African Journal of Biotechnology Vol. 5 (16), pp. 1505-1507, 17 August 2006   

ISSN 1684–5315 © 2006 Academic Journals        

Short Communication

Effect of gamma irradiation on moisture sorption isotherms of cowpeas

Ashaye O. A.

Institute of Agricultural Research and Training, Obafemi Awolowo University, P.M.B 5029, Ibadan, Nigeria. E-mail: kayodeashaye@yahoo.com

Accepted 2 June, 2006

The effect of gamma irradiation on moisture sorption isotherms of cowpeas was investigated The non-irradiated and irradiated cowpeas exhibited the typical three stage sigmoidal curve found in most foods. There was also a concomitant increase in the equilibrium moisture content (EMC) as relative humidity increased for non- and irradiated cowpeas. Drum cowpea (15 Gy) had the highest rate of water absorption. Generally, the amount of water absorbed by irradiated cowpeas is generally higher than non-irradiated cowpeas.

Key words: Cowpea, irradiation, moisture, sorption.