enzyme activity determination
Loopfuls of cells (from each strain), sub cultured on GYMP
agar slants, were inoculated into 10 ml of standard medium in
test tubes and cultivated at 25 ◦C for 24 h. After adequate development
of the cultures, they were transferred into 500 ml flasks
(with baffles) containing a further 100 ml of the same medium,
and cultivated aerobically at 25 ◦C for 72 h in a reciprocal shaker
(150 rpm).
Samples were collected after 24, 48 and 72 h, the cells harvested
by centrifugation at 6000×g (10 min, 10 ◦C), and the
cell-free supernatants used to screen for transfructosylating
activity.
2.3. Secondary