TY - JOUR
T1 - Volatile profile of cork as a tool for classification of natural cork stoppers
AU - Furtado, Isabel
AU - Oliveira, Ana Sofia
AU - Amaro, Filipa
AU - Lopes, Paulo
AU - Cabral, Miguel
AU - Bastos, Maria de Lourdes
AU - Guedes de Pinho, Paula
AU - Pinto, Joana
N1 - Funding Information:
This work was supported by the CorkPlus 3310 project – “Contribution of cork stoppers to the chemical and sensory properties of bottled wine” co-financed by the European Regional Development Fund ( FEDER ) through the Operational Programme for Competitiveness and Internationalisation ( COMPETE 2020), Portugal, and UID/MULTI/04378/2013 – POCI/01/0145/FEDER/07728 . This work was also supported by the Applied Molecular Biosciences Unit - UCIBIO which is financed by national funds from Foundation for Science and Technology ( FCT ) ( UIDB/04378/2020 ).
Funding Information:
This work was supported by the CorkPlus 3310 project ? ?Contribution of cork stoppers to the chemical and sensory properties of bottled wine? co-financed by the European Regional Development Fund (FEDER) through the Operational Programme for Competitiveness and Internationalisation (COMPETE 2020), Portugal, and UID/MULTI/04378/2013 ? POCI/01/0145/FEDER/07728. This work was also supported by the Applied Molecular Biosciences Unit - UCIBIO which is financed by national funds from Foundation for Science and Technology (FCT) (UIDB/04378/2020).
Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2021/2/1
Y1 - 2021/2/1
N2 - An untargeted approach, focused in the profile of volatile organic compounds (VOCs), was applied to differentiate natural cork stoppers with different levels of porosity, coded as Group 1 (low porosity), Group 2 (intermediate porosity) and Group 3 (high porosity). Statistically significant alterations were found in the levels of several VOCs between cork stoppers of low and intermediate porosity when compared with those of high porosity (Group 1 vs. 3 and Group 2 vs. 3). In addition, the levels of 2-pentylfuran, cyclene, camphene, camphor, limonene and eucalyptol enabled the discrimination of cork stoppers with low porosity (Group 1) into two subgroups, while furfural and 5-methyl-2-furfural enabled the discrimination of subgroups within the intermediate and high porosity stoppers (Group 2 and 3). A headspace solid-phase microextraction coupled to gas chromatography tandem mass spectrometry (HS-SPME-GC-MS/MS) method was developed to quantify the subgroup discriminant compounds, which may provide a proof-of-concept for the development of an efficient method to be applied in cork industry.
AB - An untargeted approach, focused in the profile of volatile organic compounds (VOCs), was applied to differentiate natural cork stoppers with different levels of porosity, coded as Group 1 (low porosity), Group 2 (intermediate porosity) and Group 3 (high porosity). Statistically significant alterations were found in the levels of several VOCs between cork stoppers of low and intermediate porosity when compared with those of high porosity (Group 1 vs. 3 and Group 2 vs. 3). In addition, the levels of 2-pentylfuran, cyclene, camphene, camphor, limonene and eucalyptol enabled the discrimination of cork stoppers with low porosity (Group 1) into two subgroups, while furfural and 5-methyl-2-furfural enabled the discrimination of subgroups within the intermediate and high porosity stoppers (Group 2 and 3). A headspace solid-phase microextraction coupled to gas chromatography tandem mass spectrometry (HS-SPME-GC-MS/MS) method was developed to quantify the subgroup discriminant compounds, which may provide a proof-of-concept for the development of an efficient method to be applied in cork industry.
KW - HS-SPME-GC-MS/MS
KW - Levels of porosity
KW - Natural cork stoppers
KW - Volatile organic compounds
UR - http://www.scopus.com/inward/record.url?scp=85092025981&partnerID=8YFLogxK
U2 - 10.1016/j.talanta.2020.121698
DO - 10.1016/j.talanta.2020.121698
M3 - Article
C2 - 33303150
SN - 0039-9140
VL - 223
JO - Talanta
JF - Talanta
M1 - 121698
ER -