Imaging and thermal studies of wheat gluten/poly(vinyl alcohol) and wheat gluten/thiolated poly(vinyl alcohol) blends

Biomacromolecules
Jing DongAlexandru D Asandei

Abstract

The morphology of wheat protein (WG) blends with polyvinyl alcohol (PVA) and respectively with thiolated polyvinyl alcohol (TPVA) was investigated by atomic force (AFM) and transmission electron microscopy (TEM) as well as by modulated dynamic scanning calorimetry (MDSC). Thiolated additives based on PVA and other substrates were previously presented as effective means of improving the strength and toughness of compression molded native WG bars via disulfide-sulfhydryl exchange reactions. Consistent with our earlier results, AFM and TEM imaging clearly indicate that the addition of just a few mole percent of thiol to PVA was sufficient to dramatically change its compatibility with wheat protein. Thus, TPVA is much more compatible with WG and phase separates into much smaller domains than in the case of PVA, although there are still two phases in the blend: one WG-rich phase and another TPVA-rich phase. The WG/TPVA blend has phase domains ranging in size from 0.01 to 0.1 microm, which are roughly 10 times smaller than those of the WG/PVA blend. MDSC further illustrates the compatibilization of the protein with TPVA via the dependence of the transition temperatures on composition.

References

Jul 1, 1992·Ultramicroscopy·N H ThomsonP R Shewry
Oct 1, 1992·International Journal of Biological Macromolecules·M T KalichevskyJ M Blanshard
Mar 1, 1991·Zeitschrift Für Lebensmittel-Untersuchung Und -Forschung·P KöhlerH Wieser
Apr 1, 1995·International Journal of Biological Macromolecules·T R NoelA S Tatham
Jun 1, 1995·Zeitschrift Für Lebensmittel-Untersuchung Und -Forschung·B KeckH Wieser
Nov 24, 1999·Journal of Agricultural and Food Chemistry·M PouplinN Gontard
Dec 22, 1999·Journal of Agricultural and Food Chemistry·T J McMasterA S Tatham
Jun 29, 2000·Biochemical and Biophysical Research Communications·K MitsuiA Ikai
Dec 7, 2000·Journal of Electron Microscopy·T OhtaniT Maekawa
Feb 24, 2001·Carbohydrate Research·A A BakerW Helbert
Jan 5, 1963·Nature·C A MAURITZEN, P STEWART
Nov 6, 2003·International Journal of Biological Macromolecules·J Szymońska, F Krok
Jul 13, 2004·Biomacromolecules·Dara L WoerdemanChristopher J G Plummer
Jul 13, 2004·Biomacromolecules·Michael J RidoutVictor J Morris
May 10, 2005·Biomacromolecules·Xiaoqing ZhangEleni Lourbakos
Oct 10, 2006·Biomacromolecules·Rebecca M DicharryRichard S Parnas

❮ Previous
Next ❯

Citations

Mar 12, 2016·International Journal of Pharmaceutics·Wongsakorn SuchaoinAndreas Bernkop-Schnürch
Jul 10, 2012·International Journal of Biological Macromolecules·Rosane M D SoaresValdir Soldi
Feb 10, 2010·Biomacromolecules·Bert LagrainJan A Delcour

❮ 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.