It is not edible even if one end of the yam is moldy. Because if one end of a yam is moldy, even if the middle is good, it may cause diarrhea, vomiting, gastrointestinal discomfort and other symptoms after eating. Fresh food must be eaten as soon as possible. Once mold appears, it means it has gone bad, which will also affect the taste and nutritional value of the food, and even produce toxic substances.

Can you eat moldy yam?

You cannot eat yam even if one end of the yam is moldy. The entire root of the yam is relatively long. When you encounter a yam with a short root, you must pay attention to its incision. A yam that has become green mold and softened is said to be broken, and such a yam cannot be eaten.

How to judge whether a yam is bad or not?

1. To judge whether a yam is bad or not, first look at the appearance. There will be black spots or hyphae-like phenomena on the appearance of spoiled yam, like this It is not recommended to buy yam. If it is injured during a collision during excavation or transportation, it will also have a darker color locally, which is generally not affected.

2. If the yam becomes moldy and spoiled, you can usually smell a musty or rotten smell. If such a smell appears, it must have spoiled.

How to preserve yam

Put the yam in a cool and ventilated place. As long as the yam is not injured, there will generally be no problem if it is left for about 3 months.

Yam can be stored for a long time at temperatures below 4 degrees Celsius, so you can put yam in the refrigerator, but you cannot put it together with fruits. Because the ethylene released by fruits can deteriorate yams, yams and fruits should be stored separately. As long as this storage method is used properly, there will generally be no problems within one year.

What to do if yam changes color after being peeled

After peeling yam, it will come into contact with oxygen in the air and undergo an oxidation reaction. It will also occur when an iron kitchen knife comes into contact with an iron pot. Discoloration occurs due to browning reaction.

Generally, the discoloration of yams due to oxidation or browning does not affect consumption. It's just that the color is not that white. If it is discolored due to mold, it cannot be eaten.