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Originally Posted by Marilize  You might want to switch to something less dangerous. Raw potatoes contain poisonous alkaloids (Solanum) that can poison dogs and people. Cooked or boiled potatoes don't contain Solanum, but meat is more biologically available to dogs, so you might want to try some meaty treats, like jerky. You can even make your own. |
You are correct abut the poisonous alkaloids, but cooking doesn't destroy them. It's only on the above ground part of the plant, unless a potato has been injured or exposed to sunlight etc.
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The potato plant produces a number of defensive (toxic) substances in the upper plant (leaves, stems and above-ground fruit), but they are not in the below-ground tubers, which are the “potatoes” we're familiar with. However, a potato (tuber) that's been injured, exposed to sunlight or stored for an extended period of time might begin to sprout or develop patches of green. The green is chlorophyll, produced by photosynthesis.
Chlorophyll is not toxic, but if photosynthesis has begun, it means that toxic alkaloids, such as solanine, will be also present. Green potatoes and especially potato sprouts, should never be eaten. Cooking does not deactivate these toxins. The pros and cons of munching on raw potatoes | UTSanDiego.com |