Structured Nutritional Data & Citations
SECTION 1: SEO Data - Flour (All-Purpose Wheat, Enriched, Bleached)
Product Name: Flour, Wheat, All-Purpose, Enriched, Bleached
Nutritional Profile (per 100g serving):
| Nutrient Group | Per 100g Value | Unit |
|---|---|---|
| Energy | 364 | kcal |
| Protein | 10.3 | g |
| Carbohydrates | 76.3 | g |
| - Dietary Fiber | 2.7 | g |
| - Sugars (total) | 0.3 | g |
| Fat (total) | 1.0 | g |
| - Saturated Fat | 0.2 | g |
| - Monounsaturated | 0.1 | g |
| - Polyunsaturated | 0.4 | g |
Nutritional Profile (per Standard Serving: 1/4 cup, unsifted ~30g):
| Nutrient Group | Per 1/4 cup Value | Unit |
|---|---|---|
| Energy | 109 | kcal |
| Protein | 3.1 | g |
| Carbohydrates | 22.9 | g |
| - Dietary Fiber | 0.8 | g |
| - Sugars (total) | 0.1 | g |
| Fat (total) | 0.3 | g |
Key Micronutrients (per 100g, typical enriched values):
- Vitamins:
- Thiamin (B1): ~0.6-0.7 mg (50-60% DV)
- Riboflavin (B2): ~0.4-0.5 mg (30-40% DV)
- Niacin (B3): ~5-6 mg (30-40% DV)
- Folate (B9): ~120-150 µg (30-40% DV)
- Minerals:
- Iron: ~3-4 mg (15-20% DV)
- Selenium: ~18-20 µg (30-35% DV)
- Manganese: ~0.7-0.8 mg (30-35% DV)
- Phosphorus: ~100-110 mg (10% DV)
- Magnesium: ~20-25 mg (5-6% DV)
- Zinc: ~0.6-0.7 mg (5-6% DV)
- Antioxidants: Primarily trace amounts of ferulic acid, tocotrienols, and tocopherols (Vitamin E forms), though significantly reduced in refined flour compared to whole grain varieties.
Functional Impact:
- Glycemic Index (GI): High (typically 70-85, with values for derived products like white bread often around 75).
- Glycemic Load (GL) per Standard Serving (1/4 cup): Medium-High (approximately 16-19, based on ~22g net carbs and a GI of 75).
- Satiety Score: Low, primarily due to its high GI, low fiber content, and rapid digestion of refined starches, which often leads to quicker return of hunger compared to higher fiber or protein-rich foods.
Physical Properties:
- Density (g/cm³):
- Loose, spooned into cup: ~0.52 g/cm³ (equivalent to ~125g per cup)
- Compacted, scooped into cup: ~0.60 g/cm³ (equivalent to ~145g per cup)
- Volume Dynamics During Processing: While dry flour is a powder, when hydrated and subjected to leavening agents and heat during cooking (e.g., baking), it undergoes substantial volume expansion. Post-baking, products may exhibit minor volumetric contraction upon cooling due to moisture evaporation and structural settling, leading to a slight increase in density compared to their peak expanded state.
Citations & References:
- USDA FoodData Central. "Flour, wheat, all-purpose, enriched, bleached." FDC ID: 11116. U.S. Department of Agriculture, Agricultural Research Service. Accessed November 20, 2023.
- Atkinson, F.S., Foster-Powell, K., & Brand-Miller, J.C. (2008). International Tables of Glycemic Index and Glycemic Load Values: 2008. Diabetes Care, 31(12), 2281-2283.
- Holt, S. H. A., et al. (1995). The Satiety Index of Common Foods. European Journal of Clinical Nutrition, 49(9), 675-690.
Field Notes: Dr. Aria Vance
Subject: Flour
Focus: Volumetric expansion/contraction, historical context, tracking challenges.
Why Flour Is Difficult to Track
Flour. It's not just food; it’s civilization in a bag. From the earliest grain harvests of the Neolithic revolution, shaping our agricultural landscape, to the consecrated bread of global rituals, flour is a profound cultural artifact. But for the modern data scientist, for me, Dr. Aria Vance, Lead Nutrition Data Scientist at NutriSnap, it's often a nutritional ghost, a slippery culinary chameleon frustrating every attempt at precise tracking.
We've been measuring flour for millennia. Ancient Egyptians, Romans, grandmothers from every culture. Yet, the method remains brutally, maddeningly analogue. A "cup" of flour? My colleagues groan. A metric nightmare. Is it scooped? Leveled? Sifted? The density variance is enormous. A single cup of all-purpose flour can swing by 20% in weight, just based on technique. Trying to account for that user variability in a manual log? You're basically guessing. It’s a fool's errand. You might as well just throw darts at a calorie chart.
Then there’s the type. Wheat flour, yes, but is it whole wheat, boosting fiber and micronutrients that refined flour sheds like old skin? Or is it semolina, rye, oat, rice? Each, a distinct nutritional galaxy. And what about "flour" as an ingredient? It’s the hidden thickener in countless sauces, the binder in processed snacks, the crisping agent in fried delicacies. Who truly accounts for the two tablespoons of flour used to make that gravy? No one. It's too tedious. Too ingrained in the background.
The sheer volume of human behavior involved in its use makes manual data entry a non-starter for accuracy. People aren't going to meticulously weigh every gram of flour in their baking, let alone estimate it in a restaurant meal. The dream of precise nutritional insight crumbles before the reality of a kitchen scale and a busy evening. That's why NutriSnap exists. Forensic visual analysis. AI that sees the texture, the context, the transformation. It isn't just counting pixels; it's understanding the fundamental physics of the meal, the very essence of the flour's role, from initial powder to final product. Finally, a solution that truly gets it.
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