เครื่องฉายรังสีอินฟราเรดเพื่อกำจัดด้วงงวงข้าวในข้าวสาร
สุขอังคณาลีวิทยาอินทร์สอนปริวรรตนาสวาสดิ์และ อดุลย์จรรยาเลิศอดุลย์
วารสารวิทยาศาสตร์เกษตร 43 (3พิเศษ):199-203. 2555.
2555
บทคัดย่อ
After milling, long term storage rice often found to be damaged by rice weevil. Usage of chemical in controlling of insects in rice mill industry may affect the environment and harm customer health if chemical retained. Therefore, this research is aimed to develop and design the rice disinfestations machine by using the infrared radiation. In this application, far infrared radiation i.e. an electromagnetic wave with short wavelength was used to generate the heat for a short period of time to rice. The design process started from collecting data from rice entrepreneurs. The prototype machine has two 1000-watts infrared lamps with a rubber belt. Organic Hom Mali 105 rice with rice weevil were used. Design of experiment was Box Behnken Design for 27 runs with twice reruns. Operation condition: lamp temperature, distance between lamp and rice, rice thickness and belt speed (rpm) were studied. It was found that the optimum condition that deteriorates 100 percent of the amount of rice weevil within 2-3 min was temperature of 85 degree celsius, distance between lamp and rice of 10 cm, rice thickness of 1 cm and speed of motor 825 rpm. After heating, rice was cooled in air. No crack due to heating was found. The low amylose increased from 7.28% to 8.86%. Elongation of rice was 1.62 mm. unchanged, Gel consistency was moderate, and rice smell was good and unchanged.