Cleaning
EXTENSIVE USE
OF
ENZYMES IN CLEANING IS BOTH, ECOLOGICALLY
COMPATIBLE AND MODERN BIO-HIGHTECH.
In CLEANING
applications a variety of enzyme activities is used as
enzyme detergents. Professional cleaners may prefer to use digesters
separate from detergents in presoak blots. In addition enzyme
detergents strongly support the activity of surfactants synergistically
acting by increasing solubility and liberation of bound pigments/stain.
The most abundant pigments are
Anthocyanes, Tannins, Polyphenoles, Porphyrines (Heme, Chlorophylls),
Beta Carotins, Lycopenes but there are many more. Enzymes act by degradation of many
different composite contaminants suc as:
BLOOD, BEER, WINE, BUTTER, MARGARINE, WAX, TOMATO SAUCE,
CHEWING GUM, CHOCOLATE, COCKTAILS, COFFEE, COUGH SYRUP, CRAYONS, EGG,
FOOD COLOURING, FRUIT JUICE, FURNITURE STAINS, GLUE (School), GRASS,
GRAVY, GREASES , ICE CREAM, INK (India), JAM & JELLY, LIPSTICK,
MILDEW, MILK, MUCILAGE, MUD, MUSTARD, OILS, PAINT (Oil), PAINT (Water),
SHOE POLISH, FRESH URIN (Wet), OLD URINE (Dry), MANOIR, VOMIT, INSECT
DEBRIS.
The most important
application for
technical enzymes is in cleaning textiles and in special technical cleaning
procedures e.g. cleaning of filters. Cellulose fibers of cotton,
hemp and linen as well as keratine fibers of wool and all synthetic
fibers can be efficiently cleaned with support of a variety of enzyme activities.
The most important enzymes for
cleaning textiles are Proteases,
Lipases, Amylases, Glucanases, Cellulases. Other more specific enzymes have
considerable potential to be used for highly specific tasks in
cleaning e.g. Catalase or
other Oxidoreductases in enzymatic
bleaching or in hydroxylizing
and solubilizing contaminating
substances.
The cleaning enzymes mentioned above do in general not affect the fibers and are
specific for the contaminating substances. Only few cleaning
applications affect the garment fibers very superficially.
In biopolishing
procedures it is
desirable that the applied enzyme activities are Cellulases
specific for the cellulose fibers of cotton fabrics as well as hemp and
linen fiber made garments.
The effects of such treatment are
visible in a smooth and fresh look of the textiles by resolution
of microentanglements and depilling. They also remove any dirt by
minimally clearing away superficial material in the nanometer scale.
Wool made clothes can be biopolished
by Proteases with Keratinase activity freshing up the
garment and showing
a renewing effect. Other applications of technical enzymes used in the
production of textiles are summarized in the application field of
textile processing e.g. very harsh treatment of cotton fabrics with
cellulose leads and the stone washing
effect which is used to grade up
cotton products like trousers.
The most important enzymes for cleaning
of surfaces in textile
cleaning procedures are Proteases, Lipases, Amylases, Glucanases,
Cellulases but other specific enzyme activities have
considerable
potential and favorable properties to be used for highly specialized
tasks in cleaning like Catalase or
other Oxidoreductases, e.g.
enzymatical bleaching or in hydroxylizing and solubilizing
contaminating substances. Concerning surfaces one can distinguishe between plain
surfaces and hidden, inaccessable and inner surfaces.
Cleaning
of fluids is
a field of high diversity and several applications can be classified in different application areas like
technical processing or environmental technologies or in application
fields like food processing. The effects of such an enzymatic treatment
are reduction of viscosity, degradation of floating particles or
enzymatic-chemical conversion of molecules, e.g. detoxification. These
applications are mostly realised in technical processing suc as removing
fruit juice cloudiness by Pectinase
or removing protein from fluids,
e.g. Chymotrypsin mediated
clotting of milk proteins (albumin) or
removing contaminating protein from DNA-preparations in Molecular
Biology.