REGULATION OF APPARENT VISCOSITY AND O-2 TRANSFER-COEFFICIENT BY OSMOTIC-PRESSURE IN CELL-SUSPENSIONS OF PANAX NOTOGINSENG

Authors
ZHANG YH WANG HQ LIU S YU JT ZHONG JJ
Citation
Yh. Zhang et al., REGULATION OF APPARENT VISCOSITY AND O-2 TRANSFER-COEFFICIENT BY OSMOTIC-PRESSURE IN CELL-SUSPENSIONS OF PANAX NOTOGINSENG, Biotechnology letters, 19(10), 1997, pp. 943-945
Citations number
14
Categorie Soggetti
Biothechnology & Applied Migrobiology
Journal title
Biotechnology letters → ACNP
ISSN journal
01415492
Volume
19
Issue
10
Year of publication
1997
Pages
943 - 945
Database
ISI
SICI code
0141-5492(1997)19:10<943:ROAVAO>2.0.ZU;2-4
Abstract
As the dry weight to fresh weight ratio of Panax notoginseng cells is related to the medium sugar concentration, the osmotic pressure can be increased by adding glucose to change cells' water content. When the apparent viscosity was decreased from 80.1 to 10.2 cp the surface O-2 transfer coefficient (K(L)a) increased from 4.80 to 5.68 h(-1) by addi ng 1.23 g glucose to 50 ml culture medium after 24 h.