It was reported earlier that the frozen storage of bread containing barley β-glucan at -20 oC for 7 days had less effect on β- glucan viscosity and solubility than the storage at room temperature (23 oC) or refrigeration (4 oC) (Moriartey et al., 2011). A commercially manufactured oat crispbread (3.7% β-glucan) previously tested (Regand et al., 2009) had lower β-glucan Mw (1.97 kg/ mol). Although the crispbread was air dried after baking, the β-glucan solubility was much higher (61.3%). The viscosity of the extract measured on 20 g of sample using the shaking water bath method was 12.3 mPa s and in vivo testing did not show significant reduction in glycemic response compared to wheat crispbread.