RT article
T1 Determining optimum harvest time under Mediterranean conditions: developing a new model for measuring L-malic acid concentration in red grapes
A1 Olego, M. A.
A1 Álvarez, J. C.
A1 Tobes, A.
A1 De-Paz, José M.
A1 Coque, J. J. R.
A1 Garzón-Gimeno, Enrique
K1 Akaike Information Criteria
K1 Cross-validation
K1 Multiple regression model
K1 Titratable acidity
K1 F01  Crop husbandry
K1 F60  Plant physiology and biochemistry
K1 Malic acid
AB 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 ofmalic acid concentration is one of these. The main aim of this work was to develop a predictive model to determine the malic acidconcentration 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 parametersmeasured, titratable acidity (TA) had the greatest relative importance as a predictor variable for estimation of the concentration ofmalic 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 secondpower 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 grapesat harvest time.
PB Wiley Online Library
SN 1755-0238
YR 2016
FD 2016
LK http://hdl.handle.net/20.500.11939/6790
UL http://hdl.handle.net/20.500.11939/6790
LA en
NO 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.
DS MINDS@UW
RD May 28, 2023