| Title: | Aroma potential of Brancellao grapes from different cluster positions |
| Author(s): | Noguerol-Pato R; Gonzalez-Barreiro C; Cancho-Grande B; Santiago JL; Martinez MC; Simal-Gandara J; |
| Address: | "Nutrition and Bromatology Group, Analytical and Food Chemistry Department, Faculty of Food Science and Technology, University of Vigo, Ourense Campus, E-32004 Ourense, Spain. Mision Biologica de Galicia, Consejo Superior de Investigaciones Cientificas (CSIC), Carballeira 8, E-36143 Salcedo (Pontevedra), Spain. Mision Biologica de Galicia, Consejo Superior de Investigaciones Cientificas (CSIC), Carballeira 8, E-36143 Salcedo (Pontevedra), Spain. Electronic address: carmenmartinez@mbg.cesga.es. Nutrition and Bromatology Group, Analytical and Food Chemistry Department, Faculty of Food Science and Technology, University of Vigo, Ourense Campus, E-32004 Ourense, Spain. Electronic address: jsimal@uvigo.es" |
| DOI: | 10.1016/j.foodchem.2011.10.042 |
| ISSN/ISBN: | 1873-7072 (Electronic) 0308-8146 (Linking) |
| Abstract: | "In this study the presence of aroma compounds in grapes of Brancellao (Vitis vinifera L.) was investigated in order to obtain its aroma potential fingerprint. It is well known that differences exist in aromatic compounds amongst grapevine varieties at ripening stages. Within the framework of an increasingly competitive market, the chance of obtaining different wines from vines of the same variety grown at the same vineyard is becoming of increasing importance. This can be done through the managing of the vineyard, but also some wineries have assayed the separation of the tip and shoulder berries of the clusters of a specific variety with this objective. In this work it is evaluated that, in the final stages of maturation, differences exist in the probable alcoholic degree, total acidity of the must, as well as in the aromatic composition of skin and flesh of berries coming from the tips and shoulders of the clusters. Gas chromatography coupled to mass spectrometry (GC-MS) was used to determine the aromatic composition, in the skin and flesh of each sample, either tip or shoulder berries from the clusters. The obtained results showed that there was not variability for the probable alcoholic degree and total acidity between the shoulders and tips, whereas there was variability for their aromatic composition. For the berries from the tips of the clusters most of volatiles were found in the flesh (except aldehydes) and spicy and floral nuances (with the only exception of beta-ionone) were in higher proportions. For the berries from the shoulders of the clusters, most of volatiles were found in the skin (monoterpenes, norisoprenoids, aldehydes, and C6 alcohols), where the flesh was slightly richer in aromatic alcohols, volatile phenols and pantolactone; beta-ionone and herbaceous nuances were in higher proportions. These results are promising for those wineries that are considering the chance of separating berries from tips and shoulders of the clusters for the elaboration of different quality wines" |
| Keywords: | Gas Chromatography-Mass Spectrometry/*methods *Smell Vitis/*chemistry Volatile Organic Compounds/*analysis Aroma compounds Gas chromatography-mass spectrometry (GC-MS) Grapes Odour activity value (OAV) Shoulders Tips Vitis vinifera L.cv.Brancellao; |
| Notes: | "MedlineNoguerol-Pato, R Gonzalez-Barreiro, C Cancho-Grande, B Santiago, J L Martinez, M C Simal-Gandara, J eng Research Support, Non-U.S. Gov't England 2012/05/01 Food Chem. 2012 May 1; 132(1):112-24. doi: 10.1016/j.foodchem.2011.10.042. Epub 2011 Oct 19" |
