Infrared Spectroscopy / Ezine
Determination of simple sugars, malic acid and total phenolic compounds in apple pomace by IR spectroscopy and PLSR
Date: Mar 1, 2010
Author:
A fast, versatile, inexpensive and environmentally safe analytical method was developed to quantify simple sugars, malic acid and total phenolic compounds in apple pomace, considering its potential use as a raw material with value instead of as an industrial waste.
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Cosmic coronene's phantom spectral bands
Date: Feb 1, 2010
Author: David Bradley
Anomalies in the spectra of the aromatic planar molecule coronene can be explained with powerful calculations on infrared and Raman spectroscopic data. The evidence suggests that minute out-of-plane molecular distortions from D(6h) to C(2h) symmetry are the underlying cause.
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A noninvasive near IR system for detection of platelet components contaminated with bacteria
Date: Feb 1, 2010
Author:
This study describes near infrared spectroscopy to examine platelets inoculated with low concentrations of Bacillus cereus and Staphylococcus epidermidis, comparing with sterile bags.
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A highly sensitive near-IR fluorescent detection method to analyze signalling pathways by reverse-phase protein array
Date: Jan 4, 2010
Author:
An improved detection method was described for reverse-phase protein arrays combining near-infrared fluorescence with one or two rounds of tyramide-based signal amplification.
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The violin case
Date: Jan 1, 2010
Author: David Bradley
It won't necessarily be music to the classical purist's ear, but chemists have been instrumental in revealing the secret beneath the varnish on a Stradivari violins, and the secret is: there is no secret.
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Prediction of 13C and 15N in plant tissues with near-infrared reflectance spectroscopy
Date: Dec 2, 2009
Author:
The appropriateness of near-infrared reflectance spectroscopy for the estimation of stable isotope ratios for nitrogen and carbon of plant tissues has been demonstrated on seven bog species from Patagonia.
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Resonant approach to quantum problem
Date: Dec 1, 2009
Author: Steve Down
Microwave waveguides on a diamond-based chip can generate a magnetic field large enough to change the quantum state of an atomic-scale defect in less than one billionth of a second, emulating the process involved in magnetic resonance imaging and potentially leading to a new approach to quantum computing.
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Quick assessment of the thermal decomposition behavior of lignocellulosic biomass by near IR spectroscopy and its statistical analysis
Date: Nov 2, 2009
Author:
The application of near infrared spectroscopy for predicting the thermal decomposition behavior of lignocellulosic biomass (three types of woody biomass and three types of herbaceous biomass) was successfully performed along with statistical analysis.
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NIR and Raman quickly reveal heparin contamination
Date: Nov 1, 2009
Author: David Bradley
Near infrared (NIR) reflectance and laser Raman spectra can be used to quickly screen drug samples non-destructively and to spot contamination. The techniques could not displace nuclear magnetic resonance spectroscopy and electrophoresis required by drug regulators, but could be used as a quick first test for screening potentially contaminated drug products.
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Prediction of tablet properties based on near infrared spectra of raw mixed powders by chemometrics: Scale-up factor of blending and tableting processes
Date: Oct 5, 2009
Author:
A method of prediction of tablet properties based on near-IR spectra of raw mixed powders before compression was developed using chemometrical means, allowing for the effect of the difference in scale up using a pilot-scale mixing machine and a continuous tableting machine was studied.
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