Orange-fleshed Sweet Potato Chips: Processing Effect on Carotenoid Content and Resistant Starch and Sensory Acceptance

HIGHLIGHTS

• Chips from orange-fleshed sweet potato have a good acceptability.

• Drying process showed retention of carotenoids total content.

• Chips from drying or frying process showed high resistant starch content.

Abstract

There is currently a great demand for industrialized products with functional properties, together with the increase in consumption of roots and sweet potato products. Sweet potatoes have a high content of resistant starch, while only the orange-fleshed roots also have a high content of carotenoids. Due to these, this work aimed to produce orange-fleshed sweet potato chips, by two processes: drying oven and immersion frying. The chips were evaluated for the content of resistant starch and carotenoids in nature and chips sweet potatoes, and evaluations of the physical attributes and sensory analysis of the chips. The drying process retained a greater content of total carotenoids. Fried chips can be considered high resistant starch content, even with a decrease in the content after this processing; they also showed more intense coloring and pleasant texture. There was a statistical difference between the varieties only regarding the content of carotenoids and resistant starch. Thereby, it can be concluded that the chips of both processing have good technological and functional qualities, and that the frying process presented best hardness which led to greater acceptability and purchase intention.

Keywords:
Beauregard; Clone 1365; color; roasted; fries