Determination of the malting and milling performance of sorghum cultivars

[摘要] English: Consumer demands for sorghum food acceptability stress the need for qualityevaluation of milled and malted products. The aim of this study was to determine themilling and malting quality of sorghum cultivars with different physical and chemicalqualities.The malting, physical and milling qualities of 24 sorghum cultivars were investigatedover 2 seasons at 3 localities per season. The most important malting qualityparameters that were identified with the canonical variate analysis were free aminonitrogen, diastatic power, germinative energy and vigour, compared to polyphenols,malting loss and water absorption that was identified as less important. From thecanonical variate analysis, the most important physical qualities measured were sieve .fraction large, hundred kernel weight, water absorption and moisture content and wereused to predict milling quality, while sieve fraction medium and small and mealfractions were found to be less important. Food quality properties were determinedfrom roller and abrasive decortication milled meal. The abrasive hardness index,dehulling index and viscosity were important abrasive decortication millingparameters, with break 2 bran, break 1 bran, L-values, extraction, break 2 meal, break1 meal and break 2 grits being important roller milling parameters.The best malting cultivars were APN 881, NK 286, PAN 8446, PAN 8660, SNK3443, SNK 3337, SNK 3663, SNK 3939, SNK 3975, PAN 8564, NS 5655, SNK 3860and NS 5511.Cultivars with the best physical properties were SNK 3939, SNK 3663, PAN 8061,PAN 8564, PAN 8171, SNK 3443, PAN 8446, SNK 3337, NK 286, APN 881, SNK3883, SNK 3975, SNK 3567, PAN 8272 and PAN 8370.Good abrasive decortication milling property cultivars were APN 881, SNK 3567,SNK 3863, NK 286, ADV 5010, PAN 8564, SNK 3443, PAN 8370 and PAN 8660.Good roller milling cultivars were SNK 3883, SNK 3939, PAN 8564, NK 286 andSNK 3975. Cultivars with multi-functions were NK 286, PAN 8564 APN 881, SNK 3443, PAN8660, SNK 3939, NS 5655 and SNK 3975 (good malting and milling).

[发布机构] University of the Free State