[Comparison study between fatty acids of pomegranate seed oil laboratory extracted and commercial oils]

Seed oil content and fatty acid composition of 6 commercially important pomegranate cultivars and 2 local commercial pomegranate seed oils were determined. The oil content of pomegranate seeds of the 6 cultivars ranged between 13.32 and 18.1% [d.b]. Palmitic, stearic, oleic, linoleic, arachidic, acid contents of the oils ranged between 1.5-5.9, 2.5-3.5, 6.2-9.15, 6.7-10.82, 0.47-0.58%, respectively. The predominant unsaturated fatty acid was punicic acid [68.3-73.5%], which is considered to enhance the oil quality and is of importance to health. However, the 2 commercial seed oils didn't contain the punicic acid. Palmitic, stearic, oleic, linoleic, alpha-linolenic acid contents of the oils ranged between 9.81-11.87, 4.11-4.37, 22.54-22.83, 54.95-56.52, 4.76-5.34%, respectively. Therefore, the commercial pomegranate seed oils do not have the same benefit to health as the cultivar seed oils do

[Determination of fumaric acid in jelly using reversed phase high performance liquid chromatography [RP-HPLC]]

We can precisely determine the preservative Fumaric Acid in Jelly by using a reversed-phased HPLC method, that allows good separation after it is extracted by mean of dissolution. The separation was performed on C18 column within 10 min, by isocratic elution using water adjusted to pH 2.10-2.15 with perchloric acid, and detection was by UV absorption at a wavelength of 210 nm. Analytical characteristics of the separation such as limit of detection, limit of quantification, linear range and precision were evaluated. The developed method was applied for the determination Fumaric Acid in Jelly