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EFFECT OF INFECTION BY SUNN ON SEMOLINA QUALITY PARAMETERS OF DURUM WHEAT | ||
| Journal of Tikrit University For Agriculture Sciences | ||
| Article 1, Volume 11, Issue 4, 2011, Pages 422-429 | ||
| Author | ||
| Makarim A. Mousa | ||
| Abstract | ||
| The losses due to sunn– bug (Eurygaster SPP) damage are important in cereal production and industry among Middle East countries including Iraq. Samples of 3 durum wheat (T.durum) cultivars (Wahat Al – Iraq , Doar 2 9 , AL – ibrahimia) with 0 , 10 and 20% of suni – bug damage were used to determine the effect of suni – bug damage on milling properties and semolina quality .One thousand kernel weight,semolina yield (g), ash and gluten content in semolina were esitmated,also virtreousness value and amylase enzymes active by falling number test,sedmentation value by SDS sedimentation test were done.The result showed that as the damage increased, semolina yield of all cultivars decreased significantly ( 66 ,62.6 , 59.9)% , (63.5 ,59.55 ,55.98)% (70.0, 67.7 ,62.5)%for damage level 0,10,20 % to Wahat Al- Iraq ,Doar-29, AL-ibrahimia respectively. .Test weight decreas as the damage level increased(80,76,75),75,72,72),(70,70,67)g for damage level 0,10,20% for Wahat Al-Iiraq,Doar29,al-abrahimia cultivars. There were significantly increased at semolina ash content at2o%damage level for all cultivars where as semolina gluten content was decreased,Sedementation value decreased in grain at 20% damage level of all cultivars comparision to other levels this refer that the gluten quality was deteriorated..Virtreousness rate decreased for all caltivars as damage level increased.There were significant increaseing at p<0.01 in amylases enzymes activity as damage level increased for three cultivars. It was concluded that suni – bug damage would decrease substantially semolina yield because of effect at test weight and one thousand kernel weight ,also semolina quality decreased because of effect of gluten content, amylases enzymes activity and sedementation value | ||
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