A Comparative Study on the Effectiveness of Coating and Dusting Technologies on Fortification of Acha (Digitaria exilis) Grains

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Chinedu Ann Chika
E. Atawodi Sunday
Umeh Chisom Charles
Kahu Jerry Chechet


Background: Reports have shown that consumption of acha (Digitaria exilis) is beneficial to both diabetic and hypertensive patients considering its low glycaemic index, if fortified could assist to improve health and in combating hidden hunger.

Aims: This work was aimed at establishing the technology of fortifying acha (Digitaria exilis) grains with vitamin A, Iron, copper and zinc by comparing the effectiveness of coating and dusting technologies and analysing the vitamin A, iron, zinc and copper levels of acha grains fortified by both methods.

Methodology: Vitamin A was quantified by High Performance Liquid Chromatography (HPLC) method, while iron, zinc and copper were quantified using Atomic Absorption Spectroscopy (AAS) method. 

Results: Vitamin A was undetected in unfortified grain, but present at 29,904.18 IU/kg and 29,657.66 IU/kg in coated and dusted grains respectively. The iron content(58 mg/kg) in unfortified grain increased by 22% and 15% for coated and dusted respectively, Copper increased by 25% and 14%  and Zinc by 32% and 45% with coating and dusting respectively.

Conclusion: This study suggests that coating is a more promising technology for fortifying acha grains with Vitamin A, iron and copper, which will assist in delivering these critical micronutrients in the vulnerable population and also be used as a strategy for dietary improvement.

Acha, grains, coating, dusting, fortification, micronutrients

Article Details

How to Cite
Chika, C., Sunday, E. A., Charles, U., & Chechet, K. (2019). A Comparative Study on the Effectiveness of Coating and Dusting Technologies on Fortification of Acha (Digitaria exilis) Grains. European Journal of Nutrition & Food Safety, 9(3), 210-219. https://doi.org/10.9734/ejnfs/2019/v9i330059
Original Research Article


Underwood BA. From research to global reality: the micronutrient story. The Journal of nutrition. 1998;128(2):145- 151.

World Health Organization. Global prevalence of vitamin A deficiency in populations. WHO global database on vitamin A deficiency. Geneva; 1995.

World Health Organization. Guidelines on food fortification with micronutrients. Edited by Lindsay Allen et al. Geneva, Switzerland; 2006.

Guangwen T, Jian Q, Gregory D, Micheal G. Golden rice is an effective source of vitamin A. American Journal of Clinical Nutrition. 2009;89(17):76-83.

Kristina LP, Sherry AT. The acute and chronic toxic effect of vitamin A. American Journal of Clinical Nutrition. 2006;83:191-201.

Richardson DP. Food fortification. In de Jong N, Adam SGM, de Groot LCPGM, de Graaf C. Variability of micronutrient content in enriched dairy and fruit products. International Journal of Food Science and Nutrition. 1993;51:247-257.

Tyndall JA, Okoye V, Elumelu F, Dahiru A, Pariya HB. Vitamin A and iron deficiency in pregnant women, lactating mothers and their infants in Adamawa State, Nigeria: A prospective cohort study. American Journal of Food and Nutrition. 2012;2:14-20.

Mehansho H. Iron fortification technology development: New approaches. The Journal of Nutrition. 2006;136(4):1059-1063.

Ekwochi U, Osuorah DIC, Odetunde OI, Egbonu I, Ezechukwu CC. Prevalence of iron deficiency anaemia in anaemic under-5 children in Enugu South East Nigeria. Nigerian Journal of Paediatrics. 2013; 41(2):129-132.

Saeed AM. Decreased erythropoietin response in Plasmodium falciparum malaria‐associated anaemia. European Journal of Haematology. 1996;59(5):299-304.

World Health Organization. Worldwide prevalence of anaemia 1993-2002: WHO global database on anaemia; 2005.

Johnson Q, Mannar V, Ranum P. Fortification handbook: Vitamin and mineral fortification of wheat flour and maize meal. Ottawa: Micronutrient Initiative; 2004.

