‘‘Horchata” by-products (Protected Designation of Origin (PDO)
‘‘Chufa de Valencia”) were obtained directly from a local industry
(Horchatería Navia; Pilar de la Horadada, Alicante, Spain) and
transported under refrigerated conditions to IPOA Research Group
Pilot Plant at the Miguel Hernández University (Orihuela, Alicante,
Spain). These by-products were handy pressed using a tissue filter
to remove the residual water. The solid material (namely tiger nut
fibre because of its high content of dietary fibre) was vacuumpacked
in vacuum pouches (2 kg) and immediately frozen at
30 C. When required, pouches were placed at 4 C during 24 h
for thawing.