726
HPLCCHROMATOGRAMS |
FOODS&FLAVORS
Preservatives
CarboxylicAcidsonUltraAqueousC18
Peak List:
Conc. (µg/mL):
1. malonic acid
500
2. lactic acid
500
3. acetic acid
1,000
4. citric acid
1,000
5. succinic acid
2,000
6. fumaric acid
10
Sample:
Inj.:
10µL
Solvent:
water
Column:
Ultra Aqueous C18
Cat.#:
9178565
Dimensions:
150mm x 4.6mm
Particle size:
5µm
Pore size:
100Å
Conditions:
Mobile phase:
50mM potassium
phosphate, pH 2.5:
acetonitrile (99:1)
Flow:
1.5mL/min.
Temp.:
25°C
Det.:
UV@ 210nm
LC_0140
1
2
3
4
5
6
0
1
2
3
4 min.
LC_0297
CarboxylicAcids (PyruvicandLactic)on
UltraAqueousC18
Conc.
Peak List:
(mg/mL)
1. pyruvic acid
5
2. lactic acid
50
Sample:
Inj.:
5µL
Solvent:
50mM potassium
phosphate, pH 2.5
Column:
Ultra Aqueous C18
Cat.#:
9178565
Dimensions:
150mm x 4.6mm
Particle size:
5µm
Pore size:
100Å
Conditions:
Mobile phase:
50mM potassium
phosphate, pH 2.5
Flow:
1.0mL/min.
Temp.:
26°C
Det.:
UV@ 210nm
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Mar 2011
