Study of the interaction between lysozyme and sodium octanoate in aqueous solutions

2004 ◽  
Vol 249 (1-3) ◽  
pp. 45-50 ◽  
Author(s):  
Juan M. Ruso ◽  
Alfredo Gonzáez-Pérez ◽  
Gerardo Prieto ◽  
Félix Sarmiento
Keyword(s):  
Aqueous Solutions ◽  
Sodium Octanoate

scholarly journals Apparent molar quantities of sodium octanoate in aqueous solutions

2004 ◽  
Vol 283 (1) ◽  
pp. 117-117
Author(s):  
Alfredo Gonz�lez-P�rez ◽  
Juan M. Ruso ◽  
Gerardo Prieto ◽  
F�lix Sarmiento
Keyword(s):  
Aqueous Solutions ◽  
Sodium Octanoate

Apparent molar quantities of sodium octanoate in aqueous solutions

2004 ◽  
Vol 282 (10) ◽  
pp. 1133-1139 ◽  
Author(s):  
Alfredo Gonz�lez-P�rez ◽  
Juan M. Ruso ◽  
Gerardo Prieto ◽  
F�lix Sarmiento
Keyword(s):  
Aqueous Solutions ◽  
Sodium Octanoate

Ultrafiltration of Aqueous Solutions of Food Dye in the Presence of Surfactants

2017 ◽  
Vol 68 (1) ◽  
pp. 6-10
Author(s):  
George Alexandru Popa ◽  
Daniela Florentina Popa (Enache) ◽  
Dumitra Daniela Slave (Clej) ◽  
Ion Din Spiridon ◽  
Cristina Monica Mirea ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Membrane Surface ◽  
Cross Flow ◽  
Sodium Octanoate ◽  
Food Dye ◽  
Cross Flow Filtration ◽  
Dead End ◽  
Food Dyes ◽  
Flow Filtration ◽  
Quinoline Yellow

The objective of the study is the low-pressure membrane process for treating aqueous solutions containing food dyes and surfactants. The influence of surfactants (SDS � sodium dedecil sulphate, SO � sodium octanoate) in the separation of synthetic food dyes (E104 � quinoline yellow) was analyzed. Polysulfone and polysulfone-polyaniline membranes were used. Dye and surfactant concentrations used were 10% (equivalent to 100g/m3). The pressures used in the ultrafiltration process were 0.1, 0.2 and 0.3 MPa. When dye containing solutions were passed through the membranes, an increase in their flux was observed. The presence of surfactants in the solutions lead to a decline in flux when pressures of 0.1 and 0.2 MPa were used, but an improvement could be seen as the pressure increased to 0.3 MPa, for both dead-end and cross-flow filtration. Using only dead-end alternative, higher fluxes were achieved for both membranes, but it decreases with time due to accumulation on the membrane surface. The use of cross-flow filtration did not allow accumulation on the membrane surface so that the flux was constant in time.The use of anionic surfactants improved the food dye retention. The interactions between membranes and surfactants can be an important factor supporting the efficiency of the ultrafiltration.

CONDUCTANCES OF AQUEOUS SOLUTIONS OF SODIUM OCTANOATE AT 25° AND 35° AND THE LIMITING CONDUCTANCE OF THE OCTANOATE ION

1962 ◽  
Vol 40 (5) ◽  
pp. 839-844 ◽  
Author(s):  
A. N. Campbell ◽  
E. M. Kartzmark ◽  
G. R. Lakshminarayanan
Keyword(s):  
Aqueous Solutions ◽  
Micelle Formation ◽  
Sodium Octanoate ◽  
Limiting Equivalent Conductances

Equivalent conductances, densities, and viscosities of aqueous solutions of sodium octanoate have been determined at 25° and 35 °C, at concentrations ranging from 0.0002 M to 2.8 M. The limiting equivalent conductances of the octanoate ion have been determined as 23.08 mhos and 29.09 mhos, at 25° and 35 °C respectively.Comparison has been made of our experimental conductances with those calculated, using the equations of Robinson–Stokes, of Falkenhagen–Leist, and of Fuoss.No evidence has been found of micelle formation in solutions of sodium octanoate.

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