A method for psychophysical screening of odorants for use in city gas based on olfactory adaptation tolerance

IF 1 4区医学 Q4 Neuroscience

Chemosensory Perception Pub Date : 2016-07-27 DOI:10.1007/s12078-016-9213-3

Tomoko Matsubasa, Naomi Gotow, Yasushiro Gomi, Tatsu Kobayakawa

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引用次数: 2

Abstract

In many developed nations, natural gas (so-called city gas) is supplied as a utility for cooking, heating, and hot-water supply. Because natural gas is odorless, city gas must be odorized so that it can be detected in the event of a leak. Although high adaptation tolerance is an important criterion for city gas odorants, there is yet no standard method of evaluating the psychophysical suitability of new candidate odorants in terms of olfactory adaptation. In order to address this situation, we developed a method for psychophysical screening of new candidate odorants for use in city gas based on adaptation tolerance.

We used the main component of the conventional city gas odor (tertbutylmercaptan, TBM) and six new candidate odorants: cyclohexene (CH), ethyl isobutyrate (EI), isovaleric acid (IVA), 2-hexene (HEX), 1,5-cyclooctadiene (COD), and 1-methylpyrrolidine (MEP). Participants evaluated the perceived intensity of a continuously presented odor at a fixed concentration. After the time-intensity curves were quantitatively classified into fast or slow adaptation patterns, we compared the number of intensity curves classified into each pattern between TBM and each new odorant.

Our results revealed that HEX has a significantly higher adaptation tolerance than TBM, and that the other five new candidate odorants were almost equivalent to TBM in terms of adaptation tolerance.

We concluded that all of the new candidate odorants used in this study passed the psychophysical screen based on adaptation tolerance, and are therefore suitable for use in city gas.

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一种基于嗅觉适应性耐受的城市燃气气味剂心理物理筛选方法

在许多发达国家，天然气(所谓的城市燃气)是作为烹饪、取暖和热水供应的公用设施而供应的。由于天然气是无味的，所以城市燃气必须加味，以便在发生泄漏时可以检测到。虽然高适应耐受性是城市燃气气味剂的重要标准，但目前还没有标准的方法来评估新的候选气味剂在嗅觉适应方面的心理物理适应性。为了解决这一问题，我们开发了一种基于适应耐受性的城市燃气新候选气味剂的心理物理筛选方法。我们采用传统城市气体气味的主要成分——叔丁基硫醇(TBM)和六种新的候选气味剂:环己烯(CH)、异丁酸乙酯(EI)、异戊酸(IVA)、2-己烯(HEX)、1,5-环二烯(COD)和1-甲基吡咯烷(MEP)。参与者评估在固定浓度下持续呈现的气味的感知强度。在将时间-强度曲线定量划分为快速或缓慢适应模式后，我们比较了TBM与每种新气味剂之间每种模式的强度曲线的数量。我们的研究结果表明，HEX具有明显高于TBM的适应耐受性，而其他五种新的候选气味剂在适应耐受性方面几乎与TBM相当。我们得出结论，本研究中使用的所有新候选气味剂都通过了基于适应性耐受性的心理物理筛选，因此适合在城市气体中使用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chemosensory Perception 农林科学-神经科学

CiteScore

2.50

自引率

0.00%

发文量

审稿时长

>36 weeks

期刊介绍： Coverage in Chemosensory Perception includes animal work with implications for human phenomena and explores the following areas: Identification of chemicals producing sensory response; Identification of sensory response associated with chemicals; Human in vivo response to chemical stimuli; Human in vitro response to chemical stimuli; Neuroimaging of chemosensory function; Neurological processing of chemoreception; Chemoreception mechanisms; Psychophysics of chemoperception; Trigeminal function; Multisensory perception; Contextual effect on chemoperception; Behavioral response to chemical stimuli; Physiological factors affecting and contributing to chemoperception; Flavor and hedonics; Memory and chemoperception.