60COγ辐照对芒草微观结构变化研究

采用X射线衍射法（XRD），傅里叶变换红外光谱法（FI—TR）以及电镜扫描（SEM）对芒草^60COγ辐照后微观结构的变化进行分析。芒草经^60COγ射线辐照预处理后，纤维素和半纤维素降解程度较大，降解率在2000kGy时分别达到53．28％和95．76％。微观结构分析结果表明，辐照使纤维素及半纤维素分子内和分子间的化学键发生断裂，纤维素的结晶度逐渐变小，纤维变得不完整，纤维表面出现明显分层脱落现象，基本失去原有的形貌特征。...

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Published in江西农业学报 Vol. 25; no. 5; pp. 8 - 12
Main Author 蒋怡乐 李清明 苏小军 熊兴耀 王丽婷 王克勤
Format Journal Article
LanguageChinese
Published 湖南农业大学食品科技学院,湖南长沙,410128%湖南农业大学作物种质创新与资源利用国家重点实验室培育基地,湖南长沙,410128%湖南省原子能农业应用研究所,湖南长沙,410125 2013
Subjects
60COγ辐照
X射线衍射法
傅里叶变换红外光谱法
电镜扫描
芒草
傅里叶变换红外光谱法
X射线衍射法
芒草
60Coγ辐照
电镜扫描
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ISSN1001-8581

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Summary:采用X射线衍射法（XRD），傅里叶变换红外光谱法（FI—TR）以及电镜扫描（SEM）对芒草^60COγ辐照后微观结构的变化进行分析。芒草经^60COγ射线辐照预处理后，纤维素和半纤维素降解程度较大，降解率在2000kGy时分别达到53．28％和95．76％。微观结构分析结果表明，辐照使纤维素及半纤维素分子内和分子间的化学键发生断裂，纤维素的结晶度逐渐变小，纤维变得不完整，纤维表面出现明显分层脱落现象，基本失去原有的形貌特征。
Bibliography:36-1124/S
Chinese silvergrass; ^60COγ irradiation; XRD; FT-IR; SEM
JIANG Yi - le , LI Qing -ming , SU Xiao - jun, XIONG Xing - yao, WANG Li - ting , WANG Ke - qin （1. College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China; 2. Breeding Base, State Key Laboratory of Crop Germplasm Innovation and Resource Utilization, Hunan Agricultural University, Changsha 410128, China; 3. Hunan Institute of Atomic Energy Application in Agriculture, Changsha 410125, China）
The X -ray diffraction （XRD）, infrared spectroscopy （FT- IR）, and scan electron microscopy （SEM） were used to analyze the microstructure changes of Chinese silvergrass treated by ^60COγ/ irradiation. After Chinese silvergrass was treated by ^60COγ/irradiation, the degradation of its cellulose and hemiceUulose was strengthened significantly, and their degradation rate at 2000 kGy irradiation reached 53.28% and 95.76%, respectively. Microstructure changes showed that the irradiation caused the cleavage of intramolecular and
ISSN:1001-8581