented foods, thus classed as Generally Regarded As Safe (GRAS), they have a great potential for ...

Journal: :Molecules 2013
Anna Kurek-Górecka Anna Rzepecka-Stojko Michał Górecki Jerzy Stojko Marian Sosada Grażyna Swierczek-Zieba

Propolis is a potential source of natural antioxidants such as phenolic acids and flavonoids. Its wide biological effects have been known and used since antiquity. In the modern world natural substances are sought which would be able to counteract the effects of antioxidative stress, which underlies many diseases, such as cancer, diabetes and atherosclerosis. This paper aims to present the anti...

The edible mushrooms (basidomycetes) have high nutritional value, promote the immune system, and as a source of natural antimicrobial substances have been used to cure bacterial infections since ancient times.Various kinds of proteins with several biological activities are produced by mushrooms. In this research, in order to evaluate antibacterial activity of edible mushrooms, we isolated prote...

2011
Stefan Bogdanov

Honey: This topic has been extensively reviewed by Bogdanov, online article with original references on www.bee-hexagon.net/files/file/fileE/Honey/7HoneyNutrientFunctional.pdf The antibacterial effect of honey, mostly against gram-positive bacteria, both bacteriostatic and bactericidal effects have been reported, against many strains, many of which are pathogenic. Honey glucose oxidase produces...

A. Ehsani, M. Hashemi,

Background: The presence of antibacterial drug residues in food caused many concerns for consumers. This study was designed to determine of antibacterial drug residues in commercial eggs distributed in Urmia, Iran.  Methods: Disc diffusion microbial inhibition test was performed using three media seeded with Bacillus subtilis at different pH values (6, 7.2 or 8) and a fourth medium seed...

Journal: :iranian journal of pharmaceutical research 0
f eftekhar f nariman z habibi n mohammadi

antibacterial activity of the aerial extracts from xanthium brasilicum prepared in methanol, diethyl ether, petroleum benzene and an equal mixture of the three solvents were studied against bacterial laboratory standards and clinical isolates using the disk diffusion method. the best antibacterial results were obtained when methanol or the solvent mixture was used. the crude extract with the hi...

2017
Zahra Golestannejad Shahin Gavanji Elmira Mohammadi Mehdi Bahrani Fatemeh Rezaei Behrouz Larki Amin Mojiri Azizollah Bakhtari

Background and aims: Tooth decay is one of the most common chronic diseases around the world and this problem is the result of variety of different bacteria. Streptococcus mutants is one of the most important bacteria which is related to this disease. Finding new effective antibacterial agents is an important area in bioscience for fighting and controlling bacterial infections. Essential oils a...

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