Unripe tomatoes are not edible. Green tomatoes contain alkaloid glycosides (lobelia alkaloids) in the form of needle-like crystals, which are very stable to alkaline, but can be hydrolyzed by acid.

So, unripe green tomatoes often feel uncomfortable to eat, mildly bitter mouth, serious cases of poisoning. Especially when the green tomatoes begin to rot, its lobelia alkaloids will be destroyed. After the green tomatoes become red, it does not contain anemone alkaloids.

Expanded Information:

p>1. Color. Ripe tomatoes are bright red in color, and tomatoes ripened in hot weather may also be orange. Of course different varieties of tomatoes ripen in different colors.

Common colors of tomatoes are red, orange, yellow, pink and purple. Before you pick, find out what color the tomatoes you are buying ripen in.

2. Soft and hard. Put a tomato in your hand and gently press it, a good tomato should feel firm! And too ripe or faulty tomatoes are floppy inside! Too soft to pick!

3, size. Generally ripe good quality tomatoes should be larger, plump and heavier in weight! So choose the big ones over the small ones properly!

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