Comprehensive profiling and marker identification in non-volatile citrus oil residues by mass spectrometry and nuclear magnetic resonance

详细信息    查看全文

• 作者：Guillaume Marti ; Julien Boccard ; Florence Mehl ; Benjamin Debrus ; Laurence Marcourt ; Philippe Merle ; Estelle Delort ; Lucie Baroux ; Horst Sommer ; Serge Rudaz ; Jean-Luc Wolfender
• 关键词：Cold-pressed lemon oils ; Classification ; Geographic origin ; 1H NMR ; UHPLC&ndash ; TOF-MS ; Chemometrics ; MS&ndash ; NMR correlation analysis
• 刊名：Food Chemistry
• 出版年：1 May, 2014
• 年：2014
• 卷：150
• 期：Complete
• 页码：235-245
• 全文大小：1810 K

文摘

The detailed characterization of cold-pressed lemon oils (CPLOs) is of great importance for the flavor and fragrance (F&F) industry. Since a control of authenticity by standard analytical techniques can be bypassed using elaborated adulterated oils to pretend a higher quality, a combination of advanced orthogonal methods has been developed. The present study describes a combined metabolomic approach based on UHPLC-TOF-MS profiling and ¹H NMR fingerprinting to highlight metabolite differences on a set of representative samples used in the F&F industry. A new protocol was set up and adapted to the use of CPLO residues. Multivariate analysis based on both fingerprinting methods showed significant chemical variations between Argentinian and Italian samples. Discriminating markers identified in mixtures belong to furocoumarins, flavonoids, terpenoids and fatty acids. Quantitative NMR revealed low citropten and high bergamottin content in Italian samples. The developed metabolomic approach applied to CPLO residues gives some new perspectives for authenticity assessment.