In the course of our ongoing work on the chemical characterization of Corsican olive oil, we have developed and validated a method for direct quantification of squalene using 13C Nuclear Magnetic Resonance (NMR) spectroscopy without saponification, extraction, or fractionation of the investigated samples. Good accuracy, linearity, and precision of the measurements have been observed. The experi...

1. The total lipid was extracted from Staphylococcus lactis I 3 with chloroformmethanol mixtures and the glycolipid component was isolated by chromatography on silicic acid. 2. Saponification yielded a non-crystalline glycoside for which the structure O-D-glucopyranosyl-(1 -÷6)-O-fi-D-glucopyranosyl-(1 -*1)-D-glycerol has been established by chemical degradations and by comparison with syntheti...

Objective: To compare the physicochemical properties of four brands vegetable oil sold in Ihiala market.
 Methods: The samples were brought from different super stores market and standard methods used to analyze various samples.
 Results: analysis showed that peroxide value, saponification values, acid ester value glycerol palm kernel (43.91 ± 0.01, 1234.20 74.14 38.56 0.02, 1195.60 0...

Due to routine maintenance of aircraft on the concrete pavement at army airbases, a large part surface is often found saturated with different hydrocarbon-based oil, fuel, and fluid. In addition, subjected aircraft’s exhaust temperature during operation. This study examined resistance ability 3 cementitious materials: (i) epoxy, (ii) fly ash (FA) based geopolymer various alkali (AL/FA) ratios (...

Pigment I (4,4/-diapocarotene-4-oic acid). — This component comprised about 8% of the total pigment content and was relatively nonpolar. The UV/VIS-absorption spectrum in ethanol showed two maxima at 477 and 508 nm and an inflexion at 456 nm. Saponification, acetylation, and reduction tests (NaBH4) were negative. The acidic nature of the pigment pointed to the presence of a carboxylic group. Th...

A method for measuring cholesterol in 0.1 ml. of blood serum is described. This uses the saponification and extraction procedure of Abell et al. (4) and the color reaction of Zlatkis et al. (7). The procedure is shown to be accurate and reproducible. It is compared with several commonly used proceduresand shown to be equal or superior to these. An adaptation of the method to filter-paper stored...

to recent volumes of the Indian Medical Gazette, e.g., an article on rupture of the spleen which does not refer to the papers of Lieutenant-Colonel D. G. Crawford, or on c/avja insanity which knows not the papers by Ewens and Robertson-Milne or one on saponification which omits reference to the various papers in recent years discussing adipocere in India can scarcely be called up to date. In sp...

Figure 1. Right leg with painful ulcer demonstrating thrombosed blood vessels, saponified fat, and ischemic skin necrosis. DESCRIPTION A 56-year-old man presented with a wound of the right leg for 6 weeks that progressed from a linear ulceration with surrounding erythema to an excruciatingly painful ulcer with fat saponification and visible thrombosed vessels. His medical history was significan...

This research investigated the water influence on biodiesel production via transesterification, and especially their kinetic parameters. The initial rate of transesterification was increased with increasing amount (0–5 wt%). On contrary, significantly reduced for concentration 8–15 wt%. Moreover, when yield reached maximum value 30–40%, saponification as a side reaction became more significant ...

The use of derivatization in the analysis of food additivies by chromatographic means has been reviewed. The large majority of these derivatization techniques are employed to facilitate the gas-liquid chromatographic quantitation of various food additives. Silylation, alkylation, acylation, as well as transesterification, saponification, and chemical decomposition techniques are discussed. The ...