相关实验视频
Updated: May 9, 2026
11:02
Fruit Volatile Analysis Using an Electronic Nose
Published on: March 30, 2012
21.3K
基于生物嗅觉的系统设计,用于使用电子鼻子传感器进行肉类分析
Ozgun Boray Yurdakos1, Ozge Cihanbegendi2
1Basic Oncology Department, Ege University, 35100 Izmir, Turkiye.
ACS omega
|August 5, 2024
概括
这项研究开发了一种便携式电子鼻子 (e-nose),用于检测一氧化碳和甲等气体,准确评估肉类腐烂情况. 电子鼻子的结果与气色谱-质谱和微生物分析一致,提供了可靠的食品安全工具.
科学领域:
- 食品科学 食品科学 食品科学
- 分析化学 分析化学
- 微生物学 微生物学
背景情况:
- 肉制品的微生物恶化导致大量的食物损失和健康风险.
- 了解储存期间的微生物群对于识别损坏水平至关重要.
- 目前用于检测损坏的方法可以通过先进的分析技术来补充.
研究的目的:
- 在不同的环境条件下 (温度,持续时间) 确定肉类降解水平.
- 将一种新型电子鼻子 (e-nose) 系统与既有分析方法 (GC-MS,微生物分析) 相比较.
- 为了验证电子鼻子在评估肉类腐烂方面的能力.
主要方法:
- 开发一种使用金属氧化物半导体 (MOS) 传感器的便携式电子鼻子设备.
- 检测特定的挥发性化合物:一氧化碳 (CO),甲 (CH4),乙醇 (C2H5OH) 和氨 (NH3).
- 使用气体染色学-质谱学 (GC-MS) 和传统微生物测量方法进行比较分析.
主要成果:
- 开发的e-nose系统在检测关键的腐烂气体方面表现出灵敏度.
- 电子鼻子测量显示出与GC-MS和微生物分析数据有很强的相关性和一致性.
- 该系统在评估不同条件下的肉类降解时证明有效.
结论:
- 便携式电子鼻子是一个有前途的,空间高效的工具,用于实时监测肉类腐烂.
- 电子鼻子提供可靠的数据,可与已建立的分析技术相提并论.
- 这项技术可以提高食品安全,减少食物浪费.
相关概念视频
01:25Olfaction
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...
01:20Physiology of Smell and Olfactory Pathway
Humans detect odors with the help of specialized cells located in the upper part of the nasal cavity, called olfactory receptor neurons (ORNs). ORNs possess hair-like structures called cilia, which are receptive to sensations from the inhaled air. When an odorant molecule binds to a specific receptor on the cell of the cilia, it leads to a series of events that ultimately cause the ORN to send electrical signals to the olfactory bulb in the brain through the olfactory nerves.
The olfactory...
The olfactory...
01:17Microbial Biosensors
Microbial biosensors are analytical devices that utilize living microbes to detect specific substances through measurable signals. These devices consist of two main components: biosensing organisms and signal-transducing elements. Biosensing organisms, such as Escherichia coli or Saccharomyces cerevisiae, are typically housed in multiwell plates connected to transducers, enabling rapid, real-time detection of target analytes.Signal Generation MechanismWhen a target analyte—such as...