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Crude cellulase preparations from Trichoderma reesei, freed of amyloglucosidase by heating, will completely hydrolyse barley β-glucan to glucose. Apparent non-quantitative recovery of glucose is due to its adsorption by the high levels of protein present. Methods are given for the measurement of total and water-soluble β-glucan. Dehusking does not lower the amount of β-glucan which is measured.
Martin et al. (Wed,) studied this question.