There are 3 main types of protein powders that people tend to use. All have their place and associate strengths. Largely your personal goals and dietary requirements will dictate which type will benefit you most.
Protein Hydrolysates
These are produced from filtered protein sources and further purified using heating, chemical or by adding proteolytic enzymes. Due to their pre digested forms it’s widely accepted that these protein types are one of the fastest to be digested and absorbed.
These are often used by people who are chronically Ill or have metabolic issues. Some babies and young children may also put on these types of proteins to support protein digestion.
Protein Concentrates
These are traditionally derived from whole food sources but go through much less filtering compared to the other two forms. The macronutrient profile of a typical protein concentrate powder is 80% protein and 20% fats and carbohydrates.
These are often cheaper to produce and buy, but for many people are perfectly suitable and effective for their health and fitness goals.
Protein Isolates
Like all of the protein types these too are derived from natural protein sources, however compared to it’s concentrate counterpart has a higher protein ratio.
These types typically contain between 90-95% protein with the remaining 5-10% comprised of fat and carbohydrates.
Within these 3 main types are many different varieties of protein powders. The main difference being with plant based or animal based products. Macronutrient composition again vary, more some does micronutrient profiles and amino acid arrangements. This is important when it come to muscle protein synthesis and creating an anabolic environment for growth and repair.
Plant based varieties include but are not limited to the following:
Pea Protein
Extracted from legumes and yellow split peas this type of protein is very popular among the vegan and vegetarian community. Whilst pea protein does contain all of the 9 aminos needed to be considered “complete” some of them are trace amounts and because of that it’s widely considered to be an incomplete protein source. Pe protein digestion rates sit between whey and casein making it a good all round option. It is also high fibre; important for gut health, satiation and weight management.
Hemp Protein
Derived from hemp seeds and created by grinding them into a powder. This type of protein is less researched by growing rapidly in popularity. Hemp products have exploded in the last 1o years, and hemp protein is no exception. Whilst rich in omega 3s, that are great for mental health, heart health, skin and eyes. Hemp protein has a low amino profile which makes it a less attractive option when trying to promote lean muscle gains.
Brown Rice Protein
Similarly to most plant based proteins BRP is made by grinding down brown rice grains and filtering them into a protein powder. This protein source is extremely low in lysine and therefor not considered a complete protein source. Nonetheless like pea protein, BRP is popular for those who are vegan / vegetarian. It’s worth noting also that aminos like leucine, lysine and tryptophan ca all be supplemented independently of protein. If you are vegan or vegetarian this is potential more important for you to consider.
Animal based varieties include but are not limited to:
Whey
Derived from milk, this high quality protein type is fast acting and rapidly absorbed by the body. It has a complete amino profile which is important for mTOR signalling, MPS (muscle protein synthesis), growth and repair. Because of its fast acting nature this type of protein is best used after intense exercise.
Casein
Another derivative of milk. In fact before processing, milk protein is around 20% whey and 80% casein. Like whey it has a complete amino profile including high levels of leucine and lysine two key aminos to signal repair. Casein is much slower to be digested, therefor its consumption is best before bed or for periods where you’re not going to be consuming a protein source for 3/4 hours.
Egg
Considered a “complete protein” source. These forms are created from whole egg and egg whites. A great source of protein and an effective option to sustain satiation levels. For those who experience hunger more intensely or frequent supplementing with egg protein before a meal has been show to keep you fuller for longer.
Beef
Extracted and produced from beef. Compared to the other three animal based proteins, beef protein is much slower to digest and absorb. Compared to whey beef protein would largely be considered inferior. It has a lower bioavailability status and lower EAA and BCAA amino profile. That said meta-analysis findings of beef protein do find that for medium to long term results people who supplement with it can expect similar result when compared to whey.