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Phenolic characteristics acquired by berry skins of Vitis vinifera cv. Tempranillo in response to close-to-ambient solar ultraviolet radiation are mostly reflected in the resulting wines.
J Sci Food Agric. 2020 Jan 15; 100(1):401-409.JS

Abstract

BACKGROUND

It is widely recognized that ambient levels of solar ultraviolet (UV) radiation strongly influence the phenolic composition of grape skins. However, it is unknown to what extent this influence is reflected in the resulting wines.

RESULTS

Tempranillo grapevines were exposed or non-exposed to close-to-ambient solar UV levels using appropriate filters, and the phenolic profiles and antioxidant capacity of both grape skins and the resulting wines were analyzed. In total, 47 phenolic compounds were identified in skins and wines, including flavonols, anthocyanins, flavanols, stilbenes, and hydroxycinnamic and hydroxybenzoic acids. In UV-exposed grape skins, flavonols and anthocyanins increased, whereas flavanols and hydroxybenzoic acids showed no significant change. These characteristics were conserved in the resulting wines. However, for stilbenes, hydroxycinnamic acids and antioxidant capacity, the effect of UV on grape skins was not conserved in wines, probably as a result of changes during winemaking. In addition, color intensity, total phenols and total polyphenol index of wines elaborated from UV-exposed grapes increased (although non-significantly) compared to those made from non-UV-exposed grapes.

CONCLUSION

The phenolic composition of grape skins exposed to close-to-ambient solar UV could predict, to some extent, the phenolic composition of the resulting wines, particularly regarding higher contents of flavonols and anthocyanins. Thus, manipulating the UV radiation received by grape skins could improve wine quality by positively influencing color stability and healthy properties. To our knowledge, this is the first study in which the effects of solar UV radiation on phenolic composition have been assessed from grape skins to wine. © 2019 Society of Chemical Industry.

Authors+Show Affiliations

Faculty of Science and Technology, University of La Rioja, Logroño, La Rioja, Spain.Faculty of Science and Technology, University of La Rioja, Logroño, La Rioja, Spain.Faculty of Science and Technology, University of La Rioja, Logroño, La Rioja, Spain.Faculty of Science and Technology, University of La Rioja, Logroño, La Rioja, Spain.Faculty of Science and Technology, University of La Rioja, Logroño, La Rioja, Spain.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31637723

Citation

Del-Castillo-Alonso, María Ángeles, et al. "Phenolic Characteristics Acquired By Berry Skins of Vitis Vinifera Cv. Tempranillo in Response to Close-to-ambient Solar Ultraviolet Radiation Are Mostly Reflected in the Resulting Wines." Journal of the Science of Food and Agriculture, vol. 100, no. 1, 2020, pp. 401-409.
Del-Castillo-Alonso MÁ, Monforte L, Tomás-Las-Heras R, et al. Phenolic characteristics acquired by berry skins of Vitis vinifera cv. Tempranillo in response to close-to-ambient solar ultraviolet radiation are mostly reflected in the resulting wines. J Sci Food Agric. 2020;100(1):401-409.
Del-Castillo-Alonso, M. Á., Monforte, L., Tomás-Las-Heras, R., Martínez-Abaigar, J., & Núñez-Olivera, E. (2020). Phenolic characteristics acquired by berry skins of Vitis vinifera cv. Tempranillo in response to close-to-ambient solar ultraviolet radiation are mostly reflected in the resulting wines. Journal of the Science of Food and Agriculture, 100(1), 401-409. https://doi.org/10.1002/jsfa.10068
Del-Castillo-Alonso MÁ, et al. Phenolic Characteristics Acquired By Berry Skins of Vitis Vinifera Cv. Tempranillo in Response to Close-to-ambient Solar Ultraviolet Radiation Are Mostly Reflected in the Resulting Wines. J Sci Food Agric. 2020 Jan 15;100(1):401-409. PubMed PMID: 31637723.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Phenolic characteristics acquired by berry skins of Vitis vinifera cv. Tempranillo in response to close-to-ambient solar ultraviolet radiation are mostly reflected in the resulting wines. AU - Del-Castillo-Alonso,María Ángeles, AU - Monforte,Laura, AU - Tomás-Las-Heras,Rafael, AU - Martínez-Abaigar,Javier, AU - Núñez-Olivera,Encarnación, Y1 - 2019/11/09/ PY - 2019/06/20/received PY - 2019/09/16/revised PY - 2019/09/17/accepted PY - 2019/10/23/pubmed PY - 2019/12/18/medline PY - 2019/10/23/entrez KW - Vitis vinifera cv. Tempranillo KW - flavonoids KW - grape skins KW - phenolic composition KW - ultraviolet radiation KW - wine SP - 401 EP - 409 JF - Journal of the science of food and agriculture JO - J. Sci. Food Agric. VL - 100 IS - 1 N2 - BACKGROUND: It is widely recognized that ambient levels of solar ultraviolet (UV) radiation strongly influence the phenolic composition of grape skins. However, it is unknown to what extent this influence is reflected in the resulting wines. RESULTS: Tempranillo grapevines were exposed or non-exposed to close-to-ambient solar UV levels using appropriate filters, and the phenolic profiles and antioxidant capacity of both grape skins and the resulting wines were analyzed. In total, 47 phenolic compounds were identified in skins and wines, including flavonols, anthocyanins, flavanols, stilbenes, and hydroxycinnamic and hydroxybenzoic acids. In UV-exposed grape skins, flavonols and anthocyanins increased, whereas flavanols and hydroxybenzoic acids showed no significant change. These characteristics were conserved in the resulting wines. However, for stilbenes, hydroxycinnamic acids and antioxidant capacity, the effect of UV on grape skins was not conserved in wines, probably as a result of changes during winemaking. In addition, color intensity, total phenols and total polyphenol index of wines elaborated from UV-exposed grapes increased (although non-significantly) compared to those made from non-UV-exposed grapes. CONCLUSION: The phenolic composition of grape skins exposed to close-to-ambient solar UV could predict, to some extent, the phenolic composition of the resulting wines, particularly regarding higher contents of flavonols and anthocyanins. Thus, manipulating the UV radiation received by grape skins could improve wine quality by positively influencing color stability and healthy properties. To our knowledge, this is the first study in which the effects of solar UV radiation on phenolic composition have been assessed from grape skins to wine. © 2019 Society of Chemical Industry. SN - 1097-0010 UR - https://www.unboundmedicine.com/medline/citation/31637723/Phenolic_characteristics_acquired_by_berry_skins_of_Vitis_vinifera_cv__Tempranillo_in_response_to_close_to_ambient_solar_ultraviolet_radiation_are_mostly_reflected_in_the_resulting_wines_ L2 - https://doi.org/10.1002/jsfa.10068 DB - PRIME DP - Unbound Medicine ER -