Biodynamic and conventional apples of the cultivar ‘Golden Delicious’ were characterized based on the investigation of polyphenol content and volatile composition. Polyphenols were determined by high-performance liquid chromatography with diode-array detection and mass spectrometry HPLC/DAD/MS analysis; volatile organic compounds (VOCs) were detected with a proton transfer-time of flight-mass spectrometer (PTR-ToF-MS) approach. Colour and physiochemical fruit parameters were also acquired to compare fruit ripeness. By the analysis of the entire data set, it emerges that polyphenols can separate samples both on geographic and agricultural management basis, according to PCA analysis. On the contrary, PCA on volatile compounds is unable to separate the samples. Results suggest that, in apple fruits, polyphenols content is highly influenced by external factors, while volatile profile is under a stronger genetic control, thus more stable across different environments.
European Food Research and Technology – Springer Journals
Published: Mar 10, 2017
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