Table 1.

Extraction yields of crude and purified extracts from Mexican oak species obtained by hot water and maceration methods.

Extract	Extraction Method	% Extraction Yield (w/w Dry Bark) †
Quercus crassifolia	Hot water	20.0 ± 7.7 a *
Purified Quercus crassifolia	Hot water	2.7 ± 0.3
Quercus crassifolia	Maceration	11.0 ± 1.0 b,c
Quercus laurina	Hot water	14.2 ± 0.2 b
Quercus laurina	Maceration	13.6 ± 0.1 b
Quercus scytophylla	Hot water	6.8 ± 1.9 c,d
Quercus scytophylla	Maceration	4.4 ± 0.2 d

^† % (w/w dry bark). Means with different letters (^a, ^b, ^c, ^d) in the same column are significantly different at p < 0.05 (ANOVA, followed by Duncan’s test). Means with * in the same column are different at p < 0.05 (Student’s t-test, comparing crude and purified Q. crassifolia hot water extracts).