The combination of mixed lactic acid bacteria and dietary fiber lowers serum cholesterol levels and fecal harmful enzyme activities in rats.
Summary of "The combination of mixed lactic acid bacteria and dietary fiber lowers serum cholesterol levels and fecal harmful enzyme activities in rats."
Probiotics such as lactic acid bacteria (LAB) and prebiotics such as fiber are generally considered beneficial for health. These affect the microflora composition and fermentation metabolites and consequently contribute to local and systemic effects in humans. The beneficial effects of probiotics can be improved when combined with prebiotics. Here we investigated the effects of a mixed LAB supplement combined with dietary fiber on the population of LAB in the gut, as well as on serum cholesterol levels, fecal water content and microbial harmful enzyme activities. For animal studies, 0.2 mL of mixed LAB (Bifidobacterium longum SPM1205, Lactobacillus acidophilus, and SAFELAC isolated from Pediococcus pentosaceus) supplement (10(7) ∼ 10(8) colony forming units per day) was orally administered to male Sprague-Dawley rats every day for 2 weeks along with a diet containing 5% or 10% cellulose. The mixed LAB supplement combined with dietary cellulose significantly (p < 0.05) reduced serum total cholesterol and LDL levels. This combination also significantly (p < 0.05) increased the population of LAB and the fecal water content and significantly (p < 0.05) reduced microbial harmful enzyme (β-glucosidase, β-glucuronidase and tryptophanase) activities. These effects of LAB were particularly improved by its combination with 5% cellulose compared to the control (a diet without cellulose), and the 5% cellulose combination was more effective than the 10% cellulose combination. In conclusion, the incorporation of a fibrous diet such as cellulose with lactic acid bacteria improved the population of LAB, and daily consumption of this combination could reduce the serum cholesterol levels and activities of harmful enzymes such as β-glucosidase, β-glucuronidase, tryptophanase, urease in rats.
College of Pharmacy, Sahmyook University, Seoul, 139-742, Korea.
This article was published in the following journal.
Name: Archives of pharmacal research
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/21468911
- DOI: http://dx.doi.org/10.1007/s12272-011-0102-7
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Medical and Biotech [MESH] Definitions
A species of gram-positive, rod-shaped LACTIC ACID bacteria that is frequently used as starter culture in SILAGE fermentation, sourdough, and lactic-acid-fermented types of beer and wine.
A genus of gram-positive, asporogenous, lactic acid bacteria, in the family LEUCONOSTOCACEAE.
A family of gram-positive lactic acid-producing bacteria in the order LACTOBACILLALES.
A species of rod-shaped, LACTIC ACID bacteria used in PROBIOTICS and SILAGE production.
A family of gram-positive bacteria in the order LACTOBACILLALES. Lactic acid is the main product of their carbohydrate metabolism.