What are the black spots on sweet potatoes?

In this brief article, we will provide you with the answer to the query: “What are the black spots on sweet potatoes?”, discuss how to check if sweet potato is spoiled, and also talk about some benefits of eating sweet potatoes 

What are the black spots on sweet potatoes?

The black spots on sweet potatoes can mean many different things, such as oxidation or bruising. If there are only a few black spots, however, you can still consume the vegetable. 

It is important to check some aspects to confirm if your sweet potato is spoiled.

How to check if your sweet potatoes are good?

A lot of patches and holes

If there are heavy brown patches or even small holes on the outside of the sweet potato, even if those small portions can be removed, the sour flavor may have contaminated the rest of the sweet potato.

Noticing the roughness

Another method to tell if your sweet potato has gone bad is running your fingertips over the surface of the sweet potato; If the rind is shriveled and dry, it might be an indication that the vegetable is spoiling.

New roots

It is typical for the sweet potato to have roots, however, these are usually old roots from when it was still planted and pose no hazard. The issue arises when your sweet potato begins to develop new roots or little sprouts. 

The new roots will always be lighter in color than the old ones, making them easier to detect; if this is the case, your sweet potato has rotted.

Examine the inside

If you are unclear about the freshness of the sweet potato and suspect it has deteriorated, proceed as follows: 

Check the interior of the sweet potato and cut it into pieces or strips. If such dark patches appear, it is recommended to avoid eating them. These stains are unnoticeable from the outside, but they are readily removed once the vegetable is opened. 

What are the health benefits of sweet potatoes?

1. Avoid premature aging

Sweet potatoes, particularly the orange kind, contain high levels of beta-carotene, which is turned into vitamin A in the body. Furthermore, because sweet potatoes are high in vitamin C, a powerful antioxidant that protects the body’s cells from inflammation and free radicals, they promote tighter, wrinkle-free skin.


2. Maintains bowel health

Sweet potatoes, which are high in soluble and insoluble fiber, aid in the formation of fecal clumps and promote bowel movements, so reducing constipation.

Furthermore, sweet potato acts as a natural prebiotic by providing a food supply for the beneficial bacteria in the colon, therefore balancing the intestinal flora and treating and avoiding constipation.

3. It protects against diabetes

Despite having a high carbohydrate content, sweet potatoes are also abundant in fiber, resulting in a low glycemic index. This implies it helps to slow down sugar absorption after meals, reducing blood glucose increases. 

This sweet potato characteristic is vital for diabetes prevention, but it can also be advised in tiny doses for individuals who already have the illness.

4. Enhances muscular mass increase

Sweet potatoes are a fantastic source of energy, which is why they are popular among individuals who engage in strenuous activities. Sweet potatoes’ carbohydrate is gradually released due to their high fiber content, making them an excellent choice for individuals who want energy for extended durations of exercise.

5. Aids in weight reduction

Sweet potatoes can aid in weight loss since they include a high fiber content. They also have a low glycemic index. This means that it is digested more slowly and therefore gives you more satiety, helping to fight obesity. And, by releasing glucose gradually, it prevents it from being stored in the body as fat.


6. Helps to prevent heart disease

Sweet potatoes, particularly purple sweet potatoes, are high in anthocyanins, a type of antioxidant that improves vein function and reduces the formation of fatty plaques in the arteries, as well as lowering levels of “bad” cholesterol in the blood, thereby preventing diseases such as stroke, infarction, and atherosclerosis.


7. It boosts the immune system

Sweet potatoes have a good antioxidant function in the body due to their high levels of vitamin C, beta-carotene, and anthocyanins, boosting the immune system and avoiding illnesses such as colds and flu, as well as promoting wound healing.


8. Helps to prevent some forms of cancer

Sweet potatoes are high in fiber, which is crucial for boosting the good bacteria in the colon and maintaining intestinal flora balance. This bacterial equilibrium is one of the most essential ways of avoiding bowel cancer.

Sweet potatoes can help prevent other forms of cancer, such as prostate and breast cancer since they are high in antioxidants like vitamin C, beta-carotene, and anthocyanins, which protect cells from free radicals.

Other FAQs about Sweet Potatoes that you may be interested in.

Can you defrost sweet potatoes?

How long do sweet poatoes last once cut?

Why does sweet potato turn black?

Can dogs eat purple sweet potatoes?


In this brief article, we provided you with the answer to the query: “What are the black spots on sweet potatoes?”, discussed how to check if sweet potato is spoiled, and also talked about some benefits of eating sweet potatoes 


Jaron. “Black Spots On Sweet Potatoes – What Does It Mean?” Foods Guy (blog), January 19, 2021. https://foodsguy.com/black-spots-sweet-potatoes/.

umcomo.com.br. “Como saber se a batata doce está estragada.” Accessed December 29, 2021. https://comida.umcomo.com.br/artigo/como-saber-se-a-batata-doce-esta-estragada-26238.html.