After potato, tomato (Solanum lycopersicum) is the world?s second-largest vegetable crop. More than 80% of consumption comes from processed products such as ketchup, juice, pickled tomatoes, sauces, paste, pur?e. Samples mild ketchup two different manufacturers (A and B) were selected for analysis content natural food colors E160a E160d. Using a UV-Vis spectrophotometric method Lambert-Beer law...

A simple spectrophotometric assay was developed for peroxisomal fatty acyl-CoA oxidase activity. The assay, based on the H2O2-dependent oxidation of leuco-dichlorofluorescein catalysed by exogenous peroxidase, is more sensitive than methods previously described. By using mouse liver samples, cofactor requirements were assessed and a linear relationship was demonstrated between dye oxidation and...

Methods: The study was initiated by preliminary phytochemical screening to detect the presence of carbohydrates, flavonoids, alkaloids, saponins and tannins. Quantitative analysis of phenolic and flavonoids was carried out by Folins Ciocalteau reagent method. In vitro antioxidant activities were performed by DPPH free radical scavenging assay, Reducing power assay, Total antioxidant assay and T...