Distribution and speciation of iron and zinc in grain of two wheat genotypes

A - Papers appearing in refereed journals

Eagling, T., Neal, A. L., McGrath, S. P., Fairweather-Tait, S., Shewry, P. R. and Zhao, F-J. 2014. Distribution and speciation of iron and zinc in grain of two wheat genotypes. Journal of Agricultural and Food Chemistry - JAFC. 62, pp. 708-716.

AuthorsEagling, T., Neal, A. L., McGrath, S. P., Fairweather-Tait, S., Shewry, P. R. and Zhao, F-J.
Abstract

This study aimed to determine differences among wheat cultivars in the distribution and speciation of Fe and Zn
in grain milling fractions. Cultivars with higher Fe and Zn concentrations in the wholemeal flour were found to contain higher concentrations in the white flour. Soluble Fe and Zn were extracted and analyzed by size exclusion−inductively coupled plasma mass spectrometry. Fe speciation varied between milling fractions with a low molecular weight (LMW) complex likely to be Fe−deoxymugenic acid/nicotianamine being the predominant extractable Fe species in white flour, accounting for approximately 85% of the extractable Fe. Bran fractions had a lower amount of LMW-Fe form but more as soluble Fe−phytate and an unidentified high molecular weight peak. In the white flour fraction soluble Zn was found to be present mainly as a LMW peak likely to be Zn−nicotianamine complex. Soluble Fe−phytate was found in the white flour fraction of a high-Fe cultivar but not in a low-Fe cultivar.

Year of Publication2014
JournalJournal of Agricultural and Food Chemistry - JAFC
Journal citation62, pp. 708-716
Digital Object Identifier (DOI)doi:10.1021/jf403331p
Open accessPublished as non-open access
FunderBiotechnology and Biological Sciences Research Council
Funder project or codeDesigning Seeds for Nutrition and Health (DS)
Delivering Sustainable Systems (SS) [ISPG]
Designing cereal seeds for nutrition and health
Optimisation of nutrients in soil-plant systems: Determining how phosphorus availability is regulated in soils
BBSRC CASE Studentship: Optimising the amount and availability of iron in bread wheat cultivars to prevent global iron deficiency
Output statusPublished
Publication dates
Online01 Jan 2014
Publication process dates
Accepted01 Jan 2014
PublisherAmerican Chemical Society (ACS)
American Chemical Society (ACS)
Copyright licensePublisher copyright
ISSN0021-8561