
Mushrooms are a valuable food source due to their biological compounds, especially polysaccharides, and their supplementation into starchy foods is a hot topic. While mushrooms are a good source of protein, vitamins, minerals, and antioxidants, they are also a source of carbohydrates. The amount of carbohydrates in mushrooms varies depending on the type of mushroom. For example, a cup of whole white button mushrooms weighing 96 grams contains 3.1 grams of carbohydrates, while a single oyster mushroom is said to have 9.52 grams of total carbohydrates. Medicinal mushrooms generally have less than 5% starch, but some retail mushroom supplement products may be diluted with fillers such as starch, reducing the amount of active medicinal compounds in the product.
| Characteristics | Values |
|---|---|
| Carbohydrates in mushrooms | Carbohydrates are one of the three primary macronutrients, along with fat and protein. Mushrooms are a whole food that contains natural fibre and carbohydrates. |
| Carbohydrate content | One cup of whole white button mushrooms, weighing 96 grams, contains 3.1 grams of carbohydrates. |
| Starch content | Medicinal mushrooms generally have less than 5% starch. |
| Health benefits | Mushrooms contain protein, vitamins, minerals, and antioxidants. They can help with muscle movement, learning, and memory. |
| Health benefits of starch regulation | Mushroom polysaccharides have a hypoglycaemic effect and can help regulate starch digestion, thereby stabilising blood glucose levels. |
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What You'll Learn
- Mushrooms are a valuable food source due to their biological compounds
- Mushrooms contain multiple bioactive compounds, including dietary fibre
- The supplementation of mushroom materials into starchy foods is a hot topic
- Medicinal mushrooms generally have less than 5% starch
- Mushroom powder can be used as a high-value ingredient to improve the nutritional profile of starchy foods

Mushrooms are a valuable food source due to their biological compounds
Mushrooms are also rich in health-boosting vitamins, minerals, and antioxidants. For example, mushrooms exposed to ultraviolet light are a good source of vitamin D, which is important for bone and immune health. Cremini mushrooms are an excellent source of zinc, which is important for the immune system and optimal growth in infants and children.
The presence of an amino acid called glutamate gives mushrooms their umami taste, making them a good substitute for meat in many dishes.
In addition, mushrooms contain multiple bioactive compounds, including polysaccharides, which have been shown to have hypoglycaemic effects. The supplementation of mushroom materials into starchy foods can help regulate starch digestion and stabilise blood glucose levels. Different mushroom species have polysaccharides of different structures, which can impact the physical properties of starchy foods, such as hardness and volume.
Furthermore, mushrooms contain non-nutritive plant substances such as indoles, polyphenols, and carotenoids, which have been shown to have antioxidant, anti-inflammatory, and anticancer effects.
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Mushrooms contain multiple bioactive compounds, including dietary fibre
Mushrooms are a good source of dietary fibre, which is a type of carbohydrate. Carbohydrates are one of the three primary macronutrients, along with fat and protein. They are broken down into glucose, which provides energy. Fibre is an exception, as it does not directly provide energy but nourishes the friendly bacteria in the digestive system. Mushrooms are a source of “whole” carbohydrates, which are unprocessed and retain their natural fibre. Eating real, unprocessed foods is important for health.
The amount of carbohydrate in mushrooms varies by species. For instance, a cup of whole white button mushrooms (96 grams) contains 3.1 grams of carbohydrate. In contrast, a single piece of oyster mushroom is said to have 9.52 grams of total carbs, with 3.6 grams of fibre. A single portabella mushroom has 4.26 grams of total carbs, with 1.3 grams of fibre. Meanwhile, a single shiitake mushroom (19 grams) contains 1.3 grams of total carbs.
The polysaccharides in mushrooms have been found to have significant hypoglycaemic effects. They can form a physical barrier during starch digestion and inhibit starch gelatinisation. This can help regulate starch digestion and stabilise blood glucose levels, reducing the risk of chronic health issues associated with elevated blood glucose, such as oxidative stress and insulin resistance. Mushroom powder can be incorporated into starchy foods to improve their nutritional profile and reduce their glycaemic index.
It is important to note that some mushroom products may contain fillers or starch from the grain on which they are grown, which dilutes the amount of active medicinal compounds. Medicinal mushrooms generally have less than 5% starch, and testing kits are available to determine the presence of starch in mushroom products.
