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Components of wheat flour as activator of commercial enzymes for bread improvement

Author:
De Gobba, Cristian, Olsen, Karsten, Skibsted, Leif H.
Source:
European food research & technology 2016 v.242 no.10 pp. 1647-1654
ISSN:
1438-2377
Subject:
1-propanol, amylases, breads, cassava, cassava flour, ethanol, food research, fractionation, globulins, heat, molecular weight, solubilization, wheat, wheat flour, xylanases
Abstract:
Aqueous extracts of wheat flour and of flour made from 30 % cassava and 70 % wheat were found to influence the activity of amylases (Fungamyl® and Novamyl® were tested) and xylanases (Panzea® and Pentopan Mono® were tested), with an activation of Fungamyl® and Panzea® by a factor of two, while extract from cassava flour alone had no effect. A fractionation of the active extracts showed that high molecular weight components from wheat were responsible for increased activity, which, for Fungamyl®, was sensitive to heating of the extract at 100 °C for 15 min. For Panzea®, instead, the increase in activity was comparable for boiled and non-boiled extract. Osborne fractionation of the wheat extract showed that the highest increase in Fungamyl® activity could be assigned to salt solubilized components in the extract, while Panzea® showed an increased activity in presence of ethanol extract and propanol extract. Among the most abundant proteins in the active fractions, globulins were identified by LC–MS/MS as an enhancer of Fungamyl® activity, while the heat-insensitive component involved in enhancement of Panzea® remained unexplained.
Agid:
5489247