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Type: Journal article
Title: Identification of natural oak lactone precursors in extracts of American and French oak woods by liquid chromatography-tandem mass spectrometry
Author: Hayasaka, Y.
Wilkinson, K.
Elsey, G.
Raunkjaer, M.
Sefton, M.
Citation: Journal of Agricultural and Food Chemistry, 2007; 55(22):9195-9201
Publisher: Amer Chemical Soc
Issue Date: 2007
ISSN: 0021-8561
Abstract: A method for the screening of potential natural oak lactone precursors in oak wood extracts using LC–MS/MS combined with information-dependent acquisition was developed. The method was applied to extracts of American and French oak woods. As a result, cis-3-methyl-4-galloyloxyoctanoic acid (ring-opened cis-oak lactone gallate), (3S,4S)- and (3S,4R)-3-methyl-4-O-β-D-glucopyranosyloctanoic acid (ring-opened cis- and trans-oak lactone glucoside), and (3S,4S)-3-methyl-4-O-(6′-O-galloyl)-β-D-glucopyranosyloctanoic acid (ring-opened cis-oak lactone galloylglucoside) were identified as natural oak lactone precursors in the extracts by comparison with the respective synthetic reference compounds. In addition, the ring-opened oak lactone rutinoside was tentatively identified in the extracts. Three apparent isomers of the ring-opened cis-oak lactone galloylglucoside were also observed.
Keywords: Oak; oak lactone; oak lactone precursor; LC–MS/MS
RMID: 0020074238
DOI: 10.1021/jf072171u
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Appears in Collections:Agriculture, Food and Wine publications

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