Distribution of Minerals in Wheat Grains (Triticum aestivum L.) and in Roller Milling Fractions Affected by Pearling

被引：56

作者：

De Brier, Niels ^{[1
]}

Gomand, Sara V. ^{[1
]}

Donner, Erica ^{[3
]}

Paterson, David ^{[4
]}

Delcour, Jan A. ^{[1
]}

Lombi, Enzo ^{[3
]}

Smolders, Erik ^{[2
]}

机构：

[1] Katholieke Univ Leuven, Lab Food Chem & Biochem, Leuven Food Sci & Nutr Res Ctr LFoRCe, B-3001 Leuven, Belgium

[2] Katholieke Univ Leuven, Div Soil & Water Management, B-3001 Leuven, Belgium

[3] Univ S Australia, Ctr Environm Risk Assessment & Remediat, Mawson Lakes, SA 5095, Australia

[4] Australian Synchrotron, Clayton, Vic 3168, Australia

来源：

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | 2015年 / 63卷 / 04期

关键词：

pearling; milling; ICP-MS; mu-XRF microscopy; PHYTIC ACID; PHYTASE ACTIVITY; ZINC; IRON; SPECIATION; FLOUR; ACCUMULATION; TRANSPORT; MANGANESE; SELENIUM;

D O I：

10.1021/jf5055485

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

The distribution of minerals in (pearled) wheat grains was measured by synchrotron X-ray fluorescence, and the impact of pearling (0, 3, 6, 9, and 12% by weight) on the mineral composition of flour, shorts, and bran was identified by ICP-MS. The xylem mobile elements (Mn, Si, Ca, and Sr) dominated in the outermost bran layers, while the phloem mobile elements (K, Mg, P, Fe, Zn, and Cu) were more concentrated in the aleurone. Pearling lowered the concentrations of xylem mobile elements and increased the concentrations of most phloem mobile elements in the pearled grains. Molybdenum, Cd, and especially Se were more evenly distributed, and pearling affected their concentrations in milling products less. Pearling (3%) increased the concentration of several nutrients (P, Zn, Cu) in the flour because the bran fractions reaching the flour are enriched in aleurone. The correlations of concentrations of Mg, Fe, Zn, and Cu with that of P suggested their association with phytate.

引用

页码：1276 / 1285

页数：10

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