Introduction
The fermentation of food evolved through centuries, from process driven by adventitious microbiota (AM), represented by unknown microbial consortia naturally present in the raw food ingredients and in the environment, to the use of selected starter cultures. Thus,
number of fermented foods, such as traditional cheeses,dry fermented sausages,sauerkrauts and fermented beverages,are still produced without the addition of microbial inoculation [1,2]. Over time, with the aim to improve and standardize the foods, ensuring preservation, safety and quality, the subsequent evolutionary step has been constantly associated with the back-slopping approaches,
where higher counts of microorganisms are added to