Aronia, as a berry fruit rich in nutrients, represents a suitable raw material for obtaining cold-pressed juices. The chemical composition of aronia indicates the presence of a large amount of polyphenolic compounds and anthocyanins, which contribute to its antioxidant and antimicrobial properties. This study describes the process of producing cold-pressed juice from organically grown aronia (Organic Control System certified), which is frozen immediately after pressing without pasteurization and the addition of additives. Physico-chemical analyses included determination of acidity, pH value, dry matter content, and pectin content. Based on the analysis results of antioxidant properties, which involved determination of total phenols, flavonoids, FRAP, DPPH, and ABTS tests, the study showed that cold-pressed aronia juice has high antioxidant properties. Considering that aronia juice is cold-pressed, aimed at reducing the effects of elevated temperatures on the quality of aronia juice, without the addition of additives, preservatives, colors, sweeteners, etc., it can be said that its good antioxidant properties originate from the raw material, i.e., aronia berries.
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