scholarly journals Combined effects of ionic strength and enzymatic pre-treatment in thermal gelation of peanut proteins extracts

2020 ◽  
Vol 137 ◽  
pp. 109362
Author(s):  
Benoît Basse ◽  
Véronique Bosc ◽  
Jean-Marc Saiter ◽  
Monique Chan-Huot ◽  
Jean-Pierre Dupas ◽  
...  
Keyword(s):  
Ionic Strength ◽  
Combined Effects ◽  
Thermal Gelation ◽  
Pre Treatment ◽  
Peanut Proteins

Influence of pH and ionic strength on the thermal gelation behaviour of pea protein

2021 ◽  
pp. 106903
Author(s):  
Caren Tanger ◽  
Michaela Müller ◽  
David Andlinger ◽  
Ulrich Kulozik
Keyword(s):  
Ionic Strength ◽  
Pea Protein ◽  
Thermal Gelation ◽  
Influence Of Ph

scholarly journals A modified fouling index (MFI40) and fouling predicting approach for ultrafiltration of secondary effluents

2018 ◽  
Vol 9 (1) ◽  
pp. 67-82 ◽  
Author(s):  
B. J. Cai ◽  
I. Baudin ◽  
H. Y. Ng
Keyword(s):  
Standard Deviation ◽  
Treatment Process ◽  
Pilot Scale ◽  
Operating Pressure ◽  
Combined Effects ◽  
Positive Role ◽  
Secondary Effluents ◽  
Pre Treatment ◽  
Modified Fouling Index ◽  
Turbidity Increase

Abstract Fouling indices for evaluating fouling propensity of secondary effluents (SEF) as feed of ultrafiltration (UF) systems are important parameters for the design and operation of the UF process. However, limited fouling indices have been developed and applied for UF feedwater. This study (i) established a modified UF fouling index (MFI40) by raising operating pressure from 30 psi in a traditional MFI test to 40 psi. Standard deviation of MFI40 tests was lower than that of traditional MFI by 68.6%, indicating better stability and repeatability of MFI40. It (ii) investigated the combined effects of UF feedwater characteristics on MFI40. Biopolymers and turbidity played a dominant and secondary positive role in the MFI40, respectively. The effect of conductivity on MFI40 changed from positive to negative with a turbidity increase. It also (iii) validated the MFI40 in both laboratory- and pilot-scale UF membrane units, and UF fouling rates were linearly correlated to the MFI40 of their feeds, and (iv) explored the practical use of the MFI40. It was applied to determine the maximum allowable UF feedwater quality (MFI40max), which could be used to select an appropriate pre-treatment process. A fouling predicting model was established based on the feedwater MFI40 and the operating flux, with an average predicting error of 26.8%.

Combined effects of dissolved organic matter, pH, ionic strength and halides on photodegradation of oxytetracycline in simulated estuarine waters

2019 ◽  
Vol 21 (1) ◽  
pp. 155-162 ◽  
Author(s):  
Ya-nan Zhang ◽  
Jianchen Zhao ◽  
Yangjian Zhou ◽  
Jiao Qu ◽  
Jingwen Chen ◽  
...  
Keyword(s):  
Organic Matter ◽  
Ionic Strength ◽  
Dissolved Organic Matter ◽  
Combined Effects ◽  
Estuarine Waters ◽  
Effects Of Ph

Combined effects of pH, DOM, ionic strength, and specific halides on the photodegradation of representative antibiotics in estuarine waters were revealed.

Thermal gelation of brown trout myofibrils from white and red muscles: effect of pH and ionic strength

2002 ◽  
Vol 82 (4) ◽  
pp. 452-463 ◽  
Author(s):  
Florence Lefevre ◽  
Benoit Fauconneau ◽  
Ahmed Ouali ◽  
Joseph Culioli
Keyword(s):  
Ionic Strength ◽  
Brown Trout ◽  
Effect Of Ph ◽  
Thermal Gelation

Effects of the Orientation of Clay Particles and Ionic Strength on Diffusion and Activation Enthalpies of I− and Cs+ Ions in Compacted Bentonite (II)

2006 ◽  
Vol 932 ◽  
Author(s):  
Haruo Sato
Keyword(s):  
Ionic Strength ◽  
Ion Exchange ◽  
Free Water ◽  
Dry Density ◽  
Combined Effects ◽  
Clay Particles ◽  
Compacted Bentonite ◽  
Parallel Direction ◽  
Ionic Diffusivity ◽  
Cs Ions

