Comparative study of structural properties of trehalose water solutions by neutron diffraction, synchrotron radiation and simulation

Cesàro, Attilio; Magazù, V.; Migliardo, F.; Sussich, Fabiana; Vadalá, M.

doi:10.1016/j.physb.2004.03.098

Cited by 13 publications

(13 citation statements)

References 10 publications

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“…As far as the hydrated samples are concerned, in the present work we address the attention to the OH stretching band, which interests the frequency range of 2700-3900 cm −1 . In particular, the FTIR spectra are observed as a function of time ( Figure 5), and then deconvoluted into Gaussian components; finally, their time dependence is discussed [49][50][51][52][53][54][55][56][57]. For a comparison, the spectral profiles were normalized.…”

Section: Analysis and Discussionmentioning

confidence: 99%

Self-Assembly Processes in Hydrated Montmorillonite by FTIR Investigations

Caccamo

Mavilia

et al. 2020

Materials

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Experimental findings obtained by FTIR and Raman spectroscopies on montmorillonite-water mixtures at three concentration values are presented. To get some insight into the hydrogen bond network of water within the montmorillonite network, FTIR and Raman spectra have been collected as a function of time and then analyzed following two complementary approaches: An analysis of the intramolecular OH stretching mode in the spectral range of 2700–3900 cm−1 in terms of two Gaussian components, and an analysis of the same OH stretching mode by wavelet cross-correlation. The FTIR and Raman investigations have been carried as a function of time for a montmorillonite-water weight composition (wt%) of 20–80%, 25–75%, and 35–65%, until the dehydrated state where the samples appear as a homogeneous rigid layer of clay. In particular, for both the FTIR and Raman spectra, the decomposition of the OH stretching band into a “closed” and an “open” contribution and the spectral wavelet analysis allow us to extract quantitative information on the time behavior of the system water content. It emerges that, the total water contribution inside the montmorillonite structure decreases as a function of time. However, the relative weight of the ordered water contribution diminishes more rapidly while the relative weight of the disordered water contribution increases, indicating that a residual water content, characterized by a highly structural disorder, rests entrapped in the montmorillonite layer structure for a longer time. From the present study, it can be inferred that the montmorillonite dehydration process promotes the layer self-assembly.

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Section: Analysis and Discussionmentioning

confidence: 99%

Self-Assembly Processes in Hydrated Montmorillonite by FTIR Investigations

Caccamo

Mavilia

et al. 2020

Materials

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“…In the presence of trehalose water molecules are arranged in a particular configuration, which avoids ice formation, so preserving biomolecules from damage due to freezing and cooling. Addition of trehalose, in respect to maltose and especially sucrose, completely destroys the tetrahedral intermolecular network of water, which by lowering the temperature would give rise to ice (Wang & Haymet, 1998;Magazù et al, 2005;Magazù et al, 2008;Cesaro et al, 2004;Magazù et al, 2007;Uchida et al, 2007;Magazù et al, 2012). Also, the study of the dynamical properties of trehalose water mixtures has shown that the diffusion of water is strongly affected by trehalose and that trehalose and water form a unique entity, creating a rigid environment where biomolecules can be protected and which have superior structural resistance to thermal stress (Magazù et al, 2012).…”

Section: Tablementioning

confidence: 99%

“…Maltose and trehalose are less sweet than the sucrose and previous studies have shown a positive effect of these sugars on the preservation of compounds such as polyphenols. In addition, it has been proven that sugars are behaving differently at low temperature and that behavior is related to the structure of the disaccharides (Wang & Haymet, 1998;Magazù, Migliardo, & RamirezCuesta, 2005;Magazù, Migliardo, & Telling, 2008;Cesaro, Magazù, Migliardo, Sussich, & Vadal a, 2004;Magazù, Migliardo, & RamirezCuesta, 2007;Uchida, Nagayama, Shibayama, & Gohara, 2007;Magazù, Migliardo, Gonzalez, Mondelli, Parker, & Vertessy 2012). Chosen disaccharides are isomers and were used for preparation of the freeze-dried sour cherry puree to investigate their influence on phenolic compounds and antioxidant potential.…”

Section: Introductionmentioning

confidence: 99%

Phenolics and antioxidant activity of freeze-dried sour cherry puree with addition of disaccharides

Lončarić

Pichler

Trtinjak

et al. 2016

LWT

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“…From the molecular point of view, the manifold aspects of the bioprotective function of trehalose, which can explain its ubiquity, have been investigated in deep detail by using complementary spectroscopic techniques covering very wide space and time ranges [ 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 ]. The whole body of the collected data pointed out the fundamental role played by the interaction of trehalose with water.…”

Section: Bioprotection Mechanisms and Extreme Conditionsmentioning

confidence: 99%

Molecular Mechanisms of Survival Strategies in Extreme Conditions

Magazù

Migliardo

González

et al. 2012

Life

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Today, one of the major challenges in biophysics is to disclose the molecular mechanisms underlying biological processes. In such a frame, the understanding of the survival strategies in extreme conditions received a lot of attention both from the scientific and applicative points of view. Since nature provides precious suggestions to be applied for improving the quality of life, extremophiles are considered as useful model-systems. The main goal of this review is to present an overview of some systems, with a particular emphasis on trehalose playing a key role in several extremophile organisms. The attention is focused on the relation among the structural and dynamic properties of biomolecules and bioprotective mechanisms, as investigated by complementary spectroscopic techniques at low- and high-temperature values.

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Comparative study of structural properties of trehalose water solutions by neutron diffraction, synchrotron radiation and simulation

Cited by 13 publications

References 10 publications

Self-Assembly Processes in Hydrated Montmorillonite by FTIR Investigations

Self-Assembly Processes in Hydrated Montmorillonite by FTIR Investigations

Phenolics and antioxidant activity of freeze-dried sour cherry puree with addition of disaccharides

Molecular Mechanisms of Survival Strategies in Extreme Conditions

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