Dairy Propionibacteria, a group of actinobacteria, with the dairy associated habitat are proven to be posessing good amount of probioitc characteristics as pH tolerance, bile and acid tolerance, pathogens supression, producing metabolites beneficial for gut bacteria. There are very less products available in the market using these probiotic organisms. What is the major bottleneck that is hindering the development of probiotic products based on these organisms? Thank you...