It should be edible. The yellowing is due to exposure to air.

If there is no odor and the expiration date has not expired, you can eat it normally.

Looking at the bamboo fungus is damp, just picking the bamboo fungus is white after drying the color will be a little milky white, but put a long time will slowly turn yellow this is normal Oh, there is white estimated also with the damp has to do with, you remove the white part of the rest of you soak a little if there is no bad smell is still edible.

Bamboo fungus, also known as bamboo fungus, bamboo ginseng, common and available for consumption of three kinds: long-skirted bamboo fungus, short-skirted bamboo fungus and red bamboo fungus, is parasitized on the roots of dead bamboo a kind of cryptogamic fungus, the shape of a slightly similar net-like dry white snakeskin, which has a dark green fungus cap, snow-white cylindrical stipe, pink egg-shaped fungus, in the stipe at the top of the a meticulous white net skirt from the fungus cap downward spreading, known as the "Snow Skirt Fairy". "snow skirt fairy", "the flower of the mountain treasures", "the flower of the fungus", "queen of the fungus".

Bamboo fungus is rich in nutrients, flavor and taste, and has been listed as one of the "eight treasures of grass" since ancient times.

Bamboo fungus has the effect of nourishing and strengthening, benefiting the qi, tonifying the brain, nourishing the spirit and strengthening the body; tonifying the qi and nourishing the yin, moistening the lungs and relieving coughs, and clearing away heat and dampness.

Bamboo fungus has the effect of tonifying qi and nourishing yin, moistening the lungs to stop coughing, clearing heat and inducing dampness; it is used as a main treatment for lung deficiency and feverish coughing, laryngitis, dysentery, leucorrhea, hypertension, high blood pressure and high blood cholesterol, and other illnesses.

1. Brain Bamboo fungus is rich in a variety of amino acids, vitamins, inorganic salts, etc., has a nourishing and nourishing the brain. Inorganic salts, etc., has the effect of nourishing strong, beneficial to the brain, and nourishing the spirit and body.

2. It protects the liver and reduces the accumulation of fat in the abdominal wall, which is commonly known as "scraping oil", thus producing the effect of lowering blood pressure, blood fat and weight loss.

3. Improve resistance Bamboo fungus can supplement the body's essential nutrients, improve the body's immunity to disease.

4. Inhibit the occurrence of tumors The Miao people in Yunnan have a lower chance of getting cancer, which is feared to be related to the fact that they often use bamboo fungus to soak with glutinous rice and consume it together. Modern medical research has also proved that bamboo fungus contains ingredients that can inhibit tumors.