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J Agric Food Chem


Title:Aroma potential of oak battens prepared from decommissioned oak barrels
Author(s):Li S; Crump AM; Grbin PR; Cozzolino D; Warren P; Hayasaka Y; Wilkinson KL;
Address:"daggerSchool of Agriculture, Food and Wine, The University of Adelaide, PMB 1, Glen Osmond, SA 5064, Australia. double daggerAusvat Pty. Ltd., 7 Waye Court, Willunga, SA 5172, Australia. section signThe Australian Wine Research Institute, P.O. Box 197, Glen Osmond, SA 5064, Australia"
Journal Title:J Agric Food Chem
Year:2015
Volume:20150327
Issue:13
Page Number:3419 - 3425
DOI: 10.1021/acs.jafc.5b00339
ISSN/ISBN:1520-5118 (Electronic) 0021-8561 (Linking)
Abstract:"During barrel maturation, volatile compounds are extracted from oak wood and impart aroma and flavor to wine, enhancing its character and complexity. However, barrels contain a finite pool of extractable material, which diminishes with time. As a consequence, most barrels are decommissioned after 5 or 6 years. This study investigated whether or not decommissioned barrels can be 'reclaimed' and utilized as a previously untapped source of quality oak for wine maturation. Oak battens were prepared from staves of decommissioned French and American oak barrels, and their composition analyzed before and after toasting. The oak lactone glycoconjugate content of untoasted reclaimed oak was determined by liquid chromatography-tandem mass spectrometry, while the concentrations of cis- and trans-oak lactone, guaiacol, 4-methlyguaiacol, vanillin, eugenol, furfural, and 5-methylfurfural present in toasted reclaimed oak were determined by gas chromatography-mass spectrometry. Aroma potential was then evaluated by comparing the composition of reclaimed oak with that of new oak. Comparable levels of oak lactone glycoconjugates and oak volatiles were observed, demonstrating the aroma potential of reclaimed oak and therefore its suitability as a raw material for alternative oak products, i.e., chips or battens, for the maturation of wine. The temperature profiles achieved during toasting were also measured to evaluate the viability of any yeast or bacteria present in reclaimed oak"
Keywords:Adolescent Adult Benzaldehydes/analysis Eugenol/analysis Food Handling/*instrumentation/methods Food Packaging Furaldehyde/analysis Gas Chromatography-Mass Spectrometry Guaiacol/analysis Humans Lactones/analysis Middle Aged Odorants/analysis *Quercus Recy;
Notes:"MedlineLi, Sijing Crump, Anna M Grbin, Paul R Cozzolino, Daniel Warren, Peter Hayasaka, Yoji Wilkinson, Kerry L eng Research Support, Non-U.S. Gov't 2015/03/17 J Agric Food Chem. 2015 Apr 8; 63(13):3419-25. doi: 10.1021/acs.jafc.5b00339. Epub 2015 Mar 27"

 
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