Document Detail


Determination of fat, protein, casein, total solids, and somatic cell count in goat's milk by near-infrared reflectance spectroscopy.
MedLine Citation:
PMID:  14509434     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Analysis using near-infrared reflectance spectroscopy (NIRS) was investigated as a means of predicting quality parameters of goat's milk. Calibration equations were developed with samples from individual goats of Malagueña and Murciano-Granadina dairy breeds at different stages of lactation to obtain a wide range of variation in milk composition. Prediction equations for milk fat, protein, casein, total solids, and somatic cell count (SCC) were developed with 2 sample presentations, liquid drawer (homogenized milk) and aluminium cup (unhomogenized milk), to measure absorbance values, and accuracy of measurements was compared. The multiple correlation coefficient (R) values for homogenized milk were 0.98, 0.96, 0.91, 0.94, and 0.79 and for unhomogenized milk were 0.98, 0.95, 0.92, 0.95, and 0.74 for fat, protein, casein, total solid, and SCC, respectively. To validate the calibrations, an independent set of samples was used. The best simple correlation coefficient (r) values were 0.97, 0.95, 0.91, 0.93, and 0.72 for homogenized milk and 0.97, 0.95, 0.92, 0.95, and 0.79 for unhomogenized milk. The study showed that NIRS is a useful technique for the prediction of fat, protein, casein, total solids, and SCC in unhomogenized goat's milk.
Authors:
Elena Albanell; Gerardo Caja; Xavier Such; Maristela Rovai; Ahmed A K Salama; Ramón Casals
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Journal of AOAC International     Volume:  86     ISSN:  1060-3271     ISO Abbreviation:  J AOAC Int     Publication Date:    2003 Jul-Aug
Date Detail:
Created Date:  2003-09-25     Completed Date:  2004-02-02     Revised Date:  2008-03-17    
Medline Journal Info:
Nlm Unique ID:  9215446     Medline TA:  J AOAC Int     Country:  United States    
Other Details:
Languages:  eng     Pagination:  746-52     Citation Subset:  IM    
Affiliation:
Universidad Autónoma de Barcelona, Agricultura y Producción Animal, Facultad de Veterinaria, 08193 Bellaterra, Barcelona, Spain. elena.albanell@uab.es
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MeSH Terms
Descriptor/Qualifier:
Animals
Calibration
Caseins / analysis
Cell Count*
Female
Goats*
Linear Models
Lipids / analysis*
Milk / chemistry*,  cytology
Milk Proteins / analysis*
Sensitivity and Specificity
Spectroscopy, Near-Infrared / methods*
Chemical
Reg. No./Substance:
0/Caseins; 0/Lipids; 0/Milk Proteins

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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