A Comparison of Reflectance and Transmittance Near-Infrared Spectroscopic Techniques in Determining Drug Content in Intact Tablets

2001 ◽  
Vol 6 (1) ◽  
pp. 19-29 ◽  
Author(s):  
Shilpa S. Thosar ◽  
Reba A. Forbess ◽  
Nkere K. Ebube ◽  
Yixin Chen ◽  
Ronald L. Rubinovitz ◽  
...  
Keyword(s):  
Near Infrared ◽  
Spectroscopic Techniques ◽  
Drug Content ◽  
Infrared Spectroscopic

Near-infrared and Mid-infrared Spectroscopic Techniques for a Fast and Nondestructive Quality Control of Thymi herba

Planta Medica ◽  
2017 ◽  
Vol 84 (06/07) ◽  
pp. 420-427 ◽  
Author(s):  
Cornelia Pezzei ◽  
Stefan Schönbichler ◽  
Shah Hussain ◽  
Christian Kirchler ◽  
Verena Huck-Pezzei ◽  
...  
Keyword(s):  
Antioxidant Capacity ◽  
Rosmarinic Acid ◽  
Near Infrared ◽  
Coefficient Of Determination ◽  
Attenuated Total Reflectance ◽  
Spectroscopic Techniques ◽  
Test Set ◽  
Mid Infrared ◽  
Capacity Coefficient ◽  
Infrared Spectroscopic

AbstractIn this study, novel near-infrared and attenuated total reflectance mid-infrared spectroscopic methods coupled with multivariate data analysis were established enabling the determination of thymol, rosmarinic acid, and the antioxidant capacity of Thymi herba. A new high-performance liquid chromatography method and UV-Vis spectroscopy were applied as reference methods. Partial least squares regressions were carried out as cross and test set validations. To reduce systematic errors, different data pretreatments, such as multiplicative scatter correction, 1st derivative, or 2nd derivative, were applied on the spectra. The performances of the two infrared spectroscopic techniques were evaluated and compared. In general, attenuated total reflectance mid-infrared spectroscopy demonstrated a slightly better predictive power (thymol: coefficient of determination = 0.93, factors = 3, ratio of performance to deviation = 3.94; rosmarinic acid: coefficient of determination = 0.91, factors = 3, ratio of performance to deviation = 3.35, antioxidant capacity: coefficient of determination = 0.87, factors = 2, ratio of performance to deviation = 2.80; test set validation) than near-infrared spectroscopy (thymol: coefficient of determination = 0.90, factors = 6, ratio of performance to deviation = 3.10; rosmarinic acid: coefficient of determination = 0.92, factors = 6, ratio of performance to deviation = 3.61, antioxidant capacity: coefficient of determination = 0.91, factors = 6, ratio of performance to deviation = 3.42; test set validation). The capability of infrared vibrational spectroscopy as a quick and simple analytical tool to replace conventional time and chemical consuming analyses for the quality control of T. herba could be demonstrated.

scholarly journals Accuracy and biases in predicting the chemical and physical traits of many types of cheeses using different visible and near-infrared spectroscopic techniques and spectrum intervals

2019 ◽  
Vol 102 (11) ◽  
pp. 9622-9638 ◽  
Author(s):  
Giorgia Stocco ◽  
Claudio Cipolat-Gotet ◽  
Alessandro Ferragina ◽  
Paolo Berzaghi ◽  
Giovanni Bittante
Keyword(s):  
Near Infrared ◽  
Spectroscopic Techniques ◽  
Infrared Spectroscopic ◽  
Physical Traits

Evaluation of the selectivity of white rot isolates using near infrared spectroscopic techniques

2007 ◽  
Vol 41 (6-7) ◽  
pp. 881-887 ◽  
Author(s):  
Karin Fackler ◽  
Marieke Schmutzer ◽  
Leka Manoch ◽  
Manfred Schwanninger ◽  
Barbara Hinterstoisser ◽  
...  
Keyword(s):  
Near Infrared ◽  
White Rot ◽  
Spectroscopic Techniques ◽  
Infrared Spectroscopic

On-line monitoring of oxy- and deoxy-hemoglobin using near-infrared spectroscopic techniques

2001 ◽  
Author(s):  
Gargi Vishnoi ◽  
Re-Gine Choe ◽  
N. Ramanujam ◽  
Martha E. Rode ◽  
Britton Chance
Keyword(s):  
Near Infrared ◽  
Spectroscopic Techniques ◽  
Infrared Spectroscopic ◽  
On Line

A Near-Infrared Spectroscopic Study of 60 Micron Peakers

1999 ◽  
Vol 118 (5) ◽  
pp. 2038-2054 ◽  
Author(s):  
Charlene A. Heisler ◽  
Michael M. De Robertis
Keyword(s):  
Spectroscopic Study ◽  
Near Infrared ◽  
Infrared Spectroscopic Study ◽  
Infrared Spectroscopic
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