Application of vegetable concentrates and powders in coloured pasta production

Vegetable concentrates and powders can be used in the process of pasta production as natural colouring components. The aim of the work was to investigate the effect of the addition of different vegetable components (powders and concentrates) on the colour, chemical composition, cooking and sensory quality of pasta. Tagliatelle was made from durum semolina substituted with 0%, 2%, 4%, 6% and 8% of beet powder (BP), beet concentrate (BC), carrot powder (CP), carrot concentrate (CC) and kale powder (KP). The addition of concentrates caused a greater change in the colour of the pasta (Delta E: 12.45-48.01) than the analogous addition of the powders (Delta E: 6.24-45.31); however, the colour of the products was unstable and less resistant to cooking. The incorporation of the vegetable powders induced a greater increase in the content of ash and total dietary fibre in the pasta than the addition of the concentrates.