Preliminary Investigation on the Relationship between Raman Spectra of Beef and Metmyoglobin and Metmyoglobin Reductase Activity

Table 2

PLS models for predicting MetMb and MRA values on the surface layer of fresh beef with raw and pretreated spectral data.

	Pretreatment	Number of latant number	Calibration		Crossvalidation		Prediction
			MetMb	Raw	6	0.827	1.169	0.804	0.985	0.885	1.387
SGS	5	0.856		0.815	0.832	0.693	0.916	0.983
MSC	6	0.837		0.911	0.815	0.741	0.908	1.157
Nor	5	0.846		0.894	0.797	0.733	0.911	0.9981
MAR	Raw	4	0.762	1.416	0.801	0.857	0.806	1.514
	SGS	5	0.801	1.325	0.853	1.215	0.845	1.502
	MSC	6	0.818	0.993	0.862	0.819	0.853	1.361
	Nor	6	0.836	0.869	0.887	0.786	0.871	0.908