Table 3.

Recovery of quercetin, kaempferol and isorhamnetin from Ginkgo foliage (n = 3).

	Aglycone content of the sample (mg)			Amount of added aglycone standard (mg)			Amount of the sample determined with added aglycone standard (mg)			Recovery (%)
Sample	Quercetin	Kaempferol	Isorhamnetin	Quercetin	Kaempferol	Isorhamnetin	Quercetin	Kaempferol	Isorhamnetin	Quercetin	Kaempferol	Isorhamnetin
1	2.80	2.46	1.39	1.40	1.30	0.50	4.23	3.72	1.91	100.71	98.94	101.06
2	2.80	2.46	1.39	2.80	2.60	1.00	5.57	5.1	2.41	99.46	100.79	100.84
3	2.80	2.46	1.39	4.20	3.90	1.50	6.88	6.33	2.86	98.29	99.53	98.96
Average										99.49	99.75	100.29