Type

Journal Article

Authors

Paul Allen
Joseph P Kerry
Gerard Downey
Colm P. O'Donnell
Ming Zhao
Yingqun Nian

Subjects

Chemistry

Topics
raman spectroscopy raman spectra fat content discriminant analysis chemical assessment quality assessment beef quality holstein friesian

Assessment of physico-chemical traits related to eating quality of young dairy bull beef at different ageing times using Raman spectroscopy and chemometrics. (2017)

Abstract Raman spectroscopy and chemometrics were investigated for the prediction of eating quality related physico-chemical traits of Holstein-Friesian bull beef. Raman spectra were collected on the 3rd, 7th and 14th days post-mortem. A frequency range of 1300-2800cm(-1) was used for partial least squares (PLS) modelling. PLS regression (PLSR) models for the prediction of WBSF and cook loss achieved an R(2)CV of 0.75 with RMSECV of 6.82 N and an R(2)CV of 0.77 with RMSECV of 0.97%w/w respectively. For the prediction of intramuscular fat, moisture and crude protein content, R(2)CV values were 0.85, 0.91 and 0.70 with RMSECV of 0.52%w/w, 0.39%w/w and 0.38%w/w respectively. An R(2)CV of 0.79 was achieved for the prediction of both total collagen and hydroxyproline content, while for collagen solubility the R(2)CV was 0.88. All samples (100%) from 15- and 19-month old bulls were correctly classified using PLS discriminant analysis (PLS-DA), while 86.7% of samples from different muscles (longissimus thoracis, semitendinosus and gluteus medius) were correctly classified. In general, PLSR models using Raman spectra on the 3rd day post-mortem had better prediction performance than those on the 7th and 14th days. Raman spectroscopy and chemometrics have potential to assess several beef physical and chemical quality traits.
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Full list of authors on original publication

Paul Allen, Joseph P Kerry, Gerard Downey, Colm P. O'Donnell, Ming Zhao, Yingqun Nian

Experts in our system

1
Paul Allen
Teagasc
Total Publications: 85
 
2
J P Kerry
University College Cork
Total Publications: 130
 
3
Gerard Downey
Teagasc
Total Publications: 70
 
4
Colm P O'Donnell
Teagasc
Total Publications: 68
 
5
Ming Zhao
Teagasc
Total Publications: 7
 
6
Yingqun Nian
Teagasc
Total Publications: 7