Table 4.

Characterization of the untreated and UVB-exposed wheat germ oils that were used in the mouse study.

	Wheat germ oil
	Untreated	UVB-exposeda
Ergosterol (μg/g)	42.2	42.3
7-DHC (ng/g)	960	921
Vitamin D2 (ng/g)	<LLOQ	850
Vitamin D3 (ng/g)	<LLOQ	34.8
Tocopherols (mg/g)
α	1.32	1.34
β	0.51	0.50
γ	0.12	0.15

^aUVB exposure conditions: exposure time,10 min; oil layer thickness, 3.2 mm; distance of the UVB-emitting lamp, 13 cm.

7-DHC, 7-dehydrocholesterol; LLOQ, lower limit of quantification (4.3 ng/g).