The contribution of lipophilic, hydrophilic and dietary fibre fractions to total antioxidant activity of tomato waste

Abstract

© M. & H. Schaper GmbH & Co. ISSN 0003-925X In this study waste of five tomato genotypes was used to prepare lipophilic, hydrophilic and dietary fibre fractions. Depending on the tomato genotype, waste contained different quantities of insoluble dietary fibre (23.67-36.20 g/100 g DW) and soluble dietary fibre (0.07-7.39 g/100 g DW). Total antioxidant activity of tomato waste, presented as Trolox equivalent antioxidant capacity (TEAC), ranged from 1143.58 µmol TEAC/100 g DW for the Rutgers waste to 1822.83 µmol TEAC/100 g DW for the Knjaz waste. Our results showed that tomato waste is a rich source of bioactive compounds and may be used as a functional food ingredient.