Does Propolis Contain Tannins?

Table 1

Samples of Brazilian propolis, corresponding types, and contents (%) of total phenols and tannins (as determined by the method of BSA precipitation/colorimetry).

Municipality (state)	Propolis type	Total phenols	Tannins	Tannins/total phenols
União da Vitória (Paraná)	Brown	3.8	0.7	0.18
	Brown	4.0	0.6	0.15
Salitre (Ceará)	Brown	6.5	1.0	0.15
Paraibuna (São Paulo)	Green	10.6	2.1	0.20
Arcos (Minas Gerais)	Green	17.8	2.3	0.13
Esmeralda (Minas Gerais)	Green	25.5	3.6	0.14
Viçosa (Minas Gerais)	Green	19.5	3.6	0.18
Maceió (Alagoas)	Red	14.6	4.1	0.28