Manufacturing process influences properties of probiotic bacteria.
Summary of "Manufacturing process influences properties of probiotic bacteria."
Production and manufacturing methods and the food carrier may influence the properties of probiotic strains, and have an impact on the outcome of clinical intervention studies. The aim of the present study was to establish whether the properties of a specific probiotic strain, Lactobacillus rhamnosus GG, may differ depending on the product and source of the strain. In total, fifteen different L. rhamnosus isolates, among them fourteen labelled as L. rhamnosus GG, were isolated from specific probiotic products. The micro-organisms were phenotypically and genotypically characterised. Their adhesion properties were compared using the human intestinal mucus model, and the ability of the isolates to influence model pathogen adhesion to human colonic mucus was assessed. All L. rhamnosus isolates used were confirmed as members of the species L. rhamnosus. Except the reference strain OL, all L. rhamnosus isolates showed randomly amplified polymorphic DNA, enterobacterial repetitive intergenic consensus and pulsed-field gel electrophoresis profiles identical to that of L. rhamnosus GG (ATCC 53103). All L. rhamnosus isolates showed similar tolerance to acid and were able to bind to human colonic mucus. However, pathogen exclusion by inhibition and competition varied significantly among the different L. rhamnosus isolates and pathogens tested. The results suggest that different sources of the same probiotic may have significantly altered strain properties. This should be considered in in vivo studies on human subjects and also for quality control of probiotic products.
Functional Foods Forum, University of Turku, Itäinen Pitkäkatu 4 A 5, 20014 Turku, Finland.
This article was published in the following journal.
Name: The British journal of nutrition
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/21059281
- DOI: http://dx.doi.org/10.1017/S0007114510004496
Starter lactic acid bacteria in Cheddar cheese face physico-chemical stresses during manufacture and ageing that alter their abilities to survive and to interact with other bacterial populations. Nons...
For thousands of years, humans have safely consumed microorganisms through fermented foods. Many of these bacteria are considered probiotics, which act through diverse mechanisms to confer a health be...
Quality risk management (QRM) is now a regulatory expectation, and it makes good business sense. The goal of the risk assessment is to increase process understanding and deliver safe and effective pro...
Some lactic acid bacteria (LAB) possess probiotic properties beneficial to human health. However, both gastric acid and bile salt have adverse influences on the survival and viability of ingested prob...
Introduction: In the last years, the field of probiotics has grown notably. However, out of the thousands of strains isolated each year in the labs around the world, very few enter in a phase of indus...
The aim of the study is to find out if allergic diseases can be prevented buy giving probiotic bacteria to pregnant mothers and their newborn infants
We hypothesize that the administration of a combination of high numbers of probiotic bacteria will maintain normal bowel function and significantly moderate or obviate Immunosuppression As...
Periodontal disease is an infectious disease resulting in inflammation within supporting tissues of the teeth, progressive attachment loss, and bone loss. Epidemiological studies reveal th...
This study is designed to show how well tobramycin inhalation powder works and how safe it is when produced by a modified manufacturing process
We are conducting a study to learn if probiotics, which are live bacteria found in food like yogurt and cheese, will improve symptoms of abdominal pain. Individuals participating in this ...
Medical and Biotech [MESH] Definitions
Manufacturing technology for making microscopic devices in the micrometer range (typically 1-100 micrometers), such as integrated circuits or MEMS. The process usually involves replication and parallel fabrication of hundreds or millions of identical structures using various thin film deposition techniques and carried out in environmentally-controlled clean rooms.
The process in which structural properties of an introduced molecule imitate or simulate molecules of the host. Direct mimicry of a molecule enables a viral protein to bind directly to a normal substrate as a substitute for the homologous normal ligand. Immunologic molecular mimicry generally refers to what can be described as antigenic mimicry and is defined by the properties of ANTIBODIES raised against various facets of EPITOPES on the viral protein. (From Immunology Letters 1991 May;28(2):91-9)
Physiological processes and properties of microorganisms, including ARCHAEA; BACTERIA; RICKETTSIA; VIRUSES; FUNGI; and others.
A genus of gram-positive bacteria in the family Listeriaceae. It has 93% homology to LISTERIA and shares with it many phenotypic properties.
Physiological processes and properties of BACTERIA.