Milling and Physical Characteristics of Pigmented Rice Varieties

In the present study, four different pigmented rice varieties, namely glutinous white rice, black rice and two red rice varieties (TPS-1 and TKM-9) were evaluated for various quality aspects in terms of milling and physical characteristics such as hulling percentage, milling percentage, whole kernel recovery, milling loss, thousand grain weight, grain volume, bulk density, true density, grain length, grain width and L/B ratio. Among the four rice varieties TPS-1 had the highest hulling percentage, milling percentage, whole kernel recovery percentage. While as, glutinous white rice had the lowest milling loss. Thousand grain weight, grain volume was higher in glutinous white rice variety. Bulk density and true density were found to be highest for glutinous white rice followed by TPS-1, TKM-9 and black rice. Milling characteristic in terms of hulling percentage, milling percentage, whole kernel recovery and milling loss showed significant difference between the varieties. L/B ratio was found to be highest for glutinous white rice followed by TPS-1, TKM-9 and black rice variety. Grain length and grain width observed range from 5.38 – 6.38 mm and 1.90 – 2.24 mm.