Affordable Access

Publisher Website

Investigations on selenium in wheat

Authors
Journal
Phytochemistry
0031-9422
Publisher
Elsevier
Publication Date
Volume
9
Issue
6
Identifiers
DOI: 10.1016/s0031-9422(00)85306-6
Disciplines
  • Biology
  • Chemistry

Abstract

Abstract Pronase hydrolysates of crude gluten preparations from naturally seleniferous wheat seeds were subjected to ion-exchange chromatography and the eluates were examined chemically for selenium. Almost half of the selenium in the hydrolysate was accounted for as selenomethionine, but selenocystine was not detected. More detailed studies were then made on wheat gluten, seeds and straw from plants grown on soil to which 75Se-selenate had been added. On pronase hydrolysis of the seeds or the gluten, about half of the selenium could again be accounted for as selenomethionine. On examining protein-free, hot-water extracts of the seeds or straw of these plants, no free selenomethionine could be detected, suggesting the rapid incorporation of this amino acid into protein. Neither selenocystine, the seleno-half-cystine moiety nor Se-methylselenocysteine was detected in the hydrolysates or in the water extracts. The results suggest, however, the presence of selenocysteic acid in significant amounts in the gluten, the seeds and the straw. Over half of the selenium in the straw could be accounted for as selenate, but selenite was not found. Selenium compounds eluted shortly after selenite, selenate and cysteic acid, suggesting the presence of oxides of selenomethionine.

There are no comments yet on this publication. Be the first to share your thoughts.

Statistics

Seen <100 times
0 Comments

More articles like this

Platelet selenium as indicator of wheat selenium i...

on Journal of trace elements and... September 1993

Strategies for increasing the selenium content of...

on Journal of Cereal Science Jan 01, 2007

Selenium levels in wheat grains grown in Saudi Ara...

on Bulletin of Environmental Cont... October 1997

Dual effects of different selenium species on whea...

on Plant Physiology and Biochemis...
More articles like this..