Vitamins

Vitamins are organic compounds that are essential for vital processes and functions in the body. They are essential, i.e. they must be taken in with food and cannot be synthesised in sufficient quantities by the human body itself. A distinction is made between water-soluble and fat-soluble vitamins. Water-soluble vitamins are mainly analysed by liquid chromatography using reversed-phase chromatography or hydrophilic interaction chromatography (HILIC). Fat-soluble vitamins are often analysed using reversed-phase chrom atography or normal-phase chromatography.

 

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Technical Data

1. Water-soluble Vitamins:

Vitamin C (ascorbic acid)
Vitamin B1 (thiamine)
Vitamin B2 (riboflavin)
Vitamin B3 (nicotinic acid; niacin)
Vitamin B5 (pantothenic acid)
Vitamin B6 (pyridoxine, pyridoxal and pyridoxamine)
Vitamin B7 (biotin)
Vitamin B9 (folic acid)
Vitamin B12 (cobalamin)

 

2. Fat-soluble Vitamins:

[English:]

Vitamin A (retinol)
Vitamin D (colecalciferol)
Vitamin E (tocopherol)
Vitamin K (phylloquinone (K1), menaquinone-n (K2), menadione (K3))

 

Applications

Water-soluble vitamins Reversed Phase with MZ-Analysentechnik MZ-Aqua Perfect C18

Peak identities

1. thyamine (vitamin B1) 2. ascorbic acid (vitamin C) 3. nicotinic acid (vitamin B) 4. nicotinamide (vitamin B3) 5. pyridoxal (vitamin B6) 6. pyridoxine (vitamin B6) 7. folic acid (vitamin B9) 8. cyanocobalmin (vitamin B12) 9. riboflavin (vitamin B2)

Test conditions

Column: MZ-Aqua Perfect C18 200x4.0mm, 3µm

Mobile phase A: 0.05 M phosphoric acid

Mobile phase B: 0.05 M phosphoric acid in water/acetonitrile 70/30

Gradient:

Time / min

%A

%B

0

100

0

3

100

0

6

0

100

12

0

100

Flow rate: 1.25 mL/min

Injection volume: 10 µL

Detection: UV, 230 nm

Fat-soluble Vitamins Reversed Phase with GL Sciences Inertsil ODS-4

Peak identities

1. vitamin K3 2. vitamin A 3. vitamin A acetate 4. vitamin D3 5. vitamin E 6. vitamin E acetate 7. vitamin K1 8. α-carotene 9. β-carotene

Test conditions

Column: Inertsil ODS-4 150x4.6mm, 5µm (5020-03945)

Mobile phase A: methanol

Mobile phase B: Ethanol

Isocratic: 75/25 A/B

Flow rate: 1 mL/min

Temperature: 40 °C

Detection: UV, 280 nm

Injection volume: 5 µL

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Manufacturer overview


MZ-Analysentechnik

Water soluble vitamins

HPLC - Reversed Phase:

  • MZ-Aqua Perfect C18, 3µm
  • PerfectSil Target ODS-3 HD, 5µm

AMT

Water soluble vitamins

UHPLC - HILIC:

  • HALO 2 HILIC, 2µm

 

Fat soluble vitamins

HPLC - Reversed Phase:

  • HALO PFP, 2.7µm

ChromaNik

Water soluble vitamins

HPLC - Reversed Phase:

  • Sunniest RP-Aqua, 5µm
  • SunShell RP-Aqua, 2.6µm

 

Fat-soluble vitamins

HPLC - Reversed Phase:

  • Sunrise C18-SAC, 3µm
  • SunShell C18, 2.6µm


Imtakt

Water-soluble vitamins

HPLC - Normal Phase/IEX

  • Unison UK-Amino, 3µm
  • Unison UK-Silica

 

Fat-soluble vitamins

HPLC - Reversed Phase:

  • Cadenza CD-C18
  • Unison UK-Silica

Macherey-Nagel

Water-soluble vitamins

HPLC - Reversed Phase:

  • Nucleoshell RP 18plus, 2.7µm

 

HPLC - HILIC:

  • Nucleodur HILIC, 3µm

 

Sample preparation:

  • Chromabond HILIC

 

Fat-soluble vitamins

HPLC - Reversed Phase:

  • Nucleosil 100 C18, 5µm
  • Nucleodur C18 Isis, 5µm

 

Sample preparation:

  • Chromabond XTR

Nouryon - Kromasil

Water soluble vitamins

HPLC - HILIC:

  • Kromasil 60 HILIC-D, 5µm

 

Fat-soluble vitamins

UHPLC - Reversed Phase

  • Kromasil EternityXT-1.8-C18, 1.8µm

Shodex

Water soluble vitamins

HPLC - Reversed Phase:

  • Asahipak ODP-50 6D, 5µm

 

Fat-soluble vitamins

HPLC - Normal Phase:

  • Silica 5SIL 4D, 5µm

 


Tosoh

Water soluble vitamins

HPLC - Reversed Phase:

  • TSKgel ODS-100V, 5µm

 

Fat-soluble vitamins

HPLC - Reversed Phase

  • TSKgel ODS-100V, 5µm

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