Table 1 The results of the compounds content analysis and overview of the experimental and predicted values of PLS model.

From: A strategy for qualitative and quantitative profiling of glycyrrhiza extract and discovery of potential markers by fingerprint-activity relationship modeling

Sample (mg/g)	LQA	LQT	LQG	GLA	ISS	ISG	P_6C%	Var. ASAE (mM)	Pred. ASAE (mM)	RE^c (%)
S1^a	8.470	10.034	1.621	78.446	4.040	2.263	84.204	0.2178	0.2148	−1.37
S2^a	8.097	9.754	1.574	73.001	3.723	2.100	79.435	0.2110	0.2030	−3.78
S3^b	8.714	9.659	1.726	77.484	3.712	2.433	84.002	0.2247	0.2078	−7.54
S4^a	9.657	10.926	1.875	82.536	3.700	2.305	87.990	0.2335	0.2293	−1.82
S5^a	9.624	10.892	1.884	80.195	3.584	2.308	86.982	0.2197	0.2203	0.31
S6^d	8.085	13.722	3.670	60.747	4.427	3.790	111.528	0.1365
S7^b	9.296	12.003	2.053	85.557	4.054	2.418	93.451	0.2120	0.2170	2.36
S8^a	9.817	11.781	1.904	83.763	4.112	2.170	90.903	0.2232	0.2228	−0.16
S9^a	8.080	8.412	1.951	79.059	3.521	2.755	84.559	0.1594	0.1881	18.01
S10^a	8.972	11.401	2.041	76.784	4.394	2.727	93.992	0.1984	0.1923	−3.07
S11^a	21.731	10.675	2.114	93.908	3.251	2.609	103.750	0.2793	0.2789	−0.16
S12^a	24.364	11.781	2.068	95.158	3.589	2.285	107.459	0.2809	0.2804	−0.17
S13^b	22.511	10.878	2.319	93.076	3.346	2.689	107.034	0.2504	0.2859	14.21
S14^a	24.314	12.040	1.847	88.789	3.457	1.846	101.505	0.2804	0.2809	0.17
S15^a	20.247	11.478	2.276	95.474	3.485	2.196	103.197	0.2458	0.2591	5.44
S16^a	20.908	10.021	2.361	88.114	3.561	3.171	107.585	0.2489	0.2530	1.64
S17^b	18.255	9.232	2.019	85.626	3.545	2.464	96.126	0.2148	0.2577	20.00
S18^d	13.703	11.014	5.181	77.198	4.409	4.573	131.753	0.2046
S19^b	14.741	11.101	2.485	82.361	4.174	3.134	105.205	0.1753	0.2238	27.62
S20^a	20.158	8.646	1.506	79.109	3.216	1.828	86.665	0.2494	0.2329	−6.62
S21^a	19.043	11.877	3.193	75.550	3.236	1.669	100.078	0.2250	0.2280	1.35
S22^a	21.414	13.321	3.362	87.217	3.520	1.717	109.792	0.2380	0.2354	−1.13
S23^b	21.846	13.897	3.412	89.752	3.596	1.858	113.235	0.2316	0.2482	7.19
S24^a	22.441	13.670	2.817	85.938	3.788	2.004	110.587	0.2555	0.2604	1.90
S25^a	15.160	10.320	4.952	87.349	2.959	3.292	117.473	0.2436	0.2372	−2.64
S26^a	20.717	11.902	2.572	76.887	3.158	1.946	99.394	0.2318	0.2394	3.26
S27^b	22.361	10.317	2.444	77.354	2.969	2.654	101.738	0.2291	0.2310	0.85
S28^a	20.628	11.224	2.822	89.800	3.272	2.816	108.860	0.2488	0.2503	0.62
S29^a	17.293	9.856	1.792	76.981	3.137	2.170	88.978	0.2352	0.2210	−6.02
S30^a	20.202	9.227	2.517	80.700	3.108	3.084	102.551	0.2360	0.2341	−0.82
Mean	16.362	11.035	2.479	82.798	3.601	2.509	100.000	0.2321	0.2369	2.49
RSD%	36.091	13.007	36.299	9.131	11.666	25.504	11.877

LQA, liquiritin apioside; LQT, liquiritin; LQG, liquiritigenin; GLA, glycyrrhizic acid; ISS, isoliquiritoside; ISG, isoliquiritigenin; P_6C%, the average content of the six compounds.
^aUsed for the calibration model.
^bUsed for the prediction model.
^cRE, relative error.
^dOutliers.

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Table 1 The results of the compounds content analysis and overview of the experimental and predicted values of PLS model.

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