Table 2.

GOS recovery measured in spiked infant formulae.

Formula	Method	Nonspiked  OS concentration  (g/100 g)	Spiking level 1  (2.6 g/100 g)  Recovery (%)	Spiking level 2  (5.1 g/100 g)  Recovery (%)	Spiking level 3  (10.3 g/100 g)  Recovery (%)
Infant formula	HPLC-FLD	0.18	100.8–102.0	97.3–97.6	92.1–96.7
H.A. formula	HPLC-FLD	0.37	92.2–94.9	95.1–95.8	92.7–95.7
Infant formula	HPAEC-PAD	n/a	94.6–99.3	n/a	n/a
H.A. formula	HPEAC-PAD	n/a	n/a	n/a	n/a

H.A. formulae are hypoallergenic formulae containing partially hydrolyzed proteins. n/a: not analysed.