Use of Enzyme in Textile and Laundry Detergent

Enzyme in Textile

4  Enzymes used in textile are:             
                                                      - Amylase
                                                      - Cellulase
                                                      - Pectinase
                                                      - Protease
4  Wet processing activities:
- Resizing                                      - Bleach cleanup  
- Biopolishing                                - Bioscouring
- Denim finishing                          - Dewooling

4  Resizing
®    Amylase (starch hydrolysis).
®    Starch, thread, adhesive substances during weaving.
®    Softness, smoothness.
®    After weaving, the starch has to be remove to prepare fabrics for the finishing steps of bleaching or dyeing, starch splitting enzyme amylases are wed to desire woven fabrics of their highly efficient & specific way of desiring without harming the yarn.
4  Biopolishing
®    Cellulase
®    Most cotton fibers tend to be fluffy.
®    Treating the fiber with biopolishing enzymes remove the small hairs or fuzz (tiny strands of fiber) that produce from the surface yarn (fiber for knitting, weaving etc).
®    Biopolishing make cloths as brand new & make smother as even washed them several times.

4  Denim finishing or stonewash
®    Cellulase (Enzyme in natural solution?) 
®    Stone wash jeans are the height of fashion. Traditional way of producing it is to wash the jeans with pumic stones.
®    This is a harsh treatment both for the jeans & the environment.
®    The fabric of the jeans is weekend & may appear flossy.
®    Life span of the stone wash jeans is for shorter than that of regular blue jeans.
®    By adding cellulose enzymes to the process these disadvantages may be overcome:-
- The look of the denim jeans or stone wash jeans are same.
- The process do not damaged the fabric.
- The jeans last much longer.
- The process save wash look there is no need for several revising process to get rid of stone.

4  Bleach Cleanup
®    Cellulase bleach cleanup was carried out by H2O2 (Hydrogen peroxide).

4  Bioscouring
®    Clean by rubbing with caustic soda.
®    Multicomponent enzyme.
®    Prior to dyeing or printing, noncellulose, component from form native cotton removed by scouring.

4  Protease
®    Used in detergent to remove protein based stains.
Such as:
                  mucus (these substances are almost feces insoluble & tend to adhere to egg textile) gravy 
ü  Protease hydrolysis products are peptides which are readily dissolved or dispersed in the washing liquor.
ü  Protease use to make ‘Shrink proof’
ü  Make the wool a silky luster and added to its value.

Application of Enzyme in laundry Detergent

Proteases were first added to detergent to remove recalcitrant such as blood, egg protein etc.

4  Detergent preparation are routinely formulated with-
®    Large amount of non-ionic surfactants to allow water to contact hydrophobic dirt strongly alkaline soaps to enhance washing effects oxidizing compound such as –hyperchlorite.

4  Perborate or percarbonate
®    Sodium tri-phosphate to counter act water hardness
®    Prevent scaling
®    In addition formulation on contain bleach contain peroxide.
®    Laundry detergents are available in granulated from use in detergent powders, as liquid preparation in aqueous solution and as liquid concentrate used for remaining stubborn stain.
®    Enzymes in laundry detergent are almost all producing using Bacillus enzymes, which secrets detergents enzymes in to the fermentation broth.

v  Cellulase - washing cotton fiber
v  protease - Blood and egg stain
v  Lipase     - it has role in grease stains, it convert triglyceride into mono and di-glyceride.

®    First commercial enzymes developed by the application of Genetic engineering and the first ever detergent lipase.
v  Amylase - Grass and starch dirt hydrolyze starch in to dextrins and oligosaccharides are readily dissolve in the washing liquor.

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