Prediction efficiency by near-infrared spectroscopy of immunoglobulin G in liquid and dried bovine colostrum samples

Simple item page
datacite.alternateIdentifier.citationJOURNAL OF DAIRY RESEARCH,Vol.83,345-351,2016
datacite.alternateIdentifier.doi10.1017/S0022029916000364
datacite.creatorJordana Rivero, M.
datacite.creatorAlomar, Daniel
datacite.creatorValderrama, Ximena
datacite.creatorLe Cozler, Yannick
datacite.creatorVelásquez Briceno, Alejandro
datacite.creatorHaines, Deborah
datacite.date2016
datacite.subject.englishDESIR
datacite.subject.englishNIRS
datacite.subject.englishBovine colostrum
datacite.subject.englishImmunoglobulin G
datacite.titlePrediction efficiency by near-infrared spectroscopy of immunoglobulin G in liquid and dried bovine colostrum samples
dc.date.accessioned2021-04-30T17:04:10Z
dc.date.available2021-04-30T17:04:10Z
dc.description.abstractThe objective of this study was to compare the prediction efficiency of IgG concentration in bovine colostrum by NIRS, using liquid and dried (Dry-Extract Spectroscopy for Infrared Reflectance, DESIR) samples by transflectance and reflectance modes, respectively. Colostrum samples (157), obtained from 2 commercial Holstein dairy farms, were collected within the first hour after calving and kept at -20 degrees C until analysis. After thawing and homogenisation, a subsample of 500 mg of liquid colostrum was placed in an aluminium mirror transflectance cell (01 mm path length), in duplicate, to collect the spectrum. A glass fiber filter disc was infused with another subsample of 500 mg of colostrum, in duplicate, and dried in a forced-air oven at 60 degrees C for 20 min. The samples were placed in cells for dry samples to collect the spectra. The spectra in the VIS-NIR region (400-2500 nm) were obtained with a NIRSystems 6500 monochromator. Mathematical treatments, scatter correction treatments and number of cross-validation groups were tested to obtain prediction equations for both techniques. Reference analysis for IgG content was performed by radial immunodiffusion. The DESIR technique showed a higher variation in the spectral regions associated with water absorption bands, compared with liquid samples. The best equation for transflectance method (liquid samples) obtained a higher coefficient of determination for calibration (095 vs. 094, respectively) and cross validation (094 vs. 091, respectively), and a lower error of cross validation (903 vs. 115, respectively) than the best equation for reflectance method (DESIR samples). In final, both methods showed excellent capacity for quantitative analysis, with residual predictive deviations above 3. It is concluded that, regarding accuracy of prediction and time for obtaining results of IgG from bovine colostrum, NIRS analysis of liquid samples (transflectance) is recommended over dried samples (DESIR technique by reflectance).
dc.identifier.urihttp://repositoriodigital.uct.cl/handle/10925/3860
dc.language.isoen
dc.publisherCAMBRIDGE UNIV PRESS
dc.sourceJOURNAL OF DAIRY RESEARCH
oaire.resourceTypeArticle
uct.catalogadorWOS
uct.indizacionSCI
Files
Collections
Migración Web of Science