Determination of selected protoporphyrins in parma ham with use of 5,10,15,20-tetra(4-hydroxyphenyl)porphyrin as a surrogate standard in the recovery study

Acta Chim Slov. 2014;61(4):771-7.

Abstract

A high-performance liquid chromatographic method for the determination of hemin, protoporphyrin IX (PPIX), and zinc(II)protoporphyrin IX (Zn(II)PPIX) in Parma ham was developed. The detection was done by means of a universal DAD-detector, whereby quantification of the three naturally occurring protoporphyrins was carried out at lambda = 414 nm, i.e., very close to the respective maxima of their Soret bands. The extraction thereof from the meat matrix was done by a mixture of acetone and chloroacetic acid (100 mL + 0.2 g). Usage of 5,10,15,20-tetra(4-hydroxyphenyl)porphyrin (THPP) as a surrogate standard and its detection fixed at lambda = 444 nm, allowed to obtain accurate (ca. 96%) recovery results. Established concentrations of hemin, Zn(II)PPIX, and PPIX in the Parma ham samples were 15.97, 19.96 and 1.52 µg g(-1), respectively.

MeSH terms

  • Animals
  • Chromatography, High Pressure Liquid
  • Food Analysis / methods*
  • Hemin / analysis
  • Meat / analysis*
  • Porphyrins / chemistry*
  • Protoporphyrins / analysis
  • Swine

Substances

  • Porphyrins
  • Protoporphyrins
  • 5,10,15,20-tetra(4-hydroxyphenyl)porphyrin
  • Hemin