Identification of Distinctive Odor Compounds Generated from Garlic Infected by Potato Rot Nematode Using Gas Chromatography-olfactometry

KOGA Yuki, YOSHIGA Toyoshi, SHINDO Junichi, AOYAMA Rie, MATSUMOTO Hideaki, RYUDA Noriko, HARAGUCHI Tomokazu, MIYAMOTO Hideki, UENO Daisuke

doi:10.2116/bunsekikagaku.70.427

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におい嗅ぎGCを用いるイモグサレセンチュウ感染ニンニクから特徴的に発生するにおい物質の同定
ニオイカギ GC オモチイルイモグサレセンチュウカンセンニンニクカラトクチョウテキニハッセイスルニオイブッシツノドウテイ

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<p>The potato-rot nematode Ditylenchus destructor (Tylenchida: Anguinidae) causes severe damage to garlic production in Japan. Since nematode-infested garlic is difficult to discriminate from healthy ones, it has been required to find a novel technique to identified nematode-infested garlic. To be able to identify nematode-infested garlic in a non-destructive way, here this study has introduced an analytical system of gas chromatography–olfactometry (GC-O) and GC-MS with heart-cut enrichment technique. The objective of this research was to identify the subjectively perceptible odors that derive from nematode-infested garlic and to evaluate the effectiveness of the novel analytical system. Several odor-activities associated with nematode-infested garlic were detected and were identified by the system. Allyl methyl sulfide, diallyl sulfide, allyl methyl disulfide, and eugenol were identified as major odor compounds in infested garlic. This result suggests that these distinctive odor compounds might be used as indicators to detect nematode-infested garlic in a non-destructive way.</p>

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BUNSEKI KAGAKU

BUNSEKI KAGAKU 70 (7.8), 427-434, 2021-07-05

The Japan Society for Analytical Chemistry

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