Volume, Surface and Hydration Properties of Proteins

2009 ◽  
pp. 19-29
Author(s):  
Helmut Durchschlag ◽  
Peter Zipper
Keyword(s):  
Hydration Properties

Effect of interlayer cation and relative humidity on the hydration properties of a dioctahedral smectite

2007 ◽  
Vol 2007 (suppl_26) ◽  
pp. 417-422 ◽  
Author(s):  
W. Oueslati ◽  
M. S. Karmous ◽  
H. Ben Rhaiem ◽  
B. Lanson ◽  
A. Ben Haj Amara
Keyword(s):  
Relative Humidity ◽  
Interlayer Cation ◽  
Hydration Properties ◽  
Dioctahedral Smectite

Influence of the carboxyl group on the physicochemical and hydration properties of the imidazolium-based ionic liquid

2021 ◽  
Vol 328 ◽  
pp. 115474
Author(s):  
Nikolett Bagány ◽  
Aleksandar Tot ◽  
Milan Vraneš ◽  
Slobodan Gadžurić
Keyword(s):  
Ionic Liquid ◽  
Carboxyl Group ◽  
Hydration Properties

From amino acids to dipeptide: The changes in thermal stability and hydration properties of β-alanine, L-histidine and L-carnosine

2021 ◽  
Vol 328 ◽  
pp. 115250
Author(s):  
Milan Vraneš ◽  
Jovana Panić ◽  
Aleksandar Tot ◽  
Snežana Papović ◽  
Slobodan Gadžurić ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Amino Acids ◽  
Hydration Properties

scholarly journals Direct Laser Interference Patterning of Diffraction Gratings in Safrofilcon-A Hydrogel: Fabrication and Hydration Assessment

Polymers ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 679
Author(s):  
Daniel Sola ◽  
Stephan Milles ◽  
Andrés F. Lasagni
Keyword(s):  
Laser Fluence ◽  
Contact Lenses ◽  
Laser Source ◽  
Spatial Period ◽  
Laser Interference ◽  
Periodic Patterns ◽  
Hydration Properties ◽  
Water Contact ◽  
Direct Laser ◽  
Direct Laser Interference Patterning

Refractive index modification by laser micro-structuration of diffractive optical devices in ophthalmic polymers has recently been applied for refractive correction in the fields of optics and ophthalmology. In this work, Safrofilcon-A hydrogel, used as soft contact lenses, was processed by direct laser interference patterning (DLIP) to fabricate linear periodic patterns on the surface of the samples. Periodic modulation of the surface was attained under two-beam interference by using a Q-switched laser source with emission at 263 nm and 4 ns pulse duration. Features of processed areas were studied as a function of both the interference spatial period and the laser fluence. Optical confocal microscopy used to evaluate the topography of the processed samples showed that both structured height and surface roughness increased with laser fluence. Static water contact angle (WCA) measurements were carried out with deionized water droplets on the structured areas to evaluate the hydration properties of DLIP structures. It was observed that the laser structured areas induced a delay in the hydration process. Finally, microstructural changes induced in the structured areas were assessed by confocal micro-Raman spectroscopy showing that at low laser fluences the polymer structure remained almost unaltered. In addition, Raman spectra of hydrated samples recovered the original shape of areas structured at low laser fluence.

Hydration properties and kinetic characteristics of blended cement containing lithium slag powder

2021 ◽  
Vol 39 ◽  
pp. 102287
Author(s):  
Mengyi Zhai ◽  
Jihui Zhao ◽  
Dongmin Wang ◽  
Yiren Wang ◽  
Qibao Wang
Keyword(s):  
Blended Cement ◽  
Kinetic Characteristics ◽  
Hydration Properties ◽  
Slag Powder ◽  
Lithium Slag

Impact of high-pressure homogenization on the microstructure and rheological properties of citrus fiber

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Dianbin Su ◽  
Xin-Di Zhu ◽  
Yong Wang ◽  
Dong Li ◽  
Li-Jun Wang
Keyword(s):  
Particle Size ◽  
High Pressure ◽  
Rheological Properties ◽  
Binding Capacity ◽  
Loss Modulus ◽  
High Pressure Homogenization ◽  
Carreau Model ◽  
Hydration Properties ◽  
Water Binding ◽  
Water Holding

