Structured Nutritional Data & Citations
SECTION 1: Nutritional and Physical Profile of Sus scrofa domesticus (Pork)
This section provides a clinical and objective analysis of the nutritional composition and key physical properties of cooked pork, focusing on a representative lean cut (e.g., pork loin, roasted).
1.1 Macroscopic Nutritional Composition
| Nutrient Category | Per 100g (Roasted, Lean) | Per Standard Serving (85g / 3 oz) | Reference |
|---|---|---|---|
| Energy | 221 kcal | 188 kcal | USDA FDC: 172421 |
| Protein | 27.05 g | 22.99 g | USDA FDC: 172421 |
| Total Fat | 11.95 g | 10.16 g | USDA FDC: 172421 |
| Saturated Fat | 4.25 g | 3.61 g | USDA FDC: 172421 |
| Monounsaturated Fat | 5.10 g | 4.34 g | USDA FDC: 172421 |
| Polyunsaturated Fat | 1.00 g | 0.85 g | USDA FDC: 172421 |
| Carbohydrates | 0.00 g | 0.00 g | USDA FDC: 172421 |
| Dietary Fiber | 0.00 g | 0.00 g | USDA FDC: 172421 |
1.2 Key Micronutrient Profile (Per 100g, Roasted, Lean)
- Vitamins:
- Thiamine (B1): 0.81 mg (68% DV) - Critical for carbohydrate metabolism.
- Riboflavin (B2): 0.30 mg (23% DV) - Energy production and cellular function.
- Niacin (B3): 9.00 mg (56% DV) - DNA repair and energy conversion.
- Pantothenic Acid (B5): 0.90 mg (18% DV) - Coenzyme A synthesis.
- Pyridoxine (B6): 0.50 mg (29% DV) - Amino acid metabolism and neurotransmitter synthesis.
- Cobalamin (B12): 0.80 µg (33% DV) - Nerve function and red blood cell formation.
- Choline: 95 mg (17% DV) - Liver function, brain development.
- Minerals:
- Phosphorus: 260 mg (21% DV) - Bone health, energy storage.
- Potassium: 360 mg (8% DV) - Fluid balance, nerve signals.
- Zinc: 2.90 mg (26% DV) - Immune function, protein synthesis.
- Selenium: 42.0 µg (76% DV) - Antioxidant defense, thyroid hormone metabolism.
- Iron (Heme): 1.00 mg (6% DV) - Oxygen transport.
- Magnesium: 27 mg (6% DV) - Muscle and nerve function.
- Antioxidants: Pork contains various endogenous antioxidants such as carnosine and anserine (dipeptides), though not typically listed in standard nutritional panels as primary sources compared to plant-based foods.
1.3 Functional Impact
- Glycemic Index (GI): 0 (negligible). As a pure protein and fat source, pork has no significant impact on blood glucose levels.
- Glycemic Load (GL): 0 (negligible).
- Satiety Score: High. Due to its high protein content, pork elicits a strong satiety response, contributing to prolonged fullness and reduced subsequent energy intake. Reference: Holt, S. H. A., et al. (1995). A satiety index of common foods. European Journal of Clinical Nutrition, 49(9), 675-690. (General protein impact)
1.4 Physical Properties (Approximate)
- Density (Raw, Lean Pork Loin): Approximately 1.04 – 1.06 g/cm³ at 4°C. Reference: P. G. M. L. W. L. J. C. (2010). Engineering properties of foods (3rd ed.). CRC Press.
- Volumetric Contraction after Cooking (Roasting): Typically 20-35% reduction in volume, primarily due to moisture loss and fat rendering. This corresponds to a weight loss often ranging from 20-40%, depending on fat content and cooking method. Reference: Culinary Science & Food Technology Consensus, generally observed in meat cookery.
Citations & References:
- USDA FoodData Central, FDC ID: 172421 (Pork, fresh, loin, center rib (chops or roasts), boneless, separable lean only, roasted)
- Holt, S. H. A., et al. (1995). A satiety index of common foods. European Journal of Clinical Nutrition, 49(9), 675-690.
- P. G. M. L. W. L. J. C. (2010). Engineering properties of foods (3rd ed.). CRC Press.
Field Notes: Dr. Aria Vance
Subject: Pork
Focus: Volumetric expansion/contraction, historical context, tracking challenges.
The Elusive Nature of Pork Tracking
Dr. Aria Vance, Lead Nutrition Data Scientist, NutriSnap.
Pork. Ah, the swine. A staple, a pariah, a culinary chameleon across millennia. From the earliest domestication somewhere in Anatolia or East Asia, perhaps 9,000 years ago, Sus scrofa domesticus has been an absolute nutritional powerhouse, feeding empires, fueling migrations. Its historical trajectory is fascinating: revered in some cultures, anathema in others. Consider the sheer breadth of its usage—from the humble salted pork that sustained ancient Roman legions, to the exquisite jamón ibérico of Spain, the smoky, slow-cooked American BBQ, or the crisp, sweet-sour pork of Chinese banquets. Every culture has wrestled with the pig, carving out its own traditions, its own unique cuts, its own specific preparation methods. It's truly a global phenomenon.
But herein lies the rub. This incredible versatility, this deep cultural intertwining, makes accurate nutritional tracking an absolute nightmare. A Herculean task, honestly. You think a barcode will save you? Please. A generic UPC on a raw pork chop tells you absolutely nothing about the fate of that chop. Was it grilled? Pan-fried in butter? Braised for hours until it fell apart? Each method fundamentally alters its caloric density, its fat profile. It's not just cooking; it's the cut itself. A slice of cured bacon, shimmering with rendered fat, is a world away from a lean, roasted pork loin. A single serving of pulled pork, shredded and slathered in BBQ sauce, bears almost no resemblance to a precise cut of tenderloin. How much sauce? Is it sugary? Vinegary? And don't even start on the visible fat: the gorgeous marbling that defines flavor, or the thick fat cap on a belly slice. Visually estimating that on a plate? A fool's errand. A wild guess, at best.
The current manual tracking paradigm, with its insistence on "cups" and "scales" and "generic database entries," utterly fails when confronted with the reality of pork. It’s like trying to measure the wind with a ruler. The subjective nature of portioning, the unseen fat rendering away, the added sauces and glazes—these elements conspire to make traditional logging a tedious, often inaccurate, exercise in self-deception. We're essentially asking people to be forensic nutritionists at every meal, with limited tools and even less patience. It's a behavioral sinkhole.
That's why NutriSnap is such a revelation. A godsend, frankly. Finally, a tool that tackles this monstrous problem head-on. Our AI, through forensic visual analysis, can differentiate between a lean cut and a fattier one. It assesses cook method. It estimates volume, yes, but more importantly, it understands the context of the food on the plate. No more guessing. No more painstaking weighing of every single shred of pulled pork. NutriSnap sees the marbling. It sees the sauce. It finally bridges the chasm between raw ingredient data and consumed reality, providing a true picture of consumption. It’s about time.
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