Degumming process is a fundamental process for silk yam and silk fabric finishing. The main objective is scouring the substrate such as silk gum (sericin) wax and fatty acid from silk fiber. The principle of degumming process is destroying the peptide linkage of amino acid in sericin structure into a small molecule which is soluble in water. The hydrolysis reaction performed by acid alkaline enzyme surfactant as soap and high pressure steam process. The conventional methods favor degumming with soap and sodium carbonate. This process has a problem on the surface area of silk. Proteolytic enzymes can answer this problem but it seldom use because of a specific condition and high cost. For this reason the insteading of papain enzyme from dry latex of Carica payapa Linn. was decided to use for silk degumming at any condition study. This research was concerned with the silk degumming using papain enzyme form dry latex of Carica payapa Linn. The degumming process was performed at the temperature vary from 55 -85 degree Celsius time fromlO to 40 minutes and the amount of dry latex ranging from 0 to 4% owf in order to study the suitable condition for degumming and surface morphology. The efficiency of degumming process was evaluated by determination of tensile strength and stainiqgJest with dire~~ dyes (C.1. Direct Red 80~StaIDing result.will be opposed to degumming efficiency. The result was revealed; the appropriate conditions for silk degumming with dry Carica payapa Linn. s latex were recommended as follows : the amount of dry latex solution of 4 % owf at 75 degree Celsius for 30 minutes. The degummed fibers leaves lustrous soft and surface smooth. This condition does not have effect to tensile strength and fiber surface.

Degumming process is a fundamental finishing process for silk yarn and silk fabric. The main objective is scouring the substrate such as silk gum (sericin) wax and some impurities from silk fiber. The principle of degumming process is breaking the peptide linkage of amino acid in sericin structure into a small molecule which is soluble in water. The hydrolysis reaction performed by acid and alkaline but they have a big problem on the surface area of silk. Proteolytic enzyme be used to solve this problem but it has some disvantages such as it was using a specific condition and expensive. For this reason this research chooses papain enzyme form dried latex of Carica payapa Linn. to degum the raw silk. The efficiency of degumming process was evaluated by determination of tensile strength and staining test with direct dyes (C.I. Direct Red 80). The result was revealed; the appropriate conditions for silk degumming with dried Carica payapa Linn.’s latex be recommended as follows: the amount of dried latex solution of 4 % owf at 75 degree Celsius for 30 minutes in this condition was not harm to strength and fiber surface. The degummed fibers still had lustrous soft and smooth surface.

Degumming process is a fundamental process for silk yarn and silk fabric finishing. The main objective is scouring the substrate such as silk gum (sericin) wax and fatty acid from silk fiber. The principle of degumming process is breaking the peptide linkage of amino acid in sericin structure into a small molecule which is soluble in water. The hydrolysis reaction is performed by acid and alkaline but they have a big problem on the surface area of silk. Proteolytic enzyme is used to solve this problem but it has some disvantages such as using a specific condition and high price. For this reason papain enzyme form dry latex of Carica papaya Linn. is choren to degum the raw silk. Papain is an enzyme which has a good protein digestion. The efficiency of degumming process was evaluated by determination of tensile strength and staining test with direct dyes (C.I. Direct Red 80). The result revealed that the appropriate conditions for silk degumming with dry Carica papaya Linn.๛s latex should be recommended as follows: the amount of dry latex solution of 4% owf at 75 ฐC for 30 minutes at neutral condition (pH ≈7). The degummed fibers had lustrous soft and smooth surface. The fiber strength and surface were not damaged on this process.