3.1.1. Acidification Properties. Rapid acidification is a priority for development of starter cultures for fermented milk products. The acidification properties of predominant LAB isolated from spontaneously fermented Nunu are shown in
Figure 1. Generally, the rate of acidification varied among the isolates tested. Eighty-two percent (82%) of Lactobacillus
helveticus were acidifying fast. Additionally, 34% of L. fermentum, 59% of L. plantarum, and 20% of L. mesenteroides
demonstrated fast acidification properties as well. Idoui and Karam indicated that L. plantarum and L. curvatus
isolated from Jijel’s traditional butter made from cows’ milk were the fastest acid producers. In a study by Haddadin ,
L. plantarum was the fastest acid producing isolated strain.