Volume 42, Issue 4 e13034
ORIGINAL ARTICLE

Enzyme inactivation and evaluation of physicochemical properties, sugar and phenolic profile changes in cloudy apple juices after high pressure processing, and subsequent refrigerated storage

Krystian Marszałek

Corresponding Author

Krystian Marszałek

Department of Fruit and Vegetable Product Technology, Prof. Wacław Dąbrowski Institute of Agricultural and Food Biotechnology, Warsaw, Poland

Correspondence

Krystian Marszałek, Department of Fruit and Vegetable Product Technology, Prof. Wacław Dąbrowski Institute of Agricultural and Food Biotechnology, 36 Rakowiecka St., 02532 Warsaw, Poland.

Email: [email protected]

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Justyna Szczepańska

Justyna Szczepańska

Department of Fruit and Vegetable Product Technology, Prof. Wacław Dąbrowski Institute of Agricultural and Food Biotechnology, Warsaw, Poland

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Szymon Starzonek

Szymon Starzonek

Labolatory of Ceramics and Glass, Institute of High Pressure Physics of the Polish Academy of Sciences, Warsaw, Poland

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Łukasz Woźniak

Łukasz Woźniak

Department of Fruit and Vegetable Product Technology, Prof. Wacław Dąbrowski Institute of Agricultural and Food Biotechnology, Warsaw, Poland

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Urszula Trych

Urszula Trych

Department of Fruit and Vegetable Product Technology, Prof. Wacław Dąbrowski Institute of Agricultural and Food Biotechnology, Warsaw, Poland

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Sylwia Skąpska

Sylwia Skąpska

Department of Fruit and Vegetable Product Technology, Prof. Wacław Dąbrowski Institute of Agricultural and Food Biotechnology, Warsaw, Poland

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Sylwester Rzoska

Sylwester Rzoska

Labolatory of Ceramics and Glass, Institute of High Pressure Physics of the Polish Academy of Sciences, Warsaw, Poland

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Jorge A. Saraiva

Jorge A. Saraiva

Department of Chemistry, QOPNA, University of Aveiro, Aveiro, Portugal

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Jose M. Lorenzo

Jose M. Lorenzo

Department of Food Science and Technology, Centro Tecnológico de la Carne de Galicia, rúa Galicia n° 4, Parque Tecnológico de Galicia, Ourense, Spain

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Francisco J. Barba

Francisco J. Barba

Nutrition and Food Science Area, Preventive Medicine and Public Health, Food Science, Toxicology and Forensic Medicine Department, Faculty of Pharmacy, Universitat de València, València, Spain

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First published: 12 March 2019
Citations: 28

Funding information: Narodowe Centrum Nauki, Grant/Award Number: 2015/17/D/NZ9/02079 ; National Science Centre, Poland, Grant/Award Number: 2015/17/D/NZ9/02079

Abstract

The effect of high pressure processing (HPP) (200–600 MPa/5–45°C/1–15 min) on the enzyme activity and some quality parameters of cloudy apple juice during subsequent storage (4°C for 12 weeks) was investigated. Statistical analysis showed that pressure, temperature, and time had a significant effect (p < 0.05) on tissue enzyme activity, decreasing the activity of polyphenol oxidases (PPO) and peroxidases (POD). No significant changes in physicochemical parameters (pH, total soluble solids, sugars, and vitamin C) were observed after HPP treatments. The main polyphenols detected in apple juice were dichydrochalcones, being phloridzin the predominant (48.8 mg/L), and flavanols, with the highest concentration of (−) epicatechin (20.6 mg/L) followed by (+) catechin (6.4 mg/L) and procyanidin B1 (1.9 mg/L). Moreover, the application of HPP treatment significantly decreased gallic acid, all flavanols and dichydrochalcones. The storage time significantly affected total polyphenol content (TPC) and selected phenolic compounds, but the most stable were TPC.

Practical applications

This study demonstrated that nutritional quality of cloudy not produced from concentrate apple juice after high pressure processing (HPP) and during subsequent cold storage. HPP significantly influenced on tissue oxidoreductive enzymes decreasing their residual activity below 1 and 33%, respectively, for polyphenol oxidases and peroxidases. The results showed that HPP might be a useful method for preservation apple products, resulting higher color stability due to the inhibition of enzymatic reactions during storage time.

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