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Lemon juice tastes sour because it contains 5% to 6% citric acid and has a pH of 2.2 (high acidity). Plants contain pH-dependent pigments that can be used as pH indicators , such as those found in hibiscus , red cabbage ( anthocyanin ), and grapes ( red wine ).
Citric acid sold in a dry powdered form is commonly sold in markets and groceries as "sour salt", due to its physical resemblance to table salt. It has use in culinary applications, as an alternative to vinegar or lemon juice, where a pure acid is needed. Citric acid can be used in food coloring to balance the pH level of a normally basic dye.
Here’s a quick science lesson: Every food and drink has a pH level, from 0 (very acidic) to 14 (very basic, or alkaline). Normal drinking water, for its part, usually has a pH of 7. Alkaline ...
Alkaline ash is produced by fruits and vegetables, except cranberries, prunes and plums. Since the acid or alkaline ash designation is based on the residue left on combustion rather than the acidity of the food, foods, such as citrus fruits, that are generally considered acidic are actually considered alkaline producing in this diet. [11]
The “alkaline” in bottled alkaline water refers to its pH level. For a little chemistry class refresher, the abbreviation “pH” stands for potential hydrogen, which refers to how acidic or ...
Essentials Week spotlights unexpected