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Introduction

Americos Amylase 180 is a desizing agent based on bacterial alpha amylase. It is a mixture of highly concentrated alpha-amylase, wetting agent and lubricant to convert most of the sizes viz. starch, starch derivatives, synthetic sizes and their blends into water soluble products. Specifically it can be used for the following sizing materials and their combinations:

Starch
Starch / Polyvinyl alcohol
Starch / Polyvinyl alcohol / Carboxyl Methyl Cellulose (CMC)
Starch / Polyvinyl alcohol / Acrylates

Americos Amylase 180 has three different types of actions. The built-in wetting agent ensures proper penetration of enzyme in the textile material. The enzyme then converts the starch sizes in to soluble dextrin products, which can be easily removed in the subsequent washings. Moreover, the in-built lubricant reduces fiber to fiber and fiber to metal friction. This unique combination prevents the formation of unwanted creases, streaks, lines and crack marks during desizing process.

Physical Property

Appearance	Viscous Liquid
Chemical character	Blend of amylase enzyme and non-ionic surfactants
Ionic Nature	Non-ionic
Solubility	Readily soluble in water
pH (on 1% solution)	7 ± 1
Application pH range	6-7
Application temperature	60-70^oC

Hard water	Good, Ca²⁺ and Mg²⁺ ions increase the efficacy of the enzyme
Acids	Good from pH 5 to 7
Alkalis	Stable in alkaline region from pH 7 to 9
Metal ions	Iron and copper ions are poisonous for enzymes

Non-ionic surfactant	Generally very good
Anionic surfactant	Selective, some reduce the efficacy of the enzyme
Solvent based surfactant	Selective, some reduce the efficacy of the enzyme
Organic sequestrates	Generally good
Reducing / oxidizing agent	Reduce the efficacy of enzyme

Application Methods

Americos Amylase 180 can be applied by any one of the following techniques.

(a) Exhaust application (jigger, soft-flow m/c and winch)

Americos Amylase 180	1 - 2 ml/l
Americos Lub Pro VX	0.5 - 1 g/l
Temperature	60-70°C
pH	: 6-7
Time	: 30-60 min.
After the treatment, drain the liquor; give one hot wash and then one cold wash. Alkaline washing with soda ash improves the removal efficiency of degraded sizing material.

(b) Exhaust application (wash-wheel)

Americos Amylase 180	1% (owg)
Americos Lub Pro VX	0.5 - 1 g/l
Temperature	60 - 70°C
pH	6 - 7
Time	30 - 60 min
First, raise the temperature of bath to 60 - 70oC and add Amylase 180 and Americos Lube Pro VX. The machine should run for a minute to ensure proper mixing of chemicals. Adjust pH 6 - 7. Thereafter, garment should be loaded. The desizing time can be varied from 30 - 60 min depending upon the type of fabric and chemical dosage.

(c) Semi-continuous application (pad-batch process)

Americos Amylase 180	3 - 5 ml/l
pH	6 - 7
Impregnate the fabric at 60 - 70°C for a pick-up of 80 - 100%. Store the fabric for 8 - 12 h; give one hot wash with soda ash, one plain hot wash and one cold rinse.

Effect of pH on Enzyme Activity
kenencore Group

Effect of Temperature on Enzyme Activity
kenencore Group

Storage & Handling Precautions

Store in a cool place
Avoid storing in direct sunlight
The shelf life of Americos Amylase 180 is one year if stored below 40°C
The usual precaution for chemicals should be observed

Technical Service
Information covering specific application of this product is available. Americos Industries will work with customers to enhance processes and solve problems. Let us know what you need and we will assist you.

(The information and data contained herein are based on controlled lab work. The recommendations are given on experience basis, but cannot be extended to assure every possible case. It should be verified and evaluated by the user through proper testing for the intended conditions of application. Americos does not express or imply any warranty, or guarantee the suitability of the product for the application intended by buyer of the product)