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Enrichment of snack foods with plant ingredients has become very popular. Corn extrudates with fresh kale leaves are an example of a healthy snack food. During the study, these snacks were produced by extrusion-cooking and contained from 5 % to 20 % of fresh kale leaves in their recipe. For the obtained extrudates, the following parameters were determined: extrusion efficiency, specific mechanical energy requirement, bulk density, specific density, water absorption index, water solubility index, radial expansion ratio, cutting force, as well as the color coordinates on the CIE-Lab scale. It was observed that the addition of fresh kale leaves led to a significant decrease in processing efficiency as well as the expansion ratio, water solubility index and brightness of supplemented snacks. Increased density, cutting force and greenness of snacks was observed with increasing amounts of kale in the recipe.

The Influence of Fresh Kale Addition on Selected Properties of Corn Snacks