Selectived examination this in all the product of 208 kinds of zhongzis that 133 enterprises produce 17 provinces such as Beijing, Tianjin, municipality directly under the Central Government, municipality (do not involve exit product) , sampling percent of pass is 90.9% . In selectiving examination, the key is right the acid value in zhongzi product, cross oxidation value and zhongzi Xiezhong copper content 13 undertook examining with the project closely related human body health.
The discovery in selectiving examination, partial product coliform group exceed bid, at the same time still individual product exceeds limits to exceed a quantity to use agent of benzoic acid of additive agent for food, sweet taste to wait.