Chapter-15 Composition and Metabolism of Lipids

BOOK TITLE: Essentials of Nutrition and Biochemistry for Basic BSc Nursing

1. Clement I
Publishing Year
Author Affiliations
1. RV College of Nursing, Bengaluru, Karnataka, India; Columbia College of Nursing, VSS College of Nursing, Bengaluru, Karnataka, India; Rajiv Gandhi University of Health Sciences, Bengaluru, Karnataka, India; Christian Medical Association of India, New Delhi, Indian Society of Psychiatric Nursing, Bengaluru, Medical Surgical Nursing Society of ndia, Chennai; Indian Society of Neuroscience Nursing, New Delhi; Asian Association of Cardiac Nurses, Kolkata, West Bengal, India; Indian Red Cross Society, Bengaluru, St. Johns Ambulance Association, Bengaluru; National Editorial Advisory Board, New Delhi, Nurses of India (Former) Bengaluru
Chapter keywords
Lipid, fat, oil, wax, biological function, fatty acid, essential fatty acid, biosynthesis, lipid metabolism, ketone body, cholesterol, atherosclerosis, lipoprotein


Lipids are organic compounds of biological nature that includes fats, oils and waxes. They are insoluble in water but soluble in nonpolar solvents such as ether, chloroform and benzene. Lipids are utilizable by living organisms. This chapter covers the biological functions of lipids, fatty acids, essential fatty acids, biosynthesis of fatty acids, lipids classification, properties of lipids, lipid metabolism, disorders of lipid metabolism, ketone bodies, cholesterol, atherosclerosis, lipoproteins, and phospholipids. The fatty acids are the basic units of lipid molecules. Fatty acids are derivatives of aliphatic hydrocarbon chain that contains a carboxylic acid group. Fatty acids required in the diet are called essential fatty acids (EFA). A lipoprotein is a biochemical assembly that contains both proteins and lipids. The lipids or their derivatives may be covalently or non-covalently bound to the proteins. Many enzymes, transporters, structural proteins, antigens, and toxins are lipoproteins.

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