It is clear that lactose uptake rate by kefir immobilized on GP,
DCM, BSG and MSR is related to whey fermentation rate and the
increase of fermentation rate is accompanied by the increase of
lactose uptake rate by immobilized biocatalysts. Also, comparing
free cells with immobilized ones on above materials it is evident
that lactose uptake rate by immobilized kefir cells during whey fermentation
is higher than that with free cells. Furthermore, comparing
BSG and DCM supports with GP it is clear that immobilization
of kefir cells on cellulosic supports leads to higher fermentation
rate and lactose uptake rate than those for GP support