
Mushrooms are a great source of protein, offering a range of health benefits. While they may not contain as much protein per gram as meat, eggs, or dairy, they are still a valuable part of a plant-based diet. The highest protein content is found in fresh morel mushrooms, while dried oyster mushrooms have the highest protein content compared to other functional mushrooms. White button mushrooms, shiitake mushrooms, and oyster mushrooms are considered complete protein sources as they contain all nine essential amino acids.
| Characteristics | Values |
|---|---|
| Mushrooms with the highest protein content | White button mushrooms, Oyster mushrooms, Shiitake mushrooms, Lion's Mane, Portobello, Maitake, Enoki, Chanterelle, and Morel |
| Protein content of Oyster mushrooms | 3-4 grams of protein per 100 grams fresh |
| Protein content of dried functional mushrooms | Morels have the highest protein content when fresh |
| Protein content of White button mushrooms | 3.1 grams of protein per 100 grams fresh |
| Protein content of Shiitake mushrooms | 2.2 grams of protein per 100 grams |
| Mushrooms as a source of protein | Rich in vitamins, minerals, fiber, and bioactive compounds |
| Mushroom protein compared to animal protein | Lower in quantity but comparable in quality |
| Mushroom protein compared to plant protein | Comparable in quality, but without the antinutrients found in plant proteins |
| Amino acids in mushrooms | Leucine, Lysine, Isoleucine, and Valine |
| Other nutrients in mushrooms | B vitamins, Vitamin D, Beta-glucans, Iron, Zinc, Selenium, and antioxidants |
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What You'll Learn
- Oyster mushrooms are a great source of protein, with 3-4g per 100g
- White button mushrooms contain up to 3.1g of protein per 100g
- Shiitake mushrooms are a complete protein source with medicinal benefits
- Lion's Mane mushrooms offer 3-4g of protein per 100g and support cognition
- Mushroom protein is highly bioavailable, with a high amino acid profile

Oyster mushrooms are a great source of protein, with 3-4g per 100g
Oyster mushrooms are an excellent source of protein, packing 3-4 grams of protein per 100 grams. This makes them a valuable addition to a plant-based diet, as they can provide a substantial protein punch comparable to some protein-rich vegetables like broccoli. With their mild flavour, meaty texture, and high protein content, oyster mushrooms are incredibly versatile in cooking. They are perfect for stir-fries, soups, stews, or grilled as "meaty" fajita strips.
Oyster mushrooms stand out not only for their protein quantity but also for their quality. They contain all nine essential amino acids required by the human body, including leucine, lysine, valine, isoleucine, and lysine. These amino acids play a pivotal role in muscle protein synthesis, making oyster mushrooms an excellent choice for those seeking to enhance muscle growth and repair. Additionally, oyster mushrooms have a high bioavailability, meaning the body can efficiently absorb and utilise the protein for various physiological functions.
While oyster mushrooms have a lower protein concentration than animal sources, they offer a sustainable and cholesterol-free alternative. They are also rich in antioxidants, contributing to a reduced risk of chronic diseases. Furthermore, studies indicate that mushroom protein may provide a longer-lasting feeling of fullness compared to other plant-based protein sources, aiding in weight management.
Oyster mushrooms are not just a good source of protein but also provide other essential nutrients. They contain B vitamins, vitamin D, and beta-glucans, which support the immune system and overall health. Their unique dietary fibres, such as chitin, aid digestion and provide health benefits not found in animal-based proteins.
In summary, oyster mushrooms are a great source of protein, offering 3-4 grams per 100 grams, along with a host of other nutritional benefits. They are a versatile and healthy addition to any diet, particularly plant-based ones, making them a true powerhouse of nutrition.
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White button mushrooms contain up to 3.1g of protein per 100g
White button mushrooms, also known as Agaricus bisporus, are a variety of mushroom that stands out for its impressive protein content. With up to 3.1g of protein per 100g of fresh weight, they are a valuable source of plant-based protein. This makes them a great option for those following a plant-based diet, as they can help to boost protein intake while also providing other important nutrients.
White button mushrooms have been cultivated for centuries and are one of the most accessible and economically significant mushrooms globally. Their cultivation techniques have been refined over the years, contributing to their widespread availability and affordability. This makes them a convenient and cost-effective way to increase protein intake, especially when compared to other plant-based protein sources.
In addition to their protein content, white button mushrooms offer a range of other nutritional benefits. They are a good source of essential amino acids, which are often deficient in plant-based proteins. Amino acids are crucial for protein synthesis, muscle repair, and overall health. White button mushrooms also contain bioactive compounds, which provide additional nutritional value and potential health benefits.
While the protein content of white button mushrooms is lower than that of meat, their protein quality is notable. The body can easily absorb and utilise the protein from these mushrooms, making it a high-quality plant-based protein source. This makes them a versatile ingredient, perfect for adding a protein boost to stir-fries, soups, stews, or even grilled dishes.
White button mushrooms are not only nutritious but also have a mild flavour and meaty texture, making them a tasty addition to various dishes. They are a great way to add both flavour and nutritional value to meals, especially for those following a plant-based diet who may be looking for alternative protein sources to supplement their intake.
