Comparison of Effects of the Ethanolic Extracts of Brazilian Propolis on Human Leukemic Cells As Assessed with the MTT Assay

Table 1

Flavonoids and other chemical constituents of propolis groups 12 and 13, determined by RPHPLC (mg/g⁻¹).

	Propolis G12			Propolis G13
Peak no.	compound	Quantity in mg/g^−1 of propolis	Peak no.	compound	Quantity in mg/g^−1 of propolis
1	Coumaric acid	10.7	1	Rutin	1.3
2	Ferulic acid	2.4	2	Liquiritigenin	7.1
3	Λ 245 nm^a	+	3	Daidzein	4.3
4	Cinnamic acid	2.6	4	Pinobanksin	6.0
5	Pinobanksin	1.7	5	Λ 251, 292 nm^a	+
6	Kaempferol	1.3	6	Quercetin	1.9
7	Isosakuranetin	4.9	7	Luteolin	2.1
8	Chrysin	1.9	8	Λ 241, 272, 281 nm^a	+
9	Acacetin	6.7	9	Dalbergin	0.9
10	Kaempferide	12.6	10	Isoliquiritigenin	12.1
11	Λ 244 nm^a	+	11	Formononetin	19.5
12	Λ 230 nm^a	+	12	Λ 235, 263 nm^a	+
13	Λ 245 nm^a	+	13	Pinocembrin	7.1
14	Λ 228, 246 nm^a	+	14	Pinobanksin 3-acetato	2.6
15	Artepillin C	38.6	15	Biochanin A	1.5
16	Λ 223, 276 nm^a	+	16	Λ 238, 260, 269 nm^a	+
			17	Λ 233, 249, 329 nm^a	+
			18	Λ 233, 256 nm^a	+

^aUnidentified constituents represent only UV spectral absorption maxim. + Present, but not quantified.