Lemon is a small plant species, citrus (Citrus), when ripe is green or yellow, flesh fruit is sour. Lemons are used as food all over the world – mainly with its juice, but the rice (lime citrus) and zest are also used, mainly in cooking and baking. . Lemon juice contains about 5% (about 0.3 mol / L) citric acid, which helps the lemon taste good, and the pH of the lemon is 2-3. This makes lime juice inexpensive, which can be used instead of acid for scientific experiments in education. Because of its sour taste, many drinks and flavored candies have appeared, including lemonade.
Lemon fruits can be highly acidic (although non-acid varieties are also cultivated), and are high in citric acid and vitamin C. Their tart flavor is popular in beverages (lemonades and iced teas as well as many cocktails), ice creams and desserts, salad dressings, and many meat and vegetable dishes. Lemons have antioxidant properties, so lemon juice is often added to fresh fruit to prevent oxidation and browning. Lemon peel or zest (the outer peel) is used as a flavoring or candied. Lemon oil, obtained from the peel, is used as a wood cleaner and polish, and as a non-toxic pesticide. Traditional medicinal uses for the fruit, peels, oil, and oil obtained from the seeds include treating fever and colic, and as an astringent and diuretic.