The gel point (tgel) was determined using the Winter and
Chambon method.5,6 Software on the rheometer was used to
carry out frequency sweeps and follow the gelation of the gelatin solutions. The variables G8 and G9 were measured at
five to seven frequencies. The gel point was determined as
the point in time when plots of logG8 versus logv and
logG9 versus logv were straight and had equal slope, n.