Document Detail


Application of handheld and portable infrared spectrometers in bovine milk analysis.
MedLine Citation:
PMID:  23339381     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
A simple and fast method for detection and quantification of milk adulteration was developed using portable and handheld infrared (IR) spectrometers. Milk samples were purchased from local supermarkets (Columbus, OH, USA) and spiked with tap water, whey, hydrogen peroxide, synthetic urine, urea and synthetic milk in different concentrations. Spectral data were collected using mid-infrared (MIR) and near-infrared (NIR) spectrometers. Soft Independent Modeling of Class Analogy (SIMCA) classification models exhibited tight and well-separated clusters allowing the discrimination of control from adulterated milk samples. Partial least squares regression (PLSR) was used to estimate adulteration levels and results showed high coefficients of determination (R2) and low standard error of prediction (SEP). Classification and quantification models indicated that the tested MIR systems were superior to NIR systems in monitoring milk adulteration. This method can be potentially used as an alternative to the traditional methods due the simplicity, sensitivity, low energy cost and portability.
Authors:
P M Santos; E R Pereira-Filho; L E Rodriguez-Saona
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-22
Journal Detail:
Title:  Journal of agricultural and food chemistry     Volume:  -     ISSN:  1520-5118     ISO Abbreviation:  J. Agric. Food Chem.     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-23     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0374755     Medline TA:  J Agric Food Chem     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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