8个菌株的纤维素分解能力比较研究

通过对羧甲基纤维素、滤纸和木薯渣的分解能力、产酶活性等指标比较嗜热侧孢霉、黑曲霉、康宁木霉、白腐菌等8株菌分解纤维素的能力.结果表明:这8株菌均具有较好的纤维素分解能力,其中康宁木霉、白腐菌、无花果曲霉水解圈效果明显；康宁木霉产纤维素酶能力比较稳定,且酶活性较高；康宁木霉、白腐菌、嗜热侧孢霉、无花果曲霉对滤纸和木薯渣的实际分解效果较好.固体发酵培养到第5天时,对粗纤维和纤维素分解率较高的依次为无花果曲霉(23.98％、20.76％)、康宁木霉(23.35％、20.22％)、白腐菌(23.08％、20.16％)；固体发酵培养到第10天时,对粗纤维分解率较高的是无花果曲霉(39.22％)、嗜热侧孢霉(36.39％)、米曲霉(35.11％),纤维素分解率较高的是嗜热侧孢霉(42.37％)、无花果曲霉(39.99％)、康宁木霉(38.97％).

Comparison of Cellulose Decomposing Abilities of Eight Microbial Strains

To compare the cellulose decomposing abilities of 8 strains,the decomposition capacities of carboxymethyl cellulose,filter paper and cassava residue and their activity were studied.The results showed that: the 8 strains had better cellulose decomposing ability,Trichoderma konigii,Phanerochaete chrysosporium and Aspergillus ficuum had obvious hydrolysis effect;Trichoderma konigii cellulase producing ability was relatively stable and high;Trichoderma konigii,Phanerochaete chrysosporium,Sporotrichum thermophile and Aspergillus ficuum had better decomposition effect on filter paper and the actual cassava residue.In the 5 d,crude fiber and cellulose degradation rate were higher by Aspergillus ficuum(23.98%,20.76%),Trichoderma konigii(23.35%,20.22%)and Phanerochaete chrysosporium(23.08%,20.16%)and in the 10 d,crude fiber degradation rate was higher by Aspergillus ficuum(39.22%),Sporotrichum thermophile(36.39%)and Aspergillus oryzae(35.11%).The cellulose degradation rate was higher by Sporotrichum thermophile(42.37%),Aspergillus ficuum(39.99%)and Trichoderma konigii(38.97%).