Effect of Grapevine Canopy Side on Selected Sensory Attributes of Pinotage and Cabernet Sauvignon Wines

  • P.P. Minnaar ARC Infruitec-Nietvoorbij, Stellenbosch
  • N.P. Jolly ARC Infruitec-Nietvoorbij, Stellenbosch
  • N.S. Ntushelo ARC Biometry, Stellenbosch


Grapevine row direction, canopy exposure and grape maturity can define the sensory attributes of wine.  From this perspective, canopy exposure that favours colour intensity, astringency, aroma intensity and balanced acidity could result in improved wine quality. The aim of this study was to examine the effect of canopy exposure on selected sensory attributes of Pinotage and Cabernet Sauvignon wines from Paarl, Durbanville and Darling in South Africa. Pinotage and Cabernet Sauvignon grapes were harvested from both sides of the canopy of vines planted to E-W and N-S directions. Wines were made from the harvested grapes. Grapes and wines underwent physicochemical and sensory analysis. Durbanville Cabernet
Sauvignon from the south side had decreased alcohol content. Total acidity, residual sugar (RS) and pH were not different between sides. Wines from the east side had increased colour, aroma, mouthfeel and overall quality. Paarl Cabernet Sauvignon was not different between sides for any physicochemical characteristics, except TA. Wines from the south side had increased colour, aroma, mouthfeel and overall quality. Darling Pinotage was not different between sides for any physicochemical characteristics. Wines from the west side had increased intensity of aroma and acidity, whereas Durbanville Pinotage from the east side had increased alcohol, pH, TA, colour and aroma intensity, as well as overall quality. The results
confirm that canopy exposure has an effect on the wine sensory attributes. This investigation illustrates the variation in sensory attribute scores of Pinotage and Cabernet Sauvignon wines from different canopy sides. Canopy exposure in a vineyard of a specific region, orientated to an E-W or N-S direction, which favours colour intensity, aroma intensity and/or mouthfeel, could result in improved wine quality. Future investigations should focus on samples collected over at least three consecutive vintages, as well as the monitoring of temperature and photosynthetic active radiation.


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Allegro, G., Pastore, C., Valentini, G. & Filippetti, I., 2019. Effects of sunlight exposure on flavonol content and wine sensory of the white winegrape Grechetto Gentile. Am. J. Enol. Vitic. In Press. DOI: 10.5344/ajev.2019.17108

Bonada, M. & Sadras, V.O., 2014. Review: critical appraisal of methods to investigate the effect of temperature on grapevine berry composition. Aust. J. Grape Wine Res. 21, 1-17.

Bureau, S.M., Baumes, R.L. & Razungles, A.J., 2000. Effect of vine or bunch shading on the glycosylated flavour precursors of Vitis vinifera L. cv. Syrah. J. Agric. Food Chem. 48, 1290-1297.

Casassa, F.L., Beaver, C.W., Mireles, M.S. & Harbertson, J.F., 2013. Effects of extended maceration and ethanol concentration on the extraction and evolution of phenolics, colour components and sensory attributes of Merlot wines. Aust. J. Grape Wine Res. 19, 25-39.

Chorti, E.S.G., Guidoni, S., Ferrandino, A. & Novello, V., 2010. Effect of different cluster sunlight-exposure levels on ripening and anthocyanin accumulation in Nebbiolo grapes. Am. J. Enol. Vitic. 61, 23-30.

Cortell, J.M., Halbleib, M., Gallagher, A.V., Righetti, T.L. & Kennedy, J.A., 2007. Influence of vine vigour on grape (Vitis vinifera L. cv. Pinot noir) anthocyanins. 1. Anthocyanin concentration and composition in fruit. J. Agric. Food Chem. 55, 6575-6584.

Demiglio, P. & Pickering, G.J., 2008. The influence of ethanol and pH on the taste and mouthfeel sensations elicited by red wine. Food Agric. Environ. 6, 143-150.

