Crude glycerol and SFM were kindly provided by the biodiesel producer Pavlos N. Pettas S.A.
(Patras, Greece), while FRW streams were supplied by Jotis SA (Athens, Greece), a Greek confectionery
industry that produces a wide range of confectionery products and food for infants. The composition of
crude glycerol and SFM was presented by Kachrimanidou et al. [25