pH value relation
Control of pH value of the fermentation medium (initially or
with buffer solutions) is an essential factor for the efficient
enzymatic hydrolysis of GL by A. niger NRRL 595. The
results presented in Table 5 show that high conversion
activities of GL were maintained within pH range of 6-7,
however the bioconversion process was markedly
retarded at pH values below 5.7. These findings support
the data presented by El-Menoufy (1988) and Akao (1997)
who reported that the enzymatic hydrolysis of GL is