Structure and dynamics of flour by solid state NMR: effects of hydration and wheat aging

Biomacromolecules
Lucia CalucciGiulia Mollica

Abstract

The effects of accelerated aging of wheat seeds on structural and dynamic properties of dry and hydrated (ca 10 wt % H(2)O) flour at a molecular level were investigated by several high and low resolution solid-state NMR techniques. Identification and characterization of domains with different mobility was performed by (13)C direct excitation (DE) and cross-polarization (CP) magic angle spinning (MAS), as well as by (1)H static and MAS experiments. (1)H spin-lattice relaxation times (T(1) and T(1)(rho)) measurements were carried out to investigate molecular motions in different frequency ranges. Experimental data show that the main components of flour (starch and gluten proteins) are in a glassy phase, whereas the mobile fraction is constituted by lipids and, in hydrated samples, absorbed water. A lower proportion of rigid domains, as well as an increased dynamics of all flour components are observed after both seeds aging and flour hydration. Linear average dimensions between 20 and 200 A are estimated for water domains in hydrated samples.

References

Jan 26, 2000·Plant Foods for Human Nutrition·Z U Rehman, W H Shah
Sep 5, 2002·Journal of Agricultural and Food Chemistry·Luciano GalleschiMaurizio Zandomeneghi
Sep 6, 2003·International Journal of Biological Macromolecules·Lucia CalucciSilvia Ghiringhelli

❮ Previous
Next ❯

Citations

Dec 21, 2013·Journal of Agricultural and Food Chemistry·Leayen LamAndré J Simpson
Oct 22, 2010·Journal of Magnetic Resonance·Barbara BlicharskaMagdalena Witek
Nov 21, 2008·Dental Materials : Official Publication of the Academy of Dental Materials·C M Fellows, G A Thomas
Feb 9, 2012·Magnetic Resonance in Chemistry : MRC·Peter S Belton
Apr 1, 2005·Solid State Nuclear Magnetic Resonance·V FerriniC A Veracini
Jan 18, 2006·International Journal of Pharmaceutics·G Di ColoM F Serafini
Jul 21, 2017·Journal of Agricultural and Food Chemistry·Blythe E Fortier-McGillAndré J Simpson
Feb 9, 2010·The Journal of Physical Chemistry. B·Marco GeppiSilvia Cappellozza
Dec 4, 2010·Journal of Agricultural and Food Chemistry·Xiaowen LvYuchang Qin
Sep 30, 2008·Journal of Agricultural and Food Chemistry·Fabio Bertocchi, Maurizio Paci

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.