Extrusion cooking significantly reduced both antioxidant activities and total phenolics in all extrudates.
This reduction was found to be 60–68% and 46–60% for
barley extrudate samples when compared with that of
the unprocessed barley flour. Antioxidant activity was
not correlated with TP. At high pomace level (10%), the barley–tomato pomace extrudates would provide
approximately 2.8 g of b-glucan while 3.2 g for barley–grape pomace extrudates per 100 g serving.