Abstract Citrus fiber dispersion with different concentrations (5–25 g/kg) was treated by high-pressure homogenization (90 and 160 MPa) for two cycles. The particle size distribution, hydration properties of powders, morphology and rheological measurements were carried out to study the microstructure and rheological properties changes by high-pressure homogenization (HPH). In conclusion, the HPH can reduce the particle size of fiber, improve the water holding capacity and water binding capacity. Furthermore, fiber shape can be modified from globular cluster to flake-like slices, and tiny pores can be formed on the surface of citrus fiber. The apparent viscosity, storage modulus and loss modulus were increased by HPH whereas the activation energy was reduced. The Hershcel–Bulkley model, Carreau model and Power Law mode were selected to evaluate the rheological properties.

Hydration properties of mechanosensitive channel pores define the energetics of gating

2010 ◽  
Vol 22 (45) ◽  
pp. 454120 ◽  
Author(s):  
A Anishkin ◽  
B Akitake ◽  
K Kamaraju ◽  
C-S Chiang ◽  
S Sukharev
Keyword(s):  
Mechanosensitive Channel ◽  
Hydration Properties

scholarly journals Assessment of the Nutritional Value, Techno-Functional, and In Vitro Physiological Properties of Six Edible Insects

Proceedings ◽  
2020 ◽  
Vol 70 (1) ◽  
pp. 77
Author(s):  
Yolanda Aguilera ◽  
Miguel Rebollo-Hernanz ◽  
Irene Pastrana ◽  
Vanesa Benitez ◽  
Gerardo Alvarez-Rivera ◽  
...  
Keyword(s):  
Antioxidant Capacity ◽  
Bulk Density ◽  
Bile Salts ◽  
Positive Impact ◽  
Starch Hydrolysis ◽  
Hydration Properties ◽  
Physiological Properties ◽  
Glucose Diffusion ◽  
Foaming Capacity

The objective of this study was to evaluate the nutritional composition, techno-functional, and in vitro physiological properties of flours from six different insect species (mealworm, beetle, caterpillar, ant, locust, and cricket). The chemical composition of insects was evaluated following the standard methods (AOAC). Bulk density, water holding capacity, oil holding capacity, water absorption capacity, swelling capacity, emulsifying activity, foaming capacity, and gelation capacity were measured. In vitro antioxidant capacity was measured by the direct ABTS method. Hypoglycemic (glucose adsorption and the inhibition of α-amylase, glucose diffusion, and starch hydrolysis) and hypolipidemic (cholesterol and bile salts binding and lipase inhibition capacities) were investigated using in vitro methods. Insect flours exhibited a high content of protein (39.4%–58.1%) and fat (17.7%–50.1%) as main components, although the presence of chitin in ant samples was also highlighted. The techno-functional properties showed high oil holding, swelling, and emulsifying capacities in all insect flours analyzed, besides bulk density, hydration properties, and foaming capacity showing average values and no gelation capacity. Insects showed high antioxidant capacity (179–221 mg Trolox equivalents/g). Moreover, these edible insect flours revealed effective hyperglycemic and hyperlipidemic properties. Insect flours inhibited α-amylase activity (47.1%–98.0%) and retarded glucose diffusion (17.2%–29.6%) and starch hydrolysis (18.2%–88.1%). Likewise, they bound cholesterol and bile salts (8.4%–98.6%) and inhibited lipase activity (8.9%–47.1%). Hence, these insect flours might be of great interest to the food industry, being a healthy source of protein, exerting a positive impact on functional food properties, and potentially preventing the development of diseases associated with hyperglycemia and hyperlipidemia.

Molecular mobility and hydration properties of segmented polyurethanes with varying structure of soft- and hard-chain segments

1999 ◽  
Vol 71 (8) ◽  
pp. 1209-1221 ◽  
Author(s):  
A. Kanapitsas ◽  
P. Pissis ◽  
J. L. Gomez Ribelles ◽  
M. Monleon Pradas ◽  
E. G. Privalko ◽  
...  
Keyword(s):  
Molecular Mobility ◽  
Hydration Properties ◽  
Segmented Polyurethanes
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