Purpose Pasta is popularly consumed in developed and developing countries. Many low-income homes that could not afford protein-rich foods consumed pasta without further supplements as a meal. However, pasta is deficient in protein and some other health-promoting substances. Deoiled sesame and amaranth flours are rich in protein, minerals, amino acids, antioxidants and many non-nutrient-based health benefits. Formulating a nutrient-dense pasta product (spaghetti) would reduce protein-energy malnutrition (PEM) and improve the health status of pasta consumers. This study aims to investigate some bioactive, nutrients and non-nutrient components of developed and optimized spaghetti pasta from deoiled sesame, amaranth and modified sorghum starch blend. Design/methodology/approach Amaranth, sorghum and sesame grains were sorted, wet-cleaned and dried. Sesame grain was roasted while starch was extracted from sorghum grain. The innate starch was modified by heat-moisture treatment. The prepared grains and starch were milled into flours and formulated into different flour mixtures using the Box-Behnken design of response surface methodology and the process was modeled and optimized. The flour mixtures were made into spaghetti pasta. Proximate, mineral, amino acids, biological value, protein efficiency ration, phytochemical, antioxidant activity, physico-functional and sensory properties of the formulated spaghetti were evaluated using standard procedures. Findings An optimal mixture of deoiled sesame (31.12g/100g), amaranth (56.56g/100g) and modified sorghum starch (12.32g/100g) were established, which yielded protein (25.79g/100g), appearance (96.65%), taste (94.57%) and acceptability index (97.37%). The spaghetti was significantly (p-values ranged from 0.001 to 0.018) superior in protein, ash, fat, fiber, calcium, magnesium, zinc, alkaloids, total phenolic, flavonoids, 2,2-diphenyl-1-picryl-hydrazl (DPPH) and ferric ion reducing antioxidant power (FRAP) relative to the control (100% wheat flour). Amino acid showed that the product is rich in histidine, isoleucine, phenylalanine and threonine. The high essential amino acid index of the product indicated that it is a good protein source. The spaghetti was significantly (p-values ranged from 0.001 to 0.021) superior in aroma, taste and acceptability index relative to the control. Originality/value This study showed the feasibility of developing spaghetti pasta from deoiled sesame, amaranth grains and modified sorghum starch. The production process described in this study is scalable; and the process could be applied on a small scale for the development of self-entrepreneurs and industrially. The high protein content of the product indicated that it could be used to reduce PEM in developing countries.
Flake is consumed in many parts of the world. Flakes are majorly prepared from cereals. However, most flakes are deficient in protein and some other healthful substances. High-protein soymeal is rich in protein, mineral, amino acids, antioxidants, and other healthful substances. Formulating flakes with high-protein soymeal would improve the health status of consumers. This work investigated consumer-ready flake from amaranth, high-protein soymeal, and modified corn starch produced under the optimized condition and characterized with the aim to develop models that would give a healthful consumer-ready flake. Amaranthus viridis, corn, and soybean grains were sorted, wet-cleaned, and dried. Soybean grains were processed into high-protein soymeal, starch was extracted from corn grains while A. viridis grains were processed into flour. Formulated flour mixtures were developed into flakes using three-level factorial categoric factor design of response surface methodology. The flakes were analyzed using standard procedures. Optimal flour mixtures of high-protein soymeal (34.78 g/100 g), amaranth (56.52 g/100 g), and modified corn starch (8.70 g/100 g) were established. Results showed the optimized flakes contained per 100 g: 29.05 g protein, 6.00 g fat, 4.10 g fibre, 3.84 g ash, 8.96 g moisture, 249.74 mg calcium, 272.35 mg magnesium, 12.08 mg iron, 618.42 mg phosphorus, 6.41 mg niacin, 4.85 mg pyridoxine, 0.21 g tannin, 1.85 mg phytate, 2.96 mg alkaloids, 908.24GAE total phenolics and 12.75mgRE flavonoids with good quality characteristics in amino acids. The study illustrated the feasibility of formulating quality consumer-ready flakes from amaranth, high-protein soymeal, and modified corn starch. The production process is scalable and could be employed for both domestic and industrial purposes. Graphical abstract
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