Determining optimum harvest time under Mediterranean conditions: developing a new model for measuring L-malic acid concentration in red grapes
Background and Aims: Malic acid concentration varies as berries develop, reaching its highest value just before veraison. Objective criteria for choosing the optimal harvest time require chemical or physicochemical measurements; the determination of malic acid concentration is one of these. The ma...
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| Formato: | article |
| Lenguaje: | Inglés |
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Wiley Online Library
2020
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| Acceso en línea: | http://hdl.handle.net/20.500.11939/6790 https://onlinelibrary.wiley.com/doi/10.1111/ajgw.12181 |
| _version_ | 1855032490455990272 |
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| author | Olego, M. A. Álvarez, J. C. Tobes, A. De-Paz, José M. Coque, J. J. R. Garzón-Gimeno, Enrique |
| author_browse | Coque, J. J. R. De-Paz, José M. Garzón-Gimeno, Enrique Olego, M. A. Tobes, A. Álvarez, J. C. |
| author_facet | Olego, M. A. Álvarez, J. C. Tobes, A. De-Paz, José M. Coque, J. J. R. Garzón-Gimeno, Enrique |
| author_sort | Olego, M. A. |
| collection | ReDivia |
| description | Background and Aims: Malic acid concentration varies as berries develop, reaching its highest value just before veraison.
Objective criteria for choosing the optimal harvest time require chemical or physicochemical measurements; the determination of
malic acid concentration is one of these. The main aim of this work was to develop a predictive model to determine the malic acid
concentration in grapes at harvest time as an alternative to commonly used methods, such as HPLC and enzymatic analysis.
Methods and Results: The red grape cultivar Vitis vinifera L. Tempranillo was used in this study. Of the 11 predictive parameters
measured, titratable acidity (TA) had the greatest relative importance as a predictor variable for estimation of the concentration of
malic acid in must at harvest time.
Conclusions: The daily average rainfall from harvest time to the next season sampling time, pH and TA and TA raised to the second
power have been shown to be significant contributors in predicting malic acid concentration in grapes at harvest time.
Significance of the Study: This work describes a multiple regression model that explains malic acid concentration in red grapes
at harvest time. |
| format | article |
| id | ReDivia6790 |
| institution | Instituto Valenciano de Investigaciones Agrarias (IVIA) |
| language | Inglés |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | Wiley Online Library |
| publisherStr | Wiley Online Library |
| record_format | dspace |
| spelling | ReDivia67902025-04-25T14:47:50Z Determining optimum harvest time under Mediterranean conditions: developing a new model for measuring L-malic acid concentration in red grapes Olego, M. A. Álvarez, J. C. Tobes, A. De-Paz, José M. Coque, J. J. R. Garzón-Gimeno, Enrique Akaike Information Criteria Cross-validation Multiple regression model Titratable acidity F01 Crop husbandry F60 Plant physiology and biochemistry Malic acid Background and Aims: Malic acid concentration varies as berries develop, reaching its highest value just before veraison. Objective criteria for choosing the optimal harvest time require chemical or physicochemical measurements; the determination of malic acid concentration is one of these. The main aim of this work was to develop a predictive model to determine the malic acid concentration in grapes at harvest time as an alternative to commonly used methods, such as HPLC and enzymatic analysis. Methods and Results: The red grape cultivar Vitis vinifera L. Tempranillo was used in this study. Of the 11 predictive parameters measured, titratable acidity (TA) had the greatest relative importance as a predictor variable for estimation of the concentration of malic acid in must at harvest time. Conclusions: The daily average rainfall from harvest time to the next season sampling time, pH and TA and TA raised to the second power have been shown to be significant contributors in predicting malic acid concentration in grapes at harvest time. Significance of the Study: This work describes a multiple regression model that explains malic acid concentration in red grapes at harvest time. 2020-11-19T13:15:07Z 2020-11-19T13:15:07Z 2016 article publishedVersion Olego, M. A., Alvarez, J. C., Tobes, A., de Paz, J. M., Coque, J. J. R., & Garzón‐Jimeno, E. (2016). Determining optimum harvest time under M editerranean conditions: developing a new model for measuring L‐malic acid concentration in red grapes. Australian journal of grape and wine research, 22(2), 232-239. 1755-0238 http://hdl.handle.net/20.500.11939/6790 10.1111/ajgw.12181 https://onlinelibrary.wiley.com/doi/10.1111/ajgw.12181 en Atribución-NoComercial-SinDerivadas 3.0 España http://creativecommons.org/licenses/by-nc-nd/3.0/es/ closedAccess Wiley Online Library electronico |
| spellingShingle | Akaike Information Criteria Cross-validation Multiple regression model Titratable acidity F01 Crop husbandry F60 Plant physiology and biochemistry Malic acid Olego, M. A. Álvarez, J. C. Tobes, A. De-Paz, José M. Coque, J. J. R. Garzón-Gimeno, Enrique Determining optimum harvest time under Mediterranean conditions: developing a new model for measuring L-malic acid concentration in red grapes |
| title | Determining optimum harvest time under Mediterranean conditions: developing a new model for measuring L-malic acid concentration in red grapes |
| title_full | Determining optimum harvest time under Mediterranean conditions: developing a new model for measuring L-malic acid concentration in red grapes |
| title_fullStr | Determining optimum harvest time under Mediterranean conditions: developing a new model for measuring L-malic acid concentration in red grapes |
| title_full_unstemmed | Determining optimum harvest time under Mediterranean conditions: developing a new model for measuring L-malic acid concentration in red grapes |
| title_short | Determining optimum harvest time under Mediterranean conditions: developing a new model for measuring L-malic acid concentration in red grapes |
| title_sort | determining optimum harvest time under mediterranean conditions developing a new model for measuring l malic acid concentration in red grapes |
| topic | Akaike Information Criteria Cross-validation Multiple regression model Titratable acidity F01 Crop husbandry F60 Plant physiology and biochemistry Malic acid |
| url | http://hdl.handle.net/20.500.11939/6790 https://onlinelibrary.wiley.com/doi/10.1111/ajgw.12181 |
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