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Berry size variation of vitis vinifera l. Cv. Syrah : morphological dimensions, berry composition and wine quality

dc.contributor.authorMelo, M. S.en_ZA
dc.contributor.authorSchultz, H. R.en_ZA
dc.contributor.authorVolschenk, C. G.en_ZA
dc.contributor.authorHunter, J. J.en_ZA
dc.date.accessioned2017-05-15T12:48:35Z
dc.date.available2017-05-15T12:48:35Z
dc.date.issued2015
dc.identifier.citationMelo, M. S., et al. 2015. Berry size variation of vitis vinifera l. Cv. Syrah : morphological dimensions, berry composition and wine quality. South African Journal for Enology and Viticulture, 36(1):1-10, doi:10.21548/36-1-931
dc.identifier.issn0253-939X (online)
dc.identifier.issn0253-939X (print)
dc.identifier.otherdoi:10.21548/36-1-931
dc.identifier.urihttp://hdl.handle.net/10019.1/101530
dc.descriptionCITATION: Melo, M. S., et al. 2015. Berry size variation of vitis vinifera l. Cv. Syrah : morphological dimensions, berry composition and wine quality. South African Journal for Enology and Viticulture, 36(1):1-10, doi:10.21548/36-1-931.
dc.descriptionThe original publication is available at http://www.journals.ac.za/index.php/sajev
dc.description.abstractBerry size has always been a quality factor in wine production. In this study, Syrah grapes from a single vineyard were classified into different size groups according to diameter: small (< 13 mm), medium (13 < diameter < 14 mm) and large (> 14 mm). Smaller berries were present in the highest and larger berries in the lowest numbers. Size distributions were similar in both seasons (2010/2011 and 2011/2012). Berry physical characteristics (mass, volume and skin area) increased with size, showing the same tendency in both years. Positive correlations between berry mass, volume and skin area were found, whereas these variables were negatively related with berry number/kg grapes. Berry volume was negatively correlated with dry skin weight. Skin surface area/berry volume seems to be an indicator of the “dilution” effect associated with increasing size, as larger berries presented the lowest values. In 2012 the grapes were harvested at a higher soluble solid level than in the previous year; large-sized berries presented the lowest levels in both years. The whole-berry analysis of total anthocyanins showed a decrease in concentration and increase in content per berry, from smaller to larger berries. Small berries and the control (naturally occurring berry size mixture) showed a higher extractability of anthocyanins and phenolic compounds than the medium and large berries. Sensorially, wines from medium berries were more consistent over the two years, scoring higher than the rest. Berry sizes were related to wine style differences, and knowing the population of berry sizes in the vineyard close to harvest would offer a possibility to predict wine styles.en_ZA
dc.description.urihttp://www.journals.ac.za/index.php/sajev/article/view/931
dc.format.extent10 pages
dc.language.isoen_ZAen_ZA
dc.publisherSouth African Journal for Enology and Viticulture
dc.subjectSyrahen_ZA
dc.titleBerry size variation of vitis vinifera l. Cv. Syrah : morphological dimensions, berry composition and wine qualityen_ZA
dc.typeArticleen_ZA
dc.description.versionPublisher's version
dc.rights.holderSouth African Journal for Enology and Viticulture


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