TECHNOLOGICAL CRITERIA FOR THE EVALUATION OF THE SUITABILITY OF WHEATSORTS FOR INDUSTRIAL USE ESPECIALLY FOR BIOETHANOL PRODUCTION

The activity of the autoamylolytic enzyme system differs in several wh eat sorts. So there ist a difference in sorts of wheat in their suitab ility for bioethanol production, too. Analytical methods for the exami nation of the suitability of wheat sorts for bioethanol production are presented; especially such methods that simulate the conditions durin g technical mashing processes. Therefore distinctive fermentation expe riments for the calculation of the Autoamylolytic Quotient (AAQ) were developed. The AAQ is defined as percentage yield of alcohol from a ch arge of wheat in autoamylolytical fermentations (AAG) regarded to the yield of alcohol in standard fermentations (SG) under complete additio n of amylolytic enzymes. This analytic method gives the criterions for the suitability of wheat charges in bioethanol production. For exampl e the wheat sort ,,Adular'' always shows highest autoamylolytic activi ty (AA) without regard to local and climatic conditions. The shown res ults regarding to technical processes must be rechecked and confirmed. Therefor we suggest a regular examination during evaluation of crop s eeds.