Zobrazeno 1 - 10
of 143
pro vyhledávání: '"Hanns-Ludwig Schmidt"'
Publikováno v:
Journal of Agricultural and Food Chemistry. 63:1974-1981
Plant tissue water is the source of oxygen and hydrogen in organic biomatter. Recently, we demonstrated that the stable hydrogen isotope value (δ(2)H) of plant methoxyl groups is a very reliable and easily available archive for the δ(2)H value of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::91c5dc0b0a5746fa1b232cbab20d7183
https://doi.org/10.1021/jf505192p
https://doi.org/10.1021/jf505192p
Publikováno v:
Food Control. 48:143-150
Analyses of stable isotope ratios are officially accepted methods in food authenticity and origin determination. They are routinely practiced by empirical comparison of the unknown samples' δ values with those of authentic material. However, as the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::733ca49f9b6cf57e6e75b2f7dd8037bd
https://doi.org/10.1016/j.foodcont.2014.06.002
https://doi.org/10.1016/j.foodcont.2014.06.002
Autor:
Clayton R. Magill, Isabelle Billault, Ansgar Kahmen, Alex L. Sessions, Dirk Sachse, Francesca A. McInerney, Yoshito Chikaraishi, Sarah J. Feakins, Katherine H. Freeman, Gabriel J. Bowen, Marcel T J van der Meer, Julian P. Sachs, Todd E. Dawson, James W. C. White, Hanns Ludwig Schmidt, Richard J. Robins, Pratigya J. Polissar, Jason B. West
Publikováno v:
Annual Review of Earth and Planetary Sciences. 40:221-249
Hydrogen-isotopic abundances of lipid biomarkers are emerging as important proxies in the study of ancient environments and ecosystems. A decade ago, pioneering studies made use of new analytical methods and demonstrated that the hydrogen-isotopic co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9101731b8e3b03095603ed220eea44b7
https://doi.org/10.1146/annurev-earth-042711-105535
https://doi.org/10.1146/annurev-earth-042711-105535
Publikováno v:
Journal of Agricultural and Food Chemistry. 59:9475-9483
The δ(18)O value of the p-hydroxy group of L-tyrosine depends on the biosynthesis by plants or animals, respectively. In animal proteins it reflects the diet and is therefore an absolute indicator for illegal feeding with meat and bone meal. The aim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad2db2f13aebf03ae21b70919a3f2099
https://doi.org/10.1021/jf201217r
https://doi.org/10.1021/jf201217r
Autor:
Nicole Tanz, Hanns-Ludwig Schmidt
Publikováno v:
Journal of Agricultural and Food Chemistry. 58:3139-3146
The delta(34)S values of biological material, especially food commodities, serve as indicators for origin assignments. However, in the metabolism of higher plants sulfur isotope fractionations must be expected. As a matter of fact, the delta(34)S val
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f756f4bff899e378c77fee0e7cbb2ef1
https://doi.org/10.1021/jf903251k
https://doi.org/10.1021/jf903251k
Autor:
Wolfram Meier-Augenstein, Robert M. Kalin, John T. G. Hamilton, Simon Davis, Frank Keppler, David B. Harper, Hanns-Ludwig Schmidt, Nicola Farmer, David Brown
Publikováno v:
New Phytologist. 176:600-609
Stable isotope ratios of organic compounds are valuable tools for determining the geographical origin, identity, authenticity or history of samples from a vast range of sources such as sediments, plants and animals, including humans. Hydrogen isotope
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1aa428c6b23633754eb2109a08f6149d
https://doi.org/10.1111/j.1469-8137.2007.02213.x
https://doi.org/10.1111/j.1469-8137.2007.02213.x
Publikováno v:
Journal of Chemical Technology & Biotechnology. 58:183-190
A concept for the development of an automatic flow-injection analyzer with integrated dehydrogenase columns and its application in the control of industrial processes is presented. The system is based upon a kernel consisting of a nested-loop injecti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dfd48bdebf167c16e2e5382c110a0ee5
https://doi.org/10.1002/jctb.280580212
https://doi.org/10.1002/jctb.280580212
Publikováno v:
Isotopes in environmental and health studies. 51(1)
Many physical and chemical processes in living systems are accompanied by isotope fractionation on H, C, N, O and S. Although kinetic or thermodynamic isotope effects are always the basis, their in vivo manifestation is often modulated by secondary i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::61d06b0cfb5c1f6538572f1bb72cc52f
https://pubmed.ncbi.nlm.nih.gov/25894429
https://pubmed.ncbi.nlm.nih.gov/25894429
Autor:
Hanns-Ludwig Schmidt
Publikováno v:
Isotopes in environmental and health studies. 51(1)
When I was asked to contribute a summary of my scientific career to this special issue, I thought by myself whether it might be reasonable to write one's own eulogy or obituary. However, as I am st...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::639dd2cbe0fd4bfab1bb61da0387874b
https://pubmed.ncbi.nlm.nih.gov/25775216
https://pubmed.ncbi.nlm.nih.gov/25775216
Autor:
Andreas Rossmann, Nicole Tanz, Susanne Rummel, Hans-Joachim Kupka, Hans-Peter Sieper, Hanns-Ludwig Schmidt, Tony Williams
Publikováno v:
Rapid Communications in Mass Spectrometry. 20:2521-2527
The isotope ratio of each of the light elements preserves individual information on the origin and history of organic natural compounds. Therefore, a multi-element isotope ratio analysis is the most efficient means for the origin and authenticity ass
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::921729da02f5952ba3410ab9b2672392
https://doi.org/10.1002/rcm.2619
https://doi.org/10.1002/rcm.2619