2)  Nutrition:
Vitamins — B’s, folic acid, pro-vitamin D
Minerals — potassium, selenium, sulfur, sodium, iron, copper, germanium zinc, and phosphorus
Protein — essential amino acids precursers
Sugars — mannitol, xylose, ribose, glucose, galactose, mannose
Lipids — phospholipids, choline, sterols, sterol esters, free fatty acids, mono-, di-, and triglycerides, omega 6
Polysaccharides — glycogen, chitin, beta-D-glucans, anti -cancer (Adams 2008)
Essential oils — triterpenes
Antioxidants (Robaszkiewicz 2010)
Sterols — anti-inflammatory compounds
Enzymes — antibacterial, proteolytic, betaine

3）The effect and function of shiitake mushrooms
1. Improve the immune function of the body
The polysaccharide can improve the phagocytic function of the macrophages in mice, and it can also promote the production of T lymphocytes and improve the killing activity of T lymphocytes.
2. Delay aging
The water extract of shiitake mushrooms  has a certain elimination effect on hydrogen peroxide in the body.
3. Anti-cancer
One of the other compounds found in shiitake mushrooms, known as the shiitrine (also known as red ketopurine), lowers cholesterol levels.Mushrooms contain 12 times more antioxidants than malt, and four times as much as chicken liver.Compared with matsutake mushrooms and grifola frondosa, it lowers blood pressure and ward off cancer.
Lower blood pressure, blood lipid and cholesterol
Mushrooms contain purine, choline, tyrosine, oxidase, and some of the nucleic acid material, can rise to fall blood pressure, cholesterol, cholesterol-lowering effect, and can prevent diseases such as arteriosclerosis, cirrhosis of the liver.
5. Treatment of diseases
Shiitake is also for the treatment of diabetes, tuberculosis, infectious hepatitis, neuritis, and can be used for indigestion, constipation, etc.

4）Use：
You might suspect that the tasty, familiar mushrooms in your grocery store aren’t very valuable — but think again. What may surprise you is just how many benefits of cremini (or white button) mushrooms are proven in studies.
These ordinary mushrooms are super dense with nutrients, including having more copper,potassium, protein and selenium than either oyster or shiitake mushrooms. They’re also a good source of phosphorus, zinc, niacin and pantothenic acid, especially when you cook them down and eat more than one cup at a time.
Research shows that extracts from creminis can reduce hormonal imbalances and prevent hormone-dependent types of cancer, especially breast cancer. A benefit of cremini mushroom nutrition is the high source of conjugated linolenic acid, which is a type of fatty acid that controls the production of estrogen and can stop cancerous tumor growth in some instances by blocking certain enzymes’ effects.
Similar to white mushrooms, porcinis, portabellas and morels are also mushrooms loaded with nutrients and antioxidants, so include in these recipes often too.

5） Basic prep:
Rinse mushrooms under cold running water to remove any possible debris. To rehydrate prior to use, place desired amount in a bowl and cover with boiling water. Soak until tender, usually 20 to 30 minutes. Drain and rinse, or rinse and add directly to recipes that will cook for at least 25 minutes.

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