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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.

Read More thumbnail image: Determination of simple sugars malic acid and total phenolic compounds in apple pomace by IR spectroscopy and PLSR

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.

Read More thumbnail image: Cosmic coronenes phantom spectral bands

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.

Read More thumbnail image: A noninvasive near IR system for detection of platelet components contaminated with bacteria

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.

Read More thumbnail image: A highly sensitive near-IR fluorescent detection method to analyze signalling pathways by reverse-phase protein array

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.

Read More thumbnail image: The violin case

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.

Read More thumbnail image: Prediction of 13C and 15N in plant tissues with near-infrared reflectance spectroscopy

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.

Read More thumbnail image: Resonant approach to quantum problem

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.

Read More thumbnail image: Quick assessment of the thermal decomposition behavior of lignocellulosic biomass by near IR spectroscopy and its statistical analysis

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.

Read More thumbnail image: NIR and Raman quickly reveal heparin contamination

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.

Read More thumbnail image: Prediction of tablet properties based on near infrared spectra of raw mixed powders by chemometrics Scale-up factor of blending and tableting processes
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