Automated on-line noninvasive optical glucose monitoring in a cell culture system

Byungjo Jung, Seungjun Lee, In Hong Yang, Theresa Good, Gerard L. Cote

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


Current techniques for monitoring glucose concentration during cell culture are invasively performed using an off-line measurement system. Even though in situ or ex situ analyte sensors have been tried for on-line measurements, they suffer from difficulties including the inability to keep them sterile, their limited lifetime, and their lack of stability. In this research an alternative optical noninvasive on-line monitoring system based on near-infrared absorbance spectroscopy was developed to measure glucose concentration of cell culture media in a rotary cell culture system. The system included an automatic sampling component controlled by a LabVIEW program and a high-throughput fiber coupling component connected to a Fourier transform near-infrared spectrometer. The effectiveness of the system was investigated via noninvasive on-line measurement of glucose absorbance spectra in the cell culture media during T-cell culture. Glucose absorbance spectra were collected in the spectral range of 2.0 to 2.5 μm. Partial least-squares regression was employed to build a successful multivariate calibration model. The standard error of prediction and mean percent error for glucose were 7.7 mg/dL and 1.0%, respectively. The successful results represent an important step in the development of a noninvasive, closed-loop, system for monitoring analytes in cell culture.

Original languageEnglish (US)
Pages (from-to)51-57
Number of pages7
JournalApplied Spectroscopy
Issue number1
StatePublished - Jan 1 2002


  • Bioprocess monitoring
  • Fiber-optic sensors
  • Glucose
  • On-line
  • Partial least-squares
  • RCCS
  • Rotary cell culture system
  • Spectroscopy

ASJC Scopus subject areas

  • Instrumentation
  • Spectroscopy


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