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Tschida A, Stadlbauer V, Schwarzinger B, Maier M, Pitsch J, Stübl F, Müller U, Lanzerstorfer P, Himmelsbach M, Wruss J, Klanert G, Schurr J, Wurm L, Rosner F, Höglinger O, Winkler S, Weghuber J. Nutrients, bioactive compounds, and minerals in the juices of 16 varieties of apple (Malus domestica) harvested in Austria: A four-year study investigating putative correlations with weather conditions during ripening. Food Chem 2020; 338:128065. [PMID: 33091997 DOI: 10.1016/j.foodchem.2020.128065] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 08/24/2020] [Accepted: 09/08/2020] [Indexed: 11/28/2022]
Abstract
This study was conducted to examine putative correlations between weather parameters during April-September and the amounts of nutrients, minerals and bioactive compounds in the juices of 16 apple varieties from four harvest years in Lower Austria. For most sugar-parameters, negative correlations were found with the total precipitation (r between -0.42 and -0.64). Conversely, positive correlations were observed with the mean air temperature (r between 0.32 and 0.66), the global radiation (r between 0.32 and 0.61) and the number of tropical days (r between 0.39 and 0.51). The sum of 14 polyphenols (HPLC quantitation) was positively correlated with the mean air temperature and global radiation (rs 0.44 and 0.42). Negative correlations were observed between the global radiation and potassium, magnesium and calcium contents (correlation coefficients -0.49, -0.68 and -0.69). We conclude that increased temperatures and global radiation can be correlated with enhanced sugar synthesis and polyphenol formation.
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Affiliation(s)
- Aurelia Tschida
- FFoQSI Austrian Competence Center for Feed and Food Quality, Safety and Innovation, Stelzhamerstrasse 23, 4600 Wels, Austria; University of Applied Sciences Upper Austria, Stelzhamerstrasse 23, 4600 Wels, Austria
| | - Verena Stadlbauer
- FFoQSI Austrian Competence Center for Feed and Food Quality, Safety and Innovation, Stelzhamerstrasse 23, 4600 Wels, Austria; University of Applied Sciences Upper Austria, Stelzhamerstrasse 23, 4600 Wels, Austria.
| | - Bettina Schwarzinger
- FFoQSI Austrian Competence Center for Feed and Food Quality, Safety and Innovation, Stelzhamerstrasse 23, 4600 Wels, Austria; University of Applied Sciences Upper Austria, Stelzhamerstrasse 23, 4600 Wels, Austria
| | - Martin Maier
- FFoQSI Austrian Competence Center for Feed and Food Quality, Safety and Innovation, Stelzhamerstrasse 23, 4600 Wels, Austria; University of Applied Sciences Upper Austria, Stelzhamerstrasse 23, 4600 Wels, Austria
| | - Johannes Pitsch
- FFoQSI Austrian Competence Center for Feed and Food Quality, Safety and Innovation, Stelzhamerstrasse 23, 4600 Wels, Austria; University of Applied Sciences Upper Austria, Stelzhamerstrasse 23, 4600 Wels, Austria
| | - Flora Stübl
- Johannes Kepler University Linz, Altenbergerstraße 69, 4040 Linz, Austria
| | - Ulrike Müller
- University of Applied Sciences Upper Austria, Stelzhamerstrasse 23, 4600 Wels, Austria
| | - Peter Lanzerstorfer
- University of Applied Sciences Upper Austria, Stelzhamerstrasse 23, 4600 Wels, Austria
| | - Markus Himmelsbach
- Johannes Kepler University Linz, Altenbergerstraße 69, 4040 Linz, Austria
| | - Jürgen Wruss
- University of Applied Sciences Upper Austria, Stelzhamerstrasse 23, 4600 Wels, Austria
| | - Gerald Klanert
- FFoQSI Austrian Competence Center for Feed and Food Quality, Safety and Innovation, Stelzhamerstrasse 23, 4600 Wels, Austria; University of Applied Sciences Upper Austria, Stelzhamerstrasse 23, 4600 Wels, Austria
| | - Jonas Schurr
- University of Applied Sciences Upper Austria, Softwarepark 32, 4232, Hagenberg, Austria
| | - Lothar Wurm
- Höhere Bundeslehranstalt und Bundesamt für Wein- und Obstbau Klosterneuburg, Wiener Straße 74, 3400 Klosterneuburg, Austria
| | - Franz Rosner
- Höhere Bundeslehranstalt und Bundesamt für Wein- und Obstbau Klosterneuburg, Wiener Straße 74, 3400 Klosterneuburg, Austria
| | - Otmar Höglinger
- University of Applied Sciences Upper Austria, Stelzhamerstrasse 23, 4600 Wels, Austria
| | - Stephan Winkler
- University of Applied Sciences Upper Austria, Softwarepark 32, 4232, Hagenberg, Austria
| | - Julian Weghuber
- FFoQSI Austrian Competence Center for Feed and Food Quality, Safety and Innovation, Stelzhamerstrasse 23, 4600 Wels, Austria; University of Applied Sciences Upper Austria, Stelzhamerstrasse 23, 4600 Wels, Austria.
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