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A Promising Low Beta-Glucan Barley Mutation of m351 for Better Bioethanol Production Use

Hu, Gongshe, Trupia, Sabrina, Ellberg, Sherry R.
BioEnergy research 2015 v.8 no.3 pp. 1158-1164
barley, beta-glucanase, beta-glucans, bioethanol, cultivars, ethanol, ethanol production, fermentation, mutation, raw materials, sampling
Bioethanol is an important liquid fuel complement. Barley is a potential alternative raw material for ethanol production because its by-product is a nutritious feed. The barley m351mutant, which has a mutation for low beta-glucan content, was tested for its ethanol production efficiency and feed fraction quality in a pilot fermentation experiment. Grain samples of m351 and the corresponding wild type of Harrington were either treated or untreated with beta-glucanase during the ethanol production process. Compared to the corresponding wild-type line, m351 produced the same amount of ethanol. More importantly, the feed fraction derived from the fermentation process showed 5 % more protein and 7 % less beta-glucan than that from the wild type, indicating that the feed fraction from m351 was more valuable. The experiments provided evidence that m351 is a useful genetic resource for developing barley cultivars for use in bioethanol production.