Countless cases of food poisoning occur every year, and a delicious meal on the table can accidentally become poison. For example, poisoning from drinking raw soy milk or eating daylilies. Let's take a look at the top six foods that should not be eaten raw.
1. Raw Soy Milk
Because raw soybeans also contain toxic components, consuming soy milk that has not been fully cooked can cause food poisoning. Especially when soy milk is heated to about 80°C, saponin expands due to heat, causing foam to float to the surface, creating a "false boiling" phenomenon. In fact, the toxic components in the soy milk, such as saponin, have not been completely destroyed at this point. Drinking this soy milk will cause poisoning, with symptoms typically appearing 0.5 to 1 hour after consumption, mainly showing gastroenteritis symptoms.
2. Kidney Beans
The reason kidney beans easily cause poisoning is due to two substances they contain: saponin and hemagglutinin. Saponin has a strong irritating effect on the gastric mucosa and can cause digestive tract symptoms such as vomiting and diarrhea. Hemagglutinin can destroy the oxygen-carrying function of red blood cells, causing them to agglutinate and leading to poisoning. Only by heating to 100°C and maintaining that temperature for a period of time can these two substances be destroyed. If processed with a high flame for a short time without sufficient heat, the natural toxins in kidney beans are often not completely destroyed.
Dry-fried Kidney Beans
3. Daylilies
Daylilies, also known as golden needles, are a beloved dish. However, daylilies contain colchicine. After being ingested by the human body, colchicine is oxidized in body tissues to form dicolchicine. Dicolchicine is a highly toxic substance that can poison the human gastrointestinal and urinary systems, posing a serious threat to health. An adult can be poisoned by consuming 50-100 grams of fresh daylilies at once.
4. Fresh Wood Ear Mushrooms
Fresh wood ear mushrooms contain a porphyrin photosensitive substance. It is sensitive to light, and after consumption, exposure to sunlight can cause photodermatitis. In severe cases, it can lead to difficulty in breathing due to throat edema. Soaked wood ear mushrooms can also spoil easily. Once contaminated with bacteria, they can easily produce toxins and are absolutely not to be eaten!
Old Vinegar Cucumber with Wood Ear Mushrooms
5. Cassava
Although the root of the cassava plant is rich in starch, all its parts, including the root, stem, and leaves, contain toxic substances, with the fresh root being particularly toxic. Therefore, special care must be taken when consuming cassava roots. The toxic substance in cassava is linamarin. Consuming raw or undercooked cassava or its soup can cause poisoning. This is because linamarin or linamarase is hydrolyzed by stomach acid to produce free hydrogen cyanide, which poisons the human body.
6. Ginkgo Nuts
Ginkgo nuts contain hydrogen cyanide toxin, which is highly toxic, so eating them raw can easily lead to poisoning. However, the toxicity of ginkgo nuts decreases when heated. Even so, when consuming them in soup or for medicinal purposes, the skin and germ should be removed, as these two parts contain a higher proportion of toxins.
Quail Egg and Ginkgo Sweet Soup
Quail protein sugar
Ice mooncake
Tofu