The PS contents of the analyzed beverages are summarized in
Table 2. The PS totals ranged from 1.28 to 1.93 g/100 g of sample.
The total PS contents of the beverages enriched with free PS (MFbA
and FbA) were of the same order (1.34 g/100 g of sample) and
21.4% and 27.7% lower than the theoretical formulation (1.77 g PS/
100 g beverage), respectively. The PS content of the MFbB and FbB
samples (1.68 g/100 g sample) was higher than in A samples and
more similar to the theoretical formulation specifications (1.84 g PS/
100 g), though in the fruit beverage (FbB) the PS content obtained
was 22.6% lower. These observations could be attributed to several
factors related to the processing conditions used at laboratory scale
(such as speed of mixing, homogenization pressure and steps, time
and temperature), or/and the stability/biocompatibility of the delivery
system of each ingredient with food matrices used in this study.
As an example, rupture of the encapsulated material due to one of
the above mentioned factors may release the PS into the food matrix,
and since PS are not water soluble, higher proportions of PS may be