GlutoPeak profile analysis for wheat classification: Skipping the refinement process

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Journal of Cereal Science, ISSN: 0733-5210, Vol: 79, Page: 73-79

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Cristina Malegori, Silvia Grassi, Jae-Bom Ohm, James Anderson, Alessandra Marti
Elsevier BV
Agricultural and Biological Sciences, Biochemistry, Genetics and Molecular Biology
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The GlutoPeak test can predict wheat flour quality by measuring gluten aggregation properties in a short time and using a small amount of sample; thus it has usefulness along the entire wheat delivery chain. However, no information on the suitability of this new test on whole grain flours is available. In this contest a multivariate approach was used to assess the GlutoPeak test ability to predict dough quality directly from whole grain flour. GlutoPeak test was performed on both refined and whole grain flours (22 samples), obtaining both profiles and calculated indices, which were subjected to data exploration through Principal Component Analysis. Results suggested a trend according to farinographic stability values. Furthermore, k-Nearest Neighbours classification models were developed using the GlutoPeak profiles to predict farinographic stability, leading to average prediction ability of 81.8% for both refined and whole grain flour data. The present outcome suggests the possibility of predicting farinographic stability by GlutoPeak test directly on whole grain flour, thus skipping the refinement process.

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