Table 2 Quantification of PA and SA in skimmed milk.

From: Development of an optimized sample preparation method for quantification of free fatty acids in food using liquid chromatography-mass spectrometry

FFA

Extraction method

Ep (pmol)

MeOH washed GLASSCO (pmol)

Blank

Skimmed milk

Blank

Skimmed milk

PA

Folch

380 ± 130

840 ± 170

110 ± 50

680 ± 90

B/D

310 ± 10

1000 ± 130

50 ± 10

71 ± 60

SA

Folch

650 ± 150

660 ± 120

320 ± 60

330 ± 80

B/D

510 ± 80

530 ± 70

210 ± 40

300 ± 40

  1. Blank indicates the amount of FFA contaminants extracted from an empty tube without the introduction of skimmed milk. Data are presented as the mean ± SD (n = 3).
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