Changes in morphology of Paecilomyces japonica and their effect on broth rheology during production of exo-biopolymers
- Authors
- Sinha, J.; Bae, J.T.; Park, J.P.; Kim, K.H.; Song, C.H.; Yun, J.W.
- Issue Date
- 2001
- Citation
- Applied Microbiology and Biotechnology, v.56, no.1-2, pp 88 - 92
- Pages
- 5
- Journal Title
- Applied Microbiology and Biotechnology
- Volume
- 56
- Number
- 1-2
- Start Page
- 88
- End Page
- 92
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/75280
- DOI
- 10.1007/s002530100606
- ISSN
- 0175-7598
1432-0614
- Abstract
- The influence of Paecilomyces japonica pellet morphology on fermentation broth rheology and exo-biopolymer production was investigated in a 5-1 jar fermenter. Rapid formation of pellets was observed after the first day of fermentation; and these slowly increased in size and roughness. This, together with the increase in biomass concentration, altered the transport characteristics and broth rheology towards a pseudoplastic nature which, in turn, influenced cell growth and exo-biopolymer production. At mild agitation, high aeration and optimum substrate concentration, pellets were the most predominant morphological form, compared with free mycelia. The broth rheology showed pseudoplastic behavior; and the fungal morphology was closely related to the rheological properties. © Springer-Verlag 2001.
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