The juice of the lemon is about 5% to 6% citric acid, with a pH of around 2.2, giving it a sour taste. The distinctive sour taste of lemon juice makes it a key ingredient in drinks and foods such as lemonade and lemon meringue pie. Limes are small, round, and green, while lemons are usually larger, oval-shaped, and bright yellow. Nutritionally, they’re almost identical and share many of the same potential health benefits. Both fruits are acidic and sour, but lemons tend to be sweeter, while limes have a more bitter flavor. And for lemon juice, we all know lemon contains citric acid, and acid tastes sour. So due to citric acid, lemon juice tastes juice sour Lemons contain many main vitamins and minerals that are important to have to maintain a healthy diet. These vitamins are Vitamin A, Vitamin B6, and Vitamin C. The lemon contains minerals such as iron and potassium. Lemons contain many main vitamins and minerals that are important to have to maintain a healthy diet. These vitamins are Vitamin A, Vitamin B6, and Vitamin C. The lemon contains minerals such as iron and potassium. Lemons contain a high amount of vitamin C, soluble fiber, and plant compounds that give them a number of health benefits. Lemons may aid weight loss and reduce your risk of heart disease, anemia, kidney stones, digestive issues, and cancer. Lemons are shaped like an oval with a bump on one end. Their rind, or skin, is thick. It starts out green and turns yellow when the fruit is ripe. Inside each fruit is juicy flesh called pulp. Acidity, like saltiness, also leads to an increase in salivation — both flavors literally make food more mouthwatering. Since tasting depends on saliva’s power as a solvent, the presence of saliva on your tongue is necessary for your taste buds, and therefore your brain, to perceive flavor. Limes are high in vitamin C and antioxidants.