Can you eat yam if it turns purple?

May 20, 2023
After the autumn, a variety of food in the farm are beginning to mature, yam is the specialty of this season, belongs to the underground tuber, can be steamed, can be boiled, can be fried can also do soup, are very delicious, but some yams are purple, this is what happened, yams become purple can eat?

Can you eat yams that turn purple?

The yam turns purple can be eaten depending on the specific situation.

Normal purple can eat

Some of the yam skin with a layer of purple, which is related to the soil and variety of planting, especially the most common iron stick yam, after peeling the inside of the yam meat with a light purple, this purple yam can be safe to eat; yam contains phenols, classification oxidase, and the air contains oxygen, after the yam peel will react, the resulting quinone will appear brown or black, lightly oxidized There is also a lavender color, can also be eaten.

Abnormal purple color cannot be eaten

Yam and sweet potatoes, potatoes can be stored for a long time, but need to pay attention to the loss of water yam, if stored for too long, yam in a large number of water loss, or part of the beginning of corruption, there will be yam heart purple phenomenon, this yam with a certain amount of toxins, not suitable for consumption.

How to prevent yam from turning purple

Prevent oxidation

Yams in direct contact with the air after peeling will occur oxidation, discoloration, therefore, yams in the peel as soon as possible after putting into salt water, vinegar water soaking, or sprinkle lemon water on the surface of the yam can also prevent oxidation discoloration.

Do not store for a long time

Although yam can be stored for a long time, but in the storage process pay attention to the loss of moisture, but also need to avoid light, heat, so as not to sprout yam, purple heart and sprouted yam have toxins, good storage methods can prevent purple, and eat as soon as possible to avoid poisoning.

Precautions for eating yam

1. yam is a high starch food, containing a lot of energy, therefore, yam is not suitable for excessive consumption to avoid obesity, high blood sugar and other phenomena. 2. Yam contains some allogeneic proteins, which are allergenic substances, therefore, it is not suitable for people with allergies to eat yam to avoid skin itching, throat swelling, breathing difficulties and other allergies.
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