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The supplementation of mushroom materials into starchy foods is a hot topic
Mushrooms are a valuable food source due to their biological compounds, especially polysaccharides. The supplementation of mushroom materials into starchy foods is a hot topic. Mushrooms are low in calories and fat and contain modest amounts of fibre, protein, vitamins, minerals, and antioxidants. They also contain a small amount of vitamin D, and are the only vegan, non-fortified dietary source of this vitamin.
The addition of mushroom polysaccharides has an important impact on the gelatinisation and digestibility of starch molecules, and the physical quality of products. This is related to the interaction between starch and mushroom polysaccharides. The interactions include crosslinking, entanglement, encapsulation, or coating on the surface of starch granules via hydrogen bonding.
Mushroom polysaccharides can have a hypoglycaemic effect during starch digestion because they form a physical barrier to digestive enzymes and inhibit starch gelatinisation. This can help to stabilise blood glucose levels and prevent excessive digestion of starch granules, which is associated with oxidative stress and insulin resistance, and can induce many chronic health issues.
Studies have shown that the addition of mushroom powder to wheat bread significantly increases the total phenolic content and reduces the expected glycaemic index. This suggests that mushroom powder could be used as a high-value ingredient to improve the nutritional profile of starchy foods and reduce their glycaemic index.
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Medicinal mushrooms generally have less than 5% starch
Mushrooms are a valuable food source, providing protein, vitamins, minerals, and antioxidants. They are also a good source of dietary fibre and bioactive compounds. Mushrooms are low in calories and fat, and they contain modest amounts of fibre and nutrients. They are also a source of choline, which assists in muscle movement, learning, and memory, and they are the only vegan, non-fortified dietary source of vitamin D.
However, not all mushroom products are the same. Some products labelled as mushrooms may be made from "mycelium on grain", which contains no mushrooms at all. These products can be high in starch, which dilutes the amount of active medicinal compounds and fungal material. Medicinal mushrooms, on the other hand, generally contain less than 5% starch.
You can test whether a mushroom product contains fillers by performing a simple colour-changing test using iodine. This can help you determine whether a product is pure mushroom or contains other starch fillers.
It is important to know which mushrooms are edible, as some contain deadly toxins or high levels of heavy metals and other harmful chemicals. Always buy mushrooms from a reliable source.
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Mushroom powder can be used as a high-value ingredient to improve the nutritional profile of starchy foods
Mushrooms are a valuable food source due to their biological compounds, especially polysaccharides. They are low in calories and fat, and contain modest amounts of fibre and various nutrients, including protein, vitamins, minerals, and antioxidants. They also contain non-nutritive plant substances, such as polysaccharides, indoles, polyphenols, and carotenoids, which have been shown to have antioxidant, anti-inflammatory, and anticancer effects.
Mushroom polysaccharides can also have a hypoglycaemic effect during starch digestion by forming a physical barrier to digestive enzymes and inhibiting starch gelatinisation. This can help to regulate starch digestion and stabilise blood glucose levels, which is valuable in preventing chronic health issues associated with elevated blood glucose levels, such as oxidative stress and insulin resistance.
Studies have shown that the addition of mushroom powder to wheat bread significantly increased the total phenolic content and decreased the reducing sugar, hydrogenated index, and expected glycemic index. These results suggest that mushroom powder can be used to improve the nutritional profile and reduce the glycaemic index of starchy foods.
It is important to note that not all mushroom products are pure mushrooms and may contain added starch as a filler. Medicinal mushrooms generally have less than 5% starch, and starch testing can be performed to determine the presence and amount of starch in mushroom products.
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Frequently asked questions
Mushrooms are not high in starch. Medicinal mushrooms generally have less than 5% starch. However, mushroom powder can be added to starchy foods to improve their nutritional profile and reduce their glycaemic index.
A starch test can be used to determine whether a mushroom product contains fillers. The test costs $5 and involves adding mushroom powder to warm water and then using iodine to confirm the presence of starch.
Adding mushroom powder to starchy foods can reduce their glycaemic index and improve their nutritional profile. This is because mushroom polysaccharides can have a hypoglycaemic effect during starch digestion, forming a physical barrier to digestive enzymes and inhibiting starch gelatinisation.
Mushrooms are a healthy food because they are low in calories and fat, and contain fibre and various nutrients, including vitamins, minerals, antioxidants, and protein. They also contain non-nutritive substances such as polysaccharides, indoles, polyphenols, and carotenoids, which have been shown to have antioxidant, anti-inflammatory, and anticancer effects.

























