控制玉米 (Sitophilus zeamais) 在适度温度下的生命阶段,使用微波能量
Amro B Hassan1, Dieter von Hoersten2, Shaojin Wang3,4
1Department of Food Science and Nutrition, Faculty of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia.
Insects
|January 28, 2026
概括
微波能量有效地控制了玉米 (Sitophilus zeamais) 在谷物中的生命阶段. 最佳条件包括5分钟加热至50°C,含有14%的水分和1分钟的处理,显示出消除害虫和谷物质量的最佳平衡.
科学领域:
- 农业科学 农业科学
- 食品科学 食品科学 食品科学
- 虫害管理 虫害管理 虫害管理
背景情况:
- 玉米虫 (Sitophilus zeamais) 是一个重要的害虫,在储存的玉米中造成了巨大的损失.
- 有效和安全的害虫控制方法对于保持谷物质量和防止经济损害至关重要.
研究的目的:
- 评估微波能量对控制玉米虫所有生命阶段的有效性.
- 为了确定玉米粒的最佳微波处理条件.
- 评估微波处理对玉米粒发芽的影响.
主要方法:
- 具有不同水分含量的玉米样本 (10%,14%,18%) 被Sitophilus zeamais生命阶段感染.
- 样品暴露于微波能量 (2.45 GHz, 300 W) 以达到50°C,保持时间为0,1,3分钟和5分钟.
- 评估了害虫死亡率和谷物发芽率. 部分最小平方 (PLS) 建模用于验证.
主要成果:
- 西托菲勒斯 (Sitophilus zeamais) 的卵阶段对微波能量最敏感,而成年阶段对微波能量最不敏感.
- 在所有测试湿度水平中,在50°C下5分钟实现了所有生命阶段的完全根除.
- 在50°C和14%的水分含量下进行1分钟的处理,有效地消除了害虫,同时保持了谷物发芽.
结论:
- 微波能量是控制玉米中Sitophilus zeamais的一种可行的方法.
- 优化的微波处理 (50°C,14%湿度,1分钟) 可以平衡害虫防治和谷物质量.
- 建议在玉米加工中进一步工业化应用该方法.
相关概念视频
02:11Effects of Temperature on Free Energy
28.2K
The spontaneity of a process depends upon the temperature of the system. Phase transitions, for example, will proceed spontaneously in one direction or the other depending upon the temperature of the substance in question. Likewise, some chemical reactions can also exhibit temperature-dependent spontaneities. To illustrate this concept, the equation relating free energy change to the enthalpy and entropy changes for the process is considered:
28.2K
01:23Characteristics of Life
260.4K
Biology is a natural science that studies life and living organisms, including their structure, function, development, interactions, evolution, distribution, and taxonomy. The field's scope is extensive and divided into several specialized disciplines, such as anatomy, physiology, ethology, genetics, and many more. All living things share a few key traits, including cellular organization, heritable genetic material and the ability to adapt/evolve, metabolism to regulate energy needs, the...
260.4K
03:07Kinetic Molecular Theory: Molecular Velocities, Temperature, and Kinetic Energy
29.8K
The kinetic molecular theory qualitatively explains the behaviors described by the various gas laws. The postulates of this theory may be applied in a more quantitative fashion to derive these individual laws.
29.8K
01:14Conservation of Energy in Control Volume
1.1K
Consider a turbine operating under steady-flow conditions. The control volume is drawn around the turbine, with fluid entering at one point and exiting at another. The turbine extracts energy from the fluid, which performs mechanical work (shaft work).
For steady flow systems, the time derivative of the stored energy becomes zero since there is no energy accumulation within the control volume. This simplifies the energy equation to:
For steady flow systems, the time derivative of the stored energy becomes zero since there is no energy accumulation within the control volume. This simplifies the energy equation to:
1.1K
02:42Half-life of a Reaction
38.9K
The half-life of a reaction (t1/2) is the time required for one-half of a given amount of reactant to be consumed. In each succeeding half-life, half of the remaining concentration of the reactant is consumed. For example, during the decomposition of hydrogen peroxide, during the first half-life (from 0.00 hours to 6.00 hours), the concentration of H2O2 decreases from 1.000 M to 0.500 M. During the second half-life (from 6.00 hours to 12.00 hours), the concentration decreases from 0.500 M to...
38.9K
02:39The Angiosperm Life Cycle
72.4K
Plants have a life cycle split between two multicellular stages: a haploid stage—with cells containing one set of chromosomes—and a diploid stage—with cells containing two sets of chromosomes. The haploid stage is the gamete-producing gametophyte, and the diploid stage is the spore-producing sporophyte.
72.4K