Results showed that all the tested food color additives could not be absorbed in the silkworm digestive canal, therefore, none of them can change the original color of silkworm larvae.

• 各种色素对蚕体的生命率都有一定影响,差异很大,其中以洋绿的毒性最大,洋红次之,再次是苋菜红,日落黄和胭脂红则较弱;