Potato starch pastes (6% w/v) with different levels of amino
acids (0, 0.05, 0.1 and 0.2 mol/kg on a starch weight basis) were
prepared by heating at 95 C for 20 min in a water bath with stirring. Then the paste (30 g) was added into 50 ml centrifuge tubes
and stored in a freezer (24 C) for 22 h and then thawed at water
bath (30 C) for 2 h. The pastes were centrifuged at 3500g for
10 min. The percentage of water separated was measured and