The impact of konjac glucomannan on the physical and chemical stability of walnut oil‐in‐water emulsions coated by whey proteins

Plant-based polyphenols are increasingly being explored as functional ingredients in emulsified food systems. In this study, the effects of sesamol on the physical and chemical stability of flaxseed oil-in-water emulsions...

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Application of a Novel Instantized Glycerol Monooleate Ingredient in a Protein-Stabilized Oil-In-Water Emulsion

Foods ◽

10.3390/foods9091237 ◽

2020 ◽

Vol 9 (9) ◽

pp. 1237

Author(s):

Chia Chun Loi ◽

Graham T. Eyres ◽

Patrick Silcock ◽

E. John Birch

Keyword(s):

Oxidative Stability ◽

Whey Proteins ◽

Gas Chromatography Mass Spectrometry ◽

Water Emulsion ◽

Oil In Water ◽

Droplet Sizes ◽

Creaming Stability ◽

Oil In Water Emulsion ◽

The Impact ◽

Glycerol Monooleate

Glycerol monooleate (GMO), casein and whey proteins are surfactants that can stabilize emulsion systems. This study investigates the impact of instantized GMO powders on creaming stability and oxidative stability in protein-stabilized emulsions. Model emulsions with bulk GMO, two instantized GMO powders, and two controls (without GMO) were produced by microfluidization. The droplet size, ζ-potential, viscosity, and creaming index of the emulsions were measured, while oxidative stability was evaluated by analysis of volatile compounds during storage (28 days, 45 °C) using gas chromatography mass spectrometry. Emulsions with GMO produced smaller average droplet sizes (180.0 nm) with a narrower distribution (polydispersity index of 0.161) compared to the controls (197.6 nm, 0.194). The emulsion stability of instantized emulsions was as good as bulk GMO, which were both better than controls. Based on the relative abundance of 3-octen-2-one, 2,4-heptadienal isomer 2, and 3,5-octadien-2-one isomer 1, the oxidative stability of the instantized emulsions was not significantly different from controls; however, bulk GMO emulsion showed significantly lower stability than controls. Instantized GMO powders can successfully produce physically stable protein-stabilized emulsions with good oxidative stability in a convenient powdered format.

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THE IMPACT OF PHYSICAL AND CHEMICAL WEATHERING ON IRON SLAG FROM STANDISH, NY

10.1130/abs/2019am-339236 ◽

2019 ◽

Author(s):

Maria L. Leonard ◽

◽

Rachel M. Kelk ◽

Dori J. Farthing

Keyword(s):

Chemical Weathering ◽

Iron Slag ◽

Physical And Chemical ◽

The Impact

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Influence of Whey Protein Micro-Gel Particles and Whey Protein Micro-Gel Particles-Xanthan Gum Complexes on the Stability of O/W Emulsions

Polymers ◽

10.3390/polym13142301 ◽

2021 ◽

Vol 13 (14) ◽

pp. 2301

Author(s):

Man Zhang ◽

Bin Liang ◽

Hongjun He ◽

Changjian Ji ◽

Tingting Cui ◽

...

Keyword(s):

Oxidative Stability ◽

Whey Protein ◽

High Speed ◽

Xanthan Gum ◽

Physical Stability ◽

Theoretical Support ◽

Gel Particles ◽

Oil In Water ◽

The Stability ◽

The Impact

Appropriate pretreatment of proteins and addition of xanthan gum (XG) has the potential to improve the stability of oil-in-water (O/W) emulsions. However, the factors that regulate the enhancement and the mechanism are still not clear, which restricts the realization of improving the emulsion stability by directional design of its structure. Therefore, the effects of whey protein micro-gel particles (WPMPs) and WPMPs-XG complexes on the stability of O/W emulsion were investigated in this article to provide theoretical support. WPMPs with different structures were prepared by pretreatment (controlled high-speed shear treatment of heat-set WPC gels) at pH 3.5–8.5. The impact of initial WPC structure and XG addition on Turbiscan Indexes, mean droplet size and the peroxide values of O/W emulsions was investigated. The results indicate that WPMPs and XG can respectively inhibit droplet coalescence and gravitational separation to improve the physical stability of WPC-stabilized O/W emulsions. The pretreatment significantly enhanced the oxidative stability of WPC-stabilized O/W emulsions. The addition of XG did not necessarily enhance the oxidative stability of O/W emulsions. Whether the oxidative stability of the O/W emulsion with XG is increased or decreased depends on the interface structure of the protein-XG complex. This study has significant implications for the development of novel structures containing lipid phases that are susceptible to oxidation.

