Enzyme desizing advantages characteristics and activities. Enzymes are a type of bio-catalyst. They are organic compounds of high molecular weight which act as desizing agents. Enzymes are different from ordinary chemical influencers because they are very different in their action. Generally, the action of all enzymes is regulated by the temperature, concentration, time, and pH of the solution. Excess is one of the most important issues. Most enzymes cannot react above 75°C.
Advantages of Enzyme Desizing:
This method is used more because of the advantages of the enzyme desizing method as compared to other methods of desizing.
1. This desizing process is a continuous process. In this process, the density of the solution can be determined very quickly by accurately controlling the temperature, pH, etc.
2. This desizing method is less risky as there is no possibility of mildew (fungus) or hydro cellulose formation, the strength of the fabric is not reduced and uneven shade is not visible after the dyeing process.
3. This method has more ability to remove starch than other methods.
4. Unlike other methods, floor space is not required for piling the fabric.
5. In this method the weight loss rate of the cloth is less.
Characteristics of enzymes:
The following properties are commonly found in enzymes
1. An enzyme is a living organism.
2. It is a highly complex protein.
3. Its job is to ferment starch.
4. They are very sensitive to heat.
5. They are very specific in terms of action.
6. Their gravitational pull is relatively low.
7. Their effectiveness remains intact up to a certain limit of the pH of the solution.
8. It is soluble in water but insoluble in acid or alcohol.
9. The effectiveness of enzymes depends on their concentration, temperature, time, and pH.
Classification of Enzyme According to Source:
According to the source, the enzyme can usually be divided into two parts. E.g.
1. Vegetable
2. Animal
Vegetable enzymes can be further divided into two parts. E.g.
1. Malt Extract
2. Bacterial
Activities of Enzymes:
Enzyme desizing advantages characteristics and activities. The activity of all enzymes is regulated by concentration, temperature, and pH.
(A) Enzyme activity increases with increasing temperature. But maintains up to a certain limit. Exceeding that limit reduces the effectiveness.
(B) Again the stability of the enzyme decreases with increasing temperature.
(C) Salt can be added to the solution to a certain extent to increase the tolerance of the enzyme to heat.
(D) The effectiveness of the enzyme decreases over time.
(E) The effectiveness and stability of the enzyme vary greatly with the change in pH.
(F) The effectiveness of the enzyme decreases even as the concentration increases.
Recommendations for increasing efficient enzyme desizing:
1. The fabric must be soaked in hot water before enzyme desizing.
2. Ensure acceptable conditions for the enzymes used during desizing.
3. Regular enzyme efficacy should be tested.
4. Salt can be added to the solution to increasing the tolerance of the enzyme to heat.
5. The pH of the solution should be checked regularly to keep it correct.
6. Dummy rollers should be used to increase the speed at which enzyme solution enters the fabric.
7. The equipment used in copper cannot be used for desizing.
8. The desized fabric should be piled in such a way that its heat is not lost and air cannot enter it.
9. Clothes should be washed with hot water.
