Table 1 Nutrient constraints included in the linear programming optimization model
Dietary Reference Intake Constraints | Lower limits based on RNI, AI or AMDRa | Upper limits based on AMDR, PI-NCD or ULb |
|---|---|---|
Energy (kcal/d) | 2300 (EER) | Â |
Macronutrients (AMDR) | ||
 Energy supply from carbohydrate (%) | ≥50 | ≤65 |
 Energy supply from fat (%) | ≥20 | ≤30 |
Nutrients with RNI or AI | ||
 Protein (g/d) | ≥80 |  |
 Vitamin B1(mg/d) | ≥1.5 |  |
 Vitamin B2(mg/d) | ≥1.5 |  |
 Vitamin C(mg/d) | ≥150 | ≤2000 |
 Vitamin E(μg/d) | ≥17(AI) | ≤700 |
 Vitamin A(μgRAE/d) | ≥1300 | ≤3000 |
 Vitamin B6(mg/d) | ≥1.7 | ≤60 |
 Niacin (mg/d) | ≥15 | ≤35 |
 Calcium (mg/d) | ≥1000 | ≤2000 |
 Phosphorus (md/d) | ≥720 | ≤3500 |
 Potassium (mg/d) | ≥2400 (AI) |  |
 Magnesium (mg/d) | ≥330 |  |
 Iron (mg/d) | ≥24 | ≤42 |
 Zinc (mg/d) | ≥12 | ≤40 |
 Selenium (μg/d) | ≥78 | ≤400 |
 Copper (mg/d) | ≥1.4 | ≤8 |
 Manganese (mg/d) | ≥4.8 (AI) | ≤11 |
 Sodium (mg/d) | ≥1500 | ≤2000(PI-NCD) |
 Dietary fiber (g/d) | ≥25(AI) |  |