Downey, M.O., Dokoozlian, N.K. & Krstic, M.P., 2006. Cultural practice and environmental impacts on the flavonoid composition of grapes and wine: a review on recent research. Am. J. Enol. Vitic. 57, 257-268.

Ferrer-Gallego, R., Hernández-Hierro, J.M., Rivas-Gonzalo, J.C. & Escribana-Bailón, M.T., 2014. Sensory evaluation of bitterness and astringency sub-qualities of wine phenolic compounds: synergistic effect and modulation by aromas. Food Res. Int. 62, 1100-1107.

Fontoin, H., Saucier, C., Teissedre, P.L., & Glories, Y., 2008. Effect of pH, ethanol, and acidity on astringency and bitterness of grape-seed tannin oligomers in model wine solution. Food Qual. Pref. 19, 286-291.

Friedel, M., Weber, M., Zacharias, J., Patz, C-D. & Stoll, M., 2012. Impact of microclimate on berry quality parameters of white Riesling (Vitis vinifera L.). In: Proc. IXth Int. Terroir Congress, July 2012, Dijon, France. pp. 8-11.

Gawel, R., 1997. The use of language by trained and untrained wine tasters. J. Sens. Stud. 12, 267-284.

Gawel, R., 1998. Red wine astringency: a review. Aust. J. Grape Wine Res. 4, 74-95.

Gawel, R. & Godden, P.W., 2008. Evaluation of the consistency of wine quality assessments from expert wine tasters. Aust. J. Grape Wine Res. 14, 1-9.

Gawel, R., Van Sluyter, S.C., Smith, P.A. & Waters, E.J., 2013. Effect of pH and alcohol on perception of phenolic charater in white wine. Am. J. Enol. Vitic. 64, 425-429.

Gil, M., Esterueleas, M.,González, E., Kontoudakis, N., Jiméz, J., Fort, F., Canals, J.M., Hermosín-Gutiérrez, I. & Zamora, F., 2013. Effect of two different treatments for reducing grape yield in Vitis vinefera cv. Syrah on wine composition and quality: Berry thinning versus cluster thinning. J. Agric. Food Chem. 61, 4968-4978.

González-Neves, G., Barreiro, L., Gil, G. & Carbonneau, A., 2004. Anthocyanic composition of Tannat grapes from the south region of Uruguay. Anal. Chim. Acta 513, 197-201.

Gregan, S.M., Wargent, J.J., Liu, L., Shinkle, J., Hofman, R., Winefield, C., Trought, M. & Jordan, B., 2012. Effects of solar ultra violet radiation and canopy manipulation on the biochemical composition of Sauvignon blanc grapes. Aust. J. Grape Wine Res. 18, 227-238.

Guinard, J.X., Pangborn, R.M. & Lewis, M.J., 1996. Time course of astringency in wine upon repeated ingestion. Am. J. Enol. Vitic. 37, 184-189.

Hunter, J.J. & Volschenk, C.G., 2008. Implication of grapevine row orientation in South Africa. In: Proc. VIIIth Int. Terroir Congress, July 2008, Nyon, Switzerland. pp. 336-342.

Hunter, J.J., Volschenk, C.G. & Bonnardot, V., 2010. Linking grapevine row orientation to a changing climate in South Africa. Proc. Sixtieth German Grape and Wine Cong, Stuttgart, pp. 60-70.

Hunter, J.J., Volschenk, C.G., 2018. Chemical composition and sensory properties of non-wooded and wooded Shiraz (Vitis vinifera L.) wine as affected by vineyard row orientation and grape ripeness level. J. Sci. Food Agric. 98, 2689-2704.

Louarn, G., Dauzat, J., Le Coeur, J. & Le Bon, E., 2008. Influence of trellis system and shoot positioning on light interception and distribution in two grapevine cultivars with different architectures: an original approach based on 3D canopy modelling. Aust. J. Grape Wine Res. 14, 143-152.

