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High Pressure Research
An International Journal
Volume 19, 2000 - Issue 1-6
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Original Articles

On the nature and the practical relevance of the molecular modifications induced in wheat proteins by high pressure treatment

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Pages 167-173 | Received 09 Sep 1999, Accepted 28 Feb 2000, Published online: 19 Aug 2006
 

Abstract

Modifications induced by the combined application of pressure (up to 800 MPa) and temperature (up to 80° C) were studied on wet and dry semolina, and on fresh pasta as such and after cooking. Rheological and immunochemical properties of the treated products were investigated, along with parameters indicating the extent of protein denaturation. No modification occurs in semolina treated at less than 45% water, below 60°C/800MPa for 10min. Egg noodles prepared from pressure/heat treated semolina had increased protein digestibility and low recognition by anti-gliadin antibodies either before or after cooking. The same effects were observed in heat/pressure treated pasta, but were lost upon subsequent cooking, although we found decreased immunochemical reactivity after heat/pressure treatment of cooked pasta. No sensory difference was found between cooked and pressure-treated semolina products.

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