Table 2. Polyphenol recovery (%) using gallic acid as standard in human milk according to extraction methods.

Method	Mean	SD	Grouping*
A–1	115.85	62.52	A
C–3	596.84	341.83		B
C–2	587.08	292.05		B
B–3	843.27	440.63		B	C
B–2	2233.07	1774.71			C

*The same letter indicates no significant difference in the Kruskal-Wallis test for p<0.05.