摘要
应用热分析法对植物残体腐解过程中微生物菌体热特性进行了研究，结果表明，各类菌体的ＤＴＡ、ＤＴＧ曲线均有相似的热效应峰和失重峰，显示菌体物质组成上的共性，同时也表现出各自的热解特异性。细菌ＤＴＡ曲线在２７６～２９５℃有一肩状峰；真菌ＤＴＡ曲线在１５４～１９０℃有一小吸热特征峰。放线菌ＤＴＧ曲线的第２失重峰突出，失重率大；细菌ＤＴＧ曲线第２失重峰则由分裂为双峰组成。菌体红外光谱特征佐证了ＤＴＡ、ＤＴＧ曲线的结论，并明确了该曲线中有关峰对应的菌体物质组成，也显示了各类菌体红外光谱的差异。
The preliminary research on pyrolytic characteristics of microbial cells by thermal analy-sis method showed that DTA and DTG curves of microbial cells of each group had similer peak of heat effect and peak of weight loss,therefore,it showed that the substance con-stituent of microbial cells had the common characteristics.The result showed that DTA and DTG curves of the microbial cells of each group had a speciality.DTA curves of bacteria had a characteristics shoulder-shaped peak at 276～295 ℃. DTA curves of fungi had a small endothermic characteristics peak at 154～190 ℃,the second peak of weight loss for DTG curves of actinomycetes was outstand-ing and the ratio of weight loss was large,the second peak of weight loss for DTG curves of bacteria consisted of split double peak.The characteristics of infrared spectra of microbial cells proved the conclusion of thermal analysis and appeared the substance constituent of microbial cells and the difference of in-frared spectra of each microbial group.
出处
《西北农业学报》
CSCD
1994年第3期75-81,共7页
Acta Agriculturae Boreali-occidentalis Sinica
基金
博士点科研基金
关键词
微生物菌体
植物残体
热分析
Microbial cells
Plant residues
Thermal analysis
