Optimization of Infrared Radiation Heating in Disinfestations of Organic Hom Mali Rice

Abstract

There is a difficulty in using chemical in disinfestations process in organic rice products therefore, this research was aimed to study the optimal setting of infrared radiation heating for disinfestations in Organic Hom Mali Rice. Disinfestations process and rice storage were collected by surveying coupled with interviewing the rice milling enterprise. The infrared radiation heating used in this experiment was belt type with lamp power of 1000 watt. In this study, Design of experimental technique was applied to generate the optimum setting of the infrared heating process. The experiments generated by Box Behnken design were 15 experiments and 2 replicate times, therefore the total experiments were 30 times. The 3 factors include heating temperature, gap between rice and infrared lamp and rice layer thickness. The result from statistical data analysis at reliability level of 95 % shown that the optimization value were heating temperature of 70 oC, height of lamp above rice of 10 cm. and rice thickness of 0.5 cm, insects mortality rate within 2-3 minutes. Rice after heating were subjected to naturally slow cooling by air, therefore rice quality in a good condition without broken or cracking.