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Double maturation raisonnée: the impact of on-vine berry dehydration on the berry and wine composition of Merlot (Vitis vinifera L.).
J Sci Food Agric. 2017 Nov; 97(14):4835-4846.JS

Abstract

BACKGROUND

Double maturation raisonnée (DMR) is a potential canopy measure that affects grape and wine composition. The aim of this work was to study for the first time the DMR impact on the physical, biochemical and sensorial characteristics of the berries and wines of Merlot, one of the world's fastest-expanding grapevine varieties.

RESULTS

DMR significantly increased the content of soluble solids (1.2-fold), free amino nitrogen (1.8-fold) and acidity in berries but decreased the weight of 100 berries on harvest (approx. 28%). Irrespective of the vintage, DMR-treated grapes had a significantly higher content of non-astringent tannins (0.73-0.78 mg L-1) and anthocyanin extractability (34.7-36.4%) but a lower index of astringency (31.2-33.7) when compared to the control. Consequently, the DMR wines achieved higher alcohol, total acidity and extract, hydroxycinnamic acids, flavanol and flavonol contents, whereas the content of anthocyanins was similar to that of the control. Sensorial evaluation showed that DMR wines were not rated higher and would not be appreciated more than control wines.

CONCLUSION

Changes in berries during DMR altered the wine characteristics only in terms of primary metabolites. A reduced accumulation of phenolics, especially anthocyanin content, in the berry skin of DMR-treated grapes was not reflected in their presence in wines. To the best of our knowledge, this is the first paper that has reported an impact of DMR on the grape and wine composition of Merlot, as one of the most promising red varieties. © 2017 Society of Chemical Industry.

Authors+Show Affiliations

Biotechnical Faculty, Department of Agronomy, University of Ljubljana, Ljubljana, Slovenia.Biotechnical Faculty, Department of Agronomy, University of Ljubljana, Ljubljana, Slovenia.

Pub Type(s)

Evaluation Study
Journal Article

Language

eng

PubMed ID

28382623

Citation

Rusjan, Denis, and Maja Mikulic-Petkovsek. "Double Maturation Raisonnée: the Impact of On-vine Berry Dehydration On the Berry and Wine Composition of Merlot (Vitis Vinifera L.)." Journal of the Science of Food and Agriculture, vol. 97, no. 14, 2017, pp. 4835-4846.
Rusjan D, Mikulic-Petkovsek M. Double maturation raisonnée: the impact of on-vine berry dehydration on the berry and wine composition of Merlot (Vitis vinifera L.). J Sci Food Agric. 2017;97(14):4835-4846.
Rusjan, D., & Mikulic-Petkovsek, M. (2017). Double maturation raisonnée: the impact of on-vine berry dehydration on the berry and wine composition of Merlot (Vitis vinifera L.). Journal of the Science of Food and Agriculture, 97(14), 4835-4846. https://doi.org/10.1002/jsfa.8354
Rusjan D, Mikulic-Petkovsek M. Double Maturation Raisonnée: the Impact of On-vine Berry Dehydration On the Berry and Wine Composition of Merlot (Vitis Vinifera L.). J Sci Food Agric. 2017;97(14):4835-4846. PubMed PMID: 28382623.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Double maturation raisonnée: the impact of on-vine berry dehydration on the berry and wine composition of Merlot (Vitis vinifera L.). AU - Rusjan,Denis, AU - Mikulic-Petkovsek,Maja, Y1 - 2017/05/18/ PY - 2016/10/19/received PY - 2017/03/31/revised PY - 2017/03/31/accepted PY - 2017/4/7/pubmed PY - 2017/12/16/medline PY - 2017/4/7/entrez KW - DMR KW - FAN KW - anthocyanins KW - canopy KW - extractability KW - phenolic compounds, acids SP - 4835 EP - 4846 JF - Journal of the science of food and agriculture JO - J Sci Food Agric VL - 97 IS - 14 N2 - BACKGROUND: Double maturation raisonnée (DMR) is a potential canopy measure that affects grape and wine composition. The aim of this work was to study for the first time the DMR impact on the physical, biochemical and sensorial characteristics of the berries and wines of Merlot, one of the world's fastest-expanding grapevine varieties. RESULTS: DMR significantly increased the content of soluble solids (1.2-fold), free amino nitrogen (1.8-fold) and acidity in berries but decreased the weight of 100 berries on harvest (approx. 28%). Irrespective of the vintage, DMR-treated grapes had a significantly higher content of non-astringent tannins (0.73-0.78 mg L-1) and anthocyanin extractability (34.7-36.4%) but a lower index of astringency (31.2-33.7) when compared to the control. Consequently, the DMR wines achieved higher alcohol, total acidity and extract, hydroxycinnamic acids, flavanol and flavonol contents, whereas the content of anthocyanins was similar to that of the control. Sensorial evaluation showed that DMR wines were not rated higher and would not be appreciated more than control wines. CONCLUSION: Changes in berries during DMR altered the wine characteristics only in terms of primary metabolites. A reduced accumulation of phenolics, especially anthocyanin content, in the berry skin of DMR-treated grapes was not reflected in their presence in wines. To the best of our knowledge, this is the first paper that has reported an impact of DMR on the grape and wine composition of Merlot, as one of the most promising red varieties. © 2017 Society of Chemical Industry. SN - 1097-0010 UR - https://www.unboundmedicine.com/medline/citation/28382623/Double_maturation_raisonnée:_the_impact_of_on_vine_berry_dehydration_on_the_berry_and_wine_composition_of_Merlot__Vitis_vinifera_L___ L2 - https://doi.org/10.1002/jsfa.8354 DB - PRIME DP - Unbound Medicine ER -