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Table 3 Evaluation of the similarity of 20 Pu-erh green tea samples using Wuliang Pu-erh green tea common model of chromatographic fingerprints

From: Comparative analysis of volatiles difference of Yunnan sun-dried Pu-erh green tea from different tea mountains: Jingmai and Wuliang mountain by chemical fingerprint similarity combined with principal component analysis and cluster analysis

Sample no.

Correlation coefficient

Congruence coefficient (R)

Median

Average

Median

Average

W1

0.7944

0.8597

0.7527

0.8814

W2

0.8395

0.8341

0.8651

0.8610

W3

0.9633

0.9137

0.9698

0.9305

W4

0.9663

0.9093

0.9708

0.9228

W5

0.7876

0.8912

0.8189

0.9058

W6

0.7590

0.8977

0.7966

0.9128

W7

0.9624

0.9274

0.9691

0.9415

W8

0.9323

0.8751

0.9439

0.8970

W9

0.8512

0.8326

0.8753

0.8602

W10

0.7523

0.8681

0.7731

0.8873

J1

0.2594

0.3101

0.4008

0.4469

J2

0.2853

0.3898

0.4139

0.5036

J3

0.2314

0.3259

0.3785

0.4598

J4

0.3382

0.3564

0.4799

0.4998

J5

0.2766

0.3615

0.3907

0.4654

J6

0.2620

0.2875

0.3913

0.4169

J7

0.2403

0.2565

0.3835

0.4020

J8

0.2314

0.2528

0.3681

0.3906

J9

0.2146

0.2619

0.3366

0.3804

J10

0.2570

0.2743

0.3902

0.4092

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BMC Chemistry

ISSN: 2661-801X

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