Authors:E. Testani, V. Giannetti, M. Boccacci Mariani, and P. Mannino
, R. , Platani , C. , Spano , G. , Monteleone , M. & Cattivelli , L. ( 2009 ). Metabolic profiling and analysis of volatile composition of durumwheat semolina and pasta . J. Cereal Sci. , 49 , 301 – 309
Dietary fiber content of bulgurs prepared from different wheat varieties was investigated. Grains of 29 Turkish wheat cultivars and advanced breeding lines (23 of durum and 6 of common wheat) were used in this study. The average values for ADF and NDF (+amylase) contents of investigated durum wheats were 3.4% and 9.9%, respectively and the corresponding values of common wheats were 3.4% and 11.5%. In this study, the average values for ADF and NDF (+amylase) contents of bulgurs made of durum wheats were found to be 5.4% and 10.3%, respectively and the corresponding values of bulgurs made of common wheats were 5.8% and 11.7%. The minimum and maximum values for ADF and NDF (+amylase) contents of bulgurs made of durum wheats were found to be 4.1%-6.8% and 7.9%-11.8%, respectively and the corresponding values of bulgurs made of common wheats were 5.1%-6.4 and 10.6%-12.4%. The processing of wheat into bulgur generally increased the levels of ADF and NDF(+amylase) contents. It can be concluded that bulgur is at least as good as a raw wheat in terms of dietary fibre content. Although there is no essential change in the total protein content, ash and ß-carotene contents of the bulgurs were lower than the ones in the original wheats as a result of debranning.
This study examines the occurrence of aflatoxins (AFS) and ochratoxin A (OTA) in bread and durum wheat samples. A total of 141 samples were collected from eleven different regions of Turkey. An analytical method based on liquid extraction, immunoaffinity column (IAC) clean-up followed by high performance liquid chromatography (HPLC) was used for the determination of AFs and OTA levels. As a result, AFs and OTA were detected in 2% and 9.2% of wheat samples at concentrations varying from 0.21 to 0.44 µg kg−1 and from 0.1 to 3.2 µg kg−1, respectively. Aflatoxin B1 (AFB1) and aflatoxin B2 (AFB2) were found positive in samples ranging between 0.21–0.35 µg kg−1 and 0.094 µg kg−1, respectively. However, none of the samples contained aflatoxin G1 (AFG1) and aflatoxin G2 (AFG2). The study also recommended that contamination levels in wheat and wheat-based products should be routinely monitored in greater sample numbers to insure food safety.
Authors:S. Gavurníková, M. Havrlentová, and J. Kraic
-Pertena . (Wheat, rye and their flours, durumwheat and durumwheat semolina. Determination of the falling number according to Hagberg-Perten.) No. 3093. SÚTN, Bratislava, 20 pages.
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