Around 10 g of cooked pasta samples were dried in a desiccator
in the fridge. A piece of pasta strand was attached to a stainless
steel metal slid with double-stick tape, and platinum coated as
described by Rockland and Jones (1974). Then the samples were
observed under field-emission SEM (SU-70 UHR, Hitachi, USA)
with a magnification of 2000.