Sampling
Rice samples were collected from various brands (imported and
domestic cultivated) available in retail stores of Shiraz, Iran in
2013. The samples collected covered both the locally produced
and the imported rice. These samples represent the major brands
on the Iran market. A total of 3–7 different brands were collected
within each major group. 210 packed rice samples (weighing from
15 to 20 kg) were selected from markets around Shiraz. For each
brand, five samples (for about 250 g) were randomly selected. Rice
samples were passed through a 50 mesh (