Table 6.

The top 20 keywords related to tea in AD.

Rank	Keywords	Count
1	polyphenol	144
2	oxidative stress	133
3	amyloid	101
4	epigallocatechin gallate	92
5	antioxidant	63
6	cognitive impairment	61
7	dementia	45
8	in-vitro	37
9	brain	34
10	neuroprotection	34
11	neurodegenerative diseases	30
12	nf-kappa-b	29
13	flavonoids	28
14	a-beta	27
15	acetylcholinesterase	25
16	mouse model	24
17	inflammation	23
18	parkinsons-disease	23
19	neurodegeneration	22
20	protein	21