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Validation of radio frequency treatments as alternative non-chemical methods for disinfesting chestnuts

文献类型： 外文期刊

作者： Hou, Lixia 1 ; Hou, Juncai 1 ; Li, Zhongxin 2 ; Johnson, Judy A. 3 ; Wang, Shaojin 1 ;

作者机构： 1.Northwest A&F Univ, Coll Mech & Elect Engn, Yangling 712100, Shaanxi, Peoples R China

2.Xinjiang Acad Agr Sci, Agr Mechanizat Inst, Urumqi, Xinjiang, Peoples R China

3.ARS, USDA, San Joaquin Valley Agr Sci Ctr, Parlier, CA 93648 USA

4.Washington State Univ, Dept Biol Syst Engn, Pullman, WA 99164 USA

关键词： Chestnut;Disinfestation;Quality;Radio frequency;Validation

期刊名称：JOURNAL OF STORED PRODUCTS RESEARCH （ 影响因子：2.643； 五年影响因子：2.829 ）

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收录情况： SCI

摘要： Chemical fumigation has been widely used to control insects in postharvest chestnuts but is inherent dangers when using fumigants. The purpose of this study was to validate application of radio frequency (RF) treatments for disinfesting chestnuts as an alternative to chemical fumigation. A practical process protocol was developed to control insect pests in chestnuts using a 27.12 MHz free-running oscillator RF system. Fifth-instar yellow peach moth, Conogethes punctiferalis, more heat tolerant than chestnut weevil, Curculio elephas, under three temperature and time combinations using a heating block system, was selected as the targeted insect to validate the RF treatment protocol. Mortality of fifth-instar C punctiferalis increased with increasing holding time at 55 degrees C using RF heating and reached 100% while holding in hot air for at least 5 min. Furthermore, there was no significant quality difference in color, fat, firmness, moisture content, protein, and soluble sugar content of chestnuts observed between RF treatments and controls. RF treatment methods hold potential to scale up for industrial applications of disinfesting chestnuts. (C) 2015 Elsevier Ltd. All rights reserved.

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