Gluten-Free Sources of Fermentable Extract: Effect of Temperature and Germination Time on Quality Attributes of Teff Eragrostis tef (zucc.) Trotter Malt and Wort

摘要

This study was conducted to evaluate the behavior of a white tell variety called Witkop during malting by using different parameters (germination temperature and duration) and to identify the best malting program. Samples were evaluated for standard quality malt and wort attributes, pasting characteristics, beta-glucan and arabinoxylan content, and sugar profile. It was concluded that malting teff at 24 degrees C for 6 days produced acceptable malt in terms of quality attributes and sugar profile for brewing. The main attributes were 80.4% extract; 80.9% fermentability, 1.53 mPa s viscosity, 7.4 EBC-U color, 129:mg/L FAN, and 72.1 g/L of total fermentable sugars. Statistical analysis showed that pasting characteristics of teff malt were negatively correlated with some malt quality attributes, such as extract and fermentability. Witkop teff appeared to be a promising raw material for mailing and brewing. However, the small grain size may lead to difficulties in handling malting process, and a bespoke brewhouse plant should be developed for the production at industrial scale.