Effects of Methylene Blue and Neutral Red on the Structural Viscosity of Protoplasm

1940 ◽  
Vol 59 (3) ◽  
pp. 279 ◽  
Author(s):  
Henry T. Northen
Keyword(s):  
Methylene Blue ◽  
Neutral Red ◽  
Structural Viscosity

The effect of physico-chemically immobilized methylene blue and neutral red on the anode of microbial fuel cell

2012 ◽  
Vol 17 (2) ◽  
pp. 361-370 ◽  
Author(s):  
Arseniy L. Popov ◽  
Jung Rae Kim ◽  
Richard M. Dinsdale ◽  
Sandra R. Esteves ◽  
Alan J. Guwy ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Neutral Red

scholarly journals Experiments on the Effect of Dyes on Induction and Respiration in the Amphibian Gastrula

1939 ◽  
Vol 16 (2) ◽  
pp. 150-154
Author(s):  
R. A. BEATTY ◽  
S. DE JONG ◽  
M. A. ZIELIŃSKI
Keyword(s):  
Methylene Blue ◽  
Oxygen Consumption ◽  
Weak Solutions ◽  
Neural Differentiation ◽  
Neutral Red ◽  
Cell Respiration ◽  
Janus Green ◽  
Method Show ◽  
Weak Concentration

1. It is shown that pieces of presumptive epidermis (ventral ectoderm of the gastrula), when isolated into weak solutions of several dyes, will undergo neural differentiation. Dyes such as Janus green and neutral red, which are not known to accelerate cell respiration, appear to have this effect, as well as methylene blue, the accelerating action of which on cell respiration is well known. 2. Measurements of the oxygen consumption of isolated pieces of the gastrula by the Cartesian Diver method show that methylene blue, if in weak concentration, has an accelerating action of about 45%. In stronger concentrations it is inhibitory.

A simple technique for the preservation of vital dyes in fixed and sectioned embryos

Development ◽  
1966 ◽  
Vol 15 (2) ◽  
pp. 131-132
Author(s):  
J. Pertusa
Keyword(s):  
Methylene Blue ◽  
Ethyl Alcohol ◽  
Toluidine Blue ◽  
Trypan Blue ◽  
Simple Technique ◽  
Nile Blue ◽  
Neutral Red ◽  
The Other ◽  
Serial Sectioning ◽  
Vital Dyes

In embryological work using vital dyes it is highly desirable to be able to study the distribution of the dyes in fixed material, whether examined in toto or after embedding in paraffin and serial sectioning. However, both fixation and dehydration present problems for the preservation of colour in vitally stained cells. Some fixatives preserve some dyes but, so far as I am aware, none will preserve all the vital dyes in common use. On the other hand, ethyl alcohol destroys or dissolves all vital dyes and its use in dehydration is thus undesirable. Among the fixatives that have been proposed are those of Golowin (1902), Mitamura (1923), Parat & Painlevé (1925), and Tchéou Tai Chuin (1930) for neutral red; that of Izquierdo (1955) for toluidine blue; that of Gérard (1925) for Trypan blue; that of Turchini (1919) for methylene blue; that of Lehmann (1929) for Nile blue.

Properties of oral asaccharolytic black-pigmented Bacteroides

1984 ◽  
Vol 30 (9) ◽  
pp. 1133-1136 ◽  
Author(s):  
D. Mayrand ◽  
G. Bourgeau ◽  
D. Grenier ◽  
J.-M. Lacroix
Keyword(s):  
Methylene Blue ◽  
Congo Red ◽  
Neutral Red ◽  
Enzymatic Activities ◽  
The Other ◽  
Other Hand ◽  
Inhibitory Agents ◽  
Group B

Bacteroides endodontalis, a newly described asaccharolytic black-pigmented Bacteroides, along with the other two recognized species of this group (B. gingivalis and B. asaccharolyticus) were studied for their susceptibility to various dyes and inhibitory agents and for some of their enzymatic activities to facilitate differentiating between them. Bacteroides endodontalis resembles B. asaccharolyticus physiologically except for the fact that the former cannot grow on media containing methylene blue, neutral red, or 3% sodium choride, whereas B. asaccharolyticus can. On the other hand, B. endodontalis and B. gingivalis can grow on a medium containing Congo red while B. asaccharolyticus cannot.

Uptake of micropollutant-bisphenol A, methylene blue and neutral red onto a novel bagasse-β-cyclodextrin polymer by adsorption process

Chemosphere ◽  
2020 ◽  
Vol 259 ◽  
pp. 127439 ◽  
Author(s):  
Farid Mzee Mpatani ◽  
Aaron Albert Aryee ◽  
Alexander Nti Kani ◽  
Qiehui Guo ◽  
Evans Dovi ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Bisphenol A ◽  
Adsorption Process ◽  
Neutral Red ◽  
Cyclodextrin Polymer

scholarly journals Removal of Methylene Blue and Neutral Red Dyes from Spiked Waste-Water Using Edtad Modified Cellulose Obtained from Pennisetum purpureum

2021 ◽  
pp. 1-12
Author(s):  
Brenda Oyaro ◽  
Elijah Ngumba ◽  
Ali Mohammed Salim
Keyword(s):  
Waste Water ◽  
Methylene Blue ◽  
Freundlich Isotherm ◽  
Neutral Red ◽  
Pennisetum Purpureum ◽  
Human Beings ◽  
Order Model ◽  
Aquatic Life ◽  
Percentage Removal ◽  
Modified Cellulose

The presence of dyes in aquatic effluents is highly visible, undesirable, carcinogenic to human beings and toxic to living organisms. EDTAD modified cellulose extracted from Pennisetum purpureum was studied as an adsorbent for the removal of cationic dyes from spiked waste-water. Shimadzu Fourier Transform Infrared spectrophotometer, was used to analyze functional groups of cellulose and EDTAD modified cellulose. The characteristic peaks at 1260 cm-1, 1634 cm-1, 1058 cm-1, and 1740 cm-1 indicated formation of ester bond linkages associated with the introduction of EDTAD thus successful modification of cellulose. Shimadzu UV-VIS 1800 series determined the degree of dye concentration. Optimum adsorption was determined by varying the dosage, pH, contact time, and the initial concentration of the dyes. An increase in adsorbent mass increased the percentage removal for both dyes up to a maximum of 98%. Low pH levels prompted low percentage removal as compared to higher pH values for both dyes. Kinetic studies were carried out using the Freundlich and Langmuir isotherms, to investigate the rate of adsorption. Methylene blue and neutral red dyes seemed to conform to langmuir with high R2 values of 0.999 and 0.997 respectively while freundlich isotherm had values of 0.9969 and 0.9835, indicating that the adsorption surface of the EDTAD modified cellulose was monolayer. Methylene Blue adsorption capacity was 200mg/g while for Neutral Red dye was 149.25mg/g. The kinetics were well depicted by pseudo second order model whose correlation coefficients were closer to unity than those of the first order model. The efficiency of EDTAD modified cellulose from Pennisetum purpureum as an adsorbent in the removal of dyes renders it a remedy to the various problems caused by dyes to aquatic life and human beings.

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