Protein content
0.5 g of protein in 1 medium (182 g) of apple, or 0.5 g for every 100 kcal it supplies.
Share of this food's calories that come from protein - it is more of an energy food than a protein food.
| Protein per 100 kcal | 0.5 g |
|---|---|
| Protein per 100 g | 0.26 g |
| Protein per serving | 0.5 g in 1 medium (182 g) |
| Calories from protein | 2% |
| Leucine per serving | 0.02 g |
| Rank in fruits, per 100 kcal | 67th of 71 |
| Rank of all foods, per 100 g | 793rd of 796 |
| Share of 50 g Daily Value | 1% per serving |
| Protein quality | Incomplete protein |
One 1 medium, 0.5 g protein.
Every 100 kcal of apple brings 0.5 g of protein. On that measure it ranks 67th of the 71 fruits in this database and 792nd of all 796 foods on the site. Measured by weight instead, its 0.26 g per 100 g ranks 68th in its group.
Only about 2% of the calories in apple come from protein, so it is more of an energy food than a protein food. It is worth eating for other reasons; the protein it adds to a day is incidental.
USDA lists 0.17 g of fat per 100 g of apple, too little for a protein-to-fat ratio to mean much.
Set against canned pineapple, another fruit entry in the database, a serving carries about 0.5 g less protein (canned pineapple has 1 g per 1 cup).
It is an incomplete protein on its own; pairing it with other plant foods across the day covers the full range of essential amino acids. The serving quoted here is counted by piece at 182 g, and it covers about 1% of the 50 g FDA Daily Value for protein.
Serving sizes
| Portion | Weight | Protein | Calories |
|---|---|---|---|
| 100 g | 100 g | 0.26 g | 52 kcal |
| 1 medium (serving used here) | 182 g | 0.5 g | 95 kcal |
| 1 cup, quartered or chopped | 125 g | 0.3 g | 65 kcal |
| 1 cup slices | 109 g | 0.3 g | 57 kcal |
| 1 large (3-1/4" dia) | 223 g | 0.6 g | 116 kcal |
| 1 small (2-3/4" dia) | 149 g | 0.4 g | 77 kcal |
| 1 extra small (2-1/2" dia) | 101 g | 0.3 g | 53 kcal |
Portion weights are the household measures listed on the USDA record; protein and calories scale from the per-100 g figures.
Amino acids
| Amino acid | Per 100 g | Per serving | mg per g protein |
|---|---|---|---|
| leucine | 0.013 g | 0.02 g | 50 |
| lysine | 0.012 g | 0.02 g | 46 |
| valine | 0.012 g | 0.02 g | 46 |
| isoleucine | 0.006 g | 0.01 g | 23 |
| threonine | 0.006 g | 0.01 g | 23 |
| phenylalanine | 0.006 g | 0.01 g | 23 |
| methionine | 0.001 g | 0 g | 4 |
| histidine | 0.005 g | 0.01 g | 19 |
| tryptophan | 0.001 g | 0 g | 4 |
Per-100 g values are the amino acid analysis on the USDA record. The serving and per-gram-of-protein columns are arithmetic on those values; they are not a protein quality score.
Related
Highest-protein fruits per serving · Most protein-dense foods · Highest protein per 100 g
Quick answers
0.26 g. The 1 medium serving used on this page weighs 182 g and so carries 0.5 g.
0.5 g. That figure divides its 0.26 g of protein per 100 g by its 52 kcal per 100 g, so it does not depend on serving size.
No. On its own, the protein in apple is short of at least one essential amino acid; other protein sources across the day fill the gap.
About 1%. One 1 medium serving has 0.5 g, and the FDA Daily Value for protein is 50 g.
Figures from USDA FoodData Central record #171688 (Apples, raw, with skin (Includes foods for USDA's Food Distribution Program)), SR Legacy data. USDA data is in the public domain. Values are the published reference figures for that record, not lab measurements for a specific brand or batch.