‘Timorasso’ is an autochthonous, non-aromatic white grape variety cultivated mainly in the southwest of the Piedmont region (northwestern Italy). The sensory profile of wines produced from this variety evolves greatly with aging. In this study, 31 wines from 2015–2021 vintages were analyzed to investigate changes in sensory descriptors at various stages of aging and their correlation with physicochemical properties (wine basic parameters, color, and total polyphenols) and sensory-perceptual typicity. A sensory analysis was conducted by a panel of experts, who were asked to indicate the in-mouth and aroma descriptors. The aroma-related terms were analyzed as individual descriptors or grouped in “Categories”. Moreover, the panel rated the Color, In-Mouth, and Aroma typicity of these wines. ‘Timorasso’ based wines were found to have, on average, a relevant alcohol content (14.20 ± 0.56% v/v), moderate acidity (5.8 ± 0.6 g/L), and low pH (3.19 ± 0.09). In fact, Timorasso wines were sensorially identified in terms of citation frequency with the in-mouth descriptors acidity (32.9%), sapidity (25.5%), and minerality (17.4%). The aroma of younger wines (2 years of aging) was characterized by “Green”, “White flowers”, “White pulp fruit”, and “Citrus”. In general, the most cited aroma category was “Kerosene” (27.9%), distinguishing wines with 5–6 years of aging. “Kerosene” category correlated with Aroma typicity (p < 0.001), as well as with “Balsamic” (10.8%, p < 0.01) and “Empyreumatic” (5.5%, p < 0.05) aroma categories.

Lugana DOC is an Italian PDO white wine from the south coast of Lake Garda, produced with ‘Trebbiano di Lugana’ grapes (synonym of ‘Trebbiano di Soave’ and ‘Verdicchio bianco’) and characterised by tropical fruit, citrus, and balsamic notes due to the presence of volatile thiols and methyl salicylate, respectively. To deepen the knowledge of the aromatic profile of these wines and to study how they evolve during aging, the chemical and sensory profile of 12 Lugana DOC wines from the same winery in different consecutive vintages (2008–2019, evaluated in 2023) were analysed. Sensory analysis data were subjected to hierarchical cluster analysis, identifying four main groups that appropriately distinguished the aged wines from the young wines. Younger wines had a greenish yellow colour and were characterised mainly by fruity, citrus, floral, and flinty notes related to thiol compound contribution. Older wines, divided into three different clusters, shifted colour towards orange and were characterised by descriptors related to oxidative aging (e.g., cooked fruit, marsala-like, figs, nuts) or retained pleasant varietal and evolutionary notes (e.g., citrus, white flowers, flint, vanilla) confirmed by their chemical markers detected by GC-MS and LC-MS.

Fermentative skin contact is increasingly applied in white winemaking, yet its compositional and sensory consequences remain underexplored. This study evaluated Arneis and Erbaluce wines produced under four maceration regimes (0, 2, 7, and 14 days), as well as the effect of post-fermentative oxygenation for each wine obtained. Phenolic composition was quantified by LC-MS/MS and spectrophotometry, volatile compounds by GC-MS, and sensory attributes through a trained panel using a Rate-All-That-Apply (RATA) approach. Extended maceration substantially increased proanthocyanidins, flavan-3-ols, hydroxycinnamates, and flavonols, reaching levels comparable to red wines, while color shifted toward deeper yellow hues. Oxygenation reduced monomeric flavanols and esters and amplified oxidative notes. Sensory evaluation revealed heightened astringency and dryness in long-macerated samples, alongside diminished fruity aromas. These findings demonstrate that fermentative maceration strongly modulates the phenolic and aroma profiles of white wines, with oxygen exposure further refining their sensory expression.