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@ARTICLE{Menzel:55992,
author = {Menzel, M. I. and Oros-Peusquens, A.-M. and Pohlmeier, A.
and Shah, J. N. and Schurr, U. and Schneider, H. U.},
title = {{C}omparing 1{H}-{NMR} imaging and relaxation mapping of
{G}erman white asparagus from five different cultivation
sites},
journal = {Journal of plant nutrition and soil science},
volume = {170},
issn = {1436-8730},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {PreJuSER-55992},
pages = {24 - 38},
year = {2007},
note = {Record converted from VDB: 12.11.2012},
abstract = {Nuclear magnetic resonance imaging (MRI) and complementary
analytical techniques were used to address the question
whether white asparagus (Asparagus officinalis L.) from
different cultivation sites in Germany can be distinguished
on the basis of NMR relaxation times. Five locations with
contrasting soil properties and composition within the two
asparagus-cultivation regions Rhineland and Lower Franconia
were selected for this project. For the first time, entire
asparagus plants in their authentic soil environment
excavated directly from the original harvest site were
imaged by the NMR technique. However, they could not be
employed for determination of relaxation times of spears in
situ, because of artifacts arising from soil properties.
Instead, market-ready asparagus spears and freshly prepared
spear saps from the five locations were used to acquire MRI
data sets with different (slow and fast) imaging methods and
to compute spatially resolved distributions (maps) of T-1,
T-2, and T-2* relaxation times. Comparison of the data for
pith, vascular tissue, and peel of the spears yielded only
marginal, if any, differences in T-1, T-2, and T-2* between
the specimens from the five locations, which were not
sufficient for an unambiguous region-related distinction.
More pronounced differences in T-1, T-2, and T-2* were
visible for the spear saps, allowing a clear distinction
between individual specimens for each of the two cultivation
regions. The results are discussed in terms of an
application potential for correlated NMR relaxation times of
tissue saps for future geographic authentication of
agricultural produces.},
keywords = {J (WoSType)},
cin = {ICG-3 / ICG-4 / INB-3 / JARA-ENERGY},
ddc = {570},
cid = {I:(DE-Juel1)ICG-3-20090406 / I:(DE-Juel1)VDB793 /
I:(DE-Juel1)INB-3-20090406 / $I:(DE-82)080011_20140620$},
pnm = {Terrestrische Umwelt / Funktion und Dysfunktion des
Nervensystems},
pid = {G:(DE-Juel1)FUEK407 / G:(DE-Juel1)FUEK409},
shelfmark = {Agronomy / Plant Sciences / Soil Science},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000244915300004},
doi = {10.1002/jpln.200625114},
url = {https://juser.fz-juelich.de/record/55992},
}