Structured Nutritional Data & Citations
Research Journal: Bread
SECTION 1: SEO Data - Nutritional and Physical Profile of Commercial Whole Wheat Bread
Overview
This entry details the nutritional composition and key physical properties of commercially produced, enriched, and fortified whole wheat bread, a common staple in many global diets. Data is averaged from multiple commercial products.
Nutritional Composition (per 100g and per standard serving)
Bread Type: Commercial Whole Wheat Bread (enriched, fortified) Standard Serving: 1 slice (approx. 35g)
| Nutrient Group | Per 100g | Per Serving (35g) | % Daily Value (DV) per 100g* |
|---|---|---|---|
| Energy | 260 kcal | 91 kcal | 13% |
| Macronutrients | |||
| Protein | 13.0 g | 4.55 g | 26% |
| Carbohydrates | 45.0 g | 15.75 g | 16% |
| - Fiber | 7.0 g | 2.45 g | 25% |
| - Sugars | 4.0 g | 1.4 g | - |
| Fat | 3.5 g | 1.225 g | 4% |
| - Saturated | 0.7 g | 0.245 g | 3% |
Key Micronutrients (per 100g)
- Vitamins:
- Thiamine (B1): 0.30 mg (25% DV)
- Riboflavin (B2): 0.20 mg (15% DV)
- Niacin (B3): 4.50 mg (28% DV)
- Folate (B9): 70 µg (18% DV)
- Minerals:
- Iron: 2.5 mg (14% DV)
- Magnesium: 80 mg (20% DV)
- Phosphorus: 200 mg (16% DV)
- Selenium: 30 µg (55% DV)
- Zinc: 1.5 mg (14% DV)
- Antioxidants:
- Whole wheat bread contains various phenolic acids (e.g., ferulic acid), alkylresorcinols, and lignans, primarily from the bran and germ components. These compounds contribute to cellular protection against oxidative stress.
Functional Impact
- Glycemic Index (GI): 65-70 (Moderate-High). Varies based on grind size, processing, and additional ingredients. Whole grain integrity and fiber content generally lower GI compared to refined white bread.
- Glycemic Load (GL) per serving (35g): Approximately 10-12 (Moderate).
- Satiety Score (0-5 scale): 3.0-3.5/5.0. Fiber and protein content contribute to moderate satiety, improving over refined grain alternatives.
Physical Properties
- Density (baked, cooled, commercial sliced): 0.28 - 0.32 g/cm³. Average: 0.30 g/cm³. This reflects the porous, leavened structure.
- Volumetric Contraction after Baking/Cooling: ~10-15% reduction from peak oven volume. This is attributed to moisture loss, protein denaturation, starch retrogradation, and overall structural settling as the internal steam dissipates.
Citations & References
- USDA FoodData Central. SR Legacy FDC ID: 170425 (Bread, whole-wheat, commercially prepared, toasted). Data adapted for untasted commercial product.
- Foster-Powell, K., Holt, S.H.A., & Brand-Miller, J.C. (2002). International table of glycemic index and glycemic load values: 2002. American Journal of Clinical Nutrition, 76(1), 5-56.
- Salmenkallio-Marttila, M., Katina, K., & Autio, K. (2007). Effects of sourdough and fermentation on the characteristics of wheat bread. Journal of Cereal Science, 45(3), 302-311.
- Slavin, J. L. (2004). Whole grains and human health. Nutrition Research Reviews, 17(1), 99-110.
Field Notes: Dr. Aria Vance
Subject: Bread
Focus: Volumetric expansion/contraction, historical context, tracking challenges.
SECTION 2: The Manual Tracking Conundrum of Bread
Log Entry: 2024-10-27 Subject: Bread – The Ubiquitous Nightmare.
What is bread? Such a simple question. Yet, it unravels into an abyss. It's the staff of life, yes, absolutely. From the ancient Egyptians baking flatbreads to the sophisticated sourdoughs of modern artisan bakeries, it’s a universal constant, a foundational element of nearly every human civilization. Think about it: injera, pita, tortillas, baguettes, rye, brioche! Each a testament to ingenuity. Each a completely distinct nutritional profile.
And that, my friends, is where the trouble begins. Oh, the trouble.
As a Nutrition Data Scientist, I stare at these entries. "Bread, whole wheat, 1 slice." What slice? Whose slice? My grandmother's dense, homemade loaf, lovingly kneaded and baked to perfection, yields slices like bricks. A commercial sandwich slice? Floppy. An "artisan" boule from the farmer's market, hand-torn and delightfully irregular? Immeasurable. The standard deviations in weight, density, and therefore, calories, are breathtaking. They're maddening.
We tell people: "Track your intake. Be precise." And then we hand them a barcode scanner for a packaged product, or worse, ask them to estimate for something that defies estimation. "Was that a small piece of baguette, or a hefty chunk?" They shrug. They guess. Their memory, bless its fallible heart, often errs on the side of optimism.
It's not just the type of bread. Oh no, the rabbit hole goes deeper. Is it toasted? Toasting changes water content, potentially increasing density and thus calories per visual volume, though overall nutrient content remains the same per gram. Is it buttered? How much butter? "A thin layer," people say. A thin layer, by whose metric? The metric of a butter-loving chef, or a calorie-conscious dieter? These microscopic differences, these invisible decisions, they cascade. They distort. They sabotage wellness goals with insidious stealth.
The very essence of manual tracking for bread is flawed. It’s like trying to catch mist in a sieve. It’s tedious. It's wildly inaccurate. We spend hours educating clients on macro percentages, on nutrient timing, then send them into the wild armed with a scale and hope, only to have them meticulously weigh their oats but eyeball the daily sandwich bread. The data, my data, becomes a chaotic whisper, not a reliable beacon.
This relentless imprecision, this inherent human error... it's why NutriSnap was born. My team, we saw the chasm. We saw the frustration. No more guessing if that truly was one slice or one-point-five. No more hoping your "medium" sourdough was truly medium. Our AI, our visual recognition engine, it's not just identifying bread. It's forensically analyzing that specific piece of bread. Its volume. Its approximate density. Its context. It slices through the guesswork, literally. Finally, clarity in the chaos of carbs. It’s revolutionary. We are finally giving people the tools to truly know.
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