Usually, the formation of bamboo shoots is stimulated by the parasitic smut bacteria in bamboo shoots, and this black spot is also caused by smut bacteria, and a few black spots are not serious. But when the bamboo shoots turn gray or black, they can't be eaten, because the black powder mycelium will form dark brown thick-film spores, and the tissues of bamboo shoots will be covered with black spots, or even all of them will become black powder, and the quality will become worse. It is suggested that food should be eaten without pollution, deterioration and freshness.

Matters needing attention in purchasing bamboo shoots

1. Look at the appearance: If the appearance of Zizania latifolia is tender, bright and full, and the bamboo shoots are straight and smooth, generally speaking, the bamboo shoots are still fresh. This kind of water bamboo is still worth buying.

2. Look at bamboo shoots: If bamboo shoots are found to be flat, thin, curved and incomplete in shape during the purchase process, the taste of such water bamboo will be poor, and it is not recommended to buy them. At this time, you should choose a stout type, similar to a wooden stick type.

3, look at the color: the skin of Zizania latifolia must be very white. If it is found that some water bamboo is reddish, this yellow color is similar to turmeric, which means that water bamboo is old, and the taste of old water bamboo is naturally much worse, so it is not recommended to buy it.

4. Look at the bamboo shell: If the color of the bamboo shell at the top of Zizania latifolia is too green, or the bamboo shoots are all turquoise, such Zizania latifolia is overripe and aged, and its natural taste is not good. Never buy such water bamboo.

Please refer to Baidu Encyclopedia-Sunhe for the above contents.