
Portabella mushrooms are a type of fungus and are the mature form of Agaricus bisporus, the most popular species of edible mushroom. They are widely consumed and are known to be healthy, low in fat and calories, and a good source of phytochemicals, vitamins, minerals, and antioxidants. Portabello mushrooms are also rich in copper and selenium and are known to have anti-inflammatory and anticancer properties. However, some concerns have been raised about the safety of consuming raw portobello mushrooms due to the presence of certain compounds, but the research is conflicting and inconclusive. Cooking portobello mushrooms is generally recommended, and they are versatile and can be cooked in various ways, making them a popular ingredient in many dishes.
| Characteristics | Values |
|---|---|
| Fat content | Low in fat |
| Calories | 100 grams of raw mushrooms have 22 calories |
| Nutritional benefits | Non-animal source of vitamin D, polysaccharides, polyphenols, carotenoids, antioxidants, anti-inflammatory properties, and anticancer properties |
| Health benefits | May reduce the risk of mild cognitive impairment (MCI) in older adults |
| Taste | Meaty, savoury, umami |
| Substitutes | Meat, cheese |
| Recipe | Stuffed with spinach, sun-dried tomatoes, cheese, onions, garlic, breadcrumbs, goat cheese, mozzarella, bell peppers, and hot sauce |
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What You'll Learn

Portabella mushrooms are low in fat and calories
Portabella mushrooms are a versatile ingredient that can be cooked in a variety of ways, including grilling, roasting, stir-frying, and sautéing. They are also popular as a meat substitute in vegetarian and vegan diets due to their meaty texture and low-calorie content.
Portabella mushrooms are indeed low in fat and calories. In fact, they are a good source of dietary fiber and B vitamins, including thiamine, riboflavin, niacin, and biotin. They also contain minerals such as selenium, copper, phosphorus, and electrolytes like potassium. Their high vitamin B content aids in maintaining high energy levels, supporting cognitive health, and helping the body recover from stress.
The polysaccharides present in portabella mushrooms act as food for beneficial gut bacteria, promoting the growth of these strains. This is particularly beneficial for immune function, as about 70% of the immune system is located in the gut. Additionally, the antioxidants in portabella mushrooms help combat free radicals, which can lead to oxidative stress and increase the risk of various health conditions such as diabetes, Alzheimer's disease, and Parkinson's disease.
Portabella mushrooms are a healthy and nutritious addition to any meal. They are low in fat and calories, making them suitable for various diets, including vegetarian, vegan, gluten-free, and low-calorie diets.
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They are a good source of fibre and vitamins
Portabella mushrooms are large cremini mushrooms with a firm texture and lots of flavour, making them perfect for stuffing. They are low in fat and carbohydrates, and a good source of fibre and vitamins.
One serving of stuffed portabella mushrooms contains 153 to 221 calories, 13 to 20 grams of carbohydrates, 8 to 13 grams of protein, 9 to 17 grams of fat, 441 to 539 milligrams of sodium, 4 to 5 grams of fibre, and 2 to 5 grams of sugar.
The fibre content of portabella mushrooms comes from the mushrooms themselves, as well as from the vegetables used in the stuffing. For example, spinach, which is a common ingredient in stuffed portabella mushrooms, is a good source of fibre.
Portabella mushrooms are also a good source of vitamins, including Vitamin A, Vitamin C, and Vitamin D. Vitamin A is important for maintaining healthy vision and immune function. Vitamin C is an antioxidant that helps protect the body's cells from damage and aids in the absorption of iron. Vitamin D is important for maintaining bone health and supporting the immune system.
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Portabellas may contain carcinogens when raw
Portabella mushrooms are a popular ingredient in vegetarian and vegan dishes, praised for their dense texture and flavour. They are often stuffed with vegetables and cheese and can be served as an appetiser, side dish, or main course.
However, there has been some debate about the safety of consuming raw portabella mushrooms, with some sources claiming that they may contain carcinogens. The concern surrounds a compound called agaritine, which is naturally found in several mushroom species, including portabellas. Agaritine has been flagged in some studies as a possible carcinogen, with research on mice finding that it caused organ mutations and an increase in tumours.