ABSTRACTThe apparent diffusivities (Da) and activation enthalpies (ΔEa) for I− and Cs+ ions in compacted Na-smectite were obtained in the parallel and perpendicular directions to the orientation of smectite particles as a function of smectite's dry density (0.9-1.4 Mg/m3), salinity ([NaCl]=0.01, 0.51 M) and temperature (295-333 K). The Da-values for both ions tended to be higher in the parallel direction than in the perpendicular direction to the orientation of smectite particles. The Da-values of I− ions in the parallel direction decreased with increasing salinity only at low dry density, but those of Cs+ ions increased with increasing salinity for all conditions. Based on this, it is interpreted that I− ions predominantly diffuse in external pores and Cs+ ions diffuse in both interlayer and external pores. The ΔEa-values forI− ions are at similar levels as those for the ionic diffusivity in free water (D°) of I− ions at low dry density and increased with increasing dry density. The ΔEa-values for Cs+ ions are higher than those for the D° of Cs+ ions even at low dry density and increased with increasing dry density. Such high ΔEa-values for Cs+ ions are considered to be due to the combined effects of the ion exchange enthalpy between Cs+ and Na+ ions in smectite and the lowering in the activity of porewater.

Effect of Ionic Strength on Dynamic Viscoelastic Behavior of Myosin during Thermal Gelation

1990 ◽  
Vol 55 (1) ◽  
pp. 51-54 ◽  
Author(s):  
TAKESHI SANO ◽  
SATOSHI F. NOGUCHI ◽  
JUICHIRO J. MATSUMOTO ◽  
TAKAHIDE TSUCHIYA
Keyword(s):  
Ionic Strength ◽  
Viscoelastic Behavior ◽  
Thermal Gelation

The ionic strength dependence of chromatin folding

1978 ◽  
Vol 36 (2) ◽  
pp. 220-221
Author(s):  
F. Thoma ◽  
TH. Koller
Keyword(s):  
Electron Microscopy ◽  
Electron Microscope ◽  
Ionic Strength ◽  
Specimen Preparation ◽  
Preparation Technique ◽  
Carbon Supports ◽  
Ionic Strength Dependence ◽  
Chromatin Folding ◽  
Strength Dependence ◽  
Preparation Techniques

Under a variety of electron microscope specimen preparation techniques different forms of chromatin appearance can be distinguished: beads-on-a-string, a 100 Å nucleofilament, a 250 Å fiber and a compact 300 to 500 Å fiber.Using a standardized specimen preparation technique we wanted to find out whether there is any relation between these different forms of chromatin or not. We show that with increasing ionic strength a chromatin fiber consisting of a row of nucleo- somes progressively folds up into a solenoid-like structure with a diameter of about 300 Å.For the preparation of chromatin for electron microscopy the avoidance of stretching artifacts during adsorption to the carbon supports is of utmost importance. The samples are fixed with 0.1% glutaraldehyde at 4°C for at least 12 hrs. The material was usually examined between 24 and 48 hrs after the onset of fixation.

Conformational Transitions in Escherichia coli Ribosomal RNAs as Visualized by Dedicated STEM

1988 ◽  
Vol 46 ◽  
pp. 176-177
Author(s):  
J.S. Wall ◽  
V. Maridiyan ◽  
S. Tumminia ◽  
J. Hairifeld ◽  
M. Boublik
Keyword(s):  
Ionic Strength ◽  
Three Dimensional ◽  
Conformational Transitions ◽  
Dark Field ◽  
Dimensional Structure ◽  
Ribosomal Rnas ◽  
Field Mode ◽  
Freeze Dried ◽  
High Resolution Images ◽  
Low Ionic Strength

The high contrast in the dark-field mode of dedicated STEM, specimen deposition by the wet film technique and low radiation dose (1 e/Å2) at -160°C make it possible to obtain high resolution images of unstained freeze-dried macromolecules with minimal structural distortion. Since the image intensity is directly related to the local projected mass of the specimen it became feasible to determine the molecular mass and mass distribution within individual macromolecules and from these data to calculate the linear density (M/L) and the radii of gyration.2 This parameter (RQ), reflecting the three-dimensional structure of the macromolecular particles in solution, has been applied to monitor the conformational transitions in E. coli 16S and 23S ribosomal RNAs in solutions of various ionic strength.In spite of the differences in mass (550 kD and 1050 kD, respectively), both 16S and 23S RNA appear equally sensitive to changes in buffer conditions. In deionized water or conditions of extremely low ionic strength both appear as filamentous structures (Fig. la and 2a, respectively) possessing a major backbone with protruding branches which are more frequent and more complex in 23S RNA (Fig. 2a).

Sign in / Sign up

Export Citation Format

Share Document