3.3. Influence of bovine plasma protein and inulin on emulsion stability
The reduction in the fat content of a meat product decreases the
emulsifying stability, possibly due to the drop in the fat positive action
that stabilizes the batter by acting as a spacer within the protein network
(Álvarez & Barbut, 2013). However, the results in Table 3
(expressed as a separated fluid percentage, %SF) show that the addition
of bovine plasma proteins and inulin in the reduced-fat formulations
improves the stability compared with the control sample (P b 0.001),
suggesting that these compounds participate in fat and water holding
capacity, and also as emulsifiers. With respect to an increase in the
emulsion stability, a similar result was reported by Youssef and Barbut
(2011) who incorporated meat protein, and by Álvarez and Barbut
(2013) adding inulin. From the comparison between reduced fat sampleswith
inulin and with plasmaproteins, no statistically significant difference
(P N 0.05) was observed.