Table 3: Properties of liquid foams obtained in the batch process.

Initial formulationFA (%)

Solution of CS 2% ()
Solution of WPI 2% ()
Mixture CS/WPI
Mixture CS/WPI/SiO2
Mixture CS/WPI/HAp
Mixture CS/WPI/SiO2/HAp

CS: chitosan; WPI: whey protein isolate; HAp: hydroxyapatite; FA: foaming ability. Each assay was done in triplicate, and data are expressed as means (± standard deviation).