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[PDF] Lipids
Lipid is the collective name for fats, oils, waxes and fat-like molecules (such as steroids) found Each fatty acid has a carboxylic acid (-COOH) group
[PDF] The lipid classes and fatty acids as principal components
Lipids are chemical structures with biological roles in What is LIPIDOMICS 3 fatty acid units (hydrophobic) of different composition L-glycerol
[PDF] Effects of saturated fatty acids on serum lipids and lipoproteins
fatty acids is a major determinant of the serum lipid and lipoprotein profile 1 2 Objectives differences between the intervention groups at baseline
[PDF] Question with Answers- Lipids
The structures of different types of lipids are studied and compared (Questions 1-8) 1 _____ Which of the following molecules is a typical fatty acid?
[PDF] Experiment 12 –Lipids Structures of Common Fatty Acids
There are many different categories of lipids and each category has saturated fatty acid contains no carbon-carbon double bonds, so it is “saturated”
[PDF] an Hypothesis for the Lipid-Lowering Effect of Unsaturated Fatty Acids
lowest initial values Comparison between effects of dietary fat on plasma lipid concentrations and fatty acid compositions In pa-
[PDF] Lipids
Lipid is the collective name for fats, oils, waxes and fat-like molecules (such as is a triglyceride, synthesised from glycerol (propane-1,2,3-triol) and fatty acids
3 Lipids
The observed differences in solubility can be uti- lized for separation of saturated from unsaturated fatty acids The mixture of acids is dissolved at
[PDF] Fatty Acids - UiO
Fatty acids, both free and as part of complex lipids, play a Figure 2 Structure of different unbranched fatty acids with a methyl end and a carboxyl (acidic) end
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76557_705_Lipids.pdf Lipids
Lipid is the collective name for fats, oils, waxes and fat-like molecules (such as steroids) found in the
body. Their roles include: components of cell membranes (phospholipids and cholesterol) energy stores chemical messengers (steroid 'hormones') protection, waterproofing, insulation and buoyancy agents. The basic unit of lipids is a triglyceride, synthesised from glycerol (propane -1,2,3-triol) and fatty acids. Glycerol is a type of alcohol. Alcohols are organic compounds. Their molecules are characterised by hydroxyl groups, -OH. Glycerol is a trihydric alcohol, which means each molecule has three hydroxyl groups.Glycerol
Fatty acids
Fatty acids are also organic compounds. Each fatty acid has a carboxylic acid (-COOH) group. Some fatty acids are saturated. These means all carbon-carbon bonds are single covalent bonds. Other fatty acids are unsaturated. This means that while most carbon -carbon bonds are single covalent bonds, some are double bonds.Saturated fatty acid
Unsaturated fatty acid
Esters
Alcohols react with carboxylic acids to form esters R 1OH + R
2COOH R
2 COOR 1 + H2O As with the formation of glycosidic and peptide bonds, this is a condensation reaction. A water molecule splits out. The glycerol molecule has three hydroxyl groups. When one reacts with a fatty acid a monoglyceride forms. When two react with two fatty acid molecules a digylceride forms. And when three react with three fatty acid molecules a trigylceride forms.Triglycerides formed between glycerol and unsaturated fatty acids are usually oils. Those formed with
saturated acids are usually fats.Phospholipids
Phosphoric acid is an inorganic compound. Its molecular formula is H3PO4. Like fatty acids, it canreact with alcohols to form esters (in this case, usually called phosphate esters). In phospholipids, one
of the fatty acids of a triglyceride is substituted by a phosphate group. Phospholipids have a key role in the structure and properties of cell membranes.