Preliminary application of degumming bacterium in scouring of flax roves

An investigation of scouring of flax roves with pseudomonas sp DA10(CGMCC No.3851) was carried out.The effect of dosage of fermentation liquid,initial pH,scouring temperature and treatment time on the scouring were studied.The results indicated that flax roves treated with 150 mL fermentation liquid at 40 ℃ and pH 9 for about 7.5 h could gain satisfied result.Due to the mild effect of bacteria scouring,introduction of pretreatments into the process can greatly improve bacteria scouring effect with enhanced fiber splitting and fiber strength,in particular,when the low-concentration alkali-bacteria combination system is used.SEM examination indicated that flax roves treated by bacteria scouring achieved fiber splitting,but with gummy residuals on the fibers,while the fibers treated by the alkali-bacteria combination scouring system exhibited a complete removal of gummy materials.