In this paper, the aerobic metabolism mechanism of Aspergillus Niger （AS 3.3 50 ）, which is the most suitable bacteria for degumming kenaf fiber, is expounded, and macromolecular structure of pectin is also analyzed...In this paper, the aerobic metabolism mechanism of Aspergillus Niger （AS 3.3 50 ）, which is the most suitable bacteria for degumming kenaf fiber, is expounded, and macromolecular structure of pectin is also analyzed. The fracture position of the macromolecular chain of kenaf pectin and its outgrowth structure, affected by Endo-PG and Exo-PG are secreted by AS 3. 350 and explored in molecule scale. The optimal value of degumming parameters are fixed： temperature 34 - 36℃, time 48 - 50 h, pH 6.5 - 7.5. Compared with kenaf fibers obtained by natural method, the ones deguntmed by bio-enzymatic method possess of smoother surface, .better. Separation, less impairment and higher strength with. residual pectin percentage of 14.5 %.展开更多
基金Ministry of Education(No.03028)Fund Item of Liaoning Province(No.2050866)
文摘In this paper, the aerobic metabolism mechanism of Aspergillus Niger （AS 3.3 50 ）, which is the most suitable bacteria for degumming kenaf fiber, is expounded, and macromolecular structure of pectin is also analyzed. The fracture position of the macromolecular chain of kenaf pectin and its outgrowth structure, affected by Endo-PG and Exo-PG are secreted by AS 3. 350 and explored in molecule scale. The optimal value of degumming parameters are fixed： temperature 34 - 36℃, time 48 - 50 h, pH 6.5 - 7.5. Compared with kenaf fibers obtained by natural method, the ones deguntmed by bio-enzymatic method possess of smoother surface, .better. Separation, less impairment and higher strength with. residual pectin percentage of 14.5 %.
