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Application of a Handheld Infrared Sensor for Monitoring the Mineral Fortification in Whole Grain Cornmeal

Application of a Handheld Infrared Sensor for Monitoring the Mineral Fortification in Whole Grain... The requirements for labeling and safe control of dosage during the production of fortified products in complex matrices require reliable, precise, and accurate concentration analysis. On-line or real-time spectroscopic methods can provide a valuable window into in-process food manufacturing to permit optimization of production rate and ensuring quality of food products. Our objective was to develop a real-time methodology for monitoring fortification of whole grain cornmeal throughout the industrial mixing process using a handheld infrared (IR) sensor. Whole grain cornmeal was fortified with a blend premix, containing zinc, iron, vitamin E, and calcium, at different levels (0.5–5.5%) and mixed for 30 min to ensure homogenous distribution of the fortificants. Real-time IR analysis was achieved by pressing an aliquot (0.1 g) onto an attenuated total reflectance diamond crystal of a portable handheld spectrometer and spectra were collected. Multivariate analysis was used to examine the data collected for monitoring distribution uniformity. The handheld regression (partial least squares regression) model based on specific IR spectral information (1,200–900 cm−1) associated to phosphate ion stretching vibration bands showed strong correlation (coefficient of correlation for validation >0.96) and similar performance statistics (standard error of cross-validation = 0.4%) as models generated from spectra collected by a benchtop system. Given the greater simplicity, speed, versatility, ruggedness, and portability of the handheld system over the laboratory benchtop instrument, it can provide the food industry with real-time sensor to evaluate the fortification of whole grain cornmeal snack foods, enabling timely correction measures during manufacture. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Food Analytical Methods Springer Journals

Application of a Handheld Infrared Sensor for Monitoring the Mineral Fortification in Whole Grain Cornmeal

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References (21)

Publisher
Springer Journals
Copyright
Copyright © 2011 by Springer Science+Business Media, LLC
Subject
Chemistry; Food Science; Analytical Chemistry; Chemistry/Food Science, general; Microbiology
ISSN
1936-9751
eISSN
1936-976X
DOI
10.1007/s12161-011-9272-7
Publisher site
See Article on Publisher Site

Abstract

The requirements for labeling and safe control of dosage during the production of fortified products in complex matrices require reliable, precise, and accurate concentration analysis. On-line or real-time spectroscopic methods can provide a valuable window into in-process food manufacturing to permit optimization of production rate and ensuring quality of food products. Our objective was to develop a real-time methodology for monitoring fortification of whole grain cornmeal throughout the industrial mixing process using a handheld infrared (IR) sensor. Whole grain cornmeal was fortified with a blend premix, containing zinc, iron, vitamin E, and calcium, at different levels (0.5–5.5%) and mixed for 30 min to ensure homogenous distribution of the fortificants. Real-time IR analysis was achieved by pressing an aliquot (0.1 g) onto an attenuated total reflectance diamond crystal of a portable handheld spectrometer and spectra were collected. Multivariate analysis was used to examine the data collected for monitoring distribution uniformity. The handheld regression (partial least squares regression) model based on specific IR spectral information (1,200–900 cm−1) associated to phosphate ion stretching vibration bands showed strong correlation (coefficient of correlation for validation >0.96) and similar performance statistics (standard error of cross-validation = 0.4%) as models generated from spectra collected by a benchtop system. Given the greater simplicity, speed, versatility, ruggedness, and portability of the handheld system over the laboratory benchtop instrument, it can provide the food industry with real-time sensor to evaluate the fortification of whole grain cornmeal snack foods, enabling timely correction measures during manufacture.

Journal

Food Analytical Methods – Springer Journals

Published: Aug 20, 2011

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