Propriedades antimicrobianas do kefir

The fermented milks have been consumed since the antiquity, and currently it have been widely marketed and consumed around the world. Kefir is a fermented, acid, mildly alcoholic homemade milk produced from the fermentation of milk by kefir grains which contain a stable population of microorganisms. The fermentation process generates a series of compounds which impart flavor and aroma to kefir, and bioactive substances responsible for nutraceutic properties. The use of micro-organisms with antimicrobial properties as natural preservative is an alternative that has the advantage of inhibiting the development of pathogenic and spoilage bacteria without the use of undesirable chemicals. The interest in these species has increased in recent years, enabling the use of these probiotic micro-organisms as preservatives and natural inhibitors in several animal products such as milk, meat and their products. The aim of this paper is to present a review of literature on the antimicrobial properties attributed to kefir.