Organic Acids in Vinegar (KC-811)

Organic acids in vinegar were analyzed using RSpak KC-811, a column for organic acids analysis. Chromatograms (1) and (2) are the analysis results of grain vinegar and pure rice vinegar samples, respectively. The compositions of organic acids in different vinegars vary largely depend on their ingredents, and this composition difference is thought to affect the flavor.

Sample: Vinegar, 20 μL

  1. Vinegar (1)                   Vinegar (2)
  2. 1.Citric acid                1.Phosphoric acid
  3. 2.Tartaric acid            2.Citric acid
  4. 3.Malic acid               3.Tartaric acid
  5. 4.Succinic acid          4.Gluconic acid
  6. 5.Acetic acid              5.Malic acid
  7. 6.-                               6.Succinic acid
  8. 7.-                               7.Lactic acid
  9. 8.-                               8.Fumaric acid
  10. 9.-                               9.Acetic acid
  11. 10.-                             10.Propionic acid
Shodex RSpak KC-G 8B (8.0 mm I.D. x 50 mm) + KC-811 (8.0 mm I.D. x 300 mm) x 2
3 mM HClO4 aq.
Flow rate
(Eluent); 1.0 mL/min, (Reagent); 0.7 mL/min
VIS (430 nm) *Post column method
Column temp.
50 ℃

Sample Name Index

Operation Manual / Certificate of Analysis

Operation Manuals and Certificate of Analysis / Inspection Certificate for the following products can be downloaded here.

Product Name Index


Applications (Related Information)