Radio frequency heating against Sitophilus zeamais Motschulsky in white maize |
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| Affiliation: | 1. Departamento de Alimentos, Posgrado en Biociencias, División de Ciencias de la Vida, Campus Irapuato-Salamanca, Universidad de Guanajuato, Irapuato, Guanajuato, 36500, Mexico;2. Departamento de Agronomía, Posgrado en Biociencias, División de Ciencias de la Vida, Campus Irapuato-Salamanca, Universidad de Guanajuato, Irapuato, Guanajuato, 36500, Mexico;3. Departamento de Ingeniería Eléctrica, División de Ingenierías, Campus Irapuato- Salamanca, Universidad de Guanajuato, Salamanca, Guanajuato, 36600, Mexico;4. Departamento de Ingeniería Electrónica, División de Ingenierías, Campus Irapuato- Salamanca, Universidad de Guanajuato, Salamanca, Guanajuato, 36600, Mexico;1. Department of Exact Sciences and Engineering, UNIJUÍ – Regional University of the Northwest of Rio Grande do Sul, Brazil;2. Kazan State Agrarian University, Russia;1. Ministry of Agriculture and Forestry, Ankara Directorate of Provincial Agricultural and Forestry, Sereflikochisar, Ankara, Turkey;2. Ankara University, Kalecik Vocational School, Kalecik, Ankara, 06870, Turkey;3. Ankara University, Faculty of Agriculture, Department of Plant Protection, Diskapi, Ankara, 06110, Turkey;1. The New Zealand Institute for Plant and Food Research Limited, Private Bag 11600, Palmerston North, 4442, New Zealand;2. Northern Territory Department of Primary Industry and Fisheries, Darwin, Australia;3. Genera, 11 Maru Street, Tauranga, New Zealand;4. Eurofins, BOP, 137 Tetley Road, Katikati, New Zealand;5. AgResearch, Tennent Drive, 11 Dairy Farm Rd, Palmerston North, 4442, New Zealand;6. The New Zealand Institute for Plant and Food Research (retired), New Zealand;1. Northwest A&F University, College of Mechanical and Electronic Engineering, Yangling, Shaanxi 712100, China;2. Department of Biological Systems Engineering, Washington State University, 213 L.J. Smith Hall, Pullman, WA 99164-6120, USA |
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| Abstract: | Radio frequency treatments were evaluated for the control of Sitophilus zeamais Motschulsky in white maize, and their effects on physiological and biochemical properties were evaluated. A 12 kW, 27.12 MHz radio frequency machine was used with an electrode gap of 20 cm; batches of 10 and 20 kg of white maize (11.8% moisture content, w.b.) were treated. Radio frequency heating treatments at 50 °C for 3 min or 60 °C in white maize were effective to achieve 100% mortality of Sitophilus zeamais 4th instar larvae. Significant changes were observed in the moisture content, water activity and color in the corn kernels after the treatments (P < 0.05); however, they were within the range established by the Mexican Standard. As an advantage, the viability and germination of the grain were not affected by the treatments (P > 0.05). Radio frequency has potential to be a postharvest treatment against this pest without damage to white maize. |
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| Keywords: | Maize Radio frequency Disinfestation Heating uniformity |
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