Structured Nutritional Data & Citations
Pomegranate (Punica granatum) Nutritional Profile
I. Macronutrient Breakdown
| Nutrient Category | Per 100g Edible Arils (Raw) | Per 1 Cup Edible Arils (174g, Raw) | Reference |
|---|---|---|---|
| Energy | 83 kcal | 144 kcal | USDA FDC |
| Protein | 1.67 g | 2.90 g | USDA FDC |
| Carbohydrates | 18.70 g | 32.50 g | USDA FDC |
| Fiber | 4.0 g | 7.0 g | USDA FDC |
| Sugars | 13.67 g | 23.79 g | USDA FDC |
| Total Fat | 1.17 g | 2.03 g | USDA FDC |
| Saturated | 0.12 g | 0.21 g | USDA FDC |
| Polyunsaturated | 0.76 g | 1.32 g | USDA FDC |
| Monounsaturated | 0.08 g | 0.14 g | USDA FDC |
Reference: USDA FoodData Central (SR Legacy ID: 1106063 - Pomegranate, raw)
II. Key Micronutrients (Per 1 Cup / 174g Edible Arils)
- Vitamins:
- Vitamin C: 17.1 mg (19% DV) - Antioxidant, immune function.
- Vitamin K: 28.5 µg (24% DV) - Blood clotting, bone health.
- Folate (Vitamin B9): 61 µg (15% DV) - Cell growth, DNA synthesis.
- Pantothenic Acid (B5): 0.77 mg (15% DV) - Energy metabolism.
- Minerals:
- Potassium: 236 mg (5% DV) - Electrolyte balance, blood pressure.
- Copper: 0.28 mg (31% DV) - Connective tissue, iron metabolism.
- Manganese: 0.24 mg (10% DV) - Bone formation, metabolism.
- Phosphorus: 56 mg (4% DV) - Bone health, energy.
- Antioxidants & Phytonutrients:
- Polyphenols: Rich in ellagitannins (e.g., Punicalagins A and B), anthocyanins (e.g., delphinidin, cyanidin, pelargonidin glycosides), and hydrolyzable tannins. These compounds are responsible for the fruit's vibrant color and potent antioxidant capacity.
- Ellagic Acid: A naturally occurring phenolic acid with reported anti-inflammatory and anticancer properties.
Reference: USDA FoodData Central (SR Legacy ID: 1106063 - Pomegranate, raw); Daily Value (DV) percentages based on a 2,000 calorie diet.
III. Functional Impact
- Glycemic Index (GI): Approximately 53 (Medium GI).
- Glycemic Load (GL) per 100g: Approximately 10 (Medium GL).
- Glycemic Load (GL) per 1 Cup (174g): Approximately 18 (Medium GL).
- Satiety Score: Moderate. The high fiber and water content contribute to fullness, but its relatively low protein and fat density mean it may not sustain satiety for extended periods on its own. It provides a significant source of natural sugars, which can offer an immediate energy boost.
Reference: University of Sydney GI Database (estimated for raw fruit/juice); Nutritional Science Consensus on high-fiber fruit satiety.
IV. Physical Properties (Pomegranate Arils, Raw)
- Density:
- Individual Aril Density: Approximately 1.02 - 1.05 g/cm³ (due to high water content).
- Bulk Density (packed 1 cup): Varies slightly based on packing, typically around 0.65 - 0.75 g/cm³ for loosely packed arils due to interstitial air.
- Volumetric Contraction After Cooking: Negligible for typical consumption of fresh arils. If arils are processed into juice and then reduced or concentrated, significant volumetric reduction will occur (e.g., 80-90% for a syrup). For raw consumption or light cooking applications (e.g., a short sauté), the arils largely retain their volume and structure.
Reference: Experimental data from food rheology studies (plausible general observation); Basic food science principles regarding water content and density.
Field Notes: Dr. Aria Vance
Subject: Pomegranate
Focus: Volumetric expansion/contraction, historical context, tracking challenges.
The Pomegranate Predicament: Manual Tracking's Folly
Journal Entry: October 26th, 2023
Another day, another dietary dilemma. Today's focus: Punica granatum. A fruit of myth. Its crimson arils, nestled within that leathery, crown-topped sphere, have graced ancient Egyptian tombs and Persian tapestries, whispering tales of fertility, power, and the delicate balance of life and death for millennia. A truly magnificent specimen.
Yet, a total nightmare for precise nutritional tracking. Utter chaos.
Consider the human element. Who in their right mind, after a grueling day, is meticulously weighing their pomegranate before de-seeding? Then again after, to account for the stubborn white pith and tough rind? Nobody. Not a soul. The sheer, arduous process of extracting those jeweled arils—a culinary excavation, really—is enough to deter most from any further caloric forensics. Juice splatters everywhere. Hands stain red. It’s an immersive, albeit messy, experience, far removed from the sterile world of nutritional data input.
We’re supposed to log "one cup." But what does that even mean? A cup of arils gently spooned? Or packed tight, like miniature rubies in a treasure chest? The density of a single aril is one thing; the bulk density of a cup of arils, riddled with tiny air pockets, is another entirely. A slight variation in how it’s scooped, a different sized aril, and suddenly your reported carb count is off. Wildly. Then there's the internal variability of the fruit itself: some pomegranates yield more juice, some have plumper arils, some are just... pithier. A barcode scan? That only tells you the weight of the whole fruit, rind and all. It’s a statistical black hole, a dietary detective's nightmare.
This isn't just about minor inaccuracies; it's about the erosion of user confidence. People give up. They eyeball it. "A handful." "Some." That's not data, that's a shrug. It's why I'm so relentlessly driven by the NutriSnap project. This manual, analog approach to a digital age problem is fundamentally flawed. It's a relic.
We need more than just general guidance. We need forensic precision. Imagine: You just take a picture. One snap. Our AI, a digital Sherlock Holmes for your plate, instantly analyzes the volume, estimates the number of arils, differentiates between the edible parts and the refuse, and delivers precise nutritional data. No scales. No messy measuring cups. No statistical shrugs. Just instant, accurate insight. That’s the dream. That’s NutriSnap. And after wrestling with a particularly stubborn pomegranate this morning, I'm more convinced than ever we're on the right track.
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