| abstract |
A germ component selected from the group consisting of barley malt, wheat germ, soy bean germ, rice germ and extracts thereof reduces or completely inactinates the mutagenicity which is caused or enhanced by the combination of synthetic vitamin C and beverages, tobacco or cupreous ions. Catalase reduces or completely inactivates the mutagenicity and cytotoxicity caused or enhanced by said combination. Therefore, this mutagenicity and cytotoxicity may be reduced or inactivated by preparing a preparation of vitamin C comprising vitamin C and said germ component or catalase. |