Journal article
Near-Infrared Spectroscopy for Monitoring Starch Hydrolysis
Applied spectroscopy, Vol.54(2), pp.277-283
02/2000
DOI: 10.1366/0003702001949212
Abstract
Near-infrared (NIR) spectroscopy has been evaluated for monitoring the acid-catalyzed hydrolysis (thinning) of starch. In practice, the extent of starch hydrolysis is measured in fluidity units, which correspond to a physical property of the hydrolyzed starch material. NIR spectra of samples taken periodically during a series of starch-thinning reactions were used to predict fluidity. The standard error of prediction (SEP) was 1.06 mL with the use of partial least-squares (PLS) regression in conjunction with digital Fourier filtering. This SEP was significantly better than that reported before with a univariate calibration model based on the integrated area of the 4400 cm−1 (2272 nm) absorption band for carbohydrates. The improved SEP meets the industry demands for real-time monitoring. Although these calibration models were developed from samples prepared in the laboratory, no spectroscopic differences were apparent between spectra collected from these laboratory samples and spectra collected from samples taken directly from plant starch slurries during actual thinning reactions. This similarity in spectral features, and hence chemical matrix, supports the potential of NIR spectroscopy for on-line monitoring of industrial starch-thinning processes.
Details
- Title: Subtitle
- Near-Infrared Spectroscopy for Monitoring Starch Hydrolysis
- Creators
- Hoeil Chung - NIR Project Team, SK Corporation, 110 Nam-Gu, Kosa-Dong, Ulsan, Korea (H.C.); and Department of Chemistry, University of Iowa, Iowa City, Iowa 52242 (M.A.A.)Mark A Arnold - NIR Project Team, SK Corporation, 110 Nam-Gu, Kosa-Dong, Ulsan, Korea (H.C.); and Department of Chemistry, University of Iowa, Iowa City, Iowa 52242 (M.A.A.)
- Resource Type
- Journal article
- Publication Details
- Applied spectroscopy, Vol.54(2), pp.277-283
- Publisher
- SAGE Publications
- DOI
- 10.1366/0003702001949212
- ISSN
- 0003-7028
- eISSN
- 1943-3530
- Language
- English
- Date published
- 02/2000
- Academic Unit
- Fraternal Order of Eagles Diabetes Research Center; Center for Biocatalysis and Bioprocessing; Chemistry
- Record Identifier
- 9984216727402771
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