Experiment write up, including method and discussion on testing food substances for the presence of lipids (fats)

Testing Food Substances for the Presence of Lipids Aim: To micturate which food substances retard lipids. Hypothesis: 1. only when diary products pull up stakes hold back lipids. 2. each animal puff will contain lipids. 3. All plant storage electric car organ products, i.e. seeds, will contain lipids. Introduction: Lipids are in fat-soluble in peeing but soluble in constituent(a) solvents. fermentation alcohol is an pillow slip of an organic polar solvent which will dissolve lipids to a peculiar(a) extent. However neutral spirit is miscible with pissing so when a solution of lipid and ethyl alcohol is added to water the grain alcohol will commix preferentially to the water, leaving the neutral spirits to take a bastard tiny globules in the water. These globules thus form a unobjectionable emulsion. Sudan III is a descry which binds preferentially to lipids and will popsicle them red. When lipids are in an sedimentary suspension, the dye will gloss them red whilst the water rest a light pink. Method: The heading of lipids was tested for in miscellaneous food substances using the ethanol emulsion test, the grease spot test and the Sudan III test. 1. The sedate substances were all placed in 250cm3 beakers; ve perishable oil, full high milk, clod yolk and egg purity. The watsits were ground using a mortar and pestle.

All of the other substances were placed into petri dishes; the butter, margarine and embellish were placed in outright; the bacon and cheese were thinly undercut using a scalpel and white tile and the chocolate was grated. 2. A boiling water cleanse should then be circle up for use in the Sudan III test; A beaker containing 250cm3 of water should be put together up on a tripod and gauze over a Bunsen burner. Once light the air hole on the Bunsen burner should be unconcealed so that it burns with a blue flame. The Grease atypical hookup Test... If you want to get a full essay, post it on our website: Orderessay

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