Application of near infrared reflectance spectroscopy to the compositional analysis of biscuits and biscuit doughs

1984 ◽  
Vol 35 (1) ◽  
pp. 99-105 ◽  
Author(s):  
Brian G. Osborne ◽  
Thomas Fearn ◽  
Andrew R. Miller ◽  
Stuart Douglas
Keyword(s):  
Near Infrared ◽  
Compositional Analysis ◽  
Reflectance Spectroscopy ◽  
Infrared Reflectance ◽  
Near Infrared Reflectance Spectroscopy ◽  
Near Infrared Reflectance ◽  
Infrared Reflectance Spectroscopy

Relation of the Acute Pulmonary Response to Cotton Dust and Dust Compositional Analysis by Near-Infrared Reflectance Spectroscopy. Part II: Unsieved Dust

1988 ◽  
Vol 42 (3) ◽  
pp. 433-442 ◽  
Author(s):  
Joseph G. Montalvo ◽  
Sherman E. Faught ◽  
Steven M. Buco
Keyword(s):  
Near Infrared ◽  
Compositional Analysis ◽  
Reflectance Spectroscopy ◽  
Infrared Reflectance ◽  
Cotton Dust ◽  
Near Infrared Reflectance Spectroscopy ◽  
Near Infrared Reflectance ◽  
Absorption Bands ◽  
Infrared Reflectance Spectroscopy ◽  
Pulmonary Response

The near-infrared reflectance spectroscopy (NIRS) method of analysis, as applied to cotton dust, offers an independent method for searching for byssinosis causatives. We report here a test of the hypothesis that the acute pulmonary response from subjects exposed to cotton dust is a linear function of the composition of unsieved dust as measured by near-infrared reflectance spectroscopy (NIRS). A linear relationship was found between delta FEV1 (the forced expiratory volume in 1 second) and unsieved cotton dust captured by the Hi-Vol dust sampler. Of the various agents proposed over the years as the byssinosis causative agent, at least three of them (gram-negative bacteria and their endotoxins, and tannins) were present in the unsieved dust at concentrations exceeding the NIRS sensitivity level and may account for the observed relationship. No association was found between the pulmonary effects and cotton compositional analysis by NIRS. NIR reflectance spectra of cotton and cotton dust, in air and in nonabsorbing carbon tetrachloride, reveal similar absorption bands of different intensity.

Application of Near Infrared Reflectance Spectroscopy to Compositional Analysis of Commercial Pig Feed Mixes

1987 ◽  
Vol 70 (3) ◽  
pp. 420-423
Author(s):  
Shih-Ling Y Chen ◽  
Ali Hsu ◽  
Mane-Lane Lee
Keyword(s):  
Near Infrared ◽  
Screening Method ◽  
Compositional Analysis ◽  
Correlation Coefficients ◽  
Reflectance Spectroscopy ◽  
Infrared Reflectance ◽  
Near Infrared Reflectance Spectroscopy ◽  
Near Infrared Reflectance ◽  
Infrared Reflectance Spectroscopy ◽  
Pig Feed

Abstract Official samples of commercial pig feed mixes taken for routine inspection were analyzed by near infrared reflectance spectroscopy (NIRS). Separate calibrations were established for pre-starting pig, starting pig, growing pig, finishing pig, and lactating sow feeds. Mean correlation coefficients and standard errors of calibration, respectively, obtained by comparing NIRS values with conventional chemical analysis values, were as follows: calibration set (about 35 samples per category)-moisture 0.87,0.44%; protein 0.90,0.75%; fiber 0.8b, 0.49%; analytical set (about 15 samples per category)—moisture 0.73, 0.42%; protein 0.90, 0.72%; fiber 0.83, 0.40%. Mean coefficients of variation for NIRS were moisture 3.9%, protein 4.2%, and fiber 14.8%; those for conventional analyses were moisture 2.7%, protein 1.1%, and fiber 11.7%. The results indicated that for moisture, protein, and fiber determinations in commercial pig feed mix products with various and unknown formulations, successful rapid NIRS analysis could be achieved by using a filter-type spectrometer and advanced mathematical data treatments. Among 246 samples inspected, protein content in 70% of them exceeded by 1-8% the legal minimum protein level. Application of NIRS provides an accurate and prompt on-line technique for feed mix analysis during the formulation process and can be beneficial to the operation of feed mills. For official inspection, the technique might serve as a preliminary screening method.

Relation of the Acute Pulmonary Response to Cotton Dust and Dust Compositional Analysis by Near-Infrared Reflectance Spectroscopy. Part I: Elutriated Dust

1987 ◽  
Vol 41 (4) ◽  
pp. 645-654 ◽  
Author(s):  
Joseph G. Montalvo ◽  
Sherman E. Faught ◽  
Steven M. Buco ◽  
Arnold M. Saxton
Keyword(s):  
Near Infrared ◽  
Compositional Analysis ◽  
Reflectance Spectroscopy ◽  
Forced Expiratory Volume ◽  
Infrared Reflectance ◽  
Cotton Dust ◽  
Near Infrared Reflectance Spectroscopy ◽  
Near Infrared Reflectance ◽  
Infrared Reflectance Spectroscopy ◽  
Pulmonary Response

The near-infrared reflectance spectroscopy (NIRS) method of analysis, as applied to cotton dust, offers an independent method for searching for byssinosis causatives. We wish to report here a test of the hypothesis that the acute pulmonary response from subjects exposed to cotton dust is a linear function of the composition of elutriated dust as measured by near-infrared reflectance spectroscopy (NIRS). Indeed, a linear relationship was found between delta FEV1 (the forced expiratory volume in one second) and cotton dust captured by the vertical elutriator cotton dust sampler. Of the various agents proposed over the years as the byssinosis causative agent, at least three of them (gram-negative bacteria and their endotoxin, and tannins) were present in the dust at concentrations exceeding the NIRS sensitivity level, and may account for the observed relationship.

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