Permeability and Whey Separation The size of the inhomogenities of gel network (i.e., largest pores)was approximated by permeability measurement (van Dijk and Walstra, 1986). Inoculation rate and incubation temperature had significant effects (P < 0.001) on B and whey separation (Table 1). The interaction between inoculation rate and incubation temperature was significant for B(P<0.01)(Table 1).A lower B was observed with an increase in inoculation rate, whereas higher incubation temperature resulted in higher B (Table 2), indicating the presence of larger pores. Higher B values were observed previously in GDL-induced gels and yogurt gels made at a higher incubation temperature (van Vliet et al., 1997; Lucey et al., 1998b; Lee and Lucey, 2004).
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