Black Tea Source, Production, and Consumption: Assessment of Health Risks of Fluoride Intake in New Zealand
Table 1
Tea brands, weight of teabag, and fluoride content in tea infusions.
Sample number
Brand name
Weight of tea bag (g)
Fluoride in tea infusions made with 0.7 mg/L fluoridated drinking water (mg/L)
Fluoride in tea infusion made with deionized water (mg/L)
1
Bell Kenya Bold
3.3
3.9
3.2
2
Bell Original Tea
2.3
3.4
2.7
3
Pams-New World Supermarket Tea
2.4
3.1
2.4
4
Pak-n-Save Supermarket Budget Tea
2.1
2.8
2.2
5
Choysa Extra Strong
2.3
2.7
1.9
6
Twinings English Breakfast Extra Strong
2.7
2.6
1.8
7
Choysa Classic
2.2
1.8
1.3
8
Twinings Classic English Breakfast
2.3
1.7
1.1
9
Woolworths Home Brand Tea
1.9
1.6
0.9
10
Dilmah Organic
2.3
1.5
0.8
11
Chanui Pure Ceylon Tea
2.2
1.4
0.8
12
Twinings Lapsang Souchong Tea
2.3
1.4
0.8
13
Planet Organic Tea
2.2
1.2
0.7
14
Dilmah Premium Ceylon
1.7
1.2
0.6
15
Chanui Irish Breakfast
2.3
1.1
0.5
16
Dilmah English Breakfast Tea
2.0
1.1
0.5
17
Chanui English Breakfast
2.2
0.9
0.4
18
Dilmah Earl Grey Tea
2.2
0.9
0.4
Note. Two teabags selected at random from each branded box of tea. Each tea bag was brewed for a period of 5 minutes with 200 mL of water initially at 100°C. After five minutes of extraction, teabags were removed and the infusions were cooled to room temperature (18–20°C). F level of boiled and cooled tap water 0.7 mg/L. F level of deionized water was 0.0 mg/L. The F content of tea infusions made with drinking water is the mean of two samples tested from each brand of tea.
