Simultaneous Quantification of 14 Compounds in Achillea millefolium by GC-MS Analysis and Near-Infrared Spectroscopy Combined with Multivariate Techniques

Table 6

PCA of the 14 compounds and total explained variance.

Factor	Initial eigenvalues			Extraction sum of the loadings
	Total	% of explained variance	Cumulative % of explained variance	Total	% of explained variance	Cumulative % of explained variance
1	6.54	46.72	46.72	6.54	46.72	46.72
2	2.35	16.76	63.48	2.35	16.76	63.48
3	2.1	14.96	78.44	2.1	14.96	78.44
4	0.85	6.06	84.5	0	0	0
5	0.72	5.17	89.67	0	0	0
6	0.5	3.56	93.23	0	0	0
7	0.35	2.51	95.75	0	0	0
8	0.27	1.92	97.66	0	0	0
9	0.1	0.72	98.38	0	0	0
10	0.08	0.59	98.97	0	0	0
11	0.07	0.47	99.43	0	0	0
12	0.05	0.33	99.76	0	0	0
13	0.02	0.18	99.94	0	0	0
14	0.01	0.06	100.00	0	0	0