Method for decomposing polyesters containing aromatic moieties, a denier reduction method of fiber, and microorganisms having activity of decomposing the polyester

Abstract

A polyester containing aromatic moieties is contacted with microorganisms having the activity of decomposing the polyester to decompose or reduce it. Preferably, either or both of Trichosporon FERM BP-6445 or Arthrobacter FERM BP-6444 was contacted with the polyester to decompose or reduce it. A fiber made of the polyester or a cloth made of such fiber may be reduced by contacting it with the microorganisms having the activity of decomposing the polyester.

1 - 13 . (canceled)  
   
   
       14 . A reduced fiber produced by a denier reduction method comprising contacting a microorganism having activity for decomposing a polyester containing an aromatic moiety, with the fiber to reduce the denier of the fiber.  
   
   
       15 . A reduced fiber produced by a denier reduction method as claimed in  claim 14  wherein the fiber is reduced by contacting it with  Trichosporon  FERM BP-6445.  
   
   
       16 . A reduced fiber produced by the denier reduction method as claimed in  claim 14  wherein the fiber is reduced by contacting it with  Arthrobacter  FERM BP-6444.  
   
   
       17 . A reduced cloth produced by the denier reduction method as claimed in  claim 14  wherein a cloth made of the fiber is contacted with the microorganism to reduce the weight of the cloth.  
   
   
       18 - 23 . (canceled)