Ability of human oral microbiota to produce wine odorant aglycones from odourless grape glycosidic aroma precursors
Grape aroma precursors are odourless glycosides that represent a natural reservoir of potential active odorant molecules in wines. Since the first step of wine consumption starts in the oral cavity, the processing of these compounds in the mouth could be an important factor in influencing aroma perception. Therefore, the objective of this work has been to evaluate the ability of human oral microbiota to produce wine odorant aglycones from odourless grape glycosidic aroma precursors previously isolated from white grapes. To do so, two methodological approaches involving the use of typical oral bacteria or the whole oral microbiota isolated from human saliva were followed. Odorant aglycones released in the culture mediums were isolated and analysed by HS-SPME-GC/MS. Results showed the ability of oral bacteria to hydrolyse grape aroma precursors, releasing different types of odorant molecules (terpenes, benzenic compounds and lipid derivatives). The hydrolytic activity seemed to be bacteria-dependent and was subject to large inter-individual variability.
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | artículo biblioteca |
| Published: |
Elsevier
2015
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| Subjects: | Hydrolytic activity, Glycosidic aroma precursors, Wine, Human oral microbiota, |
| Online Access: | http://hdl.handle.net/10261/127095 http://dx.doi.org/10.13039/501100003339 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/100012818 |
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