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Development of the gas chromatography/mass spectrometry-based aroma designer capable of modifying volatile chemical compositions in complex odors.
Obara, Kaname; Uenoyama, Reiko; Obata, Yutaro; Miyazaki, Masao.
Afiliação
  • Obara K; Division of Agriculture, Graduate School of Arts and Sciences, Iwate University, 3-18-8 Ueda, Morioka, Iwate 020-8550, Japan.
  • Uenoyama R; Department of Bioresources Science, The United Graduate School of Agricultural Sciences, Iwate University, 3-18-8 Ueda, Morioka, Iwate 020-8550, Japan.
  • Obata Y; Department of Biological Chemistry and Food Sciences, Faculty of Agriculture, Iwate University, 3-18-8 Ueda, Morioka, Iwate 020-8550, Japan.
  • Miyazaki M; Division of Agriculture, Graduate School of Arts and Sciences, Iwate University, 3-18-8 Ueda, Morioka, Iwate 020-8550, Japan.
Chem Senses ; 492024 01 01.
Article em En | MEDLINE | ID: mdl-38386845
ABSTRACT
Many volatile organic compounds (VOCs) are used to produce various commercial products with aromas mimicking natural products. The VOCs responsible for aromas have been identified from many natural products. The current major strategy is to analyze chemical compositions and aroma qualities of individual VOCs using gas chromatography/mass spectrometry (GC/MS) and GC-olfactometry. However, such analyses cannot determine whether candidate VOCs contribute to the characteristic aroma in mixtures of many VOCs. In this study, we developed a GC/MS-based VOC collection/omission system that can modify the VOC compositions of samples easily and rapidly. The system is composed of GC/MS with a switching unit that can change gas flow routes between MS and a VOC collection device. We first applied this system to prepare gas samples for omission tests, and the aroma qualities of VOC mixtures with and without some VOCs were evaluated by panelists. If aroma qualities were different between the 2 samples, the omitted VOCs were likely key odorants. By collecting VOCs in a gas bag attached to the collection device and transferring some VOCs to MS, specific VOCs could be omitted easily from the VOC mixture. The system could prepare omission samples without chemical identification, preparation of each VOC, and laborious techniques for mixing VOCs, thus overcoming the limitations of previous methods of sample preparation. Finally, the system was used to prepare artificial aromas by replacing VOC compositions between different samples for screening of key odorants. In conclusion, the system developed here can improve aroma research by identifying key odorants from natural products.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Produtos Biológicos / Compostos Orgânicos Voláteis Idioma: En Ano de publicação: 2024 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Produtos Biológicos / Compostos Orgânicos Voláteis Idioma: En Ano de publicação: 2024 Tipo de documento: Article