This green color is an indication that the level of alkaloids has increased in the potato. If potatoes have a bitter taste, do not eat them.

But, if the green is extensive and your potato is mostly green, then it’s better to just throw the potato out. A Review of Important Facts about Potato Glycoalkaloids by Marita Cantwell. G1437 Green Potatoes: The Problem and the Solution. Dr. Also important: while cooked potatoes will stop producing solanine, cooking will not eliminate existing solanine. Potatoes sold in the US are typically low in solanineOne more bit of good news: When it comes to solanine, Olsen says that the potato industry has your back. If, writes author Alexander Pavlista, those potatoes had been exposed to light, which can easily increase solanine concentrations by 10, that same person could suffer to some degree after eating two pounds of potatoes. Have a food question? it usually doesn’t make its way into the bloodstream, it is often converted into a less harmful substance by the intestine, and it tends to be excreted pretty quickly. Solanine has a bitter taste and is an irritant to the digestive system that can cause paralysis in large quantities. Perishables Handling Newsletter. Subscribe to our newsletter for regular updates! The answer lies in the neighborhood around the green potato skin and flesh. If you peel green potatoes you will greatly reduce the alkaloid levels, since they localized just below the skin… but the potato may still taste bitter. Anyway, solanine, which also accumulates in those sprouting potato “eyes,” can cause some nasty things, including severe gastrointestinal distress, along with vomiting and diarrhea, and even death. MSU is an affirmative-action, equal-opportunity employer, committed to achieving excellence through a diverse workforce and inclusive culture that encourages all people to reach their full potential. The green color of the potato is caused by exposure to light. To prevent potatoes from turning green, store them in a cool, dark space with good air circulation.

Nora Olsen - Potato Specialist for the University of Idaho. Anyone else observed this? Still, a little bit of solanine isn’t going to hurt you—. Why do potatoes go green? While solanine is present in trace amounts in normal-looking potatoes, a 200-pound person would need to eat 20 pounds of not-green potatoes in a single day to reach toxic levels, according a report published by the University of Nebraska - Lincoln Extension. You just bought a bag of potatoes at the grocery store. I find green potatoes do not fall to make a quality mash- they stay harder as if not thoroughly cooked. If, writes author Alexander Pavlista, those potatoes had been exposed to light, which can easily increase solanine concentrations by 10, that same person could suffer to some degree after eating two pounds of potatoes. Therefore, people are turned away from eating green potatoes if not by color, then by taste. If it's green all over, however, she'll toss it. Send us your Eat Or Toss questions! And how much anti-green action should a reasonable potato eater take? The chlorophyll won’t hurt you, but it does indicate that something more sinister is happening inside the tuber. Tater Taught: Are Green Potatoes Poisonous? To have a digest of information delivered straight to your email inbox, visit https://extension.msu.edu/newsletters. If potatoes experience unfavorable conditions, such as excessive exposure to light, they can produce increased levels of these alkaloids. All information posted on this blog is thoroughly researched, but is provided for reference and entertainment purposes only. Beth Waitrovich, Michigan State University Extension - Excessive exposure to light also triggers the formation of chlorophyll, which explains the green color near the skin. Michigan State University Extension recommends looking carefully before purchasing at the store and avoid purchasing potatoes that already have started to turn green. According to PennState Extension, light causes the potato to produce chlorophyll and also solanine. All information posted on this blog is thoroughly researched, but is provided for reference and entertainment purposes only. Grayish smudges or spots on your eggshell?