Effect of catalin on radical production in aqueous solutions and cross-linking in deoxyribonucleoprotein complex

1994 ◽  
Vol 118 (2) ◽  
pp. 831-834
Author(s):  
N. B. Polyanskii ◽  
V. I. Binyukov ◽  
E. Mil'
Keyword(s):  
Aqueous Solutions ◽  
Cross Linking ◽  
Radical Production ◽  
Deoxyribonucleoprotein Complex

Preparation and Application of Electrospinning Membranes of Thermoplastic Carboxymethyl Cellulose/PLA for Removal of Cu2+ from Aqueous Solutions

2012 ◽  
Vol 724 ◽  
pp. 61-64
Author(s):  
Ying Li ◽  
Xiao Yan Lin ◽  
Zhe Chen ◽  
Xue Guang Luo ◽  
Wei Li Zuo
Keyword(s):  
Tensile Strength ◽  
Aqueous Solutions ◽  
Removal Efficiency ◽  
Composite Membrane ◽  
Carboxymethyl Cellulose ◽  
Contact Time ◽  
Electrospinning Process ◽  
Cross Linking ◽  
Initial Concentration ◽  
The Cross

A composite membrane of thermoplastic carboxymethyl cellulose (TCMC) /PLA was prepared by electrospinning process, and crossliked by epichlorohydrin solution at different temperature. The cross-linking temperature was optimized by characterizing the morphology and tensile strength of the film. The optimal cross-linking temperature was 50°C. A composite membrane was used to remove Cu2+ from aqueous solutions, and the effects of initial concentration of Cu2+ and contact time on the removal efficiency of Cu2+ were investigated. The removal efficiency of Cu2+ was 13.78%, at the initial concentration of 40 mg·L-1 and contact time of 30s.

scholarly journals Production, Properties and Swelling of Composite Agar-Pectic Gel Particles in an Artificial Gastroenteric Environment

2021 ◽  
Vol 11 (4) ◽  
pp. 456-459
Author(s):  
Elena Mikhailova ◽  
Anatoly Shubakov
Keyword(s):  
Molecular Weight ◽  
Aqueous Solutions ◽  
Aerial Part ◽  
Particle Density ◽  
Cross Linking ◽  
Apple Pectin ◽  
Ionotropic Gelation ◽  
Heracleum Sosnowskyi ◽  
Gel Particles

The purpose of the present work was to obtain and study the properties of composite calcium-agar-pectic gel particles (CaAPGPs) obtained from aqueous solutions of agar (AA) and apple pectin (AP), from aqueous solutions of agar (AA) and pectin heracleuman (HS) in the presence of Ca2+ ions (0.34 M). The swelling of the obtained composite CaAPGPs in an artificial gastroenteric environment was also investigated. Methods and Results: We used commercial AP AU701 (AP, Herbstreith & Fox KG, Germany), HS isolated from the aerial part of the Sosnovskyi hogweed Heracleum sosnowskyi Manden, and food agar (AA). Spherical composite CaAPGPs were obtained from low-methyl esterified AP with a molecular weight of 406 kDa, pectin HS with a molecular weight >300 kDa, and food agar (AA) in the presence of Ca2+ ions (0.34 M) as a cross-linking agent by the method of ionotropic gelation. It was found that dry CaAPGPs based on AP (Ca-AA-AP) have a diameter of 1.16±0.14-1.23±0.05 mm, which was greater than the diameter of dry CaAPGPs based on HS (Ca-AA-HS) (0.95±0.12-1.16±0.05 mm). The density of dry CaAPGPs based on AP (Ca-AA-AP) with an increase in the concentration of AP in their composition from 1% to 2% increased by 1.7 times – from 0.37±0.07 mg/mm3 to 0.63±0.05 mg/mm3. Dry composite CaAPGPs based on HS (Ca-AA-HS) were denser. With an increase in the HS concentration in their composition from 1% to 2%, the degree of particle density increases by 2.2 – from 0.45±0.03 mg/mm3 to 0.97±0.19 mg/mm3. The swelling and degradation of the obtained dry composite CaAPGPs in an artificial gastroenteric environment were studied. It was found that CaAPGPs formed from 1% AP and 2% AA degraded almost immediately in SIF. Whereas, CaAPGPs formed from 2% AP and 1% or 2% AA completely degraded in SCF after 1 hour of incubation in it. CaAPGPs formed from 1% HS and 2% AA, and particles obtained from 2% HS and 1% AA, remained stable in SIF, and then completely degraded immediately upon entering in SCF. CaAPGPs, consisting of 2% HS and 2% AA, dissolve in SCF after 1 hour of incubation in it.

Thermo-induced formation of physical “cross-linking points” of PNIPAM-g-PEO in semidilute aqueous solutions

2006 ◽  
Vol 298 (2) ◽  
pp. 991-995 ◽  
Author(s):  
Hongwei Chen ◽  
Weiwei Li ◽  
Hui Zhao ◽  
Jiangang Gao ◽  
Qijin Zhang
Keyword(s):  
Aqueous Solutions ◽  
Cross Linking

Radical production evidenced by dimer analysis in γ-irradiated amides in aqueous solutions and in the solid state

1987 ◽  
Vol 83 (1) ◽  
pp. 125 ◽  
Author(s):  
Anne-Catherine Dusaucy ◽  
Joëlle de Doncker ◽  
Christine Couillard ◽  
Marc de Laet ◽  
Bernard Tilquin
Keyword(s):  
Solid State ◽  
Aqueous Solutions ◽  
Radical Production

Photosensitized Cross-Linking of Tryptophan and Tyrosine Derivatives by Rose Bengal in Aqueous Solutions

2018 ◽  
Vol 83 (18) ◽  
pp. 10835-10844 ◽  
Author(s):  
Lucie Ludvíková ◽  
Peter Štacko ◽  
Jonathan Sperry ◽  
Petr Klán
Keyword(s):  
Aqueous Solutions ◽  
Rose Bengal ◽  
Cross Linking ◽  
Tyrosine Derivatives

scholarly journals Polyethylenimine-functionalized cellulose aerogel beads for efficient dynamic removal of chromium(vi) from aqueous solution

RSC Advances ◽  
2017 ◽  
Vol 7 (85) ◽  
pp. 54039-54052 ◽  
Author(s):  
Dong-Mei Guo ◽  
Qing-Da An ◽  
Zuo-Yi Xiao ◽  
Shang-Ru Zhai ◽  
Zhan Shi
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Cross Linking ◽  
Amino Groups ◽  
Chromium Vi ◽  
Cellulose Aerogel

Cellulose aerogel beads with high a density of reactive amino groups were facilely prepared via a cross-linking reaction for efficient dynamic removal of Cr(vi) from aqueous solutions.

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