Multi-scale characterization of pasta during cooking using microscopy and real-time magnetic resonance imaging
Journal article, 2014

Macroscopic properties of pasta, such as the texture, are formed during cooking by a complex interplay of water and heat with the structuring agents starch and gluten. The impact of the starch-to-gluten ratio on microstructure and water distribution in pasta was analyzed by a multi-scale approach combining magnetic resonance imaging (MRI) and light microscopy. The cooking process and thus the water distribution was monitored non-invasively using 1H MRI in real-time with a temporal resolution of 45s. Our MRI set-up allowed following the water ingress by imaging the reduction of the uncooked core. The water ingress rate was neither dependent on pasta composition nor on the presence of salt in the cooking media (0.7% NaCl). Starch-rich samples showed a more homogeneous water distribution in the gelatinized zone, which was mirrored in a more homogeneous microstructure. In contrast, gluten-rich samples showed both a heterogeneous water distribution and microstructure. Thus, the gluten content affected local water content in the gelatinized zone but not the water ingress. © 2014 Elsevier Ltd.

Gluten

Spaghetti

Starch

MRI

Salt

Real-time

Author

Diana Bernin

University of Gothenburg

Thomas Steglich

Chalmers, Chemical and Biological Engineering

SuMo Biomaterials

Magnus Röding

Chalmers, Mathematical Sciences, Mathematical Statistics

University of Gothenburg

SuMo Biomaterials

Annelie Moldin

Lantmännen Cerealia

D. Topgaard

Lund University

Maud Langton

Swedish University of Agricultural Sciences (SLU)

Food Research International

0963-9969 (ISSN)

Vol. 66 132-139

Subject Categories

Industrial Biotechnology

Food Science

DOI

10.1016/j.foodres.2014.09.007

More information

Latest update

4/11/2018