Assessment of tenderness of aged bovine gluteus medius muscles using Raman spectroscopy

作者：Bauer Alexandra; Scheier Rico; Eberle Thomas; Schmidt Heinar^*

来源：Meat Science, 2016, 115: 27-33.

DOI：10.1016/j.meatsci.2015.12.020

• Meat quality
• Shear force
• Handheld Raman device
• Non-invasive

A portable 671 nm Raman system was evaluated as a rapid and non-destructive device for the assessment of beef tenderness using 175 gluteus medius muscles (99 for calibration, 76 for validation) aged at -1 degrees C and 7 degrees C for fourteen days. Raman and shear force (SF) measurements were performed with the aged beef. The samples stored at -1 degrees C showed on average only slightly increased SF values. The correlation of Raman spectra with SF using partial least squares regression yielded cross-validated predictions of SF for both storage temperatures with coefficients of determination R-cv(2) = 0.33-0.79. Validation with independent samples resulted in predictions with R-val(2) = 0.33. Using thresholds between 30 and 49 N, tough and tender samples could be discriminated with partial least squares discriminant analysis with 70-88% and 59-80% accuracy during cross-validation and validation, respectively. These results demonstrate the principle feasibility to predict the SF and thus toughness of raw, aged gluteus beef cuts with a portable Raman device showing potential for grading beef cuts.

• 出版日期2016-5