Division 6.5 Quantitative evaluationF1

United Kingdom

The peak areas of 1-eicosanol and of the aliphatic alcohols C22, C24, C26, C28 are calculated by a data acquisition system. The response factor for 1-eicosanol should be considered equal to 1.

Calculate the areas of the α-cholestanol and the sterol and triterpene dialcohols peaks by using the computing system. Ignore peaks for any compound, which are not included (ergosterol must not be calculated) among those listed in Table 1. The response factor for α-cholestanol should be considered equal to 1.

Calculate the concentration of each individual alcoholic compound, in mg/kg of fatty material, as follows:

$Alcoholic compound x = \frac{A_{x} \times m_{s}}{A_{s} \times m} \times 1000$

where:

A _x

Peak area for alcoholic compound x, in computing system counts.

A _s

Area of the 1-eicosanol/α-cholestanol peak, in computing system counts.

m _s

Mass of added 1-eicosanol/α-cholestanol, in milligrams.

Mass of the sample used for determination, in grams.

Annotations

Textual amendments

F1: Substituted by Commission Implementing Regulation (EU) 2019/1604 of 27 September 2019 amending Regulation (EEC) No 2568/91 on the characteristics of olive oil and olive-residue oil and on the relevant methods of analysis.