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ORIGINAL PAPER
Calibration models for evaluation of acetic acid and dry matter contents in compound substrates of agricultural origin
1
Uniwersytet Przyrodniczy w Poznaniu, Instytut Inżynierii Biosystemów, ul. Wojska Polskiego 28, 60-637 Poznań, Poland
Journal of Research and Applications in Agricultural Engineering 2016;61(3):7-11
KEYWORDS
ABSTRACT
The paper presents the results of modeling an acetic acid and dry matter content carried out by the method of transforming spectral spectra VIS-NIR using software, Unscrambler X 10.1. To build the models reference data obtained applying the Nordman’s method as well as dryer-weight one were used. In respect of of the proposed chemometric method the measuring range between 400 nm and 2170 nm was tested using a reflective method of obtaining spectral spectra. The studies indicated that the prepared calibration models of acetic acid and dry matter content in the fermenting mixture of corn silage and manure obtain the best fit factor (R2) for the measuring range of 950 nm to 2170 nm. The best ratio of fit (R2) for the model of dry matter content was 0.86, and for acetic acid content 0.68.
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| eISSN: | 2719-423X |
| ISSN: | 1642-686X |
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