Table 4. The centrality between the phytochemical ingredients and the pharmaceutical efficacy in the tea drink¹⁾

NO.	Chemical	Degree centrality	Chemical	Closeness centrality	Chemical	Betweenness centrality
1	Phenol	0.681	Phenol	0.928	Phenol	0.076
2	Flavonoid	0.448	Flavonoid	0.883	Flavonoid	0.030
3	Mineral	0.353	Mineral	0.851	Catechin	0.019
4	Vitamin C	0.328	Vitamin C	0.851	Vitamin C	0.016
5	Terpene	0.293	Terpene	0.845	Anthocyanin	0.016
6	Catechin	0.293	Amino acid	0.839	Mineral	0.015
7	Carotenoid	0.284	Anthocyanin	0.839	Terpene	0.015
8	Amino acid	0.276	Catechin	0.833	Ginsenoside	0.011
9	Anthocyanin	0.276	Carotenoid	0.823	Amino acid	0.010
10	Vitamin	0.233	Quercetin	0.819	Carotenoid	0.009
NO.	Efficacy	Degree centrality	Efficacy	Closeness centrality	Efficacy	Betweenness centrality
1	Antioxidant	0.670	Antioxidant	0.689	Antioxidant	0.383
2	Antiinflammatory	0.452	Antiinflammatory	0.570	Antiinflammatory	0.165
3	Antimicrobial	0.396	Antimicrobial	0.544	Antimicrobial	0.136
4	Anticancer	0.385	Anticancer	0.539	Anticancer	0.116
5	Cardiovascular disease	0.182	Cardiovascular disease	0.464	Hepatic-health	0.040
6	Anti-diabetes	0.167	Anti-diabetes	0.459	Weight control	0.039
7	Antihypertensive	0.165	Antihypertensive	0.459	Anti-diabetes	0.036
8	Hepatic-health	0.148	Hepatic-health	0.454	Cardiovascular disease	0.034
9	Weight control	0.141	Weight control	0.453	Antihypertensive	0.022
10	Gastric function improve	0.129	Gastric function improve	0.449	Gastric function improve	0.018

Table 4 is organized in descending order according to the centrality in a 2-mode network consisting of chemical ingredient and pharmaceutical efficacy. The three values were bolded in the order in which the centrality was highest.