Spray Encapsulation of Iron in Chitosan Biopolymer for Tea Fortification

Table 3

Colour and pH of milk tea fortified with various iron microcapsules and EDTA (value ± SD, where n = 3).

No	Samples	Fe in microcapsules (%)	Water loss on boiling (%)	pH	△E	Colour
1	1% w/v tea in milk	0	8.91 ± 0.46	6.35	—	Standard
2	Tea + CH30Fe + EDTA	4.42 ± 0.12	9.68 ± 1.89	6.27	12.46	Unacceptable
3	Tea + CH40MD + EDTA	7.45 ± 0.20	9.51 ± 0.65	6.28	8.86	Acceptable
4	Tea + CH40MDST + EDTA	7.04 ± 0.15	8.99 ± 0.53	6.29	12.33	Unacceptable
5	Tea + CH50TPP + EDTA	9.31 ± 0.31	8.69 ± 0.68	6.33	6.60	Acceptable
6	Tea + FeSO4 7H2O + EDTA	20.14	8.74 ± 1.15	6.35	19.91	Negative control

The iron concentration in tea was adjusted to 4 mg per cup of tea.