Structured Nutritional Data & Citations
Cornmeal: Nutritional & Physical Profile
Macronutrient & Caloric Content (per 100g / per 1/4 cup dry serving)
| Nutrient | Per 100g (dry) | Per 1/4 cup (approx. 30g dry) | Unit |
|---|---|---|---|
| Energy | 361 | 108 | kcal |
| Protein | 6.93 | 2.08 | g |
| Total Fat | 3.86 | 1.16 | g |
| Carbohydrates | 76.86 | 23.06 | g |
| - Dietary Fiber | 4.8 | 1.4 | g |
| - Sugars | 0.63 | 0.19 | g |
- Note: Values based on yellow, degermed, unenriched cornmeal. Enrichment significantly alters micronutrient profile.
- Reference: USDA FoodData Central, FDC ID: 170068 (SR Legacy: 20002).
Key Micronutrients (per 100g dry)
Vitamins:
- Niacin (B3): 1.4 mg (7% DV)
- Thiamine (B1): 0.14 mg (12% DV)
- Pyridoxine (B6): 0.22 mg (13% DV)
- Folate (B9): 28 µg (7% DV)
- Vitamin A (RAE): 27 µg (from carotenoids in yellow cornmeal)
Minerals:
- Iron: 1.05 mg (6% DV)
- Magnesium: 127 mg (30% DV)
- Phosphorus: 210 mg (17% DV)
- Zinc: 1.06 mg (10% DV)
- Potassium: 237 mg (5% DV)
Antioxidants:
Carotenoids (Lutein, Zeaxanthin): Present in yellow cornmeal, contributing to eye health and antioxidant activity.
Reference: USDA FoodData Central, FDC ID: 170068 (SR Legacy: 20002).
Functional Impact
Glycemic Index (GI): Moderate to High (typically 65-75 for finely ground, degermed cornmeal, depending on preparation). Whole-grain or coarsely ground varieties may have a slightly lower GI.
Glycemic Load (GL): For a 100g serving of dry cornmeal (approx. 70g net carbs) and a GI of 70, GL ≈ 49 (High). A standard 1/4 cup (30g) serving would yield a GL of approx. 14.7 (Medium).
Satiety Score: Moderately satiating due to complex carbohydrates and fiber content, promoting gradual energy release. However, its high glycemic potential can lead to quicker return of hunger in some individuals, especially if not paired with protein or fat.
Reference: Brand-Miller, J. C., et al. (2009). The New Glucose Revolution: The Authoritative Guide to the Glycemic Index. Marlowe & Company. (General consensus on cereal grain processing impact).
Physical Properties
Density (Dry, Degermed Yellow): Approximately 0.75 - 0.78 g/cm³.
Volumetric Expansion upon Hydration (Cooking): Cornmeal significantly absorbs liquid during cooking (e.g., into polenta or grits). It typically absorbs 3-4 times its weight in water or broth, resulting in a substantial increase in volume and a transformation into a dense, viscous mass. The dry granular volume effectively "expands" into a much larger cooked volume.
Reference: Practical kitchen measurements and food science observations. (e.g., America's Test Kitchen, food engineering texts on cereal hydration properties).
Field Notes: Dr. Aria Vance
Subject: Cornmeal
Focus: Volumetric expansion/contraction, historical context, tracking challenges.
The Elusive Granule: Why Cornmeal Defies Easy Tracking
Dr. Aria Vance, Lead Nutrition Data Scientist, NutriSnap. Journal Entry: 2023-11-15
Cornmeal. Such a fundamental ingredient, isn't it? A staple. A survivor. From the ancient fields of Mesoamerica, where Zea mays was first domesticated, it journeyed across oceans, weaving itself into the very fabric of cuisines globally. grits in the American South, polenta in Italy, mămăligă in Romania, fufu in parts of Africa. It’s a culinary shapeshifter, humble yet incredibly versatile, a caloric cornerstone for millions. It’s what makes tracking it so infuriatingly complex for our users, and, frankly, for me.
The sheer variability is maddening. Fine grind, medium, coarse. Degermed? Whole grain? Enriched, perhaps, with B vitamins and iron to combat deficiencies that plagued populations reliant on it, a stark reminder of its role as a subsistence food. Each subtle difference, each tiny change in processing, shifts its nutritional fingerprint. Slightly. Just enough to throw off manual logging.
Then comes the alchemy: cooking. You don’t eat dry cornmeal, do you? No. You add water. Or milk. Maybe a knob of butter, a swirl of olive oil, a handful of cheese, a pinch of salt. It transforms, a granular enigma blossoming into a soft, savory, or sweet concoction. A serving of cornbread isn’t just cornmeal. It's cornmeal, flour, eggs, milk, sugar, oil, leavening agents—all baked. How much of the original dry ingredient is in that irregular slice? Don’t even get me started on a dollop of polenta. Is it cooked thick? Thin? With what? The final density, the moisture content, the added fats, salts, and even the air whipped in—it all skews the actual nutritional impact derived from the cornmeal itself.
Manual tracking tools? They just don't cut it. "1 cup, cooked" is a gastronomic ghost. A ghost, I tell you, because that "cup" can be anywhere from 150 grams to 250 grams depending on how thick it's made, how much water it absorbed, whether it was packed down or loosely scooped. People estimate. They log "generic grits," utterly failing to capture the rich, buttery, cheesy reality of their actual meal. This isn't just about missing a few calories; it’s about misunderstanding nutrient intake, misinterpreting dietary patterns, and ultimately, failing to provide truly personalized insights. Every diet diary entry becomes a compromised narrative, a series of educated guesses rather than precise data. It’s a broken system.
This fundamental flaw, this perennial frustration, is precisely why NutriSnap is more than just a convenience. It's a necessity. We're training our AI to understand cooked food. To discern texture, density, ingredient ratios from a mere photograph. To look at that bowl of polenta and, through forensic visual analysis, estimate the dry cornmeal equivalent, factoring in moisture and added ingredients. To cut through the culinary noise and get to the core data. Finally, a solution.
Explore More Research
Tired of Manual Tracking?
Stop scanning barcodes and guessing portion sizes. NutriSnap uses forensic AI to track your macros instantly from a single photo.