Effect of UV Irradiation and Temperature on Free Radical Properties in Dehydrocholic and Ursodeoxycholic Acids: An EPR Study

Table 1

Parameters of the EPR spectra of UV irradiated dehydrocholic acid (DH) and also ursodeoxycholic acid (UDC).

Compound	Time of; sterilization	(a. u.); ±0.02	a. u.; ±0.02	(mT); ±0.02	spin/g; ±0.02	±0.02	±0.02	±0.0002
DH	30 minutes	0.34	60.60	1.54	169.10	1.04	0.99	1.9981
	60 minutes	0.43	63.80	1.46	178.10	1.10	1.52	1.9982
UDC	30 minutes	0.32	87.30	2.08	243.80	0.75	0.67	1.9985
	60 minutes	0.38	114.50	2.08	319.70	0.56	1.31	1.9987

Notes. —amplitude of signal; —integral intensity; and —the asymmetry parameters; —line-width of EPR signal; —free radical concentrations; —factor.