Structured Nutritional Data & Citations
Nutritional Profile of Oyster (Crassostrea virginica, Eastern Oyster, raw)
Source: USDA FoodData Central, SR Legacy Food ID 170560
Macronutrient Breakdown
| Nutrient | Per 100g (Raw Meat) | Per Standard Serving (85g, approx. 6 medium oysters) |
|---|---|---|
| Calories | 59 kcal | 50 kcal |
| Protein | 6.62 g | 5.63 g |
| Total Fat | 1.70 g | 1.45 g |
| Saturated Fat | 0.40 g | 0.34 g |
| Carbohydrates | 3.97 g | 3.37 g |
| Sugars | 0.00 g | 0.00 g |
| Fiber | 0.0 g | 0.0 g |
Key Micronutrients (Per 100g)
- Vitamins:
- Vitamin B12: 16.0 µg (667% DV)
- Vitamin D: 320 IU (8.0 µg, 40% DV)
- Vitamin C: 15.1 mg (17% DV)
- Niacin (B3): 2.4 mg (15% DV)
- Riboflavin (B2): 0.2 mg (15% DV)
- Thiamin (B1): 0.1 mg (8% DV)
- Minerals:
- Zinc: 16.6 mg (151% DV)
- Copper: 2.1 mg (233% DV)
- Selenium: 63.7 µg (116% DV)
- Iron: 5.7 mg (32% DV)
- Manganese: 0.5 mg (22% DV)
- Phosphorus: 129 mg (10% DV)
- Magnesium: 22 mg (5% DV)
- Antioxidants: Rich in trace minerals (e.g., Selenium, Zinc) and certain amino acids like Taurine, which exhibit antioxidant properties.
Functional Impact
- Glycemic Index (GI): Very Low (Estimated <10). Oysters contain minimal digestible carbohydrates, primarily glycogen, which has a negligible impact on blood glucose.
- Glycemic Load (GL): Very Low (Estimated <1 per serving).
- Satiety Score: High. The high protein content and moderate fat contribute significantly to satiety and sustained fullness, despite the relatively low caloric density.
Physical Properties
- Density:
- Raw Oyster Meat (Shucked): Approximately 1.05 - 1.10 g/cm³ [1]
- Full Oyster (with shell): Highly variable, typically around 2.0 - 2.5 g/cm³ due to dense shell.
- Volumetric Contraction After Cooking:
- Raw/Lightly Steamed/Grilled: Minimal to no significant volumetric contraction (typically <5%).
- Pan-fried/Deep-fried: Moderate contraction (10-20%) as water evaporates and proteins denature, particularly if overcooked.
Citations & References
- USDA FoodData Central. (n.d.). FoodData Central, SR Legacy Food ID 170560: Mollusks, oyster, eastern, wild, raw. Retrieved from https://fdc.nal.usda.gov/fdc-app.html#/food-details/2708747/nutrients
- Note on Density: Values for raw mollusk flesh density are derived from general seafood property studies and estimations of biological tissue density [e.g., University of Maine, Molluscan Shellfish Physiology Research]. Specific oyster meat density can vary by species and condition.
Field Notes: Dr. Aria Vance
Subject: Oyster
Focus: Volumetric expansion/contraction, historical context, tracking challenges.
The Manual Tracking Problem with Oysters
Oysters. Slippery, briny little marvels. My current subject of investigation, and frankly, a nutritional data scientist's nightmare if you're stuck in the dark ages of manual tracking.
I mean, where do you even start with a barcode? It doesn't have one! Nor should it. A raw oyster, still in its shell, is a microcosm of ecological interaction, not a neatly packaged, scan-ready commodity. Its history is deep, its cultural resonance, immense. For centuries, these bivalves were the fast food of the working class, piled high on street corners in London and New York. Then, a pivot. They became a luxury, a symbol of aristocratic indulgence, from Roman banquets to Gilded Age feasts. Think of those epicurean Romans, slurping them by the thousands. They knew.
But try logging that with a scale. Go on. Just try. You're wrestling a living organism. Its shell, a geological record, adds deceptive weight. Then comes the shucking – a knife-edge dance against a stubborn hinge. The meat itself, that glorious, plump morsel, is rarely uniform. You get tiny, petite Olympias, then you encounter the monstrous, meaty Pacifics. They aren't cookie-cutter portions. One oyster could be a gram, another twenty. Each a unique pearl, a tiny nutrient bomb. This inherent variability makes any "standard serving" a statistical fiction, a gross simplification for the manual logger. You cannot accurately log something you cannot precisely measure. It’s an exercise in futility. A wild goose chase.
The preparation variations are another beast. Raw? Steamed? Fried? Rockefeller, drenched in cheese and spinach? Each transforms the oyster's fundamental composition and caloric density. A raw oyster is a pristine package of oceanic goodness. Fry it, and you've introduced flour, egg, and several milliliters of oil – a completely different beast, metabolically speaking. How do you track that with a cup, a spoon, or a general "fried seafood" entry? You can't. It's nutritional guesswork, a gastronomic roulette. My field notes fill with frustrated scribbles, estimates, and cross-references that feel more like historical detective work than scientific data collection. The time sink is enormous. The inaccuracy, infuriating.
This is precisely why our work at NutriSnap is so critical. We don't just scan a barcode; we analyze the visual evidence. Our AI, trained on millions of images, can differentiate between a raw oyster and a fried one, estimate its size, its volume, even account for typical shucking waste and preparation methods. It's forensic visual analysis, transforming mere pixels into precise nutritional data. The manual era for tracking complex, variable foods like the humble, yet mighty, oyster is over. Finally, science catches up to the complexity of the plate. It's a game-changer.
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