3.1. Swelling behavior of broccoli particles
In previous work we have reported the influence of the swelling
of the broccoli particles in SPS matrices. In that study we found
that the dried broccoli powder produced in-house could swell to
up to 7.6 times their original volume (Silva et al., 2012). In the
present study we have also investigated broccoli powder that is
commercially available (Z Natural Foods, LLC). To understand the
effect of different types of particles, we have determined their
swelling behavior. In Fig. 1, the results of the viscosity measurements
are presented. Dividing the slope of the fitted line by 2.5,
a swelling factor of 2.6 was obtained, almost three times lower
than the broccoli powder we have produced.