Varietal effect on the moisture adsorption isotherm of yellow-fleshed cassava root starches
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Date
2014-06-27
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IITA
Abstract
The Moisture Adsorption Isotherm of three Yellow-fleshed Cassava Root Starches (YfCRS) wereo o odetermined by the static gravimetric method at temperatures of 27 C, 37 C and 42 C and wateractivities level of between 0.10 and 0.80. Data obtained were fitted to four sorption models (Peleg,2GAB, Oswin and Langmuir). The model fit was evaluated using the coefficient of determination (R ),root mean square error (RMSE) and mean percentage deviation (%E). The results showed that Peleg2model gave the best fit for predicting the moisture adsorption data of the starches (R =0.99,RMSE=0.00, %E=0.00). TMS 06/1630 YfCRS had the highest monolayer moisture (M ) while that ofoTMS 01/1368 had the lowest. The high รข-carotene content of TMS 01/1368 YfCRS could beresponsible for its low M (r = -0.96), irrespective of the storage temperatures. However, all the YfCRSomight be stored for longer periods at all the temperatures since their M fall within acceptable limit forostorage stability.
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71. Awoyale, W., Sanni, L.O., Shittu, T.A., Adegunwa, M.O., Gueye, B and Kulakow, P. (2014): Varietal effect on the Moisture Adsorption Isotherm of Yellow-fleshed Cassava Root Starches. African Journal of Root and Tuber Crops, 11(1): 41- 49. https://hdl.handle.net/10568/77818