Lipids 2022-23 (1) PDF
Document Details
Uploaded by CherishedNeumann
KU Leuven
2022
null
Inge Holsbeeks
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Summary
These are lecture notes on lipids for a first-year engineering technology course at KU Leuven in 2022. The notes cover various aspects of lipid structure and function, ranging from biological functions and fatty acids to detailed chemical structures and glycerides.
Full Transcript
2. Lipids Inge Holsbeeks Biotechnology 1ste stage bachelor engineering technology 2022-23 Lipids 1. Biological function of lipids 2. Fatty acids 3. Glycerides Neutral glycerides Phospholipids 4. Nonglyceride lipids Sphingolipids Steroids...
2. Lipids Inge Holsbeeks Biotechnology 1ste stage bachelor engineering technology 2022-23 Lipids 1. Biological function of lipids 2. Fatty acids 3. Glycerides Neutral glycerides Phospholipids 4. Nonglyceride lipids Sphingolipids Steroids 5. The structure of biological membranes 6. References 2 Lipids 1. Biological function of lipids Energy source and storage Cell membrane structural components Hormones Vitamins and vitamin adsorption Protection Insulation 3 Lipids 1. Biological function of lipids Different types of lipids 4 Lipids 2. Fatty acids Fatty acids (FA): long-chain monocarboxylic acids (-COOH) even number of carbon atoms Saturated FA: CH3(CH2)nCOOH Carboxyl group Stearic acid – C18 - CH3(CH2)16COOH 5 Lipids 2. Fatty acids Saturated FA Melting point ~ chain length Animal FA have high portion of saturated FA 6 Lipids 2. Fatty acids Saturated FA: CH3(CH2)nCOOH All single – saturated C-C bonds Unsaturated FA: at least 1 double = unsaturated C=C bond Oleic acid – C18- CH3(CH2)7CH=CH(CH2)7COOH 7 Lipids 2. Fatty acids Saturated FA Melting point ~ chain length Unsaturated FA: Number of unsaturated bonds ~1/melting point Plants FA have high portion of unsaturated FA 8 Lipids 2. Fatty acids Fatty acids (FA): numbering C-atoms Cis 9 Lipids 2. Fatty acids Cis >
