Effect of Press Construction on Yield and Quality of Apple Juice

Kamil Wilczyński,Zbigniew Kobus,Dariusz Dziki

doi:10.3390/su11133630

Kamil Wilczyński, Zbigniew Kobus + Show 1 more

Open Access

https://doi.org/10.3390/su11133630

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Journal: Sustainability	Publication Date: Jul 2, 2019
Citations: 19	License type: CC BY 4.0

Affiliation: University of Life Sciences in Lublin

Abstract

The paper presents the possibility of applying different press constructions for juice extraction in small farms. The research was carried out with three different varieties of apples, namely, Rubin, Mutsu, and Jonaprince. Two types of presses were tested: a basket press and a screw press. Generally, application of the screw press makes it possible to obtain a higher yield of extraction compared to the basket press. In our study, the differences in the pressing yield among press machines also depended on the apple variety used. The juices obtained on the screw press were found to be of a higher quality characterized by a higher content of soluble solids, higher viscosity, higher total content of polyphenols, higher antioxidant activity, and lower acidity. Thus, the selection of an appropriate press is the key to producing high-quality apple juice with health-promoting properties for manufacturers of apple juice at the local marketplace.

Highlights

Apples (Malus domestica) are the most commonly used fruit for juice extraction in the European Union (EU)
The present research demonstrated the varied efficiency of extraction of apple juice depending on the design of the press and apple variety
The differences in the yield of extracted juice observed between the presses were related to the wider opening of cell membranes and release of greater amounts of nutrients facilitated by the screw press

Summary

Introduction

Apples (Malus domestica) are the most commonly used fruit for juice extraction in the European Union (EU). They are a rich source of nutrients and polyphenols and possess antioxidant properties that have beneficial effects on human health [1,2]. The yield of apples is estimated to be 12.59 million tons per year in Europe and 3.6 million tons in Poland [3]. Poland is the largest producer and exporter of concentrated juices extracted from fruits grown in the temperate zone of the EU [4]. The European share of the juice yield was estimated to account for 66% in 2016

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