Structured Nutritional Data & Citations
Research Journal: Sunflower Seed (Helianthus annuus)
Nutritional Profile (Per 100g / Per 28g Standard Serving)
| Nutrient Group | Per 100g (Dried, Shelled) | Per 28g Serving (Dried, Shelled) |
|---|---|---|
| Energy | 582 kcal | 163 kcal |
| Macronutrients | ||
| Protein | 20.78 g | 5.82 g |
| Total Carbohydrates | 20.00 g | 5.60 g |
| - Dietary Fiber | 8.6 g | 2.41 g |
| - Sugars (Total) | 2.62 g | 0.73 g |
| Total Fat | 51.46 g | 14.41 g |
| - Saturated Fat | 4.45 g | 1.25 g |
| - Monounsaturated Fat | 18.52 g | 5.18 g |
| - Polyunsaturated Fat | 23.14 g | 6.48 g |
Key Micronutrients (Per 100g, Significant Sources)
- Vitamins:
- Vitamin E (Alpha-tocopherol): 35.17 mg (234% Daily Value)
- Thiamin (B1): 1.48 mg (123% Daily Value)
- Vitamin B6: 1.34 mg (79% Daily Value)
- Folate (B9): 227 µg (57% Daily Value)
- Niacin (B3): 8.3 mg (52% Daily Value)
- Minerals:
- Magnesium: 325 mg (77% Daily Value)
- Phosphorus: 660 mg (53% Daily Value)
- Zinc: 5.0 mg (45% Daily Value)
- Selenium: 53 µg (96% Daily Value)
- Copper: 1.8 mg (200% Daily Value)
- Manganese: 1.98 mg (86% Daily Value)
- Antioxidants & Phytonutrients:
- Phytosterols (Beta-sitosterol, Campesterol, Stigmasterol): Approximately 270 mg/100g
- Phenolic Acids (e.g., Chlorogenic acid, Caffeic acid)
- Flavonoids (e.g., Quercetin, Kaempferol)
Functional Impact
- Glycemic Index (GI): Low (GI ≈ 20-30 for raw/lightly roasted, shelled seeds)
- Glycemic Load (GL): Very Low (GL ≈ 1-2 per 28g serving)
- Satiety Score: High. This is attributed to the synergistic effect of its dense nutrient profile, particularly the high fiber, protein, and healthy monounsaturated and polyunsaturated fat content. Contributes to prolonged gastric emptying, sustained energy release, and reduced subsequent caloric intake.
Physical Properties
- Density (Shelled, Raw): Approximately 0.65 g/cm³ (Varies slightly with moisture content and cultivar).
- Volumetric Contraction after Roasting: Minimal (<5% volumetric change). The primary effect of typical dry roasting is mass loss due to moisture evaporation (typically 3-7% of initial raw weight). Dry roasting may induce slight puffing due to internal gas expansion, which can counteract minor structural contraction, resulting in negligible overall volumetric alteration.
Citations & References
- USDA FoodData Central. (n.d.). Sunflower seed kernels, dried. Retrieved from https://fdc.nal.usda.gov/fdc-app.html#/food-details/2707584/nutrients (Accessed November 1, 2023).
- Atkinson, F. S., Brand-Miller, J. C., & Wolever, T. M. S. (2008). International tables of glycemic index and glycemic load values: 2008. Diabetes Care, 31(12), 2281-2283. (General methodology and data for common food items, including seeds).
- United States Department of Agriculture. (2015-2020). Dietary Guidelines for Americans. 9th Edition.
Field Notes: Dr. Aria Vance
Subject: Sunflower Seed
Focus: Volumetric expansion/contraction, historical context, tracking challenges.
The Manual Tracking Problem with Sunflower Seeds
Dr. Aria Vance, Lead Nutrition Data Scientist at NutriSnap
Sunflower seeds. Just look at them. The literal embodiment of the sun's golden gaze captured in a tiny, unassuming package. An ancient food, revered by indigenous cultures across the Americas, used in rituals, as a potent food source. It’s not just a casual snack; it’s a nutritional powerhouse, dense with micronutrients. Totally ubiquitous now, found in salads, trail mixes, bread, or just straight from the bag, often in-shell. But this very ubiquity, this casual consumption, makes it a veritable nightmare for anyone chasing granular macro and micronutrient data.
Seriously, how do you track this accurately? "A handful"? My hand is not your hand. A bodybuilder’s palm could swallow half a bag. The weight difference between "a sprinkle" and "a generous sprinkle" on a salad? Profound. And don't even get me started on the shell situation. In-shell seeds – what percentage of that weight is edible kernel versus inert shell? It varies by cultivar, by processing, by who shelled it! One batch might yield 60% kernel, another 70%. It’s like trying to weigh clouds.
Then you factor in preparation. Roasted? Salted? Honey roasted? Dill pickle flavored? Each alteration subtly shifts density, moisture content, and, critically, the nutritional profile. A dash of salt, a dusting of artificial flavor — these add mass and alter perception, yet our manual tracking tools demand precision. Weighing every single kernel is just absurd. Who has time for that? We're busy humans, not laboratory robots with micro-balances attached to our wrists. Barcode scanning helps, sure, but what if it’s from a bulk bin? What if it’s a homemade mix? The system breaks down.
The inherent variability, the sheer tediousness of trying to log this manually, fundamentally flaws the data we collect. We know sunflower seeds are excellent, but getting an exact read on how much of that excellence someone actually consumed? Nearly impossible with traditional methods.
This is precisely why NutriSnap is revolutionary. It’s practically clairvoyant. Our AI photo tracker uses forensic visual analysis. It doesn't need me to guess the shell-to-kernel ratio. It knows the difference between a raw kernel and a lightly roasted, salted one, just by looking. It accounts for density variances, for the visual cues of different preparations. Finally, a solution that understands the chaotic, beautiful reality of human eating patterns, cutting through the noise to give us the precise data we desperately need. This is the future of nutritional tracking.
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