Structured Nutritional Data & Citations
Peach (Prunus persica) - Nutritional and Physical Data
Nutritional Profile (per 100g, raw, fresh)
| Nutrient Group | Metric | Value | Unit |
|---|---|---|---|
| Energy | Calories (kcal) | 39 | kcal |
| Macronutrients | |||
| Protein | 0.9 | g | |
| Total Fat | 0.3 | g | |
| Saturated Fat | 0.0 | g | |
| Monounsaturated Fat | 0.0 | g | |
| Polyunsaturated Fat | 0.1 | g | |
| Carbohydrates | Total | 9.5 | g |
| Fiber | 1.5 | g | |
| Sugars (Total) | 8.4 | g |
Standard Serving Nutritional Profile (1 Medium Peach, ~150g, raw, fresh)
| Nutrient Group | Metric | Value | Unit |
|---|---|---|---|
| Energy | Calories (kcal) | 59 | kcal |
| Macronutrients | |||
| Protein | 1.4 | g | |
| Total Fat | 0.5 | g | |
| Carbohydrates | Total | 14.3 | g |
| Fiber | 2.3 | g | |
| Sugars (Total) | 12.6 | g |
Key Micronutrients (per 100g)
- Vitamins:
- Vitamin C: 6.6 mg (7% DV)
- Vitamin A (as RAE): 16 µg (2% DV) - Significant Beta-carotene content for visual appeal, especially in yellow-fleshed varieties.
- Vitamin E: 0.73 mg (5% DV)
- Vitamin K: 2.6 µg (2% DV)
- Niacin (B3): 0.81 mg (5% DV)
- Minerals:
- Potassium: 190 mg (4% DV)
- Copper: 0.07 mg (8% DV)
- Manganese: 0.07 mg (3% DV)
- Antioxidants & Phytochemicals:
- Chlorogenic acid: A potent polyphenol, contributing to antioxidant activity.
- Anthocyanins: Present in red-skinned varieties, contributing to color and antioxidant benefits.
- Carotenoids (Beta-carotene, Lutein, Zeaxanthin): Particularly in yellow/orange-fleshed peaches, crucial for eye health.
Functional Impact
- Glycemic Index (GI): ~42 (Low)
- Glycemic Load (GL): ~5.1 (per 1 medium peach, Low)
- Satiety Score: Moderate, primarily due to fiber and water content. Contributes to feelings of fullness without excessive caloric intake.
Physical Properties
- Density (Fresh, raw, without pit): Approximately 0.95 - 1.05 g/cm³
- Volumetric Contraction after Cooking/Processing:
- Stewed/Baked: 15-25% due to water loss.
- Canned (in syrup): Significant apparent volume reduction (up to 30-40%) as fruit softens and liquid fills interstitial spaces, despite actual mass remaining similar if syrup is included. Water displacement is key.
Citations & References
- USDA FoodData Central. Peaches, raw. FDC ID: 170172. Available at: https://fdc.nal.usda.gov/fdc-app.html#/food-details/170172/nutrients (Accessed [Current Date])
- Atkinson, F.S., Foster-Powell, K., Brand-Miller, J.C. (2008). International Tables of Glycemic Index and Glycemic Load Values: 2008. Diabetes Care, 31(12), 2281-2283.
- Ramírez-Rodríguez, M.M., et al. (2020). Physical and Chemical Properties of Fruits and Vegetables. Academic Press. (General reference for density and physical properties of produce).
Field Notes: Dr. Aria Vance
Subject: Peach
Focus: Volumetric expansion/contraction, historical context, tracking challenges.
The Manual Tracking Problem: Why Peaches are a Nutritional Data Scientist's Nemesis
Journal Entry: Dr. Aria Vance, Lead Nutrition Data Scientist, NutriSnap.
Peaches. Oh, the peach. Prunus persica. A delightful, fuzzy sphere of sunshine. But for those of us trying to precisely quantify caloric intake, it's a slippery, frustrating adversary. From its ancient origins along the Yangtze River, traversing the Silk Road to Rome – "Persian apples," they called them! – this fruit has captivated humanity for millennia. Its cultural significance alone is profound; a symbol of immortality in Chinese folklore, a harbinger of summer's peak in the West. But its history, however rich, doesn't simplify our modern quest for exactitude. Not one bit.
My daily struggle? The sheer variability. You pick up a peach. Is it freestone or clingstone? The difference in pit size alone drastically alters the edible mass. A small, firm peach might weigh 120 grams. A colossal, juicy behemoth could easily hit 200 grams or more. A nearly 40% swing, just like that! And that's before you even consider ripeness. A slightly green, taut peach has a different sugar profile, a different water content, than one so ripe it practically drips nectar onto your hand. How does a standard barcode or a generic "medium peach" entry possibly capture that granular truth? It simply cannot. It's a blunt instrument for a nuanced biological reality.
Then comes preparation. Are you eating it raw, skin on? Or peeled, its delicate skin discarded along with potentially valuable fiber and phytonutrients? Sliced into a fruit salad, where arbitrary "cup" measurements are a notorious minefield of air pockets and inconsistent packing densities. Poached in syrup for a dessert? Grilled to caramelize those natural sugars, altering its water content and texture entirely? Each method twists the knife in the heart of our data integrity. Manually weighing every single peach, every single time, accounting for the pit's removal, factoring in the water loss from cooking—it's utterly unsustainable. It's tedious. It's a data entry nightmare that actively punishes the user for wanting accurate self-tracking. People give up. They guess. Wildly. The result? Garbage in, garbage out. Their dietary insights become skewed, their health goals harder to achieve. The whole system collapses under the weight of manual effort.
This is precisely why NutriSnap exists. My team poured years into this. We had to crack the code of forensic visual analysis. Our AI doesn't just "see" a peach. It dissects it. It analyzes subtle textural cues that betray ripeness. It estimates volume with unprecedented accuracy, even accounting for the unseen pit within. A quick photo, and our algorithms deconstruct the image into its core nutritional data points. It’s revolutionary. We are finally moving beyond the archaic methods of weighing scales and imprecise volumetric cups. Accuracy. Effortless. This is how we empower people. This is the future of nutritional tracking. Finally, the peach, in all its frustrating glory, yields to science.
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