Science Letters: Radio frequency heating: a potential method for post-harvest pest control in nuts and dry products

编号 zgly0000346848

文献类型 期刊论文

文献题名 Science Letters: Radio frequency heating: a potential method for post-harvest pest control in nuts and dry products

作者 WANGShao-jin  TANGJu-ming 

作者单位 DepartmentofBiologicalSystemsEngineering 

母体文献 Journal of Zhejiang University Science;浙江大学学报: 自然科学英文版 

年卷期 2004,5(10)

页码 1169-1174

年份 2004 

分类号 S436.62  S41 

关键词 无线电频率加热  溴甲烷  植物检疫  灭虫法  坚果  采收期 

文摘内容 The multi-billion dollar US tree nut industries rely heavily on methyl bromide fumigation for postharvest insect control and are facing a major challenge with the mandated cessation by 2005 of its use for most applications. There is an urgent need to develop effective and economically viable alternative treatments to replace current phytosanitary and quarantine practices in order to maintain the competitiveness of US agriculture in domestic and international markets. With the reliable heating block system, the thermal death kinetics for fifth-instar codling moth, lndianmeal moth, and navel orangeworm were determined at a heating rate of 18℃/min. A practical process protocol was developed to control the most heat resistant insect pest, fifth-instar navel orangeworm, in in-shell walnuts using a 27MHz pilot scale radio frequency (RF) system. RF heating to 55℃ and holding in hot air for at least 5min resulted in 100% mortality of the fifth-instar navel orangeworm. Rancidity, sensory qualities and shell characteristics were not affected by the treatments. If this method can be economically integrated into the handling process, it should have excellent potential as a disinfestation method for in-shell walnuts。