Moisture-sorption isotherms of Bambara nut and Tiger nut Online publication date: Wed, 18-Feb-2015
by Ogbonnaya Chukwu, Emmanuel Sunday Akin Ajisegiri
International Journal of Postharvest Technology and Innovation (IJPTI), Vol. 2, No. 2, 2011
Abstract: Moisture sorption characteristics of Bambara nut [Voandzeia subcerranea (L.) thouars] and Tiger nut (Cyperus esculentus L.) were investigated at 34°C and 0.10-0.98 water activity. Both the adsorption and desorption modes for the nuts followed the Brunauer-Emmet-Teller (BET) Type 2 model. Five moisture sorption models, namely Bradley, Smith, Henderson, BET and GAB (Guggerhein-Anderson-de Boer) were tested for their predictive capability on the data. The coefficients of determination varied from 0.7825-0.9949. The Henderson and Bradley models gave the closest moisture content estimates to the experimental data under the adsorptive and desorptive modes. The monolayer moisture contents were calculated using both the GAB and BET models, providing useful data for assessing the storage stability of the nuts.
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Postharvest Technology and Innovation (IJPTI):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email subs@inderscience.com