Proteria® fermented sugar and vinegar are produced by the fermentation of sucrose, originated from cane, beet, or corn. The substrates are fermented to organic acids by food culture bacteria such as Lactobacillus paracasei subsp paracasei, Bacillus coagulans and Propionibacterium freudenreichii subsp shermanii. The products are used to control aW and pH value to form barriers of microorganism growth, maximizing the overall quality and microbial stability in a variety of foods.