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- Title
An Interplay between a Face-Centred Composite Experimental Design and Solid-Phase Microextraction for Wine Aroma GC/MS Analysis.
- Authors
Tesoro, Carmen; Acquavia, Maria Assunta; Giussani, Barbara; Bianco, Giuliana; Pascale, Raffaella; Lelario, Filomena; Ciriello, Rosanna; Capece, Angela; Pietrafesa, Rocchina; Siesto, Gabriella; Di Capua, Angela
- Abstract
For oenological products, most of the intrinsic and extrinsic drivers of perceived quality are associated with specific aromatic profiles. Aromatic diversity has been recognized as a central element in perceived quality as it is able to transmit the complex interactions between grape variety, geographical characteristics, and viticultural and winemaking practices, including the fermentative process. A comprehensive characterization of flavour compounds by headspace solid-phase microextraction (HS-SPME) and gas chromatography coupled to mass spectrometric analysis is often needed in order to ascertain the quality of wine. HS-SPME requires a proper optimization that can be achieved through an adequate experimental design. Here, a HS-SPME/GC-MS based method was developed to investigate the volatile compounds of wine samples obtained by laboratory-scale fermentations. This was performed by inoculating a commercial Saccharomyces cerevisiae strain, which is used both as single starter and as mixed starter, with an indigenous Hanseniaspora osmophila strain. The experimental conditions of HS-SPME (extraction temperature and time) were optimized by applying a face-centred composite experimental design. Up to 95% of the total variance was explained by the proposed model. The optimized method allowed us to confirm the usefulness of combining the inoculation of grapes with selected yeast strains in co-culture situations in order to improve the wine bouquet.
- Subjects
EXPERIMENTAL design; WINES; SACCHAROMYCES cerevisiae; PERCEIVED quality; GAS chromatography
- Publication
Applied Sciences (2076-3417), 2023, Vol 13, Issue 7, p4609
- ISSN
2076-3417
- Publication type
Article
- DOI
10.3390/app13074609