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Effects of pearling level and genotype on physical grain characteristics, composition, and technological and sensory properties of selected western Canadian barley varieties

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dc.contributor.supervisor Malcolmson, Linda (Human Nutritional Sciences) Izydorczyk, Marta (Food Science) en
dc.contributor.author Humiski, Lisa
dc.date.accessioned 2011-04-08T21:14:17Z
dc.date.available 2011-04-08T21:14:17Z
dc.date.issued 2011-04-08T21:14:17Z
dc.identifier.uri http://hdl.handle.net/1993/4500
dc.description.abstract Limited information exists regarding the effects of light pearling on the properties of physical grain characteristics, composition, and technological and sensory properties of selected varieties of Western Canadian barley especially hulless barley genotypes with modified starch characteristics. Nine barley genotypes with different hull (hulled and hulless) and starch characteristics (normal, waxy, and high amylose (HA)) were pearled to three differing levels. Scanning electron micrographs showed that the pericarp, testa, aleurone, and subaleurone layers were completely removed in heavily pearled barley whereas only a few outer layers were removed in minimally pearled barley. Waxy starch genotype Fibar and HA starch genotypes, SH99250 & SB94893 contained high levels of soluble β-glucan (9-11%). Waxy starch genotypes exhibited higher β-glucan solubility when cooked compared to normal and HA starch genotypes. However, HA starch genotypes had lower in vitro starch digestibility which may provide a lower glycemic response in humans. en
dc.format.extent 5084550 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US
dc.subject barley en
dc.subject hulless en
dc.subject b-glucan en
dc.subject pearl en
dc.subject waxy en
dc.subject high amylose en
dc.subject whole grain en
dc.title Effects of pearling level and genotype on physical grain characteristics, composition, and technological and sensory properties of selected western Canadian barley varieties en
dc.degree.discipline Human Nutritional Sciences en
dc.contributor.examiningcommittee Taylor, Carla (Human Nutritional Sciences) Cenkowski, Stefan (Biosystems Engineering) en
dc.degree.level Master of Science (M.Sc.) en
dc.description.note May 2011 en


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