Cyclic polyalcohols: fingerprints to identify the botanical origin of natural woods used in wine aging.
Cyclic polyalcohol composition of 80 natural wood samples from different botanical species, with the majority of them used in the oenology industry for aging purposes, has been studied by gas chromatography-mass spectrometry (GC-MS) after its conversion into their trimethylsilyloxime derivatives. Each botanical species showed a different and specific cyclic polyalcohol profile. Oak wood samples were characterized by the richness in deoxyinositols, especially proto-quercitol. Meanwhile, other botanical species showed a very low content of cyclic polyalcohols. The qualitative and quantitative study of cyclic polyalcohols was a useful tool to characterize and differentiate woods of different botanical origin to guarantee the authenticity of chips used in the wine-aging process. Monosaccharide composition was also analyzed, showing some quantitative differences among species, but cyclic polyalcohols were the compounds that revealed the main differentiation power.
Área de Tecnología de los Alimentos, Facultad de Ciencias Químicas, Universidad de Castilla-La Mancha , Avenida Camilo José Cela 10, 13071 Ciudad Real, Spain. mariaelena.alanon@uclm.es
M Elena
ME
Alañón
M Consuelo
MC
Díaz-Maroto
Ignacio J
IJ
Díaz-Maroto
Pablo
P
Vila-Lameiro
M Soledad
MS
Pérez-Coello
D054812:Cyclitols / Q000032:analysis*; D005511:Food Handling / Q000379:methods*; D008401:Gas Chromatography-Mass Spectrometry; D009005:Monosaccharides / Q000032:analysis; D029963:Quercus / Q000737:chemistry; D013402:Sugar Alcohols / Q000032:analysis; D055549:Volatile Organic Compounds / Q000032:analysis; D014920:Wine / Q000032:analysis* / Q000145:classification*; D014934:Wood / Q000737:chemistry*
D054812:Cyclitols; D009005:Monosaccharides; D013402:Sugar Alcohols; D055549:Volatile Organic Compounds