Water diffusion coefficients of selected cereals and legumes grown in Ghana as affected by temperature and variety

Simple item page
dc.contributor.authorAntwi, Godfred Isaac
dc.date.accessioned2012-06-19T12:49:17Z
dc.date.accessioned2023-04-20T00:33:33Z
dc.date.available2012-06-19T12:49:17Z
dc.date.available2023-04-20T00:33:33Z
dc.date.issued2011-06-19
dc.descriptionA thesis submitted to the Department of Agricultural Engineering, Kwame Nkrumah University of Science and Technology in partial fulfilment for the requirements for the degree of Master of Science in Food and Postharvest Engineeringen_US
dc.description.abstractThe kinetics of water absorption by six newly released maize (Abrohemaa, Omankwa, Abotem,Abeleehi, Dorke SR and Akposoe), two cowpea (Tonaand Nhyira) and two soybeans (NagbaarandAnidaso) hybrids of cereals and legumes grown in Ghana were studied by a gravimetric method during soaking at four temperatures of 30, 40, 50 and 60ºC to determine their moisture diffusivity. The results showed that the absorption kinetics followed Fick's law of diffusion during the first hours of soaking and the water absorption patterns were dependent on temperature and variety. The estimated values for water diffusion coefficients varied from 2.54 x 10-10 to 4.89 x 10-10 m2/s, 4.36 x 10-10 to 6.28 x 10-10 m2/s and from 2.90 x 10-10 to 6.75 x 10-10m2/s for maize, cowpea and soybean varieties respectively. An Arrhenius-type equation described the strong temperature effect on the diffusion coefficient with activation energies ranging from 7.04 to 9.09 kJ/mol for maize 7.73 to 8.56 kJ/mol for cowpea and 5.51 to 8.14 kJ/mol for soybeansen_US
dc.description.sponsorshipKNUSTen_US
dc.identifier.urihttps://ir.knust.edu.gh/handle/123456789/4051
dc.language.isoenen_US
dc.subjectMaizeen_US
dc.subjectSoybeanen_US
dc.subjectCowpea Arrhenius–type equationen_US
dc.subjectDiffusion coefficienten_US
dc.subjectModellingen_US
dc.subjectWater Absorptionen_US
dc.titleWater diffusion coefficients of selected cereals and legumes grown in Ghana as affected by temperature and varietyen_US
dc.typeThesisen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
ANTWI Godfred Isaac.pdf
Size:
1.25 MB
Format:
Adobe Portable Document Format
Description:
Full Thesis
Download
License bundle
Now showing 1 - 2 of 2
Thumbnail Image
Name:
license.txt
Size:
1.73 KB
Format:
Item-specific license agreed to upon submission
Description:
Download
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed to upon submission
Description:
Download
Collections
College of Agriculture & Natural Resources