Multi-scale characterization of pasta during cooking using microscopy and real-time magnetic resonance imaging
Artikel i vetenskaplig tidskrift, 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.

MRI

Gluten

Salt

Real-time

Starch

Spaghetti

Författare

Diana Bernin

Göteborgs universitet

Thomas Steglich

Chalmers, Kemi- och bioteknik

SuMo Biomaterials

Magnus Röding

Chalmers, Matematiska vetenskaper, matematisk statistik

Göteborgs universitet

SuMo Biomaterials

Annelie Moldin

Lantmännen Cerealia

D. Topgaard

Lunds Universitet

Maud Langton

Sveriges lantbruksuniversitet

Food Research International

0963-9969 (ISSN)

Vol. 66 132-139

Ämneskategorier

Industriell bioteknik

Livsmedelsvetenskap

DOI

10.1016/j.foodres.2014.09.007