Why would the use of a known, reliable starter culture improve the safety of fermented meat products?

By using pure starter cultures, we know what we are adding in, and how much. We can control the microbial fermentation precisely to best prepare the food product.

Explanation:

Fermentation has always offered a methodology for preservation that is easy and does not require much energy. Fermented meats add nutrients and improve the flavor of meals, and the use of a reliable starter culture prevents the product from spoiling and causing from diseases related to its microorganisms, to even death due to its lethal toxins.