Monday, 23 March 2015

Carbohydrates and Triglycerides




Isomers: same molecular formula but different structural formula 


Carbohydrates: 
  • Monosaccharides - sweet, water soluble, reducing sugars (test-benedicts),
  • Disaccharides - sweet, water soluble, all but sucrose are reducing sugars,
  • Polysaccharides - long chains of repeating subunits (monosaccharides) joined by condensation reactions,
  • Sucrose —> Glucose + Fructose
  • Lactose —> Glucose + Galactose
  • Maltose —> Glucose + Glucose

Triglycerides:
 Fatty acid chains can be SATURATED (they contain no carbon-carbon double bonds)  or UNSATURATED (they do contain carbon-carbon double bonds). The more unsaturated the fatty acid the lower the melting point. Fats are insoluble in water. 

Formation of a Triglyceride: 

      

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