The most studied potential source is cactus pear (Opuntia
ficus-indica). A natural extract was encapsulated by the
PGSS1 (Particles from Gas Saturated Solutions) technique
into glyceryl monoostearate, using a surfactant
(polyglyceryl-3 polyricinoleate) and water under different
process conditions [50]. When compared with the Opuntia
dried extract, lipidic particles contributed to a better
homogenization of the pink color after incorporation in
ice cream. In another study, an extract was encapsulated
with maltodextrin and cladode mucilage and only with
maltodextrin [51]. The addition of cladode mucilage
increased the encapsulation efficiency, reduced the moisture
content and resulted in more uniform size and
spherical particles, with high dietary fiber content.