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AACC International Approved Methods - AACC Method 30-40.01. Unsaponifiable Matter

AACC International Approved Methods

Crude Fat

AACCI Method 30-40.01
Unsaponifiable Matter

VIEW METHOD

Objective
Macaroni products are hydrolyzed in concentrated HCl (1 + 1) and saponified by the addition of KOH pellets. Aqueous layer containing soaps is separated, and ether layer is washed several times with dilute KOH. Ether is slightly acidified, filtered, and dried, and residue weight is corrected by reagent blank. Residue is reported as % unsaponifiable matter. This method is applicable to macaroni and other extruded pasta products.