Table 3.

Prediction of FA groups and IV in pork by NIRS. SFA: saturated fatty acids; MUFA: mono-saturated fatty acids; PUFA: polyunsaturated fatty acids; IV: iodine value.

Spectral Range	Sample Presentation	SFA		MUFA		PUFA		IV		Test Set Samples	Data Prep. Method	MVA Method	Ref.
(nm)		R2cv	SEP	R2cv	SEP	R2cv	SEP	R2cv	SEP
1100–2000	Loin (I)	0.81	1.76	0.94	1.29	0.74	1.25	-	-	No test set	MSC, DT, SNV	MPLSR	[56]
1100–2000	Sub. Fat (I)	0.96	1.10	0.98	1.50	0.95	0.60	-	-	No test set	MSC, DT, SNV	MPLSR	[58]
1100–2500	Sub. Fat (H)	0.92	0.82	0.89	1.12	0.90	0.52	-	-	No test set	MSC, SNV, DT, 1D, 2D	MPLSR	[61]
900–2500	Sub. Fat (H)	0.81	1.70	0.94	1.20	0.73	1.60	-	-	Test set	EMSC, 1D, 2D	PLSR	[62]
400–2500	Sub. Fat (H)	0.95	0.49	0.94	0.65	-	-	0.97	1.22	Test set	MSC, SNV, DT	MPLSR	[65]
400–2500	Sub. Fat (I)	0.86	1.37	0.82	1.23	0.86	1.08	0.87	1.80	No test set	MSC, SNV, DT, 1D, 2D	PLSR	[67]
	Sub. Fat (I)	0.79	1.38	0.77	1.20	0.82	0.85	0.82	1.67	Test set	SMO, DT	iPLSR	[60]
1042–2380	Sub. Fat (H)	0.98	0.90	0.88	1.60	0.96	4.70	0.98	0.80	Test set	1D, NOR, MSC	PLSR	[68]
	Sub. Fat (I)	-	-	-	-	-	-	0.83	1.44	Test set	EMSC	iPLSR	[59]
2500–20,000	Sub. Fat (H)	0.99	0.35	0.99	0.43	0.99	0.4	0.99	0.66	No test set	MSC, 1D, NOR	PLSR	[70]
Mean		0.90	1.10	0.91	1.14	0.87	1.38	0.91	1.27
STD		0.08	0.45	0.07	0.335	0.09	1.24	0.07	0.39