A direct 13C nuclear magnetic resonance (NMR) method can differentiate between sucrose-based sugar products produced from sugar beet (C3 plant) and sugar cane (C4 plant), providing an alternative to isotope ratio MS.
Journal Highlight: 1H NMR based metabolic profiling in Crohn's disease by random forest methodology
Journal Highlight: 1H NMR based metabolic profiling in Crohn's disease by random forest methodology
http://www.spectroscopynow.com/common/images/thumbnails/146ed5b84e7.jpg1H NMR spectroscopy of the serum metabolites of patients with Crohn's disease, supported by random forest methodology, showed that valine and isoleucine are differentiating metabolites for diagnosis.
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nmrlearner
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06-30-2014 11:39 PM
Journal Highlight: Quantitative 2D liquid-state NMR
Journal Highlight: Quantitative 2D liquid-state NMR
http://www.spectroscopynow.com/common/images/thumbnails/1465cafc4c8.jpgThis review aims at presenting recent efforts to reach a high trueness and precision in quantitative measurements of liquids by 2D NMR.
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nmrlearner
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06-02-2014 10:02 PM
Journal Highlight: 1H and 13C NMR-based sugar profiling with chemometric analysis and antioxidant activity of herbhoneys and honeys
Journal Highlight: 1H and 13C NMR-based sugar profiling with chemometric analysis and antioxidant activity of herbhoneys and honeys
http://www.spectroscopynow.com/common/images/thumbnails/1447e6dff3b.jpg1H and 13C NMR spectroscopy coupled with chemometric analysis (PCA and PLS-DA) and antioxidant assays were used to study 25 samples of Polish herbhoneys and honeys.
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nmrlearner
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03-03-2014 04:55 PM
Journal Highlight: Investigation of the chemomarkers correlated with flower colour in different organs of Catharanthus roseus using NMR-based metabolomics
Journal Highlight: Investigation of the chemomarkers correlated with flower colour in different organs of Catharanthus roseus using NMR-based metabolomics
http://www.spectroscopynow.com/common/images/thumbnails/14358e552d8.jpgThe metabolic profile of leaves, stems, roots and flowers of Catharanthus roseus and the possible correlation with four flower colours (orange, pink, purple and red) was studied by 1H-NMR spectroscopy.
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nmrlearner
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01-06-2014 08:50 PM
Journal Highlight: Quantitative NMR: An applicable method for quantitative analysis of medicinal plant extracts and herbal products
Journal Highlight: Quantitative NMR: An applicable method for quantitative analysis of medicinal plant extracts and herbal products
http://www.spectroscopynow.com/common/images/thumbnails/13abcca009b.jpgA quantitative NMR method has been reported for quantitative analysis of three medicinal plant extracts and their herbal products without the need of authentic standards.
Source: Spectroscopynow.com
nmrlearner
General
0
02-03-2013 08:49 AM
[NMR software blog] Natural Products
Natural Products
http://1.bp.blogspot.com/_ROkYShLRKqA/SteNWieFqCI/AAAAAAAAARk/qKuAY5zIiGo/s400/antiphase.png
A reader asked me: "What is the shape of a 2-D peak?" and my answer was: "Exponential! (in time domain)". This is all you need to know, I think. The picture should help, as always. If you are reading this blog, it means that you have something like a computer. Even the iPhone is a computer (you can run programs on it) and can display my blog. I suspect, however, that you have a better computer, like I do.
You can use your computer to run simulations and more: you can ask it to...