Methioninase inhibitor and composition and food or drink containing the same

Abstract

The invention provides a methioninase inhibitor to suppress the production of methyl mercaptan that is a causative substance of a bad smell by inhibiting methioninase originated from bacteria, as well as a composition and a food or drink containing the same, wherein the methioninase inhibitor contains an extract obtained from a plant of the family Myrsinaceae , genus Myrsine , preferably Myrsine seguinii as an active ingredient; and further provides a methioninase inhibitor, as well as a composition and a food or drink containing the same, wherein the methioninase inhibitor contains as an active ingredient one or more selected from the group consisting of myrsinoic acid A, myrsinoic acid B, myrsinoic acid C, myrsinoic acid E and myrsinoic acid F; preferably the myrsinoic acid A, myrsinoic acid B, myrsinoic acid C, myrsinoic acid E and myrsinoic acid F are obtained from a plant of the family Myrsinaceae , genus Myrsine , preferably Myrsine seguinii.

1 . A methioninase inhibitor comprising an extract of a plant belonging to family Myrsinaceae, genus  Myrsine  as an active ingredient. 
   
   
       2 . The methioninase inhibitor according to  claim 1 , wherein the plant belonging to family Myrsinaceae, genus  Myrsine  is  Myrsine seguinii.    
   
   
       3 . A methioninase inhibitor comprising as an active ingredient one or more selected from the group consisting of myrsinoic acid A, myrsinoic acid B, myrsinoic acid C, myrsinoic acid E and myrsinoic acid F according to the following formulas (I), (II), (III), (IV) and (V) respectively. 
     
       
         
         
             
             
         
       
       
         
         
             
             
         
       
     
   
   
       4 . The methioninase inhibitor according to  claim 3 , wherein the myrsinoic acid A, myrsinoic acid B, myrsinoic acid C, myrsinoic acid E and myrsinoic acid F are extracted from a plant belonging to family Myrsinaceae, genus  Myrsine.    
   
   
       5 . The methioninase inhibitor according to  claim 4 , wherein the plant belonging to family  Myrsinaceae , genus  Myrsine  is  Myrsine seguinii.    
   
   
       6 . A composition comprising the methioninase inhibitor according to  claim 1  as an active ingredient. 
   
   
       7 . A food or drink comprising the methioninase inhibitor according to  claim 1  as an active ingredient. 
   
   
       8 . A composition comprising the methioninase inhibitor according to  claim 2  as an active ingredient. 
   
   
       9 . A composition comprising the methioninase inhibitor according to  claim 3  as an active ingredient. 
   
   
       10 . A composition comprising the methioninase inhibitor according to  claim 4  as an active ingredient. 
   
   
       11 . A composition comprising the methioninase inhibitor according to  claim 5  as an active ingredient. 
   
   
       12 . A food or drink comprising the methioninase inhibitor according to  claim 2  as an active ingredient. 
   
   
       13 . A food or drink comprising the methioninase inhibitor according to  claim 3  as an active ingredient. 
   
   
       14 . A food or drink comprising the methioninase inhibitor according to  claim 4  as an active ingredient. 
   
   
       15 . A food or drink comprising the methioninase inhibitor according to  claim 5  as an active ingredient.