POST-HARVEST STORAGE AND SPOILAGE OF CASSAVA TUBERS (MANIHOT SPP) IN IKOT EKPENE, AKWA IBOM STATE, NIGERIA
Udoudoh, P. J.
Journal Title:Journal of Environmental Issues and Agriculture in Developing Countries
Cassava (Manihot spp.) tubers form a major food source of carbohydrates and other food nutrients for tropical dwellers. The tubers also are sources of industrial products such as dextrins, glues, ethyl alcohol, acetone and glucose etc. Post - harvest losses on storage of cassava root tubers are large because of their poor storage qualities. In this study, wholesome cassava tubers were washed and disinfected for used to study the storage and spoilage of cassava tubers using moist saw dust in sealed boxes and some exposed as control. Profuse microbial growths occurred on the surface of tubers exposed on the 4th day and were completely soften due to fermentation of the tissues on the 7th day. Bacteria isolated from the tubers were species of Staphylococcus, Bacillus and Diplococcus. Fungal species isolated using cultural characteristics were Candida and Aspergillus. Tubers on moist sawdust had no microbial growth but developed secondary roots on the 3rd day of storage. They could be stored up to 3 weeks. The sawdust acted as soil for the tubers while the different gases and heat evolved by the tubers in the sealed boxes had a curing effect on the tubers. The study hence recommends that storage of cassava tubers in moist saw-dust would provide effective preservative method against post-harvest losses.