The degree of conversion of substrate obtained was 82%
and 90% for DOR40 and HS, respectively. In relation to the BC
yield, the value was a slightly higher for the test with HS
medium, 0.138 g BC per g of substrate, than for the test with
DOR40 extract, 0.099 g BC per g of substrate, which represents
72% of BC production using this extract. This difference
probably resulted from the fact that in HS medium, glucose
was the only substrate while in DOR40 extract other sugars
were present and probably yielded lower BC productions