Vitamin Stability

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External Variables Effecting Vitamin Stability
Vitamin Temperature Humidity Oxygen Acid Alkaline Light
Retinol (A) xx x xx x o xx
Thiamine (B1) x x x o xx x
Riboflavin (B2) o x o o o x
Pyridoxine (B6) xx x o x o x
B12 x x x o o o
Cholecalciferol (D3) x x xx x o x
Tocopherol (E) x x o x x x
Calcium pantothenate (B5) x x o o o o
Nicotinic acid (B3) o o o o o o
Biotin (B7) o x o o o x
Folic acid (B9) xx x o xx o xx
Ascorbic acid (C) o xx xx o x o
(o stable x slightly sensitive, xx very sensitive) Source: Gadient, 1986

 (NB: 'very sensitive' refers to a reduction of around 20% after variable exposure)

Relative Lost Activity of Vitamins in Commercial Premixes
Lowest Calcium pantothenate (B5)
  Tocopherol (E)
  Riboflavin (B2)
  Biotin (B7)
  Nicotinic acid (B3)
  Cholecalciferol (D3)
  Folic acid (B9)
  Thiamine (B1)
  Pyridoxine (B6)
Highest Retinol (A)
Source: Shurson et al. (1996)


Beadlet vs. Spray Dried Product Types
Characteristics Spray-Dried Beadlet
Stability Medium - High High
Granulometry Fine Powder Fine Granular
Homogeneity of mix High Medium
Flowability Medium High
Solubility in water Good Medium
Caking Medium - High Low
Source: Frye (1994)