Comparison of the Level of Boron Concentrations in Black Teas with Fruit Teas Available on the Polish Market

Table 1

Information on the tea types, ingredients, origins for the analyzed tea samples, and the result of concentration of boron in cup of tea, fruit brew samples, calculated amounts of boron in tea infusion as three cups a day (200 mL/cup), and calculated percentage of the water soluble fraction of boron and the pH value for water extracts.

Sample	Type of tea	Composition of tea and ingredients	Origin	Tea weight per bag g	Concentration of boron in cup (200 mL) of tea and fruit brew mg/200 mL	Calculated amounts of boron in tea infusion as three cups a day (200 mL/cup)	Calculated percentage of the water soluble fraction of boron %	pH value for water extracts
1	Black	100% tea leaves	Kenya, India (Assam)	3.00	0.877 ± 0.115	2.630 ± 0.345	12.09	5.071
2	Black	100% tea leaves	Africa, India (Assam)	2.00	0.984 ± 0.057	2.951 ± 0.172	18.19	4.948
3	Black	Tea leaves with bergamot flavored.; Lemon aroma. Gluten	India, Kenya, Ceylon	1.50	0.829 ± 0.041	2.487 ± 0.122	23.74	4.811
4	Black	100% tea leaves	India (Assam)	2.00	0.955 ± 0.020	2.866 ± 0.059	16.78	5.288
5	Black	100% tea leaves	China (Yunnan)	2.00	0.289 ± 0.009	0.868 ± 0.027	7.983	4.973
6	Black	100% tea leaves	Ceylon	2.00	0.893 ± 0.046	2.680 ± 0.138	15.45	6.27
7	Black	100% tea leaves.; Bergamot flavor	NA^a	2.00	1.144 ± 0.050	3.431 ± 0.150	24.21	4.653
8	Black	100% tea leaves.; Bergamot flavor	Ceylon (region of Dimbula)	1.50	0.446 ± 0.017	1.338 ± 0.051	12.33	4.782
9	Black	100% tea leaves	Himalayas	1.40	0.621 ± 0.028	1.862 ± 0.083	22.79	4.567
10	Black	100% tea leaves	Sri Lanka	2.00	0.742 ± 0.024	2.226 ± 0.073	14.35	6.425
11	Black	100% tea leaves	India (Assam)	1.75	0.726 ± 0.034	2.178 ± 0.101	17.43	5.577
12	Black	100% tea leaves.; Lemon peel	NA^a	1.70	0.692 ± 0.031	2.077 ± 0.094	15.47	4.526
13	Black	NA^a	NA^a	1.75	0.454 ± 0.023	1.361 ± 0.070	15.61	4.903
14	Black	NA^a	NA^a	1.50	0.691 ± 0.040	2.073 ± 0.120	19.39	5.955
15	Black	NA^a	NA^a	1.50	1.346 ± 0.080	4.037 ± 0.241	26.56	4.882
16	Black	100% tea leaves	India (Assam)	1.30	1.029 ± 0.034	3.086 ± 0.101	23.24	6.887
17	Black	100% tea leaves	Sri Lanka	1.75	0.921 ± 0.040	2.763 ± 0.121	16.32	4.737
18	Black	100% tea Leaves.; Bergamot flavor	Indonesia, Kenya, Sri Lanka	1.40	1.091 ± 0.051	3.274 ± 0.153	21.80	4.62
19	Black	NA^a	NA^a	1.40	0.757 ± 0.028	2.270 ± 0.085	20.30	4.866
20	Black	NA^a	NA^a	2.00	1.171 ± 0.058	3.513 ± 0.174	22.73	4.505
21	Black	NA^a	NA^a	1.50	1.454 ± 0.064	4.363 ± 0.192	24.53	4.582
22	Black	NA^a	NA^a	1.50	0.953 ± 0.375	2.859 ± 1.126	26.95	5.829
23	Black	NA^a	NA^a	1.40	1.208 ± 0.054	3.624 ± 0.163	22.73	5.266
24	Black	NA^a	NA^a	1.40	1.145 ± 0.057	3.436 ± 0.171	23.26	5.047
25	Fruit	Tea leaves with strawberry flavor	Sri Lanka	1.50	0.725 ± 0.030	2.176 ± 0.090	17.41	4.765
26	Fruit	Tea leaves with strawberry flavor	NA^a	1.40	0.887 ± 0.048	2.660 ± 0.144	24.65	4.578
27	Fruit brew	Hibiscus.; Rosehip. Apple.; Orange peel.; Raspberry.; Elderberry fruit	NA^a	2.50	7.241 ± 0.368	21.72 ± 1.105	68.56	2.702
28	Fruit brew	Hibiscus.; Chokeberry.; Apple.; Blackberry leaf.; Rosehip. Flavors.; Lemon peel.; Orange Peel.; Black Currant.; Strawberry fruit 0.1%	NA^a	2.00	3.031 ± 0.101	9.094 ± 0.302	42.50	2.641
29	Fruit brew	Hibiscus Flower.; Wild rose 20%. Black currant 11%. Aronia 10%. Apple 9.3%. Orange peel 2%	NA^a	2.30	2.793 ± 0.081	8.379 ± 0.243	44.61	2.741
30	Fruit	Tea leaves.; Ginger	Ceylon	1.50	1.193 ± 0.062	3.580 ± 0.185	26.29	4.533
31	Fruit brew	Hibiscus.; Apple. Blackberry leaf.; Flavors.; Rosehip fruit cranberries 1% citric acid.; Acidity regulator-fruit raspberry 0.3%	NA^a	2.00	4.940 ± 0.226	14.82 ± 0.679	54.24	2.560
32	Fruit brew	Wild rose 55%.; Hibiscus flower 30%.; Raspberry flavor. Raspberry fruit 3%.; Citric acid. Acidity regulator	NA^a	2.00	3.258 ± 0.107	9.775 ± 0.321	50.85	2.656
33	Fruit brew	Rosehip. Hibiscus flower.; Cherry flavor.; Granulated yogurt 1%	NA^a	3.00	5.828 ± 0.327	17.48 ± 0.980	59.37	2.958
34	Fruit brew	Hibiscus flower.; Apple, blackcurrant 7%.; Raspberry 6%.; Licorice 4%.; Blackberry 4%.; Blueberry 4%.; Dried juice of 2%. Malic acid.; Acidity regulator	NA^a	2.00	3.799 ± 0.102	11.40 ± 0.306	51.00	2.644
35	Fruit brew	Raspberry 40%.; Chokeberry.; Elderberry.; Apple. Flavoring. Citric acid	NA^a	2.00	2.524 ± 0.106	7.573 ± 0.319	52.20	2.809
36	Fruit brew	Wild rose 56%, hibiscus.; Raspberry flavor.; Raspberry (1% fruit.; Maltodextrin-from starch)	NA^a	2.00	4.052 ± 0.150	12.16 ± 0.450	57.07	2.804

Data not available.