Toxcity test of a medicinal starch irradiated with a dose of 5kGy by

60

Co γ source has been carried out with feeding test for 90 days and short-term test for mutagenicity. The results showed non-significant effects on the growth

feed availability rate

blood picture and liver function in the rats fed with irradiated starch. The increase of MNPCE in bone marrow

chromosomal aberration rate and polyploid were not observed in the tests. All results were proved that non-genotoxic effects was occured.

Ames test showed that both of the base pair transversion and frameshift mutant in DNA was not induced by irradiated starch. There was no statistical significance in both. pathologic changes and the organic coefficient between the testing group and contracts-The safety of eating irradiated starchmay be justified by all the tests above.