Food preservative potential of gassericin A-containing concentrate prepared from a cheese whey culture supernatant from Lactobacillus gasseri LA39.

Gassericin A (GA) is a circular bacteriocin produced by Lactobacillus gasseri LA39. In this study, GA-containing concentrate was prepared using a cross-flow membrane filtration device (30 kDa cut-off) from the culture supernatant of Lb. gasseri LA39 cultivated in a cheese whey-based food-grade medium.