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Shiitake mushrooms are a complete protein source with medicinal benefits
Shiitake mushrooms, scientifically known as Lentinula edodes, are native to the mountain regions of Japan, Korea, and China, where they grow on fallen logs. They have been used in traditional Chinese medicine for thousands of years, believed to boost health and longevity and improve circulation. Shiitake mushrooms are also one of the most popular mushrooms worldwide, with a rich, savory taste and diverse health benefits.
Shiitake mushrooms are a good source of protein and contain all nine essential amino acids. They also contain bioactive compounds that may protect against cancer and inflammation. For example, lentinan, a compound found in shiitake mushrooms, can heal chromosome damage caused by anticancer treatments. Eritadenine, another compound in shiitake, inhibits an enzyme involved in producing cholesterol.
Shiitake mushrooms are also a good source of key vitamins and minerals. They are high in B vitamins, vitamin D, copper, and selenium. The vitamin D levels in shiitake mushrooms can be enhanced by exposing them to UV light during growth. In addition, shiitake mushrooms contain antimicrobial compounds and have antiviral, antibacterial, and antifungal properties.
Overall, shiitake mushrooms are a nutritious food with potential medicinal benefits. They are a good source of protein and contain a variety of compounds that may have positive effects on human health. However, it is important to note that while shiitake mushrooms have been used in traditional medicine, more research is needed to confirm their proposed health benefits fully.
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Lion's Mane mushrooms offer 3-4g of protein per 100g and support cognition
While tofu, tempeh, and lentil stews are excellent protein sources for plant-based diets, mushrooms can provide a more satisfying umami flavour. Edible mushrooms contain protein and all nine essential amino acids. Some varieties, such as Oyster mushrooms, offer 3-4 grams of protein per 100 grams, almost doubling the protein content of broccoli.
Lion's Mane mushrooms, also known as Hericium erinaceus, hou tou gu, or yamabushitake, are large, white, shaggy mushrooms that grow on dead or dying hardwood trees. They have long been used in traditional Chinese medicine and as food in Asian countries such as China, India, Japan, and Korea. A 100-gram serving of Lion's Mane provides about 3-4 grams of protein, similar to Oyster mushrooms, and is comparable to broccoli in protein content.
Lion's Mane mushrooms are considered the world's first "smart mushroom," with proven cognitive benefits. They contain bioactive substances, including hericenones and erinacines, which stimulate brain cell growth and protect the brain from damage. Studies have shown that Lion's Mane supplementation can improve cognitive function and enhance memory, with potential benefits for those with dementia, Alzheimer's, and other neurological conditions.
The recommended dosage of Lion's Mane mushrooms for improving cognition is 3 to 5 grams per day. However, there is no standard dosage, and the appropriate amount may vary depending on individual factors such as age and overall health. It is always advisable to consult a doctor to determine the right dosage for your specific needs.
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Mushroom protein is highly bioavailable, with a high amino acid profile
Mushrooms are an excellent source of protein, offering a range of health benefits that make them a valuable addition to any diet, particularly plant-based ones. While they may not contain as much protein per gram as meat, mushrooms offer a high-quality protein that is easily absorbed and utilised by the body. This is due to the high bioavailability of mushroom protein, which refers to the extent and rate at which the body can absorb, digest, and use the nutrients.
White button mushrooms, for example, can contain up to 3.1 grams of protein per 100 grams of fresh weight. Oyster mushrooms are another variety that stands out for their protein content, with approximately 3-4 grams of protein per 100 grams. This puts them on par with broccoli and triples the amount of protein found in spinach. Lion's Mane mushrooms are also gaining popularity for their cognitive benefits and solid protein content of 3-4 grams per 100 grams.
The protein found in mushrooms is highly bioavailable, meaning the body can efficiently use it for tissue growth, repair, and maintenance. Studies on Amanita mushrooms, for instance, have shown that their protein digestibility is very high. Additionally, mushrooms contain all nine essential amino acids, including leucine, lysine, valine, isoleucine, and lysine. These amino acids play pivotal roles in muscle protein synthesis, making mushrooms an excellent choice for those looking to enhance muscle growth and repair.
The high amino acid profile of mushrooms is comparable to that of egg whites, and their bioavailability surpasses that of wheat and soybean. This makes mushrooms a valuable alternative to plant-based proteins, which often lack these essential amino acids. Furthermore, mushrooms provide additional nutrients such as B vitamins, vitamin D, and beta-glucans, which support the immune system and overall health.
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Frequently asked questions
Oyster mushrooms have the highest protein content on a per weight basis.
Yes, several other mushrooms are known for their high protein content, including Lion's Mane, Shiitake, White Button, Portobello, Maitake, Enoki, Chanterelle, and Morel.
Mushrooms have a higher ratio of protein to calories than chicken. However, they are not high in protein per gram, so you would need to eat a lot of mushrooms to get the same amount of protein as you would from meat or eggs.
Yes, mushrooms are a complete protein source, meaning they contain all nine essential amino acids. They also have a high bioavailability, so the body can easily absorb and utilise the protein for various physiological functions.

























