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  • Title: Production of a saccharifying rice malt for brewing using different rice varieties and malting parameters.
    Author: Mayer H, Marconi O, Regnicoli GF, Perretti G, Fantozzi P.
    Journal: J Agric Food Chem; 2014 Jun 11; 62(23):5369-77. PubMed ID: 24837876.
    Abstract:
    This study was conducted to produce rice malt suitable for beer brewing. An all-rice beer would be particularly appealing to individuals with celiac disease because rice does not contain gluten proteins. Furthermore, rice malt could also contribute to new beer flavors and brands. A screening of 10 rice varieties was conducted. The varieties Balilla and Centauro were found to be suitable for the production of an all-rice malt beer without the need of exogenous enzymes. They were characterized by a low diastatic power but nevertheless they saccharified well, likely due to other endogenous amylolytic enzymes such as limit dextrinase and α-glucosidase. The addition of CaCl2 and lactic acid during mashing lowered the pH value and increased saccharification. However, the Balilla variety saccharified without the need of these additives. We also show that the soluble nitrogen and free amino nitrogen content of rice malt wort can be increased by the incorporation of the acrospires and rootlets during mashing.
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