Structured Nutritional Data & Citations
Nutritional Profile: Capsicum annuum (Red Bell Pepper, Raw)
This section details the precise nutritional and physical characteristics of raw red bell peppers, based on robust scientific data.
| Nutrient Category | Metric | Per 100g Unit | Per Standard Serving (1 Medium Pepper, ~164g) | Reference |
|---|---|---|---|---|
| Energy | Calories (kcal) | 31 | 51 | USDA FDC ID: 170498 |
| Macronutrients | Protein (g) | 0.99 | 1.62 | USDA FDC ID: 170498 |
| Carbohydrates (g) | 6.03 | 9.89 | USDA FDC ID: 170498 | |
| Total Sugars (g) | 4.20 | 6.89 | USDA FDC ID: 170498 | |
| Dietary Fiber (g) | 2.10 | 3.44 | USDA FDC ID: 170498 | |
| Total Fat (g) | 0.30 | 0.49 | USDA FDC ID: 170498 |
Key Micronutrients & Antioxidants
- Vitamins:
- Vitamin C: Exceptionally high (127.7 mg/100g, 142% DV). Potent antioxidant, crucial for immune function and collagen synthesis.
- Vitamin A (RAE): High (157 µg/100g, 17% DV) derived from Beta-carotene (1624 µg/100g). Essential for vision, immune function, and skin health.
- Vitamin B6: Significant (0.286 mg/100g, 17% DV). Co-factor in numerous metabolic reactions.
- Folate: (46 µg/100g, 12% DV). Important for cell division and DNA synthesis.
- Minerals:
- Potassium: (211 mg/100g, 4% DV). Electrolyte critical for blood pressure regulation and nerve function.
- Manganese: (0.12 mg/100g, 5% DV). Involved in enzyme activation and bone development.
- Antioxidants:
- Capsanthin: Major carotenoid responsible for red color, powerful antioxidant.
- Quercetin: Flavonoid with anti-inflammatory properties.
- Lutein & Zeaxanthin: Carotenoids beneficial for eye health.
Functional Impact
- Glycemic Index (GI): Low (estimated 15-20). Minimal impact on blood glucose levels.
- Glycemic Load (GL): Very Low (1-2 per standard serving). Suitable for blood sugar management.
- Satiety Score: High. Due to significant water content (92% by weight) and dietary fiber, contributing to feelings of fullness.
Physical Properties
- Density: Approximately 0.95 - 1.0 g/cm³ (raw, deseeded).
- Volumetric Contraction After Cooking: Significant. Average volumetric reduction of 25-40% when sautéed, roasted, or grilled due to substantial water loss. For nutritional tracking, this necessitates post-cooking measurement or careful conversion factors.
Citations & References
- USDA FoodData Central. FDC ID: 170498. "Peppers, sweet, red, raw." Accessed 26 Oct 2023. Available from: https://fdc.nal.usda.gov/fdc-app.html#/food-details/170498/nutrients
- Atwater, W. O., & Woods, C. D. (1896). The Chemical Composition of American Food Materials. Bulletin (United States. Office of Experiment Stations), (No. 28).
- Brand-Miller, J. C., & Wolever, T. M. S. (2010). The New Glucose Revolution: The Authoritative Guide to the Glycemic Index. Marlowe & Company.
Field Notes: Dr. Aria Vance
Subject: Pepper
Focus: Volumetric expansion/contraction, historical context, tracking challenges.
Why Pepper Is Difficult to Track
Dr. Aria Vance, Lead Nutrition Data Scientist, NutriSnap
October 26, 2023. My focus this week: the humble, yet surprisingly complex, bell pepper. What a misnomer, too, thanks to Columbus's navigational flub and mistaken identity of Capsicum for Piper nigrum. So began centuries of culinary confusion, and honestly, a perennial headache for precise nutritional tracking. They originated in Central and South America, these vibrant beauties. Then, globetrotting they went, becoming staples from Hungarian goulash to Thai stir-fries. A true culinary chameleon.
But tracking them? Oh, the agony. The bane of macro counters everywhere. One bell pepper. Is it a small one, barely 80 grams, looking forlorn in the corner of the fridge? Or one of those gargantuan supermarket specimens, pushing 200 grams, practically bursting at the seams? There's no standardization. None! A "medium" bell pepper, that nebulous concept, varies wildly by region, by cultivar, even by the specific grocery store chain's supplier.
And then we cook them. You think you've measured 150 grams of raw, chopped gorgeousness. You sauté it. It shrinks! Volumetric contraction is a real, tangible issue. All that beautiful, life-giving water, evaporating into the ether, leaving a denser, smaller portion. Users log "1 cup chopped bell pepper." But was that before cooking? Or after? Did they deseed it? Or just cut around the core, leaving some of that pithy white stuff? Each variable introduces cascading error. It's like trying to calculate planetary orbits with a broken abacus. The amount of oil absorbed during sautéing, another layer of caloric obfuscation. My team spends hours trying to reconcile these discrepancies in self-reported data.
The manual logging process is fundamentally flawed. People eyeball. They guess. They get frustrated. They give up. It's not a failure of will; it's a failure of practicality. Who has time to meticulously weigh every single piece of produce, raw, then cooked, then account for water loss and oil gain? No one. That's why NutriSnap is a game-changer. Our AI isn't just counting pixels; it's performing forensic visual analysis. Volumetric estimation, texture analysis, recognizing cooking methods—it's all there. Snap a photo. Let the AI do the heavy lifting, finally solving the pepper problem, and countless others. The future of nutrition tracking is visual, and it’s finally precise.
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.