Figure 1.

Sorption isotherms at 25 °C of the freeze-dried carriers (reference) and of the corresponding encapsulated hop extracts. (a) Comparison of the differently formulated reference freeze-dried powders without the extract (solid symbols); (b) microencapsulated hop extract made of maltodextrin and its reference; (c) microencapsulated hop extract made of Arabic gum and its reference; (d) microencapsulated hop extract made of maltodextrin and Arabic gum mix (ratio 1:1; w/w) and its reference. Data have been fitted with the GAB model (dashed and dotted lines), and fitting parameters are reported in inserts.