engleski

Water absorption determination of wheat flours applying centrifuge and its relationship to Farinograph water absorption determination

The water absorption of flours from German wheat harvested in 2001 and 2002 was determined by standard method using Farinograph and centrifuge as an alternative possibility for the water absorption determination. Determination of centrifuge water absorption (CWA) was performed with 2 g (harvest 2001 and 2002) and 4 g (harvest 2002) of wheat flour applying preliminary determined “ best centrifugation conditions” . Obtained results of centrifuge water absorption (CWA) and farinograph water absorption (FWA) were compared by statistical analysis. The volume yield of statistically obtained extreme samples was carried out in Rapid-Mix-Test for rolls using both FWA and from CWA calculated predicted water absorption (PWA). The volume yields of rolls were compared. The variations between operators during water absorption determination using centrifuge were also investigated. High linear correlation was obtained between CWA and FWA results in all investigated groups. In extreme samples differences in volume yield influenced by differences of used water absorption were not found. Variation between operators did not show any significant differences in CWA determination.

water absorption; wheat flours; farinograph; centrifuge

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