PRODUCTION OF CELLULOLYTIC ENZYMES FROM THE XYLARIA AND HYPOXYLON SPECIES OF XYLARIACEAE

被引:21
作者
WEI, DL
CHANG, SC
WEI, YH
LIN, YW
CHUANG, CL
JONG, SC
机构
[1] Division of Biology, National Yang-Ming Medical College, Taipei
[2] Department of Biochemistry, National Yang-Ming Medical College, Taipei
[3] Department of Mycology, American Type Culture Collection, Rockville, 20852, Maryland, Parklawn Drive
关键词
AVICELASE (EXOCELLULASE); CMCASE (ENDOCELLULASE); BETA-GLUCOSIDASE; XYLAIRACEOUS FUNGI;
D O I
10.1007/BF01195834
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Eighteen strains of xylariaceous fungi have been screened for higher activities of cellulolytic enzymes, Trichoderma reesei QM 9414 was also examined for comparison. Strains of Xylaria anisopleura and X. regalis had higher endocellulase (CMCase) and exocellulase (Avicelase) activities after 2 weeks' incubation. Hypoxylon stygium produced the highest.activity of beta-glucosidase 3 days after inoculation. The optimum pH for these cellulolytic enzymes was approx. 5.0 and the optimum temperatures ranged from 37 to 50-degrees-C. A mixed culture process using T. reesei QM 9414 and H. stygium was developed to obtain enhanced synthesis of cellulase. Beta-glucosidase activities in the mixed culture increased within 48 h when H. stygium was introduced after 24 h.
引用
收藏
页码:141 / 146
页数:6
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