Protein content
2 g of protein in 1 cup (144 g) of blackberries, or 3.2 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 | 3.2 g |
|---|---|
| Protein per 100 g | 1.39 g |
| Protein per serving | 2 g in 1 cup (144 g) |
| Calories from protein | 13% |
| Rank in fruits, per 100 kcal | 6th of 71 |
| Rank of all foods, per 100 g | 706th of 796 |
| Share of 50 g Daily Value | 4% per serving |
| Protein quality | Incomplete protein |
One 1 cup, 2 g protein.
Every 100 kcal of blackberries brings 3.2 g of protein. On that measure it ranks 6th of the 71 fruits in this database and 607th of all 796 foods on the site. Measured by weight instead, its 1.39 g per 100 g ranks 22nd in its group.
Around 13% of the calories in blackberries come from protein, so it is more of an energy food than a protein food. It contributes to a day's protein total, but the bulk of what it delivers is energy rather than amino acids - treat it as a contributor alongside a denser source, not as the protein in a meal.
USDA lists 0.49 g of fat per 100 g of blackberries, too little for a protein-to-fat ratio to mean much.
Set against boiled plantain, another fruit entry in the database, a serving carries about 0.5 g more protein (boiled plantain has 1.5 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 measured by volume at 144 g, and it covers about 4% of the 50 g FDA Daily Value for protein.
Serving sizes
| Portion | Weight | Protein | Calories |
|---|---|---|---|
| 100 g | 100 g | 1.39 g | 43 kcal |
| 1 cup (serving used here) | 144 g | 2 g | 62 kcal |
The USDA record lists no other household measure for this food; protein and calories scale from the per-100 g figures.
Related
Highest-protein fruits per serving · Most protein-dense foods · Highest protein per 100 g
Quick answers
1.39 g. The 1 cup serving used on this page weighs 144 g and so carries 2 g.
3.2 g. That figure divides its 1.39 g of protein per 100 g by its 43 kcal per 100 g, so it does not depend on serving size.
No. On its own, the protein in blackberries is short of at least one essential amino acid; other protein sources across the day fill the gap.
About 4%. One 1 cup serving has 2 g, and the FDA Daily Value for protein is 50 g.
Figures from USDA FoodData Central record #173946 (Blackberries, raw), 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.