The rice was milled to pass through a 0.5 mm sieve. Taking the
initial moisture of rice flour into account, the moisture and amylase content of rice
flour were adjusted to the desired level (Table1).The amylase was added to the water for adjusting
flour moisture content. All samples were blended for 10 min to equally distribute the moisture and amylase. The hydrated flour was stored at 4C overnight in sealed plastic bags for equilibration prior to extrusion.
Enzymatic extrusion was carried out using a laboratory scale twin-