scholarly journals The Relationship of Magnesium Ion and Molecular Structure to 2,4-Dichlorophenoxyacetic Acid and Some Related Compounds to the Inhibition of the Respiration of Azotobacter vinelandii.

1958 ◽  
Vol 33 (2) ◽  
pp. 99-101 ◽  
Author(s):  
Emmett J. Johnson ◽  
Arthur R. Colmer
Keyword(s):  
Molecular Structure ◽  
Azotobacter Vinelandii ◽  
Magnesium Ion ◽  
Dichlorophenoxyacetic Acid ◽  
2,4 Dichlorophenoxyacetic Acid ◽  
Relationship Of ◽  
The Relationship ◽  
Related Compounds

The relationship of structural defect–redox property–catalytic performance of perovskites and their related compounds for CO and NOx removal

2004 ◽  
Vol 90 (3-4) ◽  
pp. 231-244 ◽  
Author(s):  
Hongxing Dai ◽  
Hong He ◽  
Peiheng Li ◽  
Lizhen Gao ◽  
Chak-Tong Au
Keyword(s):  
Structural Defect ◽  
Catalytic Performance ◽  
Redox Property ◽  
Nox Removal ◽  
Relationship Of ◽  
The Relationship ◽  
Related Compounds

scholarly journals A Concise Review on the Molecular Structure and Function Relationship of β-Glucan

2019 ◽  
Vol 20 (16) ◽  
pp. 4032 ◽  
Author(s):  
Bin Du ◽  
Maninder Meenu ◽  
Hongzhi Liu ◽  
Baojun Xu
Keyword(s):  
Molecular Structure ◽  
Functional Food ◽  
Structural Characteristics ◽  
Textural Properties ◽  
High Viscosity ◽  
Biological Properties ◽  
Food Ingredient ◽  
And Function ◽  
Relationship Of ◽  
The Relationship

β-glucan is a non-starch soluble polysaccharide widely present in yeast, mushrooms, bacteria, algae, barley, and oat. β-Glucan is regarded as a functional food ingredient due to its various health benefits. The high molecular weight (Mw) and high viscosity of β-glucan are responsible for its hypocholesterolemic and hypoglycemic properties. Thus, β-glucan is also used in the food industry for the production of functional food products. The inherent gel-forming property and high viscosity of β-glucan lead to the production of low-fat foods with improved textural properties. Various studies have reported the relationship between the molecular structure of β-glucan and its functionality. The structural characteristics of β-glucan, including specific glycosidic linkages, monosaccharide compositions, Mw, and chain conformation, were reported to affect its physiochemical and biological properties. Researchers have also reported some chemical, physical, and enzymatic treatments can successfully alter the molecular structure and functionalities of β-glucan. This review article attempts to review the available literature on the relationship of the molecular structure of β-glucan with its functionalities, and future perspectives in this area.

scholarly journals Variation of the interphase heterochromatin in Artemia (Crustacea, Anostraca) of the Americas is related to changes in nuclear size and ionic composition of hipersaline habitats

2017 ◽  
Vol 77 (3) ◽  
pp. 642-654 ◽  
Author(s):  
M. Parraguez ◽  
G. Gajardo
Keyword(s):  
Calcium Ions ◽  
Significant Variation ◽  
Ionic Composition ◽  
Species Level ◽  
Nuclear Size ◽  
Magnesium Ion ◽  
Variation Index ◽  
Species Specific ◽  
Relationship Of ◽  
The Relationship

Abstract The populations of Artemia (or brine shrimp) from the Americas exhibit a wide variation in the amount of interphase heterochromatin. There is interest in understanding how this variation affects different parameters, from the cellular to the organismal levels. This should help to clarify the ability of this organism to tolerate brine habitats regularly subject to strong abiotic changes. In this study, we assessed the amount of interphase heterochromatin per nucleus based on chromocenter number (N-CHR) and relative area of chromocenter (R-CHR) in two species of Artemia, A. franciscana (Kellog, 1906) (n=9 populations) and A. persimilis (Piccinelli and Prosdocimi, 1968) (n=3 populations), to investigate the effect on nuclear size (S-NUC). The relationship of the R-CHR parameter with the ionic composition (IC) of brine habitats was also analysed. Our results indicate a significant variation in the amount of heterochromatin both within and between species (ANOVA, p<0.001). The heterochromatin varied from 0.81 ± 1.17 to 12.58 ± 3.78 and from 0.19 ± 0.34% to 11.78 ± 3.71% across all populations, for N-CHR and R-CHR parameters, respectively. N-CHR showed less variation than R-CHR (variation index 15.5-fold vs. 62-fold). At least five populations showed a significant association (p<0.05) between R-CHR and S-NUC, either with negative (four populations, r= from -0.643 to -0.443), or positive (one population, r= 0.367) values.Within each species, there were no significant associations between both parameters (p>0.05). The R-CHR and IC parameters were associated significantly for the magnesium ion (r= 0.496, p<0.05) and also for the chloride, sodium and calcium ions (r = from -0.705 to -0.478, p<0.05). At species level, a significant association between both parameters was also found in A. franciscana populations, for the sulphate and calcium ions, in contrast to A. persimilis. These findings suggest that the amount of interphase heterochromatin modifies the nuclear size in Artemia. Our data also indicate that change in the amount of interphase heterochromatin is in line with the ionic composition of brines. This would be a species-specific phenomenon, whose occurrence may be involved in the ability of this organism to survive in these environments.

Sign in / Sign up

Export Citation Format

Share Document