Assessment of Physicochemical Differences in Nebbiolo Grape Berries from Different Production Areas and Sorted by Flotation

Rolle, Luca Giorgio Carlo; Torchio, Fabrizio; Giacosa, Simone; Segade, Susana Rı́o; Cagnasso, E.; Gerbi, Vincenzo

doi:10.5344/ajev.2012.11069

Cited by 40 publications

(54 citation statements)

References 31 publications

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“…The sugar concentration is directly linked to berry size and berry fresh weight by means of a negative correlation (Dai et al, 2009). These last two parameters also showed an inverse trend with berry density (Rolle et al, 2012b). Therefore, it was necessary to study the effect of berry maturity in terms of density on the texture parameters of …”

Section: Resultsmentioning

confidence: 99%

“…Some authors have even proposed exploiting the separation of berries from different cluster positions for the elaboration of different quality wines (Noguerol-Pato et al, 2012). Others have chosen the densimetric sorting of the berries as the best option in the winery to separate grapes with different quality parameters, this process being automatised through the use of densimetric berry-sorting machines (Rolle et al, 2012b).…”

Section: Introductionmentioning

confidence: 99%

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Berry Heterogeneity as a Possible Factor Affecting the Potential of Seed Mechanical Properties to Classify Wine Grape Varieties and Estimate Flavanol Release in Wine-like Solution

Torchio

Giacosa

Segade

et al. 2016

SAJEV

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Berry Heterogeneity as a Possible Factor Affecting the Potential of Seed Mechanical Properties to Classify Wine Grape Varieties and Estimate Flavanol Release in Wine-like Solution

Torchio

Giacosa

Segade

et al. 2016

SAJEV

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“…In a five-year study with 'Barbera' grown under four different training systems, must composition at harvest was similar among spur-pruned low-cordon, single high-wire cordon, and single Guyot systems, while split double Guyot produced grapes of overall inferior quality (Bernizzoni et al, 2009). Total phenolic contents were lower than those found by Guidoni & Ferrandino (2006), but the total anthocyanin contents were similar to or greater than those found in 'Nebbiolo' berries in its traditional growing region of Italy (Guidoni & Ferrandino, 2005/2006Guidoni et al, 2008;Rolle et al, 2012).…”

Section: Resultsmentioning

confidence: 45%

“…The mean number of buds left by treatment was 17, 24, 45, and 28, respectively. The pruning methods were performed by the end of August, in 2011. In 2012, the treatments were also applied, but evaluations were not performed due to damages caused by the late frost occurrence.…”

Section: Methodsmentioning

confidence: 99%

Pruning methods on the yield performance and oenological potential of 'Nebbiolo' grapevine

Allebrandt

Filho²,

Würz

et al. 2017

Pesq. agropec. bras.

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-The objective of this work was to evaluate the effect of different pruning methods on the yield performance and on the oenological potential of Vitis vinifera 'Nebbiolo', cultivated in high-altitude regions of Santa Catarina state, Brazil. The work was carried out in a commercial vineyard located in São Joaquim, SC, during the 2011/2012 and 2014/2015 crop seasons. The treatments consisted of four pruning systems: Guyot, Guyot Arch, and Cazenave (cane pruning systems), and cordon spur pruning. Production, vine balance, and grape composition were evaluated. In the cane pruning systems, a mean production of 2.0 kg per plant and Ravaz index below 2 were observed, with no change in the composition of the berries. In spur pruned vines, there was production only in 2015, with four bunches every ten plants. Yield and production of the 'Nebbiolo' grapes can be increased without losses of oenological potential, in the high-altitude regions of Santa Catarina state. The tested cane pruning methods are indicated for the growing of 'Nebbiolo' because all methods confer similar yield and vigor to this grapevine.

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“…Among the various descriptors that contribute to the definition of optimal ripeness (e.g. pH, titrable acidity, sugar concentration, phenolic and aromatic maturity), total soluble solids (generally expressed as the Brix degree) are the driving parameter in the choice of harvesting date (Rolle et al, 2012). It is usually assumed that once the target amount of soluble solids (technological maturity) is reached -especially if the harvest does not involve any previous selection or post-harvest sorting -the harvested grapes will only contain a certain amount of sub-standard berries (SSB).…”

Section: Introductionmentioning

confidence: 99%

Comparison of grape harvesting and sorting methods on factors affecting the must quality

Parenti¹,

Spugnoli²,

Masella³

et al. 2015

J Agricult Engineer

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This study compared two harvesting techniques (manual and mechanical) and three grape sorting methods (no sorting, manual, and densimetric) in attempts to obtain high-quality must. The trials were carried out in 2009 and 2010 in Tuscany, Italy. The effectiveness of the harvest-sorting chain was assessed on two parameters. Substandard berries (SSB) is the percentage of berries, which do not meet quality standards that enter the winemaking process, and material other than grape (MOG) is a measure of the cleanliness of the berries entering the process. In the two years the trial was run the grape maturation level was widely different; in 2009 the vintage was more far mature than in 2010. With respect to SSB content and harvesting methods, in 2009 (more mature grapes) hand-picking reduced SSB content, while in 2010 there were no differences between the two harvesting methods. In both years, densimetric sorting reduced SSB content, while there were no significant differences between no sorting and manual sorting. In terms of MOG content, both harvesting and sorting results were inconsistent. In 2009, MOG was lower in mechanically harvested grapes; while in 2010 it was lower in hand-picked grapes. As for sorting methods, in 2009 there were no differences in MOG, while in 2010 mechanical sorting produced better results. Our results question whether the post-harvest sorting techniques used by many estates are effective; particularly as the question has received little attention and no previous research has compared methods. Secondly, our study contributes to the debate on the effects of harvesting technique on wine quality.

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Assessment of Physicochemical Differences in Nebbiolo Grape Berries from Different Production Areas and Sorted by Flotation

Cited by 40 publications

References 31 publications

Berry Heterogeneity as a Possible Factor Affecting the Potential of Seed Mechanical Properties to Classify Wine Grape Varieties and Estimate Flavanol Release in Wine-like Solution

Berry Heterogeneity as a Possible Factor Affecting the Potential of Seed Mechanical Properties to Classify Wine Grape Varieties and Estimate Flavanol Release in Wine-like Solution

Pruning methods on the yield performance and oenological potential of 'Nebbiolo' grapevine

Comparison of grape harvesting and sorting methods on factors affecting the must quality

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