Evaluation of important fatty acid ratios in poultry feed lipids by ATR FTIR spectroscopy

Evaluation of important fatty acid ratios in poultry feed lipids by ATR FTIR spectroscopy

A rapid, simple and reproducible single bounce attenuated total reflectance (SB-ATR) Fourier transform infrared (FTIR) spectroscopic method was developed for determination of the n − 6, n − 3 and ratio of n − 6: n − 3 polyunsaturated fatty acids (PUFAs) in poultry feed lipids using partial least squ...

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Bibliographic Details
Published in:Vibrational spectroscopy Vol. 57; no. 2; pp. 177 - 181
Main Authors: Mahesar, S.A., Sherazi, S.T.H., Kandhro, A.A., Bhanger, M.I., Khaskheli, A.R., Talpur, M.Y.
Format: Journal Article
Language:English
Published: Elsevier B.V 01-11-2011
Subjects:
Derivatives
Fatty acids
FTIR spectroscopy
Lipids
n − 3
n − 6 fatty acids
n − 6: n − 3 ratio
Partial least squares
Poultry
Poultry feed lipid
Reflectance
Regression
Spectra
Spectroscopy
Poultry feed lipid
PRD
RMSEP
PUFA
MS
MUFA
PRESS
n − 6 fatty acids
SFA
n − 3
FTIR spectroscopy
RMSEC
RMSECV
n − 6: n − 3 ratio
FTIR
PLS
PF
SB-ATR
GC
Partial least squares
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Summary:A rapid, simple and reproducible single bounce attenuated total reflectance (SB-ATR) Fourier transform infrared (FTIR) spectroscopic method was developed for determination of the n − 6, n − 3 and ratio of n − 6: n − 3 polyunsaturated fatty acids (PUFAs) in poultry feed lipids using partial least squares (PLS) regression. Data for n − 6, n − 3 and ratio of n − 6: n − 3 was acquired by gas chromatography (GC) and used as a standard values for FTIR calibration. The best regression results were achieved using first derivatives of the 1475–650 cm −1 spectral region for n − 6, n − 3 and ratio of n − 6: n − 3 with high regression coefficients ( R 2) of 0.999, 0.994 and 0.998, respectively and low RMSEP values of 1, 0.06 and 0.83, respectively. The results of the present study revealed that FTIR could be used for rapid and accurate determination of n − 6, n − 3 and ratio of n − 6: n − 3 PUFAs present in poultry feed lipids.
Bibliography:ObjectType-Article-2
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content type line 23
ISSN:0924-2031
1873-3697
DOI:10.1016/j.vibspec.2011.06.009