Changes in functional properties and in vitro bioaccessibilities of ß-carotene and lutein after extrusion processing

In this research, carrot pulp was added to traditional snack made from corn-grit. As the biological activity of carotenoids in the body depends on their bioaccessibility, change in carotenoid bioaccessibility during extrusion processing was investigated. In addition, phenolic content, antioxidant activity, ß-carotene and lutein contents were investigated before and after the extrusion process. Two different temperature profiles were used for extrusion process. In-vitro bioaccessibilities of ß-carotene and lutein increased by extrusion, ß-carotene at both temperature profiles while lutein only at higher temperature profile. Extrusion decreased the antioxidant activity, total phenolic, ß-carotene and lutein contents. Results suggest that even though amount of functional components decrease, in vitro bioaccessibility could be enhanced by extrusion. Therefore, carrot pulp can successfully be added as a functional ingredient to extrudated. © 2017, Association of Food Scientists & Technologists (India).110 O 792Acknowledgements This work was supported by The Scientific and Technological Research Council of Turkey (TUBITAK 110 O 792). -