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Article

Effect of Sunlight Exposure on Anthocyanin and Non-Anthocyanin Phenolic Levels in Pomegranate Juices by High Resolution Mass Spectrometry Approach

1
Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Via Archirafi 32, 90123 Palermo, Italy
2
Institute for Agricultural and Forest Systems in the Mediterranean, National Council of Research, Via Empedocle, 58, 95128 Catania, Italy
3
CREA Research Centre for Cereal and Industrial Crops, 95024 Acireale (Catania), Italy
*
Authors to whom correspondence should be addressed.
Foods 2020, 9(9), 1161; https://doi.org/10.3390/foods9091161
Received: 22 July 2020 / Revised: 12 August 2020 / Accepted: 20 August 2020 / Published: 23 August 2020
Quali-quantitative analyses of anthocyanins and non-anthocyanin phenolic compounds performed with the use of liquid chromatography coupled with high resolution mass spectrometry, were evaluated in juice of pomegranate fruits (‘Dente di Cavallo’), in relation to different light exposures (North, South, West and East). A total of 16 compounds were identified, including phenolic acids, flavonoids, hydrolysable tannins, and anthocyanins, known for their health-promoting effects. Striking differences were observed about the total phenolic content, which was high in juices from fruits with east- and north-facing position, while it was lower in juices facing south. The greatest contents of total flavonoids and anthocyanins were recorded in fruit juices with southern exposure; however, there are no great differences in the content in phenolic acids. Tannins were mainly synthesized in fruit juices with West exposure. The results showed that the position within the tree had no significant effects on color juice, however, it significantly (p < 0.05) affected data on fruit weight, soluble sugars and juice yield. Remarkable synergies existed among polyphenols and phytochemicals in pomegranate juice, but collecting fruits with different solar exposure could enhance different health benefits, i.e., the juices with higher polyphenols content could have more anticancer effect or those with higher tannins content could have more antimicrobial effect. View Full-Text
Keywords: Punica granatum; polyphenols; hydrolysable tannins; flavonoids; Ultra High Performance Liquid Chromatography-Orbitrap-Mass Spectrometry Punica granatum; polyphenols; hydrolysable tannins; flavonoids; Ultra High Performance Liquid Chromatography-Orbitrap-Mass Spectrometry
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MDPI and ACS Style

Di Stefano, V.; Scandurra, S.; Pagliaro, A.; Di Martino, V.; Melilli, M.G. Effect of Sunlight Exposure on Anthocyanin and Non-Anthocyanin Phenolic Levels in Pomegranate Juices by High Resolution Mass Spectrometry Approach. Foods 2020, 9, 1161. https://doi.org/10.3390/foods9091161

AMA Style

Di Stefano V, Scandurra S, Pagliaro A, Di Martino V, Melilli MG. Effect of Sunlight Exposure on Anthocyanin and Non-Anthocyanin Phenolic Levels in Pomegranate Juices by High Resolution Mass Spectrometry Approach. Foods. 2020; 9(9):1161. https://doi.org/10.3390/foods9091161

Chicago/Turabian Style

Di Stefano, Vita, Salvatore Scandurra, Antonella Pagliaro, Vincenzo Di Martino, and Maria G. Melilli 2020. "Effect of Sunlight Exposure on Anthocyanin and Non-Anthocyanin Phenolic Levels in Pomegranate Juices by High Resolution Mass Spectrometry Approach" Foods 9, no. 9: 1161. https://doi.org/10.3390/foods9091161

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