Iron and zinc variation along the grain length of different Thai rice varieties

This study examined the distribution of iron (Fe) and zinc (Zn) along the grain length of seven rice varieties. The experiment was conducted in a completely randomized design with two factors (variety and grain fraction) and three independent replications. Samples of brown and white rice of six comm...

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Main Authors: Suwannee Laenoi, Chanakan Prom-U-Thai, Bernard Dell, Benjavan Rerkasem
Format: Journal
Published: 2018
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Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84956939406&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/54904
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-549042018-09-04T10:27:58Z Iron and zinc variation along the grain length of different Thai rice varieties Suwannee Laenoi Chanakan Prom-U-Thai Bernard Dell Benjavan Rerkasem Multidisciplinary This study examined the distribution of iron (Fe) and zinc (Zn) along the grain length of seven rice varieties. The experiment was conducted in a completely randomized design with two factors (variety and grain fraction) and three independent replications. Samples of brown and white rice of six common Thai rice varieties and a high Fe and Zn variety, IR68144, were transversely cut into three fractions per grain (basal, middle, and distal) with approximately the same length in each fraction. The concentration of Fe and Zn was determined by the dry ashing method and quantified using atomic absorption spectrometry. The middle grain fraction of brown rice was found to have the lowest Fe and Zn with greater concentration of Fe and Zn in the basal (embryo end) than the other fractions. The rice varieties differed in the amount of Fe and Zn allocated to different fractions of the endosperm (white rice). The potential for loss of Fe and Zn during milling due to their uneven distribution along the grain length will become more significant when higher nutrient concentrations are involved, such as those achieved by biofortification efforts. Micronutrient distribution needs to be taken into consideration to ensure that rice consumers benefit from Fe and Zn biofortification. 2018-09-04T10:27:58Z 2018-09-04T10:27:58Z 2015-12-01 Journal 15131874 2-s2.0-84956939406 10.2306/scienceasia1513-1874.2015.41.386 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84956939406&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/54904
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Multidisciplinary
spellingShingle Multidisciplinary
Suwannee Laenoi
Chanakan Prom-U-Thai
Bernard Dell
Benjavan Rerkasem
Iron and zinc variation along the grain length of different Thai rice varieties
description This study examined the distribution of iron (Fe) and zinc (Zn) along the grain length of seven rice varieties. The experiment was conducted in a completely randomized design with two factors (variety and grain fraction) and three independent replications. Samples of brown and white rice of six common Thai rice varieties and a high Fe and Zn variety, IR68144, were transversely cut into three fractions per grain (basal, middle, and distal) with approximately the same length in each fraction. The concentration of Fe and Zn was determined by the dry ashing method and quantified using atomic absorption spectrometry. The middle grain fraction of brown rice was found to have the lowest Fe and Zn with greater concentration of Fe and Zn in the basal (embryo end) than the other fractions. The rice varieties differed in the amount of Fe and Zn allocated to different fractions of the endosperm (white rice). The potential for loss of Fe and Zn during milling due to their uneven distribution along the grain length will become more significant when higher nutrient concentrations are involved, such as those achieved by biofortification efforts. Micronutrient distribution needs to be taken into consideration to ensure that rice consumers benefit from Fe and Zn biofortification.
format Journal
author Suwannee Laenoi
Chanakan Prom-U-Thai
Bernard Dell
Benjavan Rerkasem
author_facet Suwannee Laenoi
Chanakan Prom-U-Thai
Bernard Dell
Benjavan Rerkasem
author_sort Suwannee Laenoi
title Iron and zinc variation along the grain length of different Thai rice varieties
title_short Iron and zinc variation along the grain length of different Thai rice varieties
title_full Iron and zinc variation along the grain length of different Thai rice varieties
title_fullStr Iron and zinc variation along the grain length of different Thai rice varieties
title_full_unstemmed Iron and zinc variation along the grain length of different Thai rice varieties
title_sort iron and zinc variation along the grain length of different thai rice varieties
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84956939406&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/54904
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