Abstract
The development of robust and feasible sensors for assessing biochemical processes is crucial to improve the productivity and to reduce the time and costs in industries. In this paper, the utilization of an optical fiber reflectometer for measuring fermentation reactions is demonstrated. The single-mode fiber probe is placed in the tested sample, so the reflected light is analyzed in terms of average intensity and dynamic light scattering. Firstly, the system was validated by assessing the concentration in a biomass solution, yielding 1.89×104 L.s−1.g−1 sensitivity. Next, the sensor was utilized for dynamically monitoring the alcoholic and the oxidative fermentations, with the further comparison to pH measurements. It was possible to retrieve the theoretical reaction curves from the intensity and light scattering data, including the growth and stationary phases, making it possible to refine mathematical models on the optimization of biochemical processes control loops.
© 2018 The Author(s)
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