Microbial parameters
Microbial population and pH changes in the FWM held
for 10 and 30 days are shown in Table 1, Fig. 1. The pH of
anaerobically stored FWM dropped from pH 5.98 to pH
4.5 at the 10-day storage period and to pH 4.4 at the 30-day
storage period, whereas the pH of aerobically stored FWM
increased from 5.98 to 6.51 for a 0.5 pH unit increase. The
lower (P< 0.005) pH of the fermented FWM is attributed
to the anaerobic storage of the FWM which encourages the
growth of acid-producing bacteria that convert fermentable
FWM carbohydrate to lactic acid. A fast pH decline by