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  • Title: Effect of modification of the kilning regimen on levels of free ferulic acid and antioxidant activity in malt.
    Author: Inns EL, Buggey LA, Booer C, Nursten HE, Ames JM.
    Journal: J Agric Food Chem; 2011 Sep 14; 59(17):9335-43. PubMed ID: 21819143.
    Abstract:
    Barley phenolic antioxidants change in response to the kilning regimen used to prepare malt. Green malt was kilned using four different regimens. There were no major differences among the finished malts in parameters routinely used by the malting industry, including, moisture, color, and diastatic activity. Ferulic acid esterase activity and free ferulic acid were higher in malts subjected to the coolest kilning regimen, but malt ethyl acetate extracts (containing ferulic acid) contributed only ∼5% of the total malt antioxidant activity. Finished malt from the hottest kilning regimen possessed the highest antioxidant activity, attributed to higher levels of Maillard reaction products. Modifying kilning conditions leads to changes in release of bound ferulic acid and antioxidant activity with potential beneficial effects on flavor stability in malt and beer.
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