Submitted to: Meeting Abstract
Publication Type: Proceedings
Publication Acceptance Date: 9/9/2015
Publication Date: 1/1/2016
Citation: Yadav, M.P., Hicks, K.B. 2016. Barley hulls and straw constituents and emulsifying properties of their hemicelluloses. In: Proceedings of the 18th Gums and Stasbilisers for the Food Industry Conference, June 23-26, 2015, Glyndwr University, Wales, UK, p. 99-109.
Technical Abstract: Barley hulls (husks) are potential by-products of barley ethanol production. Barley straw is an abundant biomass in the regions producing barley for malting, feeds, and fuel ethanol. Both barley hulls and straw contain valuable hemicelluloses (arabinoxylans) and other useful carbohydrate and non-carbohydrate components. To characterize all the components of barley hulls and straw, they were treated with hot water to obtain water extractable materials and with a-amylase to remove starch. The water soluble non-caloric hemicelluloses were isolated from hot water-extracted and de-starched barley hulls/straw by an alkaline extraction followed by ethanol precipitation. The oligosaccharides and acid insoluble lignin present in the supernatant after arabinoxylan precipitation were also obtained and partially characterized. The structural and the emulsifying properties of these hemicelluloses (hydrocolloids) were studied. The hemicelluloses from barley hulls and all straw varieties showed very good emulsifying properties in oil-in-water emulsions system.