Climate-Resilient Crops as Gluten-Free Substitutes: A Systematic Review of the Nutritional, Technofunctional, and Rheological Properties of Sorghum, Pearl Millet, and Amaranth

Background: Gluten-free flours are essential alternatives for individuals with gluten intolerance, providing various nutritional benefits. Despite the increasing prevalence of gluten intolerance, there is limited systematic research on the potential of drought-tolerant grains like sorghum, pearl millet, and amaranth as gluten-free flour substitutes.

Aims: This study aims to review the nutritional, functional, and baking properties of gluten-free flours derived from red and white sorghum, pearl millet, and amaranth, assessing their viability as alternatives to wheat for gluten-intolerant individuals.

Methods: A systematic review was conducted following PRISMA guidelines, analyzing 30 peer-reviewed articles published between 2015 and 2024, primarily from Asia and Africa.

Results: White sorghum flour had the highest zinc concentration (13.20 mg/g), while red sorghum had the highest iron levels (28.93 mg/g). Amaranth flour demonstrated the highest protein content (25.5%) and crude fiber (15.9%). In contrast, pearl millet had the lowest iron (0.11 mg/g) and crude fiber content (0.6%). Among functional properties, pearl millet showed the highest water absorption capacity (359.33% ± 1.45), whereas white sorghum had the lowest (1.07% ± 0.04). Amaranth exhibited the highest oil absorption capacity (1.88 g/g ± 0.01), while pearl millet had the highest swelling index (8.17 mL/mL ± 0.01). In terms of baking properties, specific volume was the most frequently analyzed parameter, with pearl millet presenting the highest specific volume (4.87 cm³/g). Amaranth flour was identified as the best gluten-free option, excelling in loaf volume, porosity, and firmness.

Conclusion: The study suggests that utilizing traditional grains can help meet the growing demand for gluten-free products, highlighting their significant potential in the gluten-free market. Future research should focus on optimizing flour blends to enhance nutritional value and baking performance by incorporating conventional ingredients and innovative techniques to replicate the gluten network.

Keywords

Gluten-Free Climate-Resilient Grains Baking Technology Nutritional Composition Sorghum Pearl Millet Amaranth
  • Tafadzwa Jean Musidzaramba
    Centre for Innovation and Industrialisation, Department of Food Processing Technology, Marondera University of Agricultural Sciences and Technology, P.O Box 35 Marondera
  • Lesley Macheka
    Centre for Innovation and Industrialisation, Marondera University of Agricultural Sciences and Technology, P.O Box 35 Marondera

How to Cite

Musidzaramba, T. J., & Macheka, L. . (2026). Climate-Resilient Crops as Gluten-Free Substitutes: A Systematic Review of the Nutritional, Technofunctional, and Rheological Properties of Sorghum, Pearl Millet, and Amaranth. The North African Journal of Food and Nutrition Research, 10(21), 127-141. https://doi.org/10.51745/najfnr.10.21.127-141

Abolaji, G. T., Olooto, F. M., Ogundele, D. T., & Williams, F. E. (2016). Nutritional characterization of grain amaranth grown in Nigeria for food security and healthy living. Agrosearch, 17(2), 1. https://doi.org/10.4314/agrosh.v17i2.1

Adebo, J. A., & Kesa, H. (2023). Evaluation of nutritional and functional properties of anatomical parts of two sorghum (Sorghum bicolor) varieties. Heliyon, 9(6), e17296. https://doi.org/10.1016/j.heliyon.2023.e17296

Adeyeye, S. A. O. (2016). Assessment of quality and sensory properties of sorghum wheat flour cookies. Cogent Food & Agriculture, 2(1). https://doi.org/10.1080/23311932.2016.1245059

Adzqia, F., Suwonsichon, S., & Thongngam, M. (2023). Effects of white sorghum flour levels on physicochemical and sensory characteristics of gluten-free bread. Foods, 12(22), 4113. https://doi.org/10.3390/foods12224113

Aguiar, E. V., Santos, F. G., Centeno, A. C. L. S., & Capriles, V. D. (2022). Defining amaranth, buckwheat and quinoa flour levels in gluten-free bread: A simultaneous improvement on physical properties, acceptability and nutrient composition through mixture design. Foods, 11(6), 848. https://doi.org/10.3390/foods11060848

Alizadeh, S., Ahmadi-Dastgerdi, A., Reisi, S., Ebrahimi Tirtashi, F., Zokaei, M., & Tahriri, S. (2024). Effect of semolina replacement with amaranth flour on quality characteristics of functional pasta. Journal of Food Quality, 2024, 1–10. https://doi.org/10.1155/2024/3091944

Alkalay, M. J. (2022). Nutrition in patients with lactose malabsorption, celiac disease, and related disorders. Nutrients, 14(1), 2. https://doi.org/10.3390/nu14010002

Anal, A. K., Singh, R., Rice, D., Pongtong, K., Hazarika, U., Trivedi, D., & Karki, S. (2024). Millets as supergrains: a holistic approach for sustainable and healthy food product development. Sustainable Food Technology, 2(4), 908–925. https://doi.org/10.1039/d4fb00047a

Apostol, L., Belc, N., Gaceu, L., Oprea, O. B., & Popa, M. E. (2020). Sorghum flour: A valuable ingredient for bakery industry? Applied Sciences (Basel, Switzerland), 10(23), 8597. https://doi.org/10.3390/app10238597

Babio, N., Lladó-Bellette, N., Besora-Moreno, M., Castillejo, G., Guillén, N., Martínez-Cerezo, F., Vilchez, E., Roger, E., Hernández-Alonso, P., & Salas-Salvadó, J. (2020). A comparison of the nutritional profile and price of gluten-free products and their gluten-containing counterparts available in the Spanish market. Nutrients, 12(8), 2363. https://doi.org/10.3390/nu12082363

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