Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Formation of high levels of acrylamide during the processing of flour derived from sulfate-deprived wheat
AU - Muttucumaru, Nira
AU - Halford, Nigel G.
AU - Elmore, J. Stephen
AU - Dodson, Andrew T.
AU - Parry, Martin
AU - Shewry, Peter R.
AU - Mottram, Donald S.
PY - 2006/11/15
Y1 - 2006/11/15
N2 - When wheat was grown under conditions of severe sulfate depletion, dramatic increases in the concentration of free asparagine were found in the grain of up to 30 times as compared to samples receiving the normal levels of sulfate fertilizer. The effect was observed both in plants grown in pots, where the levels of nutrients were carefully controlled, and in plants grown in field trials on soil with poor levels of natural nutrients where sulfate fertilizer was applied at levels from 0 to 40 kg sulfur/Ha. Many of the other free amino acids were present at higher levels in the sulfate-deprived wheat, but the levels of free glutamine showed increases similar to those observed for asparagine. In baked cereal products, asparagine is the precursor of the suspect carcinogen acrylamide, and when flours from the sulfate-deprived wheat were heated at 160°C for 20 min, levels of acrylamide between 2600 and 5200 μg/kg were found as compared to 600-900 μg/kg in wheat grown with normal levels of sulfate fertilization.
AB - When wheat was grown under conditions of severe sulfate depletion, dramatic increases in the concentration of free asparagine were found in the grain of up to 30 times as compared to samples receiving the normal levels of sulfate fertilizer. The effect was observed both in plants grown in pots, where the levels of nutrients were carefully controlled, and in plants grown in field trials on soil with poor levels of natural nutrients where sulfate fertilizer was applied at levels from 0 to 40 kg sulfur/Ha. Many of the other free amino acids were present at higher levels in the sulfate-deprived wheat, but the levels of free glutamine showed increases similar to those observed for asparagine. In baked cereal products, asparagine is the precursor of the suspect carcinogen acrylamide, and when flours from the sulfate-deprived wheat were heated at 160°C for 20 min, levels of acrylamide between 2600 and 5200 μg/kg were found as compared to 600-900 μg/kg in wheat grown with normal levels of sulfate fertilization.
KW - Acrylamide
KW - Agronomy
KW - Asparagine
KW - Sulfate fertilizer
KW - Wheat
U2 - 10.1021/jf0623081
DO - 10.1021/jf0623081
M3 - Journal article
C2 - 17090146
AN - SCOPUS:33751289208
VL - 54
SP - 8951
EP - 8955
JO - Journal of Agricultural and Food Chemistry
JF - Journal of Agricultural and Food Chemistry
SN - 0021-8561
IS - 23
ER -