Effect of inert atmosphere in the determination of free fatty acid or free caustic alkali and unsaponified material in soap

1955 ◽  
Vol 32 (10) ◽  
pp. 531-532
Author(s):  
E. W. Blank ◽  
E. Emendorfer
Keyword(s):  
Fatty Acid ◽  
Free Fatty Acid ◽  
Inert Atmosphere ◽  
Caustic Alkali ◽  
Free Caustic Alkali

scholarly journals Quality Analysis of Selected Toilet Soaps in Saudi Arabia Markets

2020 ◽  
pp. 7-14
Author(s):  
E. E. Shehata
Keyword(s):  
Saudi Arabia ◽  
Fatty Acid ◽  
Free Fatty Acid ◽  
Limited Range ◽  
Quality Analysis ◽  
Fatty Matter ◽  
Caustic Alkali ◽  
Ph Values ◽  
Free Caustic Alkali ◽  
Total Fatty Matter

Soap is sodium or potassium salt of fatty acid produced by saponification reaction. The physicochemical properties of soaps determine their quality and hence determine their efficiency. Four toilet soaps from local markets in Saudi Arabia were analyzed for moisture, pH, free caustic alkali or free fatty acid, total fatty matter and insoluble matter in alcohol. The percentage of the moisture ranged between (3.0534±0.1782 -5.1235±0.4891 %), total fatty matter (79.6907± 0.0534 - 94.8253 ± 0.0622), insoluble matter in alcohol (0.7939± 0.0134 - 1.0368± 0.0234% (and there is no excess free caustic alkali. However, the pH values between (8.715±0.0219 - 9.745±0.0212). This study showed that the percent of moisture, free caustic alkali, insoluble matter, total fatty matter and pH values for different samples found to be in limited range. Finally, the percentage of free fatty acid are (1.0433±0.0813 -1.4107±0.1731%). The soaps analyzed proved to be of high quality and meet the standard values.

Validation of a new method for determination of free fatty acid turnover

1987 ◽  
Vol 252 (3) ◽  
pp. E431-E438 ◽  
Author(s):  
J. M. Miles ◽  
M. G. Ellman ◽  
K. L. McClean ◽  
M. D. Jensen
Keyword(s):  
Steady State ◽  
Fatty Acid ◽  
Free Fatty Acid ◽  
Clearance Rate ◽  
Experimental Period ◽  
Metabolic Clearance ◽  
Metabolic Clearance Rate ◽  
State Equations ◽  
Tracer Methods

The accuracy of tracer methods for estimating free fatty acid (FFA) rate of appearance (Ra), either under steady-state conditions or under non-steady-state conditions, has not been previously investigated. In the present study, endogenous lipolysis (traced with 14C palmitate) was suppressed in six mongrel dogs with a high-carbohydrate meal 10 h before the experiment, together with infusions of glucose, propranolol, and nicotinic acid during the experimental period. Both steady-state and non-steady-state equations were used to determine oleate Ra ([3H]oleate) before, during, and after a stepwise infusion of an oleic acid emulsion. Palmitate Ra did not change during the experiment. Steady-state equations gave the best estimates of oleate inflow approximately 93% of the known oleate infusion rate overall, while errors in tracer estimates of inflow were obtained when non-steady-state equations were used. The metabolic clearance rate of oleate was inversely related to plasma concentration (P less than 0.01). In conclusion, accurate estimates of FFA inflow were obtained when steady-state equations were used, even under conditions of abrupt and recent changes in Ra. Non-steady-state equations, in contrast, may provide erroneous estimates of inflow. The decrease in metabolic clearance rate during exogenous infusion of oleate suggests that FFA transport may follow second-order kinetics.

Concerns for the determination of free fatty acid in cottonseed

1998 ◽  
Vol 75 (10) ◽  
pp. 1321-1324 ◽  
Author(s):  
P. J. Wan ◽  
D. R. Pakarinen ◽  
P. J. Wakelyn
Keyword(s):  
Fatty Acid ◽  
Free Fatty Acid

Determination of the iodine value and the free fatty acid content of waste animal fat blends using FT-NIR

2014 ◽  
Vol 72 ◽  
pp. 72-78 ◽  
Author(s):  
Peter Adewale ◽  
Ogan Mba ◽  
Marie-Josée Dumont ◽  
Michael Ngadi ◽  
Robert Cocciardi
Keyword(s):  
Fatty Acid ◽  
Free Fatty Acid ◽  
Iodine Value ◽  
Free Fatty Acid Content ◽  
Acid Content ◽  
Fatty Acid Content ◽  
Animal Fat

Integrated procedure for the determination of free fatty acid, glycerol, triacylglycerol and prostaglandins in rat epididymal fat pads

Biochimie ◽  
1977 ◽  
Vol 58 (11-12) ◽  
pp. 1413-1415 ◽  
Author(s):  
Christiane Godard ◽  
Bernard Lambert ◽  
Claude Jacquemin
Keyword(s):  
Fatty Acid ◽  
Free Fatty Acid ◽  
Epididymal Fat ◽  
Fat Pads
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