Pharmacognosy Phytochemistry I: The Chemistry of Natural Products

Carbohydrates and derived products

Topic overview

Start with the big picture

The lesson surveys monosaccharides such as glucose and fructose, reducing and non-reducing disaccharides, and major polysaccharides and related materials. It links structure to function through examples including starch, glycogen, inulin, cellulose, mucilages, gums, and pectin. Their pharmaceutical roles range from binders, fillers, and disintegrants to bulk laxatives, suspending agents, and controlled-release materials. The topic also introduces identification and quality-control approaches: color reactions such as Molisch, Benedict, iodine, and ruthenium red tests; chromatography and polarimetry; and microscopy and enzymatic hydrolysis profiles. Together, these themes show how chemical characteristics guide the recognition and application of natural carbohydrate drugs.

Learning objectives

What you'll learn

  • Classify carbohydrates from monosaccharides through polysaccharides and identify representative examples.
  • Relate carbohydrate structure to pharmaceutical and other stated uses.
  • Distinguish selected sugars and polysaccharides using their characteristic chemical reactions.
  • Describe analytical approaches used to authenticate and assess natural carbohydrate materials.
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