Abstract:

Bio-degumming of mulberry fiber was performed with bioenzyme KDN-T01F, and the factors affecting degumming were investigated, using the amount of residual gum as the index of the result of degumming. Single-factor analysis was adopted to find out the parameters range during degumming, and then orthogonal experiment was used to determine the optimal parameters for bio-degumming, that is, the temperature is 53℃, the concentration of bioenzyme solution is 14g/L, pH =9, liquor ratio is 1:30 and treating time is 12h. Under these conditions, the amount of residual gum reduced from 68.04% to 30.36%. After bio-degumming followed by chemical degumming，the amount of residual gum is as low as 3.88%. This indicates that bioenzyme - chemical degumming method is good for extraction of mulberry fiber.