关于人类脂肪嗅觉的观点——脂肪衍生物是否可以作为对膳食脂肪认知的线索?

IF 1.3 4区 医学 Q4 MEDICINE, RESEARCH & EXPERIMENTAL
Satoshi Tsuzuki
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引用次数: 0

摘要

脂肪(甘油三酯)的消耗对包括人类在内的动物的生存至关重要。能够闻到脂肪在判断食物价值时是有利的。然而,脂肪的波动性较差;因此,脂肪的嗅觉似乎是不可能的。那组成脂肪的脂肪酸呢?人类能闻到并辨别中链脂肪酸。然而,长链脂肪酸,包括必需酸,如亚油酸(LA)的嗅觉尚未提供确凿的证据。相反,人类可能通过氧化分解产生的挥发性化合物(如己醛和γ-癸内酯)的嗅觉来感知必需脂肪酸的存在。对一些人来说,这样的气味令人愉悦,尤其是来自水果的气味。然而,尚不清楚这些挥发物的气味是否会导致对脂肪本身的识别。如今,人们经常闻到诸如E,E-2,4-十二烯醛之类的LA-borne醛类,例如,在油炸过程中从食用油中明显产生,并且很容易被它们特有的“脂肪”气味所吸引,这可以被认为是对脂肪的“伪感知”。然而,我们对这种la基醛气味的偏好可能是现代n-6脂肪酸过量的潜在原因。这篇综述的目的是提供一个观点,如果有的话,我们是如何嗅觉感知膳食脂肪的,并提出未来与人类脂肪嗅觉相关的目的,如研究亚嗅觉系统来检测长链脂肪酸。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A point of view on human fat olfaction - do fatty derivatives serve as cues for awareness of dietary fats?

Fat (triglycerides) consumption is critical for the survival of animals, including humans. Being able to smell fat can be advantageous in judging food value. However, fat has poor volatility; thus, olfaction of fat seems impossible. What about fatty acids that comprise fat? Humans smell and discriminate medium-chain fatty acids. However, no conclusive evidence has been provided for the olfactory sense of long-chain fatty acids, including essential acids such as linoleic acid (LA). Instead, humans likely perceive the presence of essential fatty acids through the olfaction of volatile compounds generated by their oxidative breakdown (e.g., hexanal and γ-decalactone). For some people, such scents are pleasing, especially when they come from fruit. Nonetheless, it remains unclear whether the olfaction of these volatiles leads to the recognition of fat per se. Nowadays, people often smell LA-borne aldehydes such as E,E-2,4-decadienal that occur appreciably, for example, from edible oils during deep frying, and are pronely captivated by their characteristic "fatty" note, which can be considered a "pseudo-perception" of fat. However, our preference for such LA-borne aldehyde odors may be a potential cause behind the modern overdose of n-6 fatty acids. This review aims to provide a view of whether and, if any, how we olfactorily perceive dietary fats and raises future purposes related to human fat olfaction, such as investigating sub-olfactory systems for detecting long-chain fatty acids.

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来源期刊
Biomedical Research-tokyo
Biomedical Research-tokyo 医学-医学:研究与实验
CiteScore
2.40
自引率
0.00%
发文量
19
审稿时长
>12 weeks
期刊介绍: Biomedical Research is peer-reviewed International Research Journal . It was first launched in 1990 as a biannual English Journal and later became triannual. From 2008 it is published in Jan-Apr/ May-Aug/ Sep-Dec..
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