微波处理对水稻品质及玉米象成虫死亡率的影响

IF 1.2 4区 农林科学 Q3 AGRICULTURAL ENGINEERING
T. Mckay, K. Luthra, L. Starkus, Eva Owusu, Justin W. Siebenmorgen, G. Atungulu
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引用次数: 0

摘要

本研究为微波技术和玉米象死亡率对先前干燥的糙米和糙米的影响提供了新的见解。玉米玉米瘟病菌在5 kW、90 s时的死亡率最高,粗米和糙米的死亡率分别为98%和100%。使用5千瓦的微波功率对粗米进行90秒的微波处理,对水稻的抽穗产量、颜色和糊化特性没有影响。对于糙米,建议在5千瓦下持续34或60秒,或在3千瓦下持续90秒,以避免HRY的减少。摘要一项实验室研究是为了确定工业微波是否能杀死侵害粗米和糙米的玉米象。糙米和糙米样品由风干后的长粒杂交种(RT 7521 FP)组成,初始含水量分别为11.3和12.7%湿基(w.b)。用10只玉米玉米螟成虫侵染250 g样品,分别用3和5 kW的微波功率加热34、60和90 s。研究了微波处理对水稻水分、抽穗率、稻米色泽和糊化特性的影响。玉米玉米瘟病菌在5 kW处理下,90 s死亡率最高,粗米和糙米的死亡率分别为98%和100%。在90秒内以5千瓦的功率处理粗米,其含水量明显低于对照;然而,HRY、颜色和粘贴特征与对照组没有显著差异。5 kW处理90 s的糙米含水率较低,HRY(28.4%)显著低于对照(56.2%)。与对照组相比,没有观察到颜色的差异和粘贴特征的一些变化。对于糙米,我们建议使用更短的持续时间,即5kw时的34或60 s或3kw时的90 s,以避免HRY和糊化特性的降低。关键词:糙米;玉米象鼻虫;微波干燥;
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Assessing the Effects of Microwave Treatments on Rice Quality and Mortality of Adult Maize Weevil, Sitophilus zeamais
Highlights The study provides insight to microwave technology and the effects of Sitophilus zeamais mortality on rough rice and brown rice that has been previously dried. The mortality of S. zeamais was highest at 5 kW at 90 s, with 98 and 100% mortality for rough rice and brown rice, respectively. Using a microwave power of 5 kW for 90 s on rough rice did not affect head rice yield (HRY), color, or pasting characteristics. For brown rice, a shorter duration of 34 or 60 s at 5 kW or 3 kW for 90 s is recommended to avoid a reduction in HRY. Abstract. A laboratory study was conducted to determine if an industrial microwave could kill Sitophilus zeamais infesting rough rice and brown rice. The rough rice and brown rice samples were comprised of previously air-dried long-grain hybrid (RT 7521 FP) cultivars at initial moisture contents of 11.3 and 12.7% wet basis (w.b.), respectively. Samples (250 g) were infested with ten S. zeamais adults and heated with a microwave power of 3 and 5 kW for 34, 60, and 90 s. The effects of microwave treatments on moisture, head rice yield (HRY), rice color, and pasting characteristics were evaluated. The mortality of S. zeamais was highest at 5 kW at 90 s, with 98% and 100% mortality for rough rice and brown rice, respectively. Rough rice treated at 5 kW at 90 s did result in significantly lower moisture content than the control; however, HRY, color, and pasting characteristics were not significantly different than the controls. Brown rice treated at 5 kW for 90 s resulted in lower moisture content, and there was a significant decrease in the HRY (28.4%) compared to the control (56.2%). No differences in color and some variations in pasting characteristics were observed when compared to the controls. For brown rice, we recommended a shorter duration of 34 or 60 s at 5 kW or 3 kW for 90 s be used to avoid a reduction in HRY and pasting characteristics. Keywords: Brown rice, Maize weevil, Microwave drying, Rough rice.
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