Dual Stimulus-Dependent Effect of Oenothera paradoxa Extract on the Respiratory Burst in Human Leukocytes: Suppressing for Escherichia coli and Phorbol Myristate Acetate and Stimulating for Formyl-Methionyl-Leucyl-Phenylalanine

Table 3

Characteristics of the extract polyphenolics identified by HPLC-MS analysis.

Compound	Structure	min	nm	Mol. formula	M–Hm/z	Content %
Catechin		4.77	276	C15H13O6	289.0712	4.8
Epicatechin gallate		10.25	274	C22H10O7	441.0823	2.6
PGG		10.32	279	C41H31O26	939.1104	1.66
Gallic acid		1.61	270	C7H5O5	169.0137	0.8
Quercetin		12.04	258, 369	C15H9O7	301.0348	0.4
Ellagic acid		9.55	254, 367	C14H5O8	300.9984	0.25
Caffeic acid		5.54	295, 327	C9H7O4	179.0349	0.08
Methyl gallate		4.53	269	C8H7O5	183.0293	0.02