N-3 PUFA PRODUCTIVITY IN CHEMOSTAT CULTURES OF MICROALGAE

被引：11

作者：

GRIMA, EM ^{[1
]}

PEREZ, JAS ^{[1
]}

CAMACHO, FG ^{[1
]}

SANCHEZ, JLG ^{[1
]}

ALONSO, DL ^{[1
]}

机构：

[1] CAMPUS UNIV ALMERIA,DEPT GENET,E-04071 ALMERIA,SPAIN

来源：

APPLIED MICROBIOLOGY AND BIOTECHNOLOGY | 1993年 / 38卷 / 05期

关键词：

D O I：

暂无

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：

Eicosapentaenoic (EPA) and docosahexaenoic (DHA) acid productivities from chemostat cultures of an isolate of Isochrysis galbana have been studied. The productivities reached in the interval of dilution rates between 0.0295 h-1 and 0.0355 h-1 were 1.5 mg . l-1 . h-1 for lipids, 300 mug . l-1 . h-1 for EPA and 130 mug . l-1 . h-1 for DHA. Furthermore, light attenuation by mutual shading, and agitation speed influences on growth and fatty acid composition were analysed. A model relating steady-state dilution rates to internal average light intensity has been proposed, the parameter values of which obtained by non-linear regression were: maximum specific growth rate (mu(max) = 0.0426 h-1; the affinity of cells to light (I(k)) = 10. 92 W.m-2; the exponent (n) = 5.13; regression coefficient (r2) = 0.9999.

引用

页码：599 / 605

页数：7

共 30 条

[1] ISOLATION OF CLONES OF ISOCHRYSIS-GALBANA RICH IN EICOSAPENTAENOIC ACID [J].