Estimation of Growth Yield and Maintenance Coefficient of Plant Cell Suspensions

Sherry Rae Schnapp, Wayne R. Curtis, Ray A. Bressan, Paul M. Hasegawa

Research output: Contribution to journalArticlepeer-review

22 Scopus citations


Methodology is presented for the determination of growth yield (Yg) and maintenance coefficient (m) for carbon utilization of plant cells grown in suspension culture. Estimation of Yg and m requires measurements of specific growth rate (µ) and specific rate of substrate uptake (q) at different growth limiting substrate concentrations. Batch culture of tobacco cells did not permit evaluation of Yg and m because µ is constant and maximal during most of the growth cycle. In batch culture, the period of declining specific growth rate is extremely brief because of the rapid transition from logarithmic growth to stationary phase. This occurs because the Km for growth is relatively small compared to the initial sucrose concentration. Thus, when the substrate level reaches the Km, the large mass of cells rapidly depletes the remaining substrate. In contrast, semicontinuous culture facilitates the determination of Yg and m because various steady‐state growth rates can be achieved. Mathematical expressions were developed to determine the effective values of µ and q over the semicontinuous replacement interval. The validity of this approach was verified by conducting simulations using experimentally determined parameters.

Original languageEnglish (US)
Pages (from-to)1131-1136
Number of pages6
JournalBiotechnology and bioengineering
Issue number10
StatePublished - Dec 5 1991

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Bioengineering
  • Applied Microbiology and Biotechnology


Dive into the research topics of 'Estimation of Growth Yield and Maintenance Coefficient of Plant Cell Suspensions'. Together they form a unique fingerprint.

Cite this