pH influence on the mechanisms of interaction between chitosan and ovalbumin: a multi-spectroscopic approach

2022 ◽  
Vol 123 ◽  
pp. 107137
Author(s):  
Gustavo Leite Milião ◽  
Lucas de Souza Soares ◽  
Douglas Fernando Balbino ◽  
Éverton de Almeida Alves Barbosa ◽  
Gustavo Costa Bressan ◽  
...  
Keyword(s):  
Ph Influence

Litter thickness and soil pH influence the diversity of saprotrophic fungi in primary forest fragments in the Amazon

Pedobiologia ◽  
2021 ◽  
pp. 150771
Author(s):  
Maria Elisa Ferreira de Queiroz ◽  
Josiane Santana Monteiro ◽  
Arleu B. Viana-Junior ◽  
Catarina de Lurdes Bezerra Praxedes ◽  
Patrick Lavelle ◽  
...  
Keyword(s):  
Soil Ph ◽  
Primary Forest ◽  
Forest Fragments ◽  
Saprotrophic Fungi ◽  
Ph Influence

PH Influence on the Properties of Mullite Coatings

1997 ◽  
Vol 132-136 ◽  
pp. 1544-1547
Author(s):  
Nancy E. Quaranta ◽  
Roberto E. Caligaris ◽  
Laura E. Briand ◽  
Horacio J. Thomas
Keyword(s):  
Ph Influence ◽  
Mullite Coatings

PROPERTIES OF DRY-CURED HAM: TEMPERATURE AND pH INFLUENCE DURING SALTING STAGE

1997 ◽  
Vol 8 (3) ◽  
pp. 315-327 ◽  
Author(s):  
J.A. PÉREZ-ALVAREZ ◽  
J. FERNÁNDEZ-LÓPEZ ◽  
M.A. GAGO-GAGO ◽  
C. RUÍZ-PELUFFO ◽  
M. ROSMINI ◽  
...  
Keyword(s):  
Ph Influence ◽  
Dry Cured Ham

pH influence on rheological and structural properties of chitosan/poly(vinyl alcohol)/layered double hydroxide composites

2015 ◽  
Vol 70 ◽  
pp. 147-156 ◽  
Author(s):  
Maria Bercea ◽  
Elena-Livia Bibire ◽  
Simona Morariu ◽  
Mirela Teodorescu ◽  
Gabriela Carja
Keyword(s):  
Structural Properties ◽  
Layered Double Hydroxide ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Ph Influence ◽  
Double Hydroxide

scholarly journals Deprotonation Mechanism of Methyl Gallate: UV Spectroscopic and Computational Studies

2018 ◽  
Vol 19 (10) ◽  
pp. 3111 ◽  
Author(s):  
Liangliang Zhang ◽  
Yuchen Liu ◽  
Yongmei Wang
Keyword(s):  
Quantum Chemical Calculations ◽  
Quantum Chemical ◽  
Acid Dissociation ◽  
Acid Dissociation Constant ◽  
Methyl Gallate ◽  
Deprotonated Form ◽  
Ph Influence ◽  
Combined Use ◽  
Deprotonation Reaction ◽  
Uv Visible

In the present paper, methyl gallate (MeG), a simple polyphenol and also the monomer of hydrolysable tannins, was selected to study the deprotonation process for the hydroxyls of the galloyl group by the combined use of spectroscopic measurements and quantum chemical calculations. The results of quantum chemical calculations show that the deprotonated form of methyl gallate undergoes the para-quinoid localization in the benzene ring, compared with free methyl gallate. The predicted spectra obtained from the free and deprotonated methyl gallate models are in agreement with the experimental UV-visible (UV-vis) absorption spectra. In the same way, the vibrational spectra of the para-quinoid MeG models validate the proposed mechanism of the deprotonation of MeG molecule. The pH influence on the deprotonation reaction and oxidization of phenolic groups has been also investigated. The pKa values of MeG were evaluated using the chemometric modeling method. The first acid dissociation constant (pKa1) for MeG was evaluated to be 4.20 ± 0.01, and the second one (pKa2) was 10.78 ± 0.06.

Biodegradability study and pH influence on growth and orientation of ZnO nanorods via aqueous solution process

2012 ◽  
Vol 258 (18) ◽  
pp. 6765-6771 ◽  
Author(s):  
P. Suresh Kumar ◽  
P. Paik ◽  
A. Dhayal Raj ◽  
D. Mangalaraj ◽  
D. Nataraj ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Zno Nanorods ◽  
Solution Process ◽  
Ph Influence
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