Strategies for Constructing the Calibration Set in the Determination of Active Principles in Pharmaceuticals by Near Infrared Diffuse Reflectance Spectrometry

The Analyst ◽  
1997 ◽  
Vol 122 (8) ◽  
pp. 761-765 ◽  
Author(s):  
M. Blanco ◽  
J. Coello ◽  
H. Iturriaga ◽  
S. Maspoch ◽  
C. de la Pezuela
Keyword(s):  
Diffuse Reflectance ◽  
Near Infrared ◽  
Reflectance Spectrometry ◽  
Diffuse Reflectance Spectrometry

Nondestructive NIR and NIT Determination of Protein, Fat, and Water in Plastic-Wrapped, Homogenized Meat

1992 ◽  
Vol 46 (11) ◽  
pp. 1685-1694 ◽  
Author(s):  
Tomas Isaksson ◽  
Charles E. Miller ◽  
Tormod Næs
Keyword(s):  
Diffuse Reflectance ◽  
Near Infrared ◽  
Multivariate Calibration ◽  
Principal Component Regression ◽  
Principal Component ◽  
Prediction Errors ◽  
Optimal Test ◽  
Meat Samples ◽  
Water Contents

In this work, the abilities of near-infrared diffuse reflectance (NIR) and transmittance (NIT) spectroscopy to noninvasively determine the protein, fat, and water contents of plastic-wrapped homogenized meat are evaluated. One hundred homogenized beef samples, ranging from 1 to 23% fat, wrapped in polyamide/polyethylene laminates, were used. Results of multivariate calibration and prediction for protein, fat, and water contents are presented. The optimal test set prediction errors (root mean square error of prediction, RMSEP), obtained with the use of the principal component regression method with NIR data, were 0.45, 0.29 and 0.50 weight % for protein, fat, and water, respectively, for plastic-wrapped meat (compared to 0.40, 0.28 and 0.45 wt % for unwrapped meat). The optimal prediction errors for the NIT method were 0.31, 0.52 and 0.42 wt % for protein, fat, and water, respectively, for plastic-wrapped meat samples (compared to 0.27, 0.38, and 0.37 wt % for unwrapped meat). We can conclude that the addition of the laminate only slightly reduced the abilities of the NIR and NIT method to predict protein, fat, and water contents in homogenized meat.

Near-infrared reflectance spectrometry in the determination of the physical state of primary materials in pharmaceutical production

The Analyst ◽  
1995 ◽  
Vol 120 (4) ◽  
pp. 1005 ◽  
Author(s):  
Elena Dreassi ◽  
Giuseppe Ceramelli ◽  
Piero Corti ◽  
Silvano Lonardi ◽  
Piero Luigi Perruccio
Keyword(s):  
Physical State ◽  
Near Infrared ◽  
Infrared Reflectance ◽  
Near Infrared Reflectance ◽  
Reflectance Spectrometry ◽  
Pharmaceutical Production ◽  
Primary Materials

The use of sediment colour measured by diffuse reflectance spectrometry to determine sediment sources: Application to the Attert River catchment (Luxembourg)

2010 ◽  
Vol 382 (1-4) ◽  
pp. 49-63 ◽  
Author(s):  
Núria Martínez-Carreras ◽  
Thomas Udelhoven ◽  
Andreas Krein ◽  
Francesc Gallart ◽  
Jean F. Iffly ◽  
...  
Keyword(s):  
Diffuse Reflectance ◽  
Sediment Sources ◽  
Reflectance Spectrometry ◽  
River Catchment ◽  
Diffuse Reflectance Spectrometry
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