Moisture diffusion coefficients of single wheat kernels with assumed
simplified geometries: Analytical approach
S. Kang, и S. Delwiche. Transactions of the American Society of Agricultural Engineers, 43 (6):
1653--1659(2000)
Аннотация
Using a combination of soaking data and an analytical solution of
the diffusion equation, moisture diffusion coefficients of single
wheat kernels were determined for nine commercial varieties representing
Six market classes of U.S. wheat. Two geometric conditions, the whole
kernel as a prolate spheroid, and the endosperm (also modeled as
prolate spheroidal) and pericarp as separate components, were examined.
Values from the analytical solution for a sphere were adjusted by
a geometrical correction factor to more closely represent the response
of a prolate spheroid. The ranges in diffusion coefficients were
0.39 � 10-10 to 1.04 � 10-10 m2/s for endosperm and 0.04 � 10-10
to 0.28 � 10-10 m2/s for pericarp. Compared to the pericarp, moisture
diffused more rapidly in the endosperm. Soft wheats tended to have
a more permeable pericarp layer than hard wheats, which resulted
in a greater overall rate of diffusion, despite the endosperm of
these two groups being nearly equivalent in diffusion coefficient
value.
%0 Journal Article
%1 Kang2000
%A Kang, S.
%A Delwiche, S.R.
%C USDA/ARS, Instrumentation and Sensing Lab., BARC-East, 10300 Baltimore
Avenue, Beltsville, MD 20705-2350, United States
%D 2000
%J Transactions of the American Society of Agricultural Engineers
%K Diffusion, Moisture, Tempering, Wheat
%N 6
%P 1653--1659
%T Moisture diffusion coefficients of single wheat kernels with assumed
simplified geometries: Analytical approach
%U http://www.scopus.com/scopus/inward/record.url?eid=2-s2.0-0034470282&partnerID=40&rel=R8.2.0
%V 43
%X Using a combination of soaking data and an analytical solution of
the diffusion equation, moisture diffusion coefficients of single
wheat kernels were determined for nine commercial varieties representing
Six market classes of U.S. wheat. Two geometric conditions, the whole
kernel as a prolate spheroid, and the endosperm (also modeled as
prolate spheroidal) and pericarp as separate components, were examined.
Values from the analytical solution for a sphere were adjusted by
a geometrical correction factor to more closely represent the response
of a prolate spheroid. The ranges in diffusion coefficients were
0.39 � 10-10 to 1.04 � 10-10 m2/s for endosperm and 0.04 � 10-10
to 0.28 � 10-10 m2/s for pericarp. Compared to the pericarp, moisture
diffused more rapidly in the endosperm. Soft wheats tended to have
a more permeable pericarp layer than hard wheats, which resulted
in a greater overall rate of diffusion, despite the endosperm of
these two groups being nearly equivalent in diffusion coefficient
value.
@article{Kang2000,
abstract = {Using a combination of soaking data and an analytical solution of
the diffusion equation, moisture diffusion coefficients of single
wheat kernels were determined for nine commercial varieties representing
Six market classes of U.S. wheat. Two geometric conditions, the whole
kernel as a prolate spheroid, and the endosperm (also modeled as
prolate spheroidal) and pericarp as separate components, were examined.
Values from the analytical solution for a sphere were adjusted by
a geometrical correction factor to more closely represent the response
of a prolate spheroid. The ranges in diffusion coefficients were
0.39 � 10-10 to 1.04 � 10-10 m2/s for endosperm and 0.04 � 10-10
to 0.28 � 10-10 m2/s for pericarp. Compared to the pericarp, moisture
diffused more rapidly in the endosperm. Soft wheats tended to have
a more permeable pericarp layer than hard wheats, which resulted
in a greater overall rate of diffusion, despite the endosperm of
these two groups being nearly equivalent in diffusion coefficient
value.},
added-at = {2012-12-19T21:37:51.000+0100},
address = {USDA/ARS, Instrumentation and Sensing Lab., BARC-East, 10300 Baltimore
Avenue, Beltsville, MD 20705-2350, United States},
author = {Kang, S. and Delwiche, S.R.},
biburl = {https://www.bibsonomy.org/bibtex/2c4ea8b388f7b839d30917c4e545e06b4/gruwel},
comment = {Cited By (since 1996): 9
Export Date: 25 September 2008
Source: Scopus},
interhash = {10f040fb8c3f15f74ce5cce06b135b5c},
intrahash = {c4ea8b388f7b839d30917c4e545e06b4},
journal = {Transactions of the American Society of Agricultural Engineers},
keywords = {Diffusion, Moisture, Tempering, Wheat},
number = 6,
owner = {administrator},
pages = {1653--1659},
timestamp = {2012-12-19T21:37:57.000+0100},
title = {Moisture diffusion coefficients of single wheat kernels with assumed
simplified geometries: Analytical approach},
url = {http://www.scopus.com/scopus/inward/record.url?eid=2-s2.0-0034470282&partnerID=40&rel=R8.2.0},
volume = 43,
year = 2000
}