3.9.2. Sensitivity to pH, temperature and enzymatic action
Antimicrobial activity of bacteriocin from SB73 and SB93 was
unaffected by pH variation in the range of 2-12 (after fermentation,
pH of the cell free culture supernatant, containing bacteriocin, was
6). Activity of these bacteriocins, though diminished, was retained
above 100 C. Only SB93 bacteriocin retained its activity after
autoclaving like caseicin (Lu et al., 2014). Activities were lost when
treated with proteolytic enzymes, similar to that of nisin but was
unaffected by treatment with lipolytic enzymes (Lu et al., 2014;
Suresh, Iyapparaj, & Anantharaman, 2014)