Cigarette Filter

Abstract

[Problem to be Solved] To provide a cigarette filter capable of very effectively adsorbing/eliminating carcinogens such as dioxins and benzpyrene in mainstream smoke generated in cigarette smoking, and maintaining the flavor characteristic of cigarette and air permeability of cigarette filter. [Solution] Provided is a cigarette filter containing a harmful substance-eliminating material comprising a double-stranded DNA and/or a corn cob powder.

1 . A cigarette filter containing a harmful substance-eliminating material comprising a corn cob powder or a corn cob powder and a double-stranded DNA. 
   
   
       2 . The cigarette filter according to  claim 1 , wherein said double-stranded DNA is attached onto the external surface of said corn cob powder. 
   
   
       3 . The cigarette filter according to  claim 1 , wherein said corn cob powder is dried to contain a water content of 5 mass % or less. 
   
   
       4 . The cigarette filter according to  claim 1 , wherein said harmful substance-eliminating material is mixed in a filter rod consisting of a fibrous filter material. 
   
   
       5 . The cigarette filter according to  claim 4 , wherein said harmful substance-eliminating material comprises said double-stranded DNA and/or a corn cob powder having a particle diameter of 150 μm to 500 μm. 
   
   
       6 . The cigarette filter according to  claim 1 , wherein a plurality of filter rods consisting of a fibrous filter material are provided, and a layer composed of said harmful substance-eliminating material is interposed between said filter rods. 
   
   
       7 . The cigarette filter according to  claim 6 , wherein said harmful substance-eliminating material comprises said double-stranded DNA and/or a corn cob powder having a particle diameter of 500 μm to 1000 μm. 
   
   
       8 . The cigarette filter according to  claim 1 , wherein said harmful substance is dioxins or/and benzpyrene.