In the last article of this column, we discussed about the colored leaves on the trees. However, in autumn, these leaves turn brown and fall to the ground. Have you ever wondered why dead leaves turn brown every year? When a fruit, for example, an apple is injured,...
Trees in autumn turn into bright colors, yellow or red, not only because chlorophyll disappears, but also because of tannins. In nature, many compounds of the falling leaves are destroyed and recovered, such as chlorophyll. But leaves also accumulate tannins: taste a...
Have you ever tasted a young wine that left you with a rough, dry mouthfeel? Have you ever experienced this sensation on a persimmon, an underripe fruit, or tasting an edible wild plant? This phenomenon is called astringency. Well, astringency was the moment when you...
Recent Comments