Terroir 2006 banner
IVES 9 IVES Conference Series 9 Free amino acid composition of must from 7 Vitis vinifera L. cv. in Latium (Italy)

Free amino acid composition of must from 7 Vitis vinifera L. cv. in Latium (Italy)

Abstract

Free amino acid concentrations in must of 7 Vitis vinifera cultivars (Cabernet Franc, Syrah, Merlot, Montepulciano, Sangiovese, Cesanese d’Affile, Carmenere) grown in the Latium region (Italy) were monitored from 2003 to 2005. The cultivars were located in a homogeneous soil and climatic zone and with the same training system (Cordon Spur). The influence of climate was assessed with year-to-year variations of maximum and minimum temperatures and rainfall. The amino acids were compared individually to show year-to-year variations. The concentrations of individual amino acids differed considerable between years, whereas the amino acids profile did not differ significantly from one year to another in all 7 cultivars studied. Arginine, proline, varied between years, while proline: arginine ratio did not change. Arginine, proline, proline: arginine ratio, total free α–amino acid and total free α–amino N concentration were not correlated with soluble solids concentration at harvest. The sum total of amino acids in musts differed significantly from one variety to another and was used as an index to differentiate between varieties from the same area.

DOI:

Publication date: December 22, 2021

Issue: Terroir 2006

Type: Article

Authors

Francesca CECCHINI (1), Massimo MORASSUT (1) and Emilia GARCIA MORUNO (2)

(1) CRA Istituto Sperimentale per l’Enologia Via Cantina Sperimentale, 00049 Velletri (Roma), Italy
(2) CRA Istituto Sperimentale per l’Enologia Via Pietro Micca, 35, 00141 Asti, Italy

Contact the author

Keywords

cultivar, must, amino nitrogen

Tags

IVES Conference Series | Terroir 2006

Citation

Related articles…

Sensory analysis in oenology: the role of methodological differences in expert panel evaluations

Sensory analysis is an essential component of oenology, offering valuable insights into wine quality that influence decision-making in viticulture and winemaking.

Plant regeneration via somatic embryogenesis and preliminary trials for the application of the DNA-free genome editing in grapevine cv. Corvina veronese

Grapevine (Vitis spp.) is a globally significant fruit crop, and enhancing its agronomic and oenological traits is crucial to meet changing agricultural conditions and consumer demands. Conventional breeding has played a key role in domesticating grapevine varieties, but it is a time-consuming process to develop new cultivars with desirable traits for cultivation.
New plant breeding techniques (NpBTs) offer a potential revolution in grapevine cultivation, and genome editing has shown promise for targeted mutagenesis. The success of these biotechnological approaches relies on efficient in vitro regeneration protocols, particularly through somatic embryogenesis (SE).

Aroma profile of ‘Pedro Ximenez’ sweet musts obtained from dried grapes by different methods

Aroma fraction of musts from grapes ‘Pedro Ximenez’ traditionally sun-dried and chamber-dried at 40 ºC and at 50 ºC during 8, 5 and 4 days respectively, destined for the production of sweet wines in Montilla-Moriles region (southern Spain) was studied.

Effect of biological control agents on grapevine rhizosphere microbiome and grapevine defenses

Plant diseases are a major obstacle to crop production. The main approaches to battle plant diseases, consist of synthetic chemicals to attack infecting pathogens. However, concerns are increasing about the effects of chemicals in the environment, leading to an increase in the use of biocontrol agents (BCAs), due to their assets, such as, antagonism, and competition. In this study, we tested the hypothesis that the introduction of Bacillus subtilis PTA-271 (Bs PTA-271) and Trichoderma atroviride SC1 (Ta SC1) produce distinctive modifications in the composition and network structure of the grapevine rhizosphere microbial community, as well as grapevine induced defenses.

“Terroir” and grape and wine quality of native grape variety Istrian Malvasia

Viticulture and wine production have a historical tradition in Istria. First written document of vine cultivation in this area date since antiquity. The most wide spread vine variety in Istria is Istrian Malvasia (white variety), and it capture about 60% of total vineyard surface in Istria today.