相关实验视频
Updated: Jul 16, 2026

11:02
Fruit Volatile Analysis Using an Electronic Nose
Published on: March 30, 2012
21.6K
[根据气味变化建立一个基于多边形树脂菌的电子鼻子快速分辨模型]
Shu-Lin Yu1, Jian-Ting Gong2, Li Li2
1School of Chinese Materia Medica, Beijing University of Chinese Medicine Beijing 102488, China.
概括
一个电子鼻子通过分析其气味指纹,有效地识别了菌的Pollygonati Rhizoma. 这项技术能够快速检测出的中国草药中的挥发性有机化合物.
科学领域:
- 食品科学 食品科学 食品科学
- 分析化学 分析化学
- 草药分析 草药分析
背景情况:
- 波利戈纳蒂树质量受到菌的影响,改变了其挥发性有机化合物 (VOC) 概况.
- 准确和快速检测菌的草药对于质量控制至关重要.
研究的目的:
- 使用电子鼻子技术建立一个快速辨别模型,用于识别菌的多角性根茎.
- 探索气味变化与菌程度之间的关系.
主要方法:
- 使用 α-FOX3000 电子鼻子分析了不同菌水平的多角性树菌的气味指纹.
- 采用雷达地图来识别主要的VOC贡献者和部分最小方程区分分析 (PLS-DA) 来进行分类.
- 应用机器学习算法包括K-近邻 (KNN),顺序最小优化 (SMO),随机森林 (RF) 和天真贝叶斯 (NB) 模型验证.
主要成果:
- 特定的传感器 (T70/2,T30/1,P10/2) 显示菌时反应增加,表明和芳香化合物的产生.
- PLS-DA成功地区分了三种程度的菌.
- 四种分类模型的准确度达到90%以上,KNN的准确度达到97.2%.
- 确定了五个关键传感器 (T70/2,T30/1,PA/2,P10/1,P40/1),这些传感器对于分类至关重要.
结论:
- 电子鼻子技术可以检测出由菌的波利戈纳提树体产生的VOCs.
- 成功建立了菌植物药物的快速歧视模型.
- 这项研究为进一步研究在菌的中国草药中检测VOC提供了基础.
更多相关视频
相关概念视频
Olfaction
The sense of smell is achieved through the activities of the olfactory system. It starts when an airborne odorant enters the nasal cavity and reaches olfactory epithelium (OE). The OE is protected by a thin layer of mucus, which also serves the purpose of dissolving more complex compounds into simpler chemical odorants. The size of the OE and the density of sensory neurons varies among species; in humans, the OE is only about 9-10 cm2.
The olfactory receptors are embedded in the cilia of the...
The olfactory receptors are embedded in the cilia of the...
Rapid Identification of Pathogens
MALDI-TOF MS has transformed clinical microbiology by offering a rapid and reliable method for pathogen identification. The traditional approach to microbial identification typically involves time-consuming culture techniques and biochemical tests, which can delay the initiation of appropriate antimicrobial therapy. MALDI-TOF MS avoids these delays by using characteristic ribosomal protein mass patterns of microbial cells, enabling accurate species-level identification within minutes.Principle...

