Effect of decortication methods on the chemical composition, antinutrients, Ca, P and Fe contents of two pearl millet cultivars during storage

DOIhttps://doi.org/10.1108/WJSTSD-01-2018-0005
Published date09 July 2018
Pages278-286
Date09 July 2018
AuthorElfadil Babiker,Babiker Abdelseed,Hayat Hassan,Oladipupo Adiamo
Subject MatterPublic policy & environmental management,Environmental technology & innovation
Effect of decortication methods
on the chemical composition,
antinutrients, Ca, P and Fe
contents of two pearl millet
cultivars during storage
Elfadil Babiker
Department of Food Science and Nutrition, College of Food and Agricultural Sciences,
King Saud University, Riyadh, Saudi Arabia
Babiker Abdelseed and Hayat Hassan
Department of Grain Technology, Ministry of Agriculture, Food Research Center,
Khartoum North, Sudan, and
Oladipupo Adiamo
Department of Food Science and Nutrition,
College of Food and Agricultural Sciences, King Saud University,
Riyadh, Saudi Arabia
Abstract
Purpose The purpose of this paper is to evaluate the impact of modern and traditional decortication
methods on the chemical composition, antinutrients, Ca, P and Fe contents during storage of two pearl millet
cultivars (white and green) grown in Sudan.
Design/methodology/approach The grains of each cultivar were either decorticated traditionally using
traditional stone dehuller or by using modern dehuller. The chemical composition, antinutrients and Ca, P and
Fe contents of the cultivars were evaluated during storage for six months.
Findings The results showed that both methods of decortication (modern and traditional) employed
significantlydecreased ash,protein, oil and crude fibercontents but increasedmoisture and nitrogenfree extract
contents of the grains for both cultivars. Storage resulted in a slight and gradual decrease in the chemical
compositionof the treated and untreatedgrains of the cultivars.Modern decorticationof the grains significantly
(P¼0.05) reducedtannin content in both cultivarscompared to untreatedand traditionally decorticatedgrains.
Phytic acid content of the white cultivar was not affected by the method of decortication used but modern
decortication reduced that of green cultivar. Decrease in tannin and phytic acid was observed as the storage
continuedin both treated and untreatedcultivars. Decorticationsignificantly(P¼0.05) reduced the Ca, P and Fe
contentsin both cultivars grains. LowerP and Fe contents were found in moderndecorticated grains compared
to traditional decorticated ones. Storageof the cultivars resulted in gradual decreasein Ca, P and Fe contents.
Research limitations/implications Processing methods such as decortication affect the quality
attributes of pearl millet cultivars. The application of modern decortication method on pearl millet cultivars
has better quality attributes than those treated with traditional decortication.
Originality/value The study uses decortication methods (traditional and modern) to improve the quality
attributes of pearl millet cultivars. Antinutrients such as tannin and phytic acid were observed to reduce the
bioavailability of minerals like Fe. Decortication of the grains significantly reduced the level of such
antinutrients and improved bioavailability of minerals.
Keywords Antinutrients, Pearl millet, Chemical composition, Decortications, Mineral contents
Paper type Research paper
Introduction
For majority of people in developing countries, cereal grains serve as their staple food due to
high cost of animal foods and limited income (Fageer and El Tinay, 2004). Millet is regarded
as the sixth cereal crop in terms of world agricultural production and can thrive under
World Journal of Science,
Technology and Sustainable
Development
Vol. 15 No. 3, 2018
pp. 278-286
© Emerald PublishingLimited
2042-5945
DOI 10.1108/WJSTSD-01-2018-0005
The current issue and full text archive of this journal is available on Emerald Insight at:
www.emeraldinsight.com/2042-5945.htm
278
WJSTSD
15,3

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