Abstract: A composition for inhibiting the growth of mycotoxins without affecting the growth of fungi is provided. The mycotoxin is an Aflatoxin and the fungus is an Aspergillus. The anti-aflatoxin composition comprises benzimidazole derivatives of Formula, where the A is hydrogen or C1-C6 alkyl or C6-C14 aryl; B is C1-C10 alkyl or C6-C14 aryl or oxygen, sulfur, nitrogen containing heteroaryl; C and D are hydrogen or C1-C6 alkyl or C1-C6 alkoxyl or C6-C14 aryl; E is hydrogen or nitro or cyano or carboxyl or acetamidoxime or amidoxime or C1-C6 alkyl or C1-C6 alkoxyl or C6-C14 aryl or oxygen, sulfur, and nitrogen containing heteroaryl; F is hydrogen or C1-C6 alkyl or C1-C6 alkoxyl or C6-C14 aryl or oxygen, sulfur, and nitrogen containing heteroaryl, and mixture thereof with corresponding salts.