2. Sweet Potatoes
If sweet potatoes are left for a long time and begin to sprout, not only does the taste deteriorate, but due to the degradation of starch and sugar, the nutritional substances gradually diminish as well.
During the degradation process, harmful substances such as dioscorin and diosgenin may be produced, leading to symptoms such as nausea, vomiting, and diarrhea after consumption. In severe cases, it could even result in unconsciousness or life-threatening situations.
If the skin shows brown or black spots, it indicates contamination by black spot disease, making it toxic and inedible.
Storage Tip: Generally, sweet potatoes should be stored in a ventilated and dry place, where they can be kept for 3-4 weeks. Purchase in small amounts based on storage time.
