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Sprouted potatoes can be safe to eat, but it depends on their condition, says Naria Le Mire, MPH, RD. “When potatoes sprout, they produce glycoalkaloids, natural toxins like solanine and ...
Superposition of spectra of chlorophyll a and b with oenin (malvidin 3O glucoside), a typical anthocyanin, showing that, while chlorophylls absorb in the blue and yellow/red parts of the visible spectrum, oenin absorbs mainly in the green part of the spectrum, where chlorophylls don't absorb at all.
If your potatoes are green, chlorophyll isn’t dangerous, but it’s a sign that other toxins have increased, too. These toxins live on the potato’s skin and sprouts; the white flesh of the ...
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'Vitelotte' potatoes have a dark blue, almost black, skin and dark violet-blue flesh; they have a characteristic nutty flavour and smell of chestnuts. The colour is retained in cooking, and is due to natural pigments in the anthocyanin group of flavonoids. [4] The plants mature late and, compared to modern varieties, are relatively low-yielding.
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The potatoes known as "for consumption", i.e. which were harvested with complete maturity, can be preserved several weeks, provided that they are stored in a room that is ventilated, fresh (between 8 and 9 °C) but sheltered from the frost, and obscure because the light makes them green. Early potatoes, harvested before maturity, cannot be stored.
Excessive consumption of elemental silver, silver dust or silver compounds can cause the skin to be colored blue or bluish-grey. This condition is called argyria. A similar skin color can result from prolonged exposure to gold, typically as a little-used medical treatment. The gold-induced greyish skin color is called chrysiasis. Argyria and ...