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A collective report on the extraction and isolation of β-glucan from grain sources, namely, oat, barley, and wheat is presented. An analysis on the effect of medium, pH, and temperature on the purity and yield of the β-glucan derived under acidic/alkaline/aqueous/enzymatic conditions is also made. Water extraction and alkali extraction processes are preferred as the yield and recovery of extracted β-glucan were good. Cost-effective development of the process for deriving high molecular weight β-glucan is the current requirement for its wide applications in food and pharmaceutical industries.
Maheshwari et al. (Tue,) studied this question.