Enzymatic treatment of cellulosic textile

Abstract

The invention relates to a process for treatment of cellulosic material, for example, knitted or woven cotton fabric or yarn, comprising treating cellulosic material with a pectinase and a surfactant.

1 . A composition, comprising a pectinase and a surfactant with chemical structure A and/or a surfactant with chemical structure B:
   R—(CH 2 ) m —Y—(CH 2 CH 2 O) n —H,  chemical structure A:
   
       wherein R is selected from the group consisting of —H, —CH 3 , —CH 2 —CH 3 , —CH 2 —CH 2 —CH 3 , and —CH—(CH 3 ) 2 ; Y is selected from the group consisting of —CH 2 — and —CO—O—; 6≤m≤14 and 1≤n≤18;
   H 3 C—(CH 2 ) f —C(SO 3 Na)H—(CH 2 ) e —CH 3 ,  chemical structure B:
 
 
       wherein f+e=11−14. 
     
     
         2 . The composition of  claim 1 , wherein the composition comprising a pectinase and a surfactant with chemical structure A. 
     
     
         3 . The composition of  claim 1 , wherein R is —CH—(CH 3 ) 2  and Y is —CH 2 —. 
     
     
         4 . The composition of  claim 1 , wherein m is 9. 
     
     
         5 . The composition of  claim 1 , wherein n is 5, 6, 8, 10 or 12. 
     
     
         6 . The composition of  claim 1 , wherein the pectinase is a pectate lyase; preferably a neutral pectate lyase; or preferably the pectinase comprises or consists of amino acid sequences having at least about 60% identity, preferably at least about 70% identity, more preferably at least about 80% identity, more preferably at least about 90% identity, more preferably at least about 95% identity, more preferably at least about 96% identity, more preferably at least about 97% identity, more preferably at least about 98% identity, more preferably at least about 99% identity, and most preferably 100% identity with SEQ ID NO:1. 
     
     
         7 . The composition of  claim 1 , wherein the composition further comprises a cellulase. 
     
     
         8 . The composition of  claim 1 , wherein the composition further comprises one or more enzymes selected from the group consisting of amylase, lipase, mannanase, xylanase, protease, oxidase, catalase and cutinase. 
     
     
         9 . A method for scouring of a cellulosic material, comprising treating cellulosic material with a pectinase and a surfactant with chemical structure A and/or a surfactant with chemical structure B:
   R—(CH 2 ) m —Y—(CH 2 CH 2 O) n —H,  chemical structure A:
   
       wherein R is selected from the group consisting of —H, —CH 3 , —CH 2 —CH 3 , —CH 2 —CH 2 —CH 3 , and —CH—(CH 3 ) 2 ; Y is selected from the group consisting of —CH 2 — and —CO—O—; 6≤m≤14 and 1≤n≤18;
   H 3 C—(CH 2 ) f —C(SO 3 Na)H—(CH 2 ) e —CH 3 ,  chemical structure B:
 
 
       wherein f+e=11−14. 
     
     
         10 . The method of  claim 9 , comprising treating cellulosic material with a pectinase and a surfactant with chemical structure A. 
     
     
         11 . The method of  claim 9 , wherein the pectinase is a pectate lyase; preferably a neutral pectate lyase. 
     
     
         12 . The method of  claim 9 , further comprising treating the cellulosic material with one or more enzymes selected from the group consisting of cellulase, amylase, lipase, mannanase, xylanase, protease, oxidase, catalase and cutinase. 
     
     
         13 . The method of  claim 9 , wherein the cellulosic material is textile, preferably the cellulosic material is fiber, yarn, fabric, garment; more preferably the cellulosic material is fabric including woven, non-woven, or knits. 
     
     
         14 . A method for treating textile, comprising
 (a) desizing the textile with an amylase;   (b) scouring the textile with a pectinase and a surfactant with chemical structure A and/or a surfactant with chemical structure B   
     
     
         15 . The method of  claim 14 , further comprising adding a cellulase before, during or after step (a) or step (b).