RESEARCH ARTICLE


Experimental Study of Thermal Restraint in Bio-Protectant Disaccharides by FTIR Spectroscopy



S. Magazù1, 2, *, E. Calabrò1, M.T. Caccamo1, 2
1 Department of Mathematical and Informatics Sciences, Physical Sciences and Earth Sciences of Messina University, Viale Ferdinando Stagno D' Alcontres 31, 98166 Messina, Italy
2 Istituto Nazionale di Alta Matematica “F. Severi” – INDAM - Gruppo Nazionale per la Fisica Matematica – GNFM, Messina, Italy


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© 2018 Magazù et al.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: (https://creativecommons.org/licenses/by/4.0/legalcode). This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the Department of Mathematical and Informatics Sciences, Physical Sciences and Earth Sciences of Messina University, Viale Ferdinando Stagno D' Alcontres 31, 98166 Messina, Italy; Tel: +39 090 6765025; E-mail: smagazu@unime.it


Abstract

Background:

In the present paper, InfraRed (IR) spectra on water mixtures of two homologous disaccharides, i.e. sucrose and trehalose, as a function of temperature have been collected.

Methods:

In particular, IR spectra were registered, in the spectral range from 4000 cm-1 to 400 cm-1, to investigate the thermal response of the water mixtures of two homologous disaccharides, through positive thermal scans, i.e. by increasing the temperature from the value of 25°C to the value of 50°C. The OH-stretching region has been analyzed by means of two simple and straightforward procedures, i.e. by evaluating the shift of the intramolecular OH stretching center frequency and the Spectral Distance (SD).

Result and Conclusion:

Both the analyses indicate that trehalose water mixture have a higher thermal response than that of the sucrose-water mixture.

Keywords: Sucrose, Trehalose, Bio-protection, Temperature, FTIR spectroscopy, Infrared.