Nutritional Assessment of 67 Potato Cultivars Grown in China Using the Nutrient-Rich Foods Index Model

Abstract

The nutritional properties of tubers from 67 potato (Solanum tuberosum L.) cultivars were systematically evaluated in this study. The Nutrient-Rich Foods (NRF) Index Model was adopted for nutrient profiling and assessing the overall nutrient density of potatoes. The macronutrients including: dry matter, crude protein, total dietary fiber (TDF), crude fat, starch, and ash contents were found to be in the range of 14.8–30.5 g/100 g fresh weight (FW), 5.71–12.0, 1.99–3.39, 0.18–1.08, 56.0–75.5, and 3.02–6.06 g/100 g dry weight (DW), respectively. Furthermore, vitamin C, macro-mineral K and micro-mineral Fe contents ranged between 22.6–86.6, 1518–3145, and 1.42–6.07 mg/100 g dry weight (DW), respectively. According to the NRF Index model (NRF11.3), NRF11.3 score ranged between 70.6–110 for male and 110–115 per 100 kcal for female aged ≥18 years old. As a consequence, the described NRF11.3 index model could be used to determine the major components and micronutrients of different potato cultivars and aid in comprehensive nutritional study on potato as a desirable staple to human nutrition and daily diet.