procedures, but it may not be due to their rarity. Under the present circumstance, it may be worthy to report the writers' results of screening antiviral substances. In this paper, the methods of searching antiviral substances produced by streptomyces, as well as the description of a new antiviral antibiotic, achromoviromycin, are presented. Screening of antiviral substance produced by streptom...

BACKGROUND Many natural substances are classified as dangerous substances according to the European regulation on classification and labelling. Are they used in natural personal care products today? One hundred ingredient lists were analyzed to find this out. RESULTS All products with natural substances contained dangerous natural substances or they contained natural substances, for which the...

conclusions extracts of u. dioica showed significant antibacterial effect against some clinically important pathogenic bacteria. based on the obtained results it can be concluded that u. dioica is useful as antibacterial and bactericidal agent in treating infectious diseases. materials and methods hydroalcoholic extracts from aerial parts were prepared using aqueous solution of ethanol and meth...

In the oligotrophic marine environment there are ecological niches rich in nutrients and diverse in bacterial populations. One such niche is the coral surface mucus layer. Interactions amongst microorganisms found in coral mucus may be symbiotic or competitive; competing over space and food. It has been hypothesized that the microbial communities found on the coral surface may play a role in th...

This paper describes the purification of two antibiotic substances produced by strains of Actinomyces isolated from soil. Both organisms were isolated and studied by Dr. Albert Iielner of the University of Pennsylvania for their cultural characteristics and conditions for maximum production of the antibiotic substances. Animal experiments, determination of antibacterial spectrum, etc., were con...

For many centuries green plants have been used for the treatment of various diseases. Tuberculosis is no exception, and numerous plants and plant products have, at one time or another, been reported to be of value in the treatment of this disease. During the past few years a number of investigators have surveyed seed plants for sources of antibacterial activity (1-10). In most of these studies ...

Pathogenic bacteria can interfere with the body health by producing toxic substances, damaging tissues, multiplying and killing healthy cells. Therefore, it is crucial to explore safe alternative treatment strategies, such as developing natural bactericidal agents eradicate infections. Red ginger (Zingiber officinale var. rubrum) has potential an antibacterial, so important study its activity i...

Polyethylene (PE) is one of the most widely used polymers in many industrial applications. Biomedical uses seem to be attractive, with increasing interest. However, PE it prone to infections and its additional surface treatment is indispensable. An increase in resistance to infections can be achieved by treating PE surfaces with substances containing antibacterial groups such as triclosan (5-Ch...

utilization authorities in sewage companies considered to sludge dewatering methods due to problems and challenges in this field. dewatering by sludge drying beds is considered in present study. this method is preferred to mechanical methods due to the need for very simple technology. due to restriction of natural dewatering, we tried to eliminate some of these limitations by the tests and stud...

Author’s Email: [email protected] Chemical ecology studies are needed to better understand the relationships between species and how the production of secondary metabolites influences these associations. The symbiotic relationship between insects, fungi and bacteria has been investigated and new findings in the area have shown how these relationships have evolved and which substances are i...