Publications des agents du Cirad


On-farm evaluation of the impact of drying and storage on the carotenoid content of orange-fleshed sweet potato (Ipomea batata Lam.)

Bechoff A., Tomlins K.I., Dhuique-Mayer C., Dove R., Westby A.. 2011. International Journal of Food Science and Technology, 46 (1) : p. 52-60.

DOI: 10.1111/j.1365-2621.2010.02450.x

Drying of orange-fleshed sweet potato was evaluated under African rural conditions. Three locally built dryers (open-air sun, tunnel and shade) were tested using Resisto and MGCL01 varieties in Mozambique. Total carotenoid losses were low in all dryers being 9.2% on average. After drying, sweet potato chips were stored in a traditional way (jute bags inside a mud house). Chip size (thin, thick chip or slice) had a significant effect on drying (P < 0.05) but not on storage and variety had an effect on both. Total carotenoid losses during storage were much higher being 83.7% on average, after 4 months, with main individual carotenoids fitting a first-order kinetics degradation. Globally, carotenoid losses on-farm or on-research station were of similar level.

Mots-clés : ipomoea batatas; patate douce; séchage; composition chimique; perte au cours du traitement; caroténoïde; stockage; séchoir; mozambique; chips

Documents associés

Article (a-revue à facteur d'impact)

Agents Cirad, auteurs de cette publication :