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Hydroxycinnamic acids as affected by different fertilization of Rebula grapevines
Author(s) -
Brataševec Kristina,
Vodopivec Branka Mozetič,
Petek Marko,
Sivilotti Paolo
Publication year - 2015
Publication title -
journal of plant nutrition and soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 87
eISSN - 1522-2624
pISSN - 1436-8730
DOI - 10.1002/jpln.201500005
Subject(s) - browning , human fertilization , chemistry , vitis vinifera , hydroxycinnamic acid , nutrient , composition (language) , food science , wine , horticulture , botany , agronomy , biology , organic chemistry , antioxidant , linguistics , philosophy
Abstract The phenolic composition of white grapes is important since browning reactions may dramatically compromise the overall quality of musts and wines. Only few scientific contributions are available, which investigated how fertilization can influence this class of compounds. Thus, the aim of this work was to examine the effects of NPK soil fertilization coupled with soil or foliar applications of Mg, Fe, and Zn on the concentrations of K, Mg, Fe, and Zn of grape berries and leaf petioles of potted Rebula grapevines ( Vitis vinifera L.), also revealing the change of hydroxycinnamic acids in grape juice. The results obtained over the three‐year study (2009–2011) showed that NPK fertilization positively affected K and Zn concentrations of petioles and grape berries, and negatively Mg. In addition, K (synergistic) and Mg (antagonistic) had an influence on Zn uptake. Our findings suggest that the supply of NPK was profitable for a reduction of trans ‐caftaric acid in grape juice, while only few differences were observed with further application of nutrients.