Identification of Probiotic Strains from Human Milk in Breastfed Infants with Respiratory Infections

Isolation and industrial exploitation of probiotics from human milk is a goal for worldwide milk biotechnology centres because of their modulation effect on the immune system in infants and adults. In the proposed study we have analysed fermentation patterns of Lactobacilli isolated from human milk, the reliability of API 50 CH carbohydrate fermentation system and a possible link between lactose concentrations and fermentation profiles on carbohydrates. We had succesfully identified three species of Lactobacillus (paracasei ssp paracasei, fermentum, acidophilus) and one unsatisfactory identification of Lactoccocus lactis ssp lactis. These strains had different carbohydrate fermentation patterns but with common characteristics and showed no statistically significant correlations between their carbohydrate metabolic trends and lactose concentrations in the milk samples.