MOSH/MOAH in emulsifiers (LC-GC-FID and GCxGC-FID)

Method ring test P2707-MRT is designed for the quantification of MOSH and MOAH by means of LC-GC-FID or similar methods. The quantification of total MOAH by GCxGC-FID is offered as an additional module.

Limits of quantification of 1 mg/kg related to total MOSH resp. total MOAH are necessary for this method ring test.

Two test materials are offered:

a sample of soy lecithin (and the corresponding unspiked material), and
a sample of whey protein (and the corresponding unspiked material).

Spiked levels are within the typical ranges of contaminations of the respective matrix. The results related to the spiked materials are evaluated with respect to the comparability criterion (z-score) as well as with respect to the trueness criterion (70 to 120 % of the spiked level, as far as scientifically reasonable).

P2707-MRT is offered as a method ring test, which means,

the evaluation is not limited to the pure statistical evaluation.
the participants are asked to provide the chromatograms and plots related to the test materials.
the participants are asked to answer a questionnaire related to relevant aspects of the sample preparation and analysis.

The chromatograms as well as the answers related to the questionnaire are summarised in separate parts of the final report. For reasons of fairness, only those participants, which provide details and chromatograms will receive these parts of the report. The data will help to identify shortcomings, built the basis for further discussion and thus help to enhance the quality of the applied method.

Parameters

Test material - soy lecithin

MOSH ≥ C10 to ≤ C16, MOSH > C16 to ≤ C20, MOSH > C20 to ≤ C25, MOSH > C25 to ≤ C35, MOSH > C35 to ≤ C40, MOSH > C40 to ≤ C50, Total MOSH (≥ C10 to ≤ C50), MOAH ≥ C10 to ≤ C16, MOAH > C16 to ≤ C25, MOAH > C25 to ≤ C35, MOAH > C35 to ≤ C50, Total MOAH (≥ C10 to ≤ C50)

Blank material - soy lecithin

Test material - whey protein

Blank material - whey protein

Additional module (GCxGC-FID)

Soy lecithin TM - Total MOAH (≥ C10 to ≤ C50), Soy lecithin BM - Total MOAH (≥ C10 to ≤ C50), Whey protein TM - Total MOAH (≥ C10 to ≤ C50), Whey protein BM - Total MOAH (≥ C10 to ≤ C50)

Expected time schedule

Please register before:
01 January 2027

Dispatch of samples:
01 February 2027

Deadline for reporting results:
01 February 2027

Costs of P2707-MRT

Ring test and material	Amount	Price per unit
MOSH/MOAH in emulsifiers (LC-GC-FID and GCxGC-FID)	–	999 €
Test material - soy lecithin Soy lecithin with MOSH and MOAH.	20 g	included
Blank material - soy lecithin Soy lecithin, unspiked.	20 g	included
Test material - whey protein Whey protein with MOSH and MOAH.	50 g	included
Blank material - whey protein Whey protein, unspiked.	50 g	included
Additional module (GCxGC-FID) Quantification by GCxGC-FID (total MOAH).		380 €

Note: PROOF-ACS reserves the right to cancel tests in case of less than ten participants.