定量识别和传感器灵敏度分析用于检测状粒发出的气味挥发性化合物,Suidasia pontifica Oudemans
Naphacharakorn Ta-Phaisach1,2, Ploychompoo Konvipasruang2, Korrawat Attasopa1
1Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai, Thailand.
Pest management science
|April 16, 2024
概括
状谷物 (Suidasia pontifica) 由于Z-citral和E-citral而导致料中的草气味. 这些化合物可以检测低虫感染,有助于在料行业的早期检测.
科学领域:
- 农业昆虫学 农业昆虫学
- 化学生态化学生态学
- 食品科学 食品科学 食品科学
背景情况:
- 状谷 (Suidasia pontifica) 污染了料,产生了明显的草般的气味,降低了味道.
- 这种气味对料行业产生负面影响,需要早期检测和管理方法.
研究的目的:
- 确定导致虫感染的料和碎玉米的气味的挥发性有机化合物 (VOC).
- 调查虫种群密度与VOC度之间的相关性.
- 评估电子气味传感器在检测虫感染方面的有效性.
主要方法:
- 气色谱-质谱法 (GC-MS) 用于识别受污染的样本和单个虫中的VOC.
- 使用回归模型 (简单的线性和多项式) 来分析虫密度和VOC水平之间的关系.
- 九个电子气味传感器被测试了它们对虫衍生的VOCs的敏感性.
主要成果:
- 确定Z-citral和E-citral是导致草臭味的关键挥发性有机物,这些有机物出现在虫感染的样本中.
- 在肉料培养物中,虫密度和酸度之间确立了正相关性.
- 多项式回归模型确定了Z-citral (67/g) 和E-citral (3.89/g) 的检测值.
结论:
- 通过Z-citral和E-citral生产,Suidasia pontifica感染被证实是草气味的来源.
- 的度作为有效的生物标志物用于早期检测虫感染,因为它们可以在低人口密度下检测到.
- MQ系列电子气味传感器显示了存储环境中真实时间监测虫感染的潜力.
相关概念视频
01:19Gas Chromatography: Types of Detectors-II
In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...
01:15High-Performance Liquid Chromatography: Types of Detectors
The role of the detectors in High-Performance Liquid Chromatography (HPLC) is to analyze the solutes as they exit from the chromatographic column. The detector recognizes the solute's property and generates corresponding electrical signals, which are converted into a readable graph of the detector's response versus elution time called a chromatogram at the computer. There are several types of HPLC detectors, each with its own advantages and limitations, depending on the analyte properties and...