Cigarette filter

Abstract

A cigarette filter has a filter medium containing a basic amino acid or a basic amino acid salt and a moisturizing agent selected from the group consisting of glycerin, sodium propionate and sodium lactate.

1 . A cigarette filter, comprising a filter medium containing a basic amino acid or a basic amino acid salt and a moisturizing agent.  
     
     
         2 . The cigarette filter according to  claim 1 , wherein the basic amino acid or the basic amino acid salt is selected from the group consisting of arginine, arginine salt, lysine, lysine salt, histidine, histidine salt, ornithine, ornithine salt, citrulline, citrulline salt, hydroxyzine and hydroxyzine salt.  
     
     
         3 . The cigarette filter according to  claim 1 , wherein the moisturizing agent is selected from the group consisting of glycerin, sodium propionate and sodium lactate.  
     
     
         4 . The cigarette filter according to  claim 1 , wherein the basic amino acid or the basic amino acid salt is contained in an amount of 3.5 mg or more.  
     
     
         5 . The cigarette filter according to  claim 1 , wherein the ratio of the basic amino acid or the basic amino acid salt to the moisturizing agent falls within a range of between 1:1 and 1:2.