Groundnut fatty acids

So, clustering techniques have been used for classification. Piepponen et al. applied a hierarchical cluster analysis (CLUSTAN) to the classification of food oils (groundnut, soya, sunflower and maize) by their fatty acid composition. The dendrogram of the distances shows four weU-separated clusters. Some suspect commercial samples of sunflower oil fall near the cluster of soya oils, so far from the clainud class that they cannot be consider i genuine. 

Allen A, Padley GH, Whalley GR. Fatty acid composition of some soapmaking fats and oils. Part 4 groundnut (peanut oil). Soap Perfum Cosmet 1969 42 725-726. 

The composition of fatty acids in position-1 is also somewhat different from that in position-2 (Table 5.3) in the position-1, saturated acids prevail, while position-2 is primarily occupied by unsaturated fatty acids. The unsaturated fatty acid content bound in position-2 was 97.3%, 91.4%, and 95.9% in egg, cottonseed, and groundnut phospholipids, respectively (Vijayalakshmi and Rao, 1972). 

Oleic acid Is one of the most abundant constituent fatty acids of animal and plant fats, occurring In butterfat, lard, tallow, groundnut oil, soya-bean oil, etc. Its systematic chemical name is cls-octadec-9-enolc acid. 

The groundnut or peanut is made up of the outer shell or hull, the seed coat, or testa and the kernel. The hull is separated either by hand or mechanically and the oil extracted by expelling and subsequent solvent extraction. The oil is pale yellow and has the flavour and odour of peanuts. A number of alternative oil extraction procedures have been proposed (Ayres, 1983). Crude oil can have a free fatty acid content as low as 0.3% but most commercial oil is in... 

In many respects, the fatty acids of groundnut and sunflowerseed oils lie on either side of that for maize oil. This means that blends of groundnut and sunflowerseed oil can have fatty acid compositions very close to that of maize oil and the mixture of groundnut and sunflower oils is therefore very difficult to detect if used as an adulterant for maize oil. The purity of maize oil has in fact been very difficult to establish for a variety of reasons. As just explained, the fatty acid composition data are difficult to interpret, whilst sterol data are equally difficult because maize oil has far more sterols than the other vegetable oils. In any blend, the maize oil sterols therefore swamp those of any adulterant, with the result that the final mixture still corresponds to that of maize. Other methods of establishing maize oil purity were therefore explored, leading to the technique of stable carbon isotope ratio measurement. 

The acid value is a measure of the amount of free fatty acids in the fat. An appropriate acid number, so a correct amoimt of free fatty acids, of groundnut oil is important in the preparation of Zinc oxide calcium hydroxide weak paste FNA (see Table 12.39). The... 

Fatty acid Coconut Com (maize) Cottonseed Groundnut Olive Palm Peanut Sesame Soya Green leaf Margarine ... 

Sodamade, A., Oyedepo, T. A., Bolaji, 0. S., (2013). Fatty Acids Composition of Three Different Vegetable Oils (Soybean Oil, Groundnut Oil and Coconut Oil) by High-Performance Liquid Chromatography. Chemistry and Materials Research 3, 26-29. 

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