Mané, C., Souquet, J.M., Olle, D., Verries, C., Veran, F., Mazerolles, G. & Fulcrand, H., 2007. Optimisation of simultaneous flavanol, phenolic acid, and anthocyanin extraction from grapes using an experimental design: Application to the characterisation of Champagne grape varieties. J. Agric. Food Chem. 55, 7224-7233.

McRae, J.M. & Kennedy, J.A., 2011. Wine and grape tannin interactions with salivary proteins and their impact on astringency: A review of current research. Molecules 16, 2348-2350.

Minnaar, P.P., De Villiers, A.J. & Hunter, J.J., 2013. Anthocyanins, flavanols and flavonols of Vitis vinifera L. cv. Syrah wines as affected by row orientation and ripness levels. In: Proc. 18th Int. Symp. GiESCO, July 2013, Porto, Portugal. pp. 417-421.

Oberholster, A., 2008. Investigation of chemical and sensory properties of red wine pigments. PhD Thesis. University of Adelaide, Australia. pp. 22-25.

Næs, T., Brockhoff, P.B. & Tomic, O., 2010. Statistics for sensory and consumer science. West Sussex, U K, John Wiley & Sons.

Noble, A.C., 1995. Application of time-intensity procedures for the evaluation of taste and mouth feel. Am. J. Enol. Vitic. 46, 128-133.

Ott, R.L., 1998. An Introduction to Statistical Methods and Data Analysis. Belmont, California. Duxbury Press pp. 807-837.

Pérez-Lamela, C., García-Falcón, M.S., Simal-Gándara, J. & Orriols-Fernádez, I., 2007. Influence of grape variety, vine system, and oenological treatments on the colour stability of young red wines. Food Chem. 101, 601-606.

Ristic, R., Downey, M.O., Iland, P.G., Bindon, K., Francis, I.L., Herderich, M. & Robinson, S.P., 2007. Exclusion of sunlight from Syrah grapes alters wine colour, tannin and sensory properties. Aust. J. Grape Wine Res. 13, 53-65.

Río-Segade, S., Soto-Vázquez, E., Vázquez-Rodríguez, E.I. & Rego-Martínez, J.F., 2009. Influence of training system on chromatic characteristics and phenolic composition in red wines. Eur. Food Res. Technol. 229, 763-770.

Rustioni, L., Rossoni, M., Calatroni, M. & Failla, O., 2011. Influence of bunch exposure on anthocyanin extractability from grape skins (Vitis vinifera L.). Vitis 50, 137-143.

Ryaona, I., Pan, B.S., Intrigliolo, D. S., Lakso, A.N. & Sacks, G.L., 2008. Effect of cluster light exposure on 3-isobutyl-2-methoxypyrazine synthesis and degradation patterns in red wine grapes (Vitis vinifera L. cv. Cabernet franc). J. Agric. Food Chem. 56, 10838-10846.

Sadras, V.O., Moran, M.A. & Bonada, M., 2012. Effects of elevated temperature in grapevine. I. Berry sensory traits. Aust. J. Grape Wine Res. 19, 95-106.

SAS Institute, Inc., 1999. SAS/STAT User's Guide, Volume 2, Version 9 (1st ed). Campus Drive, Cary, North Carolina, 27513.

Shapiro, S.S. & Wilk, M.B., 1965. An Analysis of Variance Test for Normality (complete samples), Biometrika 52, 591-611.

Šuklje, K., Antalick, G., Coetzee, Z., Schmidtke, L.M., Baša-Česnik, H., Brandt, J., du Toit, W.J., Lisjak, K. & Deloire, A., 2014. Effect of leaf removal and ultraviolet radiation on the composition and sensory perception of Vitis vinifera L. cv. Sauvignon Blanc wine. Aust. J. Grape Wine Res. 20, 223-233.

Vilanova, M. & Martinez, C., 2007. First study of determination of aromatic compounds of red wine from Vitis vinifera cv. Castanal grown in Galicia (NW Spain). Eur. Food Res. Technol. 224, 431-436.