Paper Title
Effects of Sundrying Methods on the Milled Rice Quality of Stored Inorganic and Organically-Grown Paddy

Abstract
This study aimed to investigate the effects of different sundrying methods (Control or no drying, 2-hr, 4-hr, 6-hr with every 30 min stirring, Farmer’s Practice or 6 hr with 1 stirring) on the milled rice quality of stored inorganic and organically-grown paddy. The experiment was conducted in February 2017 using PSB Rc82 rice harvested in October 2016). Treatments were laid out in a two-way factorial Completely Randomized Design (CRD) replicated thrice. Quality parameters evaluated were: moisture content, brown rice recovery, milled rice recovery, amylose content, crude protein content, % 2-2 diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity, and total phenolic content. Drying method and type of rice significantly affected the moisture content, brown rice recovery, milled rice recovery, amylose content, crude protein content, % DPPH radical scavenging activity, and total phenolic content of PSB Rc 82 rice. The 2-hr drying (with every 30 min stirring) removed the least amount of moisture from the paddy samples and gave the highest brown rice and milled rice recoveries. This is maybe due to shorter exposure to high temperature. Lowest amylose contents were observed from 6-hr drying with every 30 min stirring. The lower the amylose content, the softer the rice is. Moisture contents of the milled PSB Rc 82 rice subjected to different drying methods ranged from 10.15 to 11.97 % MCw.b., which are within the 14% MC w.b. quality standard. Highest crude protein content was obtained from Control (no drying). The crude protein content, which indicates rice nutritional value, decreased with drying time, may be due to biochemical reaction that takes place during drying. Inorganic rice had higher crude protein content than organically-grown rice. The higher the crude protein content, the more nutritious it is. Highest % DPPH radical scavenging activities were obtained from samples dried at 4-hr drying with every 30 min stirring. Inorganic rice had higher % DPPH radical scavenging activities than organically-grown rice. The higher %DPPH radical scavenging activity and total phenolic content in rice, the better and more beneficial to human health . Keywords - Amylose Content, Brown Rice Recovery, Crude Protein Content, % DPPH Radical Scavenging Activity, Milled Rice Recovery, Moisture Content, Milling, Sundrying, Total Phenolic Content