Composition and Physicochemical Properties of Pomace of Various Cultivars of Blackberry (Rubus fruticosus L.)

The objective of this study is to assess the proximate chemical composition, and the physical and techno-functional properties of blackberry pomace from different cultivars (‘Polar’, ‘Orkan’, ‘Brzezina’). Blackberry pomace primarily comprises seeds and other parts, such as pulps/skins. It serves as a rich source of bioactive compounds, particularly anthocyanins, and demonstrates notable functional properties, including water holding capacity, oil holding capacity, swelling capacity, and various fiber fractions. Moreover, anthocyanin-rich fruits are interesting due to their health-promoting properties and intensive color. Total anthocyanin content (TAC) ranged from 113.82 mg 100 g−1 d.w. to 129.58 mg 100 g−1 d.w. in blackberry pomace. Fiber fractions, including ADF, NDF, lignin, and WSCs, exhibited significant variations among the different blackberry pomace cultivars as well as color.