Effects of Irradiation on the Structure-activity Relationship of Konjac Glucomannan Molecular Chain Membrane  

作　　者：吴春华 彭述辉 温成荣 王丽霞 熊波 刘雅楠 范琳琳 姚闽娜 庞杰 

机构地区：[1]College of Food Science, Fujian Agriculture and Forestry University [2]Department of Food Science, Guangzhou City Polytechnic,

出　　处：《Chinese Journal of Structural Chemistry》2012年第6期857-866,共10页结构化学（英文）

基　　金：supported by the National Natural Science Foundation of China(30871749,30901004 and 31071518);the Natural Science Foundation of Fujian Province(2011J01285);the Key Research Project of Guangdong Province(2010B080701079);the doctoral program of higher education of the specialized research fund for the project funded by the United(20113515110010);the Yangcheng Scholars Technology Project of Guangzhou(10B005D);the Fuzhou Science and Technology Plan Project(2011-N-44)

摘　　要：To know the effects of irradiation on the konjac glucomannan （KGM） molecular chain membrane, KGM membrane solution was treated with the irradiation dose of 0-20 kGy in this study, and the structure and properties of KGM membrane were analyzed with Infrared spectrum, Raman spectrum, X-ray, SEM scanning and so on. The results revealed that the effects of different irradiation doses on the KGM molecular chain structure were different. Higher irradiation dose （20 kGy） resulted in partial damage against KGM membrane crystal structure, and there was no obvious change for the amorphous structure; with membrane property test, the tensile strength of KGM membrane gradually increased with the increase of irradiation dose and its elongation at break reduced, but these changes were not significant, WVP value reduced; with SEM, the membrane surface treated with irradiation was smoother even than the membrane without treatment. In addition, when increasing the irradiation dose, membrane surface became more even, and arrangement was more orderly and compact. KGM membrane nrooerties, and it is an ideal Irradiation modification could effectively improve the modification method.To know the effects of irradiation on the konjac glucomannan （KGM） molecular chain membrane, KGM membrane solution was treated with the irradiation dose of 0-20 kGy in this study, and the structure and properties of KGM membrane were analyzed with Infrared spectrum, Raman spectrum, X-ray, SEM scanning and so on. The results revealed that the effects of different irradiation doses on the KGM molecular chain structure were different. Higher irradiation dose （20 kGy） resulted in partial damage against KGM membrane crystal structure, and there was no obvious change for the amorphous structure; with membrane property test, the tensile strength of KGM membrane gradually increased with the increase of irradiation dose and its elongation at break reduced, but these changes were not significant, WVP value reduced; with SEM, the membrane surface treated with irradiation was smoother even than the membrane without treatment. In addition, when increasing the irradiation dose, membrane surface became more even, and arrangement was more orderly and compact. KGM membrane nrooerties, and it is an ideal Irradiation modification could effectively improve the modification method.

关 键 词：KGM molecular chain irradiation modification membrane structure MECHANICALPROPERTY 

分 类 号：O631.3[理学—高分子化学]