IMPORTANCE OF VITAMINS, MINERAL SALTS, ROUGHAGE AND WATER IN HUMAN NUTRITION VITAMINS

IMPORTANCE OF VITAMINS, MINERAL SALTS, ROUGHAGE AND WATER IN HUMAN NUTRITION VITAMINS

  • These are organic compounds that are essential for proper growth, development and functioning of the body
  • Vitamins are required in very small quantities
  • They are not stored and must be included in the diet
  • Vitamins Band C are soluble in water, the rest are soluble in fat
  • Various vitamins are used in different ways

Mineral Salts

  • Mineral ions are needed in the human body
  • Some are needed in small amounts while others are needed in very small amounts (trace)
  • All are vital to human health
  • Nevertheless, their absence results in noticeable mulfunction of the body processes

Water

  • Water is a constituent of blood and intercellular fluid
  • It is also a constituent of cytoplasm
  • Water makes up to 60-70% of total fresh weight in humans
  • No life can exist without water

Functions of Water

  • Acts as a medium in which chemical reactions in the body takes place
  • Acts as a solvent and it is used to transport materials within the body
  • Acts as a coolant due to its high latent heat of vaporisation
  • Hence, evaporation of sweat lowers body temperature
  • Takes part in chemical reactions i.e. hydrolysis
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Vitamins, sources, uses and the deficiency disease resulting from their absence in diet

Functions of Water

  • Acts as a medium in which chemical reactions in the body takes place
  • Acts as a solvent and it is used to transport materials within the body
  • Acts as a coolant due to its high latent heat of vaporisation

Hence, evaporation of sweat lowers body temperature

  • Takes part in chemical reactions ie hydrolysis

Vitamins, sources, uses and the deficiency disease resulting from their absence in diet

Roughage

  • Roughage is dietary fibre and it consists mainly of cellulose
  • It adds bulk to the food and provides grip for the gut muscles to enhance peristalsis
  • Roughage does not provide any nutritional value because humans and all animals not produce cellulase enzyme to digest cellulose
  • In herbivores symbiotic bacteria in the gut produce cellulase that digests cellulose

Also See

DIGESTIVE SYSTEM AND DIGESTION IN HUMANS

TYPES OF MAMMALIAN TEETH

HETEROTROPHISM

ENZYMES

POLYSACCHARIDES

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