The main objective of this study was to investigate the nature of farinograph absorption (FA) in CWRW flours which is typically lower than CWRS wheats. FA for CWRW genotype samples ranged from 54 - 65%. Phloroglucinol assay of pentosan content (PC) proved to be accurate and precise. The most highly correlated parameters to FA were volume fractions of large (or small) flour particles determined by laser diffraction, protein content, starch damage and water soluble PC. Correlations to FA for these factors were in the range r = 0.40 to 0.68. A promising 4-variable regression model of FA prediction (R2 = 0.64) was developed. CWRW wheats tended to be low in FA due to low levels of wheat hardness, protein content, or PC. Increasing the levels of these parameters by breeding would likely practically improve FA of future CWRW cultivars. An extended abstract is included at the end of this thesis.
| Identifer | oai:union.ndltd.org:MANITOBA/oai:mspace.lib.umanitoba.ca:1993/28570 |
| Date | 18 November 2014 |
| Creators | Wu, Yao |
| Contributors | Sapirstein, Harry (Food Science), Scanlon, Martin (Food Science) Edwards, Nancy (Food Science) Slominski, Bogdan (Animal Science) |
| Source Sets | University of Manitoba Canada |
| Detected Language | English |
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