The dominant overall flora in human intestines in bifidobacteria, B. longum. The information provided by the Authors are very useful in understanding the process of probiotic adaptation with regards to the fermentation conditions, in milk and other food substrates. Among the factors influencing the viability of probiotic microorganisms in food products, the most important are: pH, titrable acidity, molecular oxygen, redox potential, hydrogen peroxide, bacteriocins and short chain fatty acids.