It is important to note that the studies on mice involved extremely high doses of raw mushrooms, and there is not enough research to support that eating raw portabellas would have the same effect on humans. In fact, some studies have found that mushrooms may have anticancer benefits, with one study concluding that eating 18 grams of mushrooms daily decreased cancer risk by 45%. Additionally, the Journal of Functional Foods found no association between cancer and agaritine consumed through mushrooms.
While the research is inconclusive, it is generally recommended to cook mushrooms before consumption. Cooking methods such as frying, microwaving, and boiling have been shown to reduce agaritine levels, with microwaving being the most effective method.
In conclusion, while portabella mushrooms may contain carcinogens when raw, the research is conflicting, and there is no definitive evidence that consuming them raw will cause cancer. However, to err on the side of caution, it is recommended to cook portabellas and other mushroom varieties before eating.
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They are rich in minerals and antioxidants
Portabella mushrooms are the same species as white button mushrooms and cremini mushrooms, which are the most popular species of edible mushroom. They are low in fat and calories, with 100 grams of raw mushrooms containing no fat and only 22 calories.
Portabella mushrooms are rich in minerals and antioxidants. They contain non-nutritive compounds like polysaccharides, polyphenols, and carotenoids, which have anti-inflammatory, antioxidant, and anticancer properties. In animal studies, mushrooms have been shown to stimulate immune cells and prevent the growth and spread of cancer cells. They also contain B vitamins like riboflavin, niacin, and pantothenic acid. Riboflavin is essential for energy production and helps the body metabolize fat, while niacin helps metabolize macronutrients like proteins, carbohydrates, and fats.
Portabella mushrooms are also a good source of prebiotics, which serve as food for the body's good gut bacteria or probiotics. These good bacteria help with digestion, maintaining a healthy immune system, and provide other health benefits.
When preparing stuffed portabella mushrooms, it is important to wipe the mushrooms clean and remove the stems and gills. They can be filled with a variety of ingredients, such as spinach, onions, garlic, sun-dried tomatoes, and cheese. The mushrooms can be brushed with olive oil and seasoned with salt and pepper before being broiled to eliminate excess liquid. The filling is then added, and the mushrooms are broiled again until the filling is golden and browned.
Stuffed portabella mushrooms make a great appetizer, side dish, or meatless main course. They are hearty, filling, and tasty, yet low in carbs and fat.
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Portabellas are versatile and can be cooked in many ways
Portabella mushrooms are large cremini mushrooms with a firm texture and lots of flavour, making them perfect for stuffing. Their versatility means they can be cooked in many ways and stuffed with a variety of ingredients.
One popular method is to sauté them, which is a simple process that can be mastered by home cooks. To sauté portabellas, you can use seasonings such as garlic, thyme, tarragon, cayenne, or red pepper flakes, along with butter and olive oil or avocado oil. The mushrooms are sliced and cooked until golden brown, creating a succulent and savoury side dish.
Portabellas can also be stuffed with vegetables, cheese, and breadcrumbs. This recipe can be adapted to individual tastes and dietary preferences, such as vegetarian or vegan options. The mushrooms are first broiled to release water, then stuffed with a mixture of vegetables, cheese, and breadcrumbs, and broiled again until the filling is browned.
Portabellas can be used as a meat substitute in vegetarian and vegan diets due to their meaty texture and burger-bun size. They can be grilled, roasted, or sliced thinly and sautéed, offering a versatile cooking experience.
The mushrooms can be frozen for up to three months and are perfect for making in advance, then baking when needed. They are a tasty, filling, and healthy option, providing vitamins and nutrients while being low in carbs and fat.
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Frequently asked questions
No, portabella mushrooms are low in fat and calories. They are a good substitute for foods that are higher in fat and calories, such as meat and cheese.
Portabella mushrooms are rich in minerals such as potassium, phosphorus, copper, and selenium. They are also a good source of fiber and phytochemicals. Additionally, they contain non-nutritive compounds like polysaccharides, polyphenols, and carotenoids, which may have anti-inflammatory, antioxidant, and anticancer properties.
There are some concerns about the safety of consuming raw portabella mushrooms due to the presence of compounds like agaritine and hydrazine, which may have carcinogenic effects. However, the research is inconclusive, and cooking portabella mushrooms may reduce or eliminate these potential risks. It is always recommended to cook mushrooms thoroughly before consumption.

























