Abstract
Moisture adsorption of long-grain rice was modeled using the finite element method. The rough rice kernel was considered a prolate spheroid comprised of three homogeneous components: endosperm, bran, and hull. Adsorption tests were conducted on white, brown, and rough rice of the Newbonnet and Lemont varieties at temperatures ranging from 12 C to 50 C. Diffusivity values were determined for each rice component and each rice form (i.e., rough, brown, and white rice) using a finite element program with an optimization subroutine. White rice had the highest adsorption rate and rough rice the lowest. Endosperm had considerably higher diffusivity values than the bran and hull. The diffusivities of Lemont rice components were found to be more temperature-dependent than those of Newbonnet. The diffusivity temperature-dependency for each rice component and form was described by an Arrhenius-type function.
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Claims 4
Claim · model-written summary
White rice had the highest adsorption rate and rough rice the lowest.
- Taxon
- rice
Oryza sativae0 - Outcome
- adsorption ratee0
- Direction
- higheste0
- Comparator
- rough ricee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“White rice had the highest adsorption rate and rough rice the lowest”
Claim · model-written summary
Endosperm diffusivity was higher than that of bran and hull.
- Taxon
- RiceOryza sativat0
- Organ / stage
- Endosperme0
- Outcome
- diffusivity valuese0
- Direction
- highere0
- Comparator
- bran and hulle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Endosperm had considerably higher diffusivity values than the bran and hull”
t0“Rice”
Claim · model-written summary
Lemont component diffusivity was more temperature dependent than Newbonnet diffusivity.
- Taxon
- riceOryza sativae0
- Material
- Lemonte0
- Outcome
- diffusivitiese0
- Direction
- more temperature-dependente0
- Comparator
- Newbonnete0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The diffusivities of Lemont rice components were found to be more temperature-dependent than those of Newbonnet”
Claim · model-written summary
An Arrhenius-type function described temperature dependence of diffusivity for each rice form and component.
- Taxon
- riceOryza sativae0
- Outcome
- diffusivity temperature-dependencye0
- Comparator
- Arrhenius-type functione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The diffusivity temperature-dependency for each rice component and form was described by an Arrhenius-type function”