Week 1

Nutrients

Minerals

Text Transcript

Time: 2.45

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• Chemical composition: inorganic compounds; elements
• Functions
• Structural
• Biochemical reactions
• Digested to ionic form
• Absorption
  • Small intestine
• Factors influencing absorption efficiency
• Mineral form
• Relative concentrations of dietary minerals
• Other dietary minerals
• Presence of dietary lipids
• Physiological factors
• Classification
• Concentration in body and dietary requirement
• Macrominerals
• Concentration greater than 100 ppm
• Table 2.2 – Macrominerals

Table 2.2 - Macrominerals & Abbreviations

Micromineral	Abbreviation
Calcium	Ca
Chlorine	Cl
Magnesium	Mg
Phosphorus	P
Potassium	K
Sodium	Na
Sulfur	S

• Microminerals or trace minerals
• Concentration less than 100 ppm
• Table 2.3 – Microminerals

Table 2.3 - Microminerals & Abbreviations

Micromineral	Abbreviation
Chromium	Cr
Cobalt	Co
Copper	Cu
Fluorine	F
Iron	Fe
Iodine	I
Manganese	Mn
Molybdenum	Mo
Nickel	Ni
Selenium	Se
Silicon	Si
Zinc	Z

• Requirements
• Vary by species and physiological state
• Deficiencies and toxicities – subclinical and clinical