Identification of compounds that contribute to trigeminal burn in aqueous ethanol solutions

•Molecular drivers of trigeminal burn in alcoholic distilled spirit models were identified.•Carbonyl species were correlated for the first time with trigeminal burn perception.•Higher concentration of carbonyl species elicited increased trigeminal burn response.•Recombination models and sensory eval...

Full description

Saved in:
Bibliographic Details
Published in:Food chemistry 2016-11, Vol.211, p.757-762
Main Authors: Kokkinidou, Smaro, Peterson, Devin G.
Format: Article
Language:English
Subjects:
Acetals
Alcoholic spirits
Aldehydes - analysis
Benzaldehydes - analysis
Carbonyl species
Ethanol - analysis
Hemiacetals
Humans
Ketones - analysis
Solutions
Trigeminal burn
Trigeminal Neuralgia - chemically induced
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•Molecular drivers of trigeminal burn in alcoholic distilled spirit models were identified.•Carbonyl species were correlated for the first time with trigeminal burn perception.•Higher concentration of carbonyl species elicited increased trigeminal burn response.•Recombination models and sensory evaluation confirmed causality.•Octanal, nonanal, benzaldehyde & 2-heptanone were strong potentiators of trigeminal burn. The influence of carbonyl species on the trigeminal burn of distilled spirit model systems was investigated. Quantities of the intrinsic carbonyl compounds were significantly altered in 40% ethanol solutions using two methods; (1) increasing or decreasing the product pH, to induce hemiacetal formation and acetal stabilization or induce and stabilize carbonyl species such as aldehydes, respectively and (2) utilizing a sulfonyl hydrazine polymer treatment. Samples with reduced carbonyl concentrations had significantly lower perceived trigeminal burn intensity. Sensory recombination experiments revealed that addition of carbonyl compounds increased trigeminal burn perception in model systems; confirming the direct relationship between the concentration of carbonyl compounds and trigeminal burn. The strongest potentiators of the trigeminal response were carbonyl compounds octanal, nonanal, benzaldehyde and 2-heptanone suggesting the probability that carbonyl species such as saturated aldehydes and ketones act as agonists to activate nociceptors such as TRPV1 and TRPA1 and elicit trigeminal burn.
ISSN:0308-8146
1873-7072
DOI:10.1016/j.foodchem.2016.05.117