Different experimental approaches for Fourier-transform infrared spectroscopy applications in biology and biotechnology: A selected choice of representative results.

Fourier transform infrared (FTIR) spectroscopy is a powerful tool for analyzing the biochemical properties of biological samples such as proteins, cellular materials, and tissues. It provides objective information on samples and has been adopted in many research areas of biomedical and biotechnological interest. FTIR spectroscopy can be performed using different approaches at the macro and micro levels allowing the examination of an incredibly broad class of materials. However, it has become evident that the choice of proper spectra acquisition geometries and the modalities of sample preparation in FTIR spectroscopy analysis require special consideration, especially for certain classes of materials such as cells and tissues. In the present paper, we described the different procedures used for preparing and analyzing different types of biological and biotechnological samples when the more largely available approaches are employed using a commercial FTIR spectrometer. Some basic aspects of data analysis procedures are presented in an Appendix. A certain number of our previous experimental results are reported for demonstrating once more the versatility and the potentiality of FTIR spectroscopy.