The use of live bacteria to induce an immune response to itself or to a carried vaccine component is an attractive vaccine strategy. Advantages of live bacterial vaccines include their mimicry of a natural infection, intrinsic adjuvant properties and their possibility to be administered orally. Derivatives of pathogenic and non-pathogenic food related bacteria are currently being evaluated as l...

BACKGROUND/PURPOSE Pathogenic organisms are thought to be widely distributed among food handlers. This study was designed to assess the prevalence of carriers of some pathogenic bacteria and intestinal parasites among food handlers in the city of Omdurman, Sudan. METHODS A total of 518 nasal swabs and stool specimens were collected. Nasal swabs were cultured on bacteriological culture media. ...

objective(s):urinary tract infection (uti) caused by bacteria is one of the most frequent infections in human population. inappropriate use of antibiotics, often leads to appearance of drug resistance in bacteria. however, use of probiotic bacteria has been suggested as a partial replacement. this study was aimed to assess the antagonistic effects of lactobacillus standard strains against bacte...

Lactic acid bacteria (LAB) are gram positive and non- spore forming bacteria that can produce some special substances for growth inhibition of pathogenic, non-pathogenic and food spoilage bacteria. The aim of this study was to determine the inhibitory effects of Lactobacillus acidophilus PTCC1643 (DSM 20079) and Lactobacillus plantarum PTCC 1058 (ATCC 8014) cultural supernatants against urinary...

The viable but nonculturable (VBNC) state is a unique survival strategy of many bacteria in the environment in response to adverse environmental conditions. VBNC bacteria cannot be cultured on routine microbiological media, but they remain viable and retain virulence. The VBNC bacteria can be resuscitated when provided with appropriate conditions. A good number of bacteria including many human ...

Stevia rebaudiana Bertoni, is an ancient perennial shrub of South America, with great potential as a crop for the production of high-power natural sweetener. Due to its chemical composition and content of the phytochemical compounds, it is suitable as a raw material for the extraction and production of functional foods. Diterpene glycosides component of low-calorie sweetener is approximately 30...

lactic acid bacteria (lab) are gram positive and non- spore forming bacteria that can produce some special substances for growth inhibition of pathogenic, non-pathogenic and food spoilage bacteria. the aim of this study was to determine the inhibitory effects of lactobacillus acidophilus ptcc1643 (dsm 20079) and lactobacillus plantarum ptcc 1058 (atcc 8014) cultural supernatants against urinary...

Background: Plant-derived Essential Oils (EOs) have shown remarkable antimicrobial activity against spoilage and pathogenic microorganisms isolated from food products. The objective of the current study was to determine in vitro antimicrobial effects of selected EOs against these microorganisms. Methods: Antimicrobial activity of EOs against food-borne and spoilage microorganisms was screened ...

screening of microorganisms for the production of novel antibiotics has been intensivelypursued for many years by scientists. actinomycetes have the capability to synthesize manydifferent antibiotics. a total of 69 actinomycete isolates were recovered from soil samplescollected from alborz province. selected colonies (rough, chalky) of actinomycetes werepurified. all screened isolates were iden...

Identifying trace amounts of bacteria rapidly, accurately, selectively, and with high sensitivity is important to ensuring the safety of food and diagnosing infectious bacterial diseases. Microbial diseases constitute the major cause of death in many developing and developed countries of the world. The early detection of pathogenic bacteria is crucial in preventing, treating, and containing the...