Bishai D, Nalubola R. The history of food fortification in the United States: its relevance for current fortification efforts in developing countries. Econ. Dev. Cultural change; 2002.

Omar D, Mora JO. Proceedings of the XX international vitamin consultative group meeting. Food Fortification to Reduce Vitamin A Deficiency: International Vitamin A Consultative Group Recommendations. MOST, U.S. Agency for International Development Micronutrient Program, Arlington, VA 22209. American Society for Nutritional Sciences; 2002.

Hoffpauer D. Rice enrichment for today. Cereal Foods World. 1992;37:757-759.

Jideani IA. Digitaria exilis (acha/fonia), Digitariaiburua (iburu/fonio) and Eluesine coracana (tamba/finger millet) – Non conventional cerals grains with potentials. Science Research Essay. 2012;7(45): 3834-3843.

Ballogou VY, Soumanou MM, Toukourou F, Hounhouigan JD. Structure and nutritional composition of fonio (Digitaria exilis) grains: A review. International Research Journal Biological Science. 2013;2(1):73-79.

Glew RH, Laabes EP, Presley JM, Schulze J, Andrews R, Wang YC, Chuang LT. Fatty acid, amino acid, mineral and antioxidant contents of acha (Digitaria exilis) grown on the Jos Plateau, Nigeria. International Journal of Nutrition and Metabolism. 2013; 5(1):1.

USAID. Rice fortification in developing countries: A critical review of the technical and economic feasibility; 2008.

AOAC; Official Methods of Analysis. Retinyl palmitate in fortified foods 18th edition. Association of Official Agricultural Chemists. Washington, DC. 2010;45(1):1.

AOAC; Official Methods of Analysis. Mineral determination. 10th edition. Association of official agricultural chemists. Washington, DC. 2000;28(5).

Bayarri S, Calvo C, Costell E, Duran L. Influence of color on perception of sweetness and fruit flavour of fruit drinks. Food. Sci. Tech. Int. 2001;7(5):399-404.

ISO. Sensory analysis. General guidelines for the design of test rooms. Standard no. 8589. Geneva, Switzerland; 1988b.

World Food Programme: A case for fortified rice; 2017.

Johanna TD, Kathryn LW, Omar D, Carl LK, Janet CK, Kevin BM, Martin AP, Valerie T, Christine LT, Courtney PG, Ashley BJ, Regan LB. Fortification and health: Challenges and opportunities. American Society for Nutrition. Advance Nutrition. 2015;6:124–131.

National Agency for Food and Drug Administration and Control ACT 1993 (as amended). Guidelines for Global Listing of items for Fast Food chains/Restaurants NAFDAC/RR/018/00; 2005.

Steiger G, Müller‐Fischer N, Cori H, Conde‐Petit B. Fortification of rice: Technologies and nutrients. Annals of the New York Academy of Sciences. 2014; 1324(1):29-39.

Fairweather-Tait SJ, Southon S, Piper Z. The effect of alcoholic beverages on iron and zinc metaboliosm in the rat. British Journal of Nutrition. 1988;60(2):209-15.

Alavi S, Bugusu B, Cramer G, Dary O, Lee TC, Martin L, Wailes E. Rice fortification in developing countries: A critical review of the technical and economic feasibility. Institute of Food Technologists, Washington DC; 2008.

Owen DF, McLntire JM. Technologies of the fortification of milk products. In Technol. Fortification of foods Proc. Workshop. 1975;44-56.

Steele CJ. Cereal fortification. Techno-logical problems cereal foods world. 1976; 21(10):538-540.

Oghbaei M, Prakash J. Bioaccessible nutrients and bioactive components from fortified products prepared using finger millet (Eleusine coracana). Journal of the Science of Food and Agriculture. 2012;92: 2281-2290.

Cubadda F, Aureli F, Raggi A, Carcea M. Effect of milling, pasta making and cooking on minerals in durum wheat. Journal of Cereal Science. 2009;49:92-97.

Prodanov M, Sierra I, Vidal-Valverde C. Influence of soaking and cooking on the thiamine, riboflavin and niacin contents of legumes. Food Chemistry. 2004;84:271-277.