Journal article published in International Journal of Food Science and Technology, volume 46, pp. 386–394.

Authors: Susana Río Segade, Elvira Soto Vázquez, Ignacio Orriols, Simone Giacosa and Luca Rolle.

Abstract

Ribeira Sacra Denomination of Origin is a steep slope viticulture area located in Galicia (northwest of Spain) and it is divided in five different subzones. Taking into account that grape composition depends not only on the grape cultivar used but also on environmental factors and cultural practices, Texture Analysis has been proposed to assess the grape mechanical properties of those subzones. With the aid of principal component analysis, berry skin break energy measured on bottom side and berry cohesiveness have been suggested as the best mechanical properties for the subzones differentiation. Moreover, significant correlations among mechanical parameters and anthocyanin extractability index were found. A regression hyperplane allowed estimating anthocyanin extractability from berry skin thickness and Young´s modulus measured on the lateral side of grapes. The speed of mechanical analysis facilitates the planning and management of pressing and maceration processes as a consequence of the drastic reduction of sample treatment time.

Key words texture analysis; zoning; red grapes; anthocyanins; extractability

BibTeX entry: click to show

@article{
	2318_79961,
	url = {https://hdl.handle.net/2318/79961},
	author = {Río Segade, Susana and Soto Vázquez, Elvira and Orriols, Ignacio and Giacosa, Simone and Rolle, Luca},
	title = {Possible use of texture characteristics of winegrapes as markers for zoning and their relationship with anthocyanin extractability index},
	year = {2011},
	journal = {International Journal of Food Science and Technology},
	volume = {46},
	abstract = {Ribeira Sacra Denomination of Origin is a steep slope viticulture area located in Galicia (northwest of Spain) and it is divided in five different subzones. Taking into account that grape composition depends not only on the grape cultivar used but also on environmental factors and cultural practices, Texture Analysis has been proposed to assess the grape mechanical properties of those subzones. With the aid of principal component analysis, berry skin break energy measured on bottom side and berry cohesiveness have been suggested as the best mechanical properties for the subzones differentiation. Moreover, significant correlations among mechanical parameters and anthocyanin extractability index were found. A regression hyperplane allowed estimating anthocyanin extractability from berry skin thickness and Young´s modulus measured on the lateral side of grapes. The speed of mechanical analysis facilitates the planning and management of pressing and maceration processes as a consequence of the drastic reduction of sample treatment time.},
	keywords = {texture analysis; zoning; red grapes; anthocyanins; extractability},
	doi = {10.1111/j.1365-2621.2010.02489.x},	
	pages = {386--394}
}

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