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Liquid Perfluorochemicals as Flexible and Efficient Gas Carriers Applied in Bioprocess Engineering: An Updated Overview and Future Prospects

Pilarek M.

Chemical and Process Engineering

2014

Vol. 35, nr 4

463--487

Fully synthetic, biochemically inert and water-immiscible liquid perfluorochemicals (PFCs) are recognised as flexible liquid carriers/scavengers of gaseous compounds (respiratory gases mainly, i.e. O2 and CO2) and increasingly applied in bioprocess engineering. A range of unmatched physicochemical properties of liquid PFCs, i.e. outstanding chemo- and thermostability, extremely low surface tension, simultaneous hydro- and lipophobicity, which result from carbon chain substitution with fluorine atoms (the most electronegative chemical element) and the presence of intramolecular C–F bonds (the strongest single bond known in organic chemistry) have been described in detail. Exceptional propensity to solubility of respiratory gases in liquid perfluorinated compounds has been widely discussed. Advantages and disadvantages of bioprocess applications of liquid PFCs in the form of a pure PFC as well as in an emulsified form have been pointed out. A liquid PFC-mediated mass transfer intensification in various types of microbial, plant cell and animal cell culture systems: from miniaturised microlitre-scale cultures, via biomaterial-based scaffolds containing culture systems, to litre-scale bioreactors, has been reviewed and elaborated on bearing in mind the benefits of bioprocesses.

Wykorzystanie metody enzymatycznej do badania rozpuszczalności tlenu w ciekłych perfluorozwiązkach

Pilarek M., Zygmuntowicz J., Dąbkowska K., Moniuk W.

Inżynieria i Aparatura Chemiczna

2013

Nr 5

467--468

Opracowano metodę enzymatyczną pomiaru stężenia 02 w perfluorodeka- linie (PFD) poprzez wykorzystanie układu następczych reakcji katalizowanych przez oksydoreduktazy. Metodyka pozwala określić stężenie 02 w próbie PFD o objętości rzędu mikro litrów. Wyznaczono wartości objętościowych współczynników wnikania masy w fazie gazowej i ciekłej w dwufazowym układzie PFD-tlen/powietrze.

An enzymatic method for the determination of 02 solubility in perfluoro- decalin (PFD) and based on the system of two reactions catalysed by oxi- doreductases was elaborated. The proposed method enables one to determine the 02 concentration in PFD microliter-scale samples. Volumetric mass transfer coefficients in gas and liquid phases for the PFD-oxygen/air two-phase system were calculated.