Optimization of formulation and processing conditions for the production of functional noodles containing orange‐fleshed sweet potatoes and biofortified beans

Author:

Natocho Janet1,Mugabi Robert1ORCID,Muyonga John H.1ORCID

Affiliation:

1. Department of Food Technology and Nutrition, School of Food Technology, Nutrition and Bioengineering Makerere University Kampala Uganda

Abstract

AbstractThe global demand for noodles continues to increase due to their convenience, wide appeal, and affordability. Instant noodles, in particular, are popular for their easy preparation. With annual consumption reaching 106 billion servings in 2019, there is a growing awareness of the importance of healthy food options. However, most noodle types currently available commercially are of low nutritional value. This study sought to develop a protocol for the production of functional noodles consisting of orange‐fleshed sweet potatoes (OFSP) puree and biofortified bean powder (BBP). Response surface methodology (RSM) was used to optimize product formulation and processing parameters. Reduced quartic models were found to adequately represent the relationship between dependent variables (hardness, moisture, protein, dietary fiber, iron, and zinc content) and independent variables (dough thickness, drying temperature, and drying time). R2 values were 0.86–0.99, with a nonsignificant lack‐of‐fit (p < .05). Using numerical optimization, the optimal protocol for the production of functional noodles was determined to include formulation consisting of wheat 73%, OFSP 21.5%, and BBP 5.5%; dough thickness of 2.0 mm; drying temperature and time of 80.0°C and 143.4 min, respectively. These conditions yielded noodles with 5.9% moisture, 11.0 N hardness, 34.5% protein, 11.9% dietary fiber, 86.9 ppm (parts per million) iron, and 50.53 ppm zinc, with a desirability value of 0.82. Experimental validation demonstrated no significant difference from predicted values. Sensory evaluation rated the noodles as acceptable to consumers, with an overall acceptability of 7.8 on a 9‐point hedonic scale. These results show the potential of OFSP and BBP as ingredients for acceptable and nutrient‐rich noodles.

Publisher

Wiley

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