[Detection of fatty acid composition in intramuscular fat of packed pork loin by near infrared spectroscopy].
Guang Pu Xue Yu Guang Pu Fen Xi
; 29(8): 2079-82, 2009 Aug.
Article
em Zh
| MEDLINE
| ID: mdl-19839312
ABSTRACT
Near infrared spectroscopy as a new method was proposed for rapid and non-destructive measurement of fatty acid composition in intramuscular fat of packed pork loin. Gas chromatography was used as a reference method for the spectral analysis of fatty acid composition. The fiber optic in interactance mode was adopted to measure the spectra of packed pork loins by low density polythene. The original spectra were pretreated by smoothing and 2nd derivative, and then PLS calibration model was builtby using software of Unscrambler 9.6. A total of eighty two samples were used in the experiment. The samples were divided into calibration set and validation set after removing the outliers. The calibration set was used to set up calibration model and then the model was adopted to predict the samples of validation set. The results show that the correlation coefficient for C14 0, C15 1, C16 0, C16 1, C18 0, C18 1, C18 2, C18 3, C20 1, C20 4, SFA, MUFA, PUFA is 0.57, 0.76, 0.71, 0.77, 0.62, 0.81, 0.86, 0.91, 0.85, 0.91, 0.67, 0.81 and 0.95, respectively. It means that evaluating fatty acid using near infrared spectroscopy in interactance mode has higher precision. Near infrared spectroscopy technique is a feasible and rapid method for nondestructive detection of fatty acid composition in intramuscular fat of packed pork loin.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Espectroscopia de Luz Próxima ao Infravermelho
/
Ácidos Graxos
/
Carne
Tipo de estudo:
Diagnostic_studies
/
Prognostic_studies
Limite:
Animals
Idioma:
Zh
Revista:
Guang Pu Xue Yu Guang Pu Fen Xi
Ano de publicação:
2009
Tipo de documento:
Article