Milled Rice Fissure Formation Kinetics
نویسندگان
چکیده
Milled rice samples at various moisture contents (MCs) were exposed to air inside a chamber that was equipped with a video camera and monitoring system that enabled observation of fissure formation over a 24‐h exposure duration. The effects of milled rice kernel MC (11%, 12%, 13%, or 14%), cultivar (Bengal, Wells, and CL161), air relative humidity (RH; 10%, 20%, 30%, 45%, 60%, 75%, or 90%), and air temperature (5°C, 10°C, 15°C, 20°C, or 30°C) on the rate and amount of kernel fissuring were quantified. Rice cultivar and MC played minor roles in determining the rate and amount of fissuring relative to air temperature and RH. Fissuring rates were greatest at low (10%) and high (90%) RH levels; fissuring occurred almost immediately after kernels were exposed to these RH levels. Greater air temperatures considerably increased the rate and total amount of fissured kernels. Little fissuring was observed in an RH range of 30% to 75%, at any air temperature tested, providing a safe window for milled rice exposure to environmental conditions.
منابع مشابه
Environmental Conditions Causing Milled Rice Kernel Breakage in Medium-Grain Varieties
Milled rice kernels have been shown to rapidly fissure and eventually break when exposed to certain air conditions (Stermer 1968, Kunze and Hall 1967, Siebenmorgen et al 1998). Milled kernels rapidly gain or lose moisture from the environment depending on the air temperature and relative humidity (RH) of the surrounding air, as well as the moisture content (MC) of the kernels (Kunze and Choudha...
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