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

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 significantly decreased ash, protein, oil and crude fiber contents but increased moisture and nitrogen free extract contents of the grains for both cultivars. Storage resulted in a slight and gradual decrease in the chemical composition of the treated and untreated grains of the cultivars. Modern decortication of the grains significantly (P=0.05) reduced tannin content in both cultivars compared to untreated and traditionally decorticated grains. 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 continued in both treated and untreated cultivars. Decortication significantly (P=0.05) reduced the Ca, P and Fe contents in both cultivars grains. Lower P and Fe contents were found in modern decorticated grains compared to traditional decorticated ones. Storage of the cultivars resulted in gradual decrease in 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.

Effect of polishing on milling, nutritional properties, and optimization of polishing process parameters for kodo and browntop millets: A response surface methodology approach

“…The results obtained are in contradiction with a previous study where polishing had no effect on moisture content (Babiker et al, 2018). Moreover, the current study altered the moisture content of grain by surface conditioning.…”

“…In addition to the reduction in anti‐nutrients, the limitations of polishing were also reported by several researchers. Babiker et al (2018) observed de‐branning of pearl millet resulted in a reduction of protein, fat, and dietary fiber by significant levels. Up to 67% of reduction in vitamin E content of little millet was noted after polishing (Kundgol et al, 2013).…”

Antinutrients in Grain-Based Plant Drinks: Scoping Review

“…Содержание фитиновой кислоты в рисовых отрубях достигает 8,7 % (Graça et al, 2019;Hendek Ertop & Bektaş, 2018). При этом, применение этапа шелушения зерна уже снижает количество фитатов (Babiker et al, 2018;Samtiya et al, 2020). Также измельчение является наиболее часто используемым методом удаления слоя отрубей с зерен и считается, что это приводит к частичному снижению количества фитиновой кислоты (Hendek Ertop & Bektaş, 2018).…”

“…Многие авторы определенно разную роль фитиновой кислоты в воздействии на организм человека (Abdulwaliyu et al, 2019;Babiker et al, 2018;Dahdouh et al, 2019). Исследователь (Grases et al, 2017) постулирует, что при хорошо сбалансированном питании ингибирующее действие фитата на усвоение минералов очень низкое.…”

Understanding the Antinutritional Factors and Bioactive Compounds of Kodo Millet (Paspalum scrobiculatum) and Little Millet (Panicum sumatrense)

“…Likewise, handpounding or other mechanical devices were used, which causes abrasive decortication of the millets [117]. It has been observed that decortication shows no effect on the levels of fat and protein in millets, whereas it dramatically reduced the crude fiber content, minerals, phytochemicals, antioxidant activity, and antinutrients [118]. Chandrasekara et al [119] showcased that the total phenolic components reduced drastically in kodo and kutki millets after dehulling when compared to whole grain millets due to inconsistent distribution of polyphenolics in distinct layers of the millet grains.…”