Andrew D. Beal, D. Mottram
Dec 1, 1994
Citations
1
Influential Citations
80
Citations
Quality indicators
Journal
Journal of Agricultural and Food Chemistry
Abstract
The volatiles from malt, sampled at stages during roasting, were examined by GC odor-port evaluation and by GC-MS. The technique of odor dilution was applied to volatile extracts from samples exhibiting strong malt-like characteristics. Seven odors from the GC column persisted through several dilutions. 3- and 2-methylbutanal were responsible for the odors with the highest dilution factors which had malty characteristics. The other five odors were malty or cereal-like; ethylmethylpyrazines and maltol may contribute to these odors, but other compounds responsible were present at very low concentrations and have not yet been identified. The levels of 2- and 3-methylbutanal increased dramatically in malt during roasting