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Chapter 3 Organic Molecules

Chapter 3 Organic Molecules - Chapter 3 Organic Molecules...

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Chapter 3 Organic Molecules Lipids : are hydrophobic in nature 1. Fats 2. Phospholipids 3. Sterols: Fused ring structure, e.g. testosterone, estrogen, cholesterol Fats : 95% of the fats we eat are made of triglycerides Triglyceride is formed when a molecule of glycerol combines with 3 fatty acid chains Depending on the number of hydrogen atoms fats are divided in 2 categories: Saturated and Unsaturated Saturated fa ts found in beef, dairy products, bakery products are saturated with hydrogen atoms. The molecules have a linear structure and are solid at room temperature Two kinds of plant oils that contain saturated fats are palm oil and coconut oil. Unsaturated fats are good fats and are liquid at room temperature. The fat molecule has double bonds and therefore has less number of hydrogen atoms. The double bond produces a kink in the structure. These fats are found in sunflower oil, canola oil, olive oil, etc. Because Unsaturated fats have smaller shelf life food manufacturers hydrogenate them. It
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