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Treated wastewater irrigation effects on soil hydraulic conductivity and aggregate stability of loamy soils in Israel

Journal of Hydrology and Hydromechanics ◽

10.1515/johh-2015-0010 ◽

2015 ◽

Vol 63 (1) ◽

pp. 47-54 ◽

Cited By ~ 23

Author(s):

Karsten Schacht ◽

Bernd Marschner

Keyword(s):

Hydraulic Conductivity ◽

Chemical Properties ◽

Aggregate Stability ◽

Treated Wastewater ◽

Soil Aggregate Stability ◽

Irrigation Effects ◽

Physical And Chemical ◽

The Impact

Abstract The use of treated wastewater (TWW) for agricultural irrigation becomes increasingly important in water stressed regions like the Middle East for substituting fresh water (FW) resources. Due to elevated salt concentrations and organic compounds in TWW this practice has potential adverse effects on soil quality, such as the reduction of hydraulic conductivity (HC) and soil aggregate stability (SAS). To assess the impact of TWW irrigation in comparison to FW irrigation on HC, in-situ infiltration measurements using mini disk infiltrometer were deployed in four different long-term experimental orchard test sites in Israel. Topsoil samples (0-10 cm) were collected for analyzing SAS and determination of selected soil chemical and physical characteristics. The mean HC values decreased at all TWW sites by 42.9% up to 50.8% compared to FW sites. The SAS was 11.3% to 32.4% lower at all TWW sites. Soil electrical conductivity (EC) and exchangeable sodium percentage (ESP) were generally higher at TWW sites. These results indicate the use of TWW for irrigation is a viable, but potentially deleterious option, as it influences soil physical and chemical properties.

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Templated quasicrystalline ordering of single elements and molecules

Acta Crystallographica Section A Foundations and Advances ◽

10.1107/s2053273314099185 ◽

2014 ◽

Vol 70 (a1) ◽

pp. C81-C81

Author(s):

H. R. Sharma ◽

J. A. Smerdon ◽

K. Nozawa ◽

K. M. Young ◽

T. P. Yadav ◽

...

Keyword(s):

Substrate Surface ◽

Chemical Properties ◽

Scanning Tunneling ◽

Three Dimension ◽

Tunneling Microscopy ◽

Quantum Size ◽

Adsorption Energies ◽

Molecular Layers ◽

Physical And Chemical ◽

The Impact

We have used quasicrystals as templates for the exploration of new epitaxial phenomena. Several interesting results have been observed in the growth on surfaces of the common Al-based quasicrystals [1]. These include pseudomorphic monolayers, quasiperiodically modulated multilayer structures, and fivefold-twinned islands with magic heights influenced by quantum size effects [1]. Here we present our recent works on the growth of various elements and molecules on a new substrate, icosahedral (i) Ag-In-Yb quasicrystal, which have resulted in various epitaxial phenomena not observed previously. The growth of Pb on the five-fold surface of i-Ag-In-Yb yields a film which possesses quasicrystalline ordering in three-dimension [2]. Using scanning tunneling microscopy (STM) and DFT calculations of adsorption energies, we find that lead atoms occupy the positions of atoms in the rhombic triacontahedral (RTH) cluster, the building block of the substrate, and thus grow in layers with different heights and adsorption energies. The adlayer–adlayer interaction is crucial for stabilizing the epitaxial quasicrystalline structure. We will also present the first example of quasicrystalline molecular layers. Pentacene adsorbs at tenfold-symmetric sites of Yb atoms around surface-bisected RTH clusters, yielding quasicrystalline order [3]. Similarly, C-60 growth on the five-fold surface of i-Al-Cu-Fe at elevated temperature produces quasicrystalline layer, where the growth is mediated by Fe atoms on the substrate surface [3]. The finding of quasicrystalline thin films of single elements and molecules opens an avenue for further investigation of the impact of the aperiodic atomic order over periodic order on the physical and chemical properties of materials.

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Fabrication of 239/238Pu-Zirconolite Ceramic Pellets by Natural Sintering

MRS Proceedings ◽

10.1557/proc-807-267 ◽

2003 ◽

Vol 807 ◽

Cited By ~ 2

Author(s):

T. Advocat ◽

F. Jorion ◽

T. Marcillat ◽

G. Leturcq ◽

X. Deschanels ◽

...

Keyword(s):

Grain Size ◽

Radioactive Waste ◽

Nuclear Waste ◽

Chemical Stability ◽

Minor Actinides ◽

Loading Capacity ◽

X Ray Diffraction ◽

X Ray ◽

Physical And Chemical ◽

Inorganic Matrix

ABSTRACTZirconolite is a potential inorganic matrix that is currently investigated in France, in the framework of the 1991 radioactive waste management law, with a view to provide durable containment of the trivalent and tetravalent minor actinides like neptunium, curium, americium and small quantities of unrecyclable plutonium separated from other nuclear waste. To confirm the actinide loading capacity of the zirconolite calcium site and to study the physical and chemical stability of this type of ceramic when subjected to alpha self-irradiation, zirconolite ceramic pellets were fabricated with 10 wt% plutonium oxide (isotope 239 or 238). The 55 pellets are dense (> 93.3% of the theoretical density on average) and free of cracks. They are characterized by a grain size of between 10 and 20 micrometers. X-ray diffraction analyses confirmed the presence of the zirconolite 2M crystalline structure.

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Light-induced crosslinkable semiconducting polymer dots

Chemical Science ◽

10.1039/c4sc03959a ◽

2015 ◽

Vol 6 (3) ◽

pp. 2102-2109 ◽

Cited By ~ 15

Author(s):

Yue Zhang ◽

Fangmao Ye ◽

Wei Sun ◽

Jiangbo Yu ◽

I-Che Wu ◽

...

Keyword(s):

Small Molecules ◽

Chemical Stability ◽

Semiconducting Polymer ◽

Polymer Dots ◽

Semiconducting Polymer Dots ◽

Physical And Chemical

This paper describes photocrosslinkable Pdots with enhanced colloidal, physical, and chemical stability, and excellent encapsulating ability of functional small molecules.

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