Effets des bact�ries lactiques ing�r�es avec des laits ferment�s sur la sant�

Abstract

-Health effects of lactic acid bacteria ingested in fermented milk. Many recent studies have shown the health effects of various strains of lactic acid bacteria in humans and animals and have tried to describe their action mechanism in the digestive tract. A number and a variety of potential beneficial effects have been published. Some of these effects have already been described such as the improvement of lactose digestion and the treatment of diarrheal disorders. Other health effects are still a subject of controversy such as the decrease of serum cholesterol and the reduction of tumor formation. The aim of this article is to summarize the probiotic effects of lactic acid bacteria, their mechanisms, and the fate of these microorganisms during their transit in the digestive tract. lactic acid bacteria / probiotics / health / digestive tractRésumé -Des travaux de plus en plus nombreux étudient les « effets santé » de différentes souches de bactéries lactiques chez l'homme et l'animal et essaient de cerner leur mécanisme d'action dans le tractus digestif. Les effets bénéfiques potentiels cités sont nombreux et variés. Certains sont maintenant bien établis tels que l'amélioration de la digestion du lactose et le traitement des désordres diarrhéiques, d'autres restent encore controversés tels que la diminution du cholestérol sérique ou encore la réduction de la formation de tumeurs. Le but de cet article est de faire une synthèse sur les effets probiotiques des bactéries lactiques, le mécanisme d'action et le devenir de ces micro-organismes dans le tractus digestif. bactérie lactique / probiotique / santé / tractus digestif

Heat-killed Lactobacillus casei confers broad protection against influenza A virus primary infection and develops heterosubtypic immunity against future secondary infection

“…Influenza virus can cause serious respiratory disease in humans. Despite the availability of influenza vaccines, it is estimated that influenza virus infections cause 3 to 5 million severe illnesses and 250,000 to 500,000 influenza-related deaths worldwide during epidemics 1 – 3 . Current influenza vaccines are effective when vaccine strains are well matched with the circulating influenza viruses.…”

“…Lactic acid bacteria (LAB) are the most common probiotics which bestow health benefits on the host as micro-organisms. Various fermented vegetables and dairy products contain a variety of LAB, which were shown to provide health benefits 1 , 7 – 10 .…”

Qualité microbiologique et physico-chimique des laits fermentés consommés à Maroua (Cameroun)

“…De nombreux travaux tels que ceux de Coudeyras et Forestier (2010), Heyman et Heuvelin (2006), Joly et al (2007), Drouault (2001), Savadogo et Traore (2011) ont montré que l'administration de laits fermentés, dont le yaourt, tend à rétablir un équilibre bactérien favorable à la normalisation du transit digestif. Puisque le lait fermenté et le yaourt peuvent permettre de rétablir le transit digestif et, quand on sait que ces produits sont fabriqués en grande quantité, de façon artisanale et non contrôlée, il devient donc impératif d'évaluer la qualité microbiologique des laits fermentés et des yaourts produits dans cette ville.…”

Identification of Antifungal Metabolites of Lactic Acid Bacteria

“…Nowadays, with the growing awareness of customers for natural food ingredients and additives, the use of lactic acid bacteria, commonly found in human gut and also used in fermented dairy products (yogurts, cheese, etc), would be a great way to produce more natural and healthy food. Drouault, and Corthier, (2001) highlighted the usefulness of these bacteria through their protective and stimulating effect on the human body.…”