Chemometrics of Wheat Composites with Hemp, Teff, and Chia Flour: Comparison of Rheological Features.

Int J Food Sci

Department of Carbohydrates and Cereals, Institute of Chemical Technology in Prague, Technická 5, 166 28 Prague 6, Czech Republic.

Published: March 2016

The mixolab, a rheological device developed recently, combines approved farinograph and amylograph test procedures. Analysing wheat flour composites with hemp, teff, or chia in terms of all three mentioned rheological methods, correspondence of farinograph, and amylograph versus mixolab features was examined by principal component analysis. The first two principal components, PC1 and PC2, explained 75% of data scatter and allowed a satisfying confirmation of presumed relationships between farinograph or amylograph and mixolab parameters. Dough development time and stability were associated with gluten strength (C1 torque point) and also dough softening (mixing tolerance index) had a link to protein weakening (C1-C2 difference). In the second mentioned case, amylograph viscosity maximum and amylase activity (C3-C4) closeness was verified. Starch and starch gel properties during mixing (C3, C3-C2, and C4) affect dough viscosity (C1) and rheological behaviour (dough development time and stability). Another important finding is unequivocal distinguishing of the composite subsets (of hemp, teff, and chia ones) by the used rheological methods and statistical treatment of multivariable data.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4756576PMC
http://dx.doi.org/10.1155/2013/968020DOI Listing

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