Analysis of Quality Differences in Radix Dipsaci before and after Processing with Salt Based on Quantitative Control of HPLC Multi-Indicator Components Combined with Chemometrics

Table 8

Principal component eigenvalue and contribution rate.

Principal component	λ	Contribution rate (%)	Cumulative contribution rate (%)
1	4.324	43.237	43.237
2	1.512	15.122	58.359
3	1.395	13.950	72.310
4	0.946	9.456	81.766
5	0.718	7.177	88.943
6	0.529	5.291	94.234
7	0.257	2.566	96.800
8	0.166	1.661	98.461
9	0.122	1.219	99.681
10	0.032	0.319	100.000