What Is Pea Protein?
Pea protein is extracted from yellow split peas (Pisum sativum). The manufacturing process involves grinding peas, separating protein using water, filtering, and spray-drying. The result is a powder containing 80–90% protein by dry weight.
Pea protein has risen to become one of the most popular plant-based protein sources in recent years, largely due to its amino acid profile and digestibility.
Amino Acid Profile
Pea protein is a near-complete protein: it contains all 9 essential amino acids, but is moderately low in methionine:
| Amino Acid | Pea Protein (per 100g) | Adult Requirement |
|---|---|---|
| Leucine | ~8.0 g | Good |
| Isoleucine | ~4.3 g | Good |
| Valine | ~4.9 g | Good |
| Lysine | ~7.2 g | Excellent |
| Methionine | ~1.0 g | Low |
| Cysteine | ~0.9 g | Partially compensates |
Methionine deficiency is pea protein's main weakness. Solution: combine pea protein with rice protein (1:1 ratio), as rice protein is richer in methionine.
Pea Protein vs Whey: Muscle Building
A landmark study (Babault et al., 2015) compared pea protein and whey over 12 weeks of resistance training. Result: bicep thickness increased similarly in both groups. Pea protein wasn't significantly inferior to whey for muscle mass gains.
This was confirmed by Joy et al. (2013), who found similar muscle mass gains between pea protein and whey over 8 weeks.
Digestibility
Pea protein has a high PDCAAS (Protein Digestibility Corrected Amino Acid Score) — ~0.89, one of the highest among plant proteins. Digestibility is better than soy protein and significantly better than rice protein (Gorissen et al., 2018).
Pea hulls contain antinutrients (lectins, inhibitors), but the manufacturing process removes most of these.
Products
BioTechUSA Vegan Protein 500g Forest Berries is a popular plant-based protein blend that includes pea protein, available at maxfit.ee. It combines multiple plant protein sources that complement pea protein's amino acid profile, particularly for methionine.
Advantages
- Suitable for vegans and vegetarians
- Lactose-free and dairy-free
- Good leucine content for muscle building
- More environmentally friendly than animal protein
- Lower allergen risk than soy
Disadvantages
- Low methionine (solvable by combining with rice protein)
- Taste can be slightly "earthy" in unflavoured versions
- Leucine slightly lower than whey
- Not always the most affordable plant protein option
Combining with Other Proteins
Best strategies to complement pea protein's amino acid profile:
- Pea + rice (1:1): Creates a complete amino acid profile
- Pea + hemp: Hemp protein supplements methionine and adds omega-3 fatty acids
Summary
Pea protein is an effective plant-based protein source that rivals whey for muscle building. The methionine limitation is easily solved by combination. Ideal for vegans, vegetarians, and anyone seeking a dairy-free alternative. Explore products in the plant-based protein category at maxfit.ee.
FAQ
Is pea protein safe for people with soy allergies?
Yes — peas are legumes but not the same family as soy. Pea allergies exist but are rarer than soy allergies. People with soy allergies can usually consume pea protein without issues.
Is pea protein healthier than whey?
Both are healthy choices. Pea protein is more suitable for vegans and lactose-intolerant individuals. Neither is objectively healthier — it depends on your individual needs and diet.
How many grams of pea protein per day?
The recommendation is the same as for other proteins: 1.6–2.2 g per kg of body weight per day. Pea protein serves the same function as whey — simply distribute it across multiple meals.
References
- Babault, N., Paizis, C., Deley, G., Guérin-Deremaux, L., Saniez, M. H., Lefranc-Millot, C., & Allaert, F. A. (2015). Pea proteins oral supplementation promotes muscle thickness gains during resistance training. Journal of the International Society of Sports Nutrition, 12(1), 3.
- Joy, J. M., Lowery, R. P., Wilson, J. M., Purpura, M., De Souza, E. O., Wilson, S. M., ... & Jäger, R. (2013). The effects of 8 weeks of whey or rice protein supplementation on body composition and exercise performance. Nutrition Journal, 12(1), 86.
- Gorissen, S. H., Crombag, J. J., Senden, J. M., Waterval, W. H., Bierau, J., Verdijk, L. B., & van Loon, L. J. (2018). Protein content and amino acid composition of commercially available plant-based protein isolates. Amino Acids, 50(12), 1685–1695.
- van Vliet, S., Burd, N. A., & van Loon, L. J. (2015). The skeletal muscle anabolic response to plant- versus animal-based protein consumption. The Journal of Nutrition, 145(9), 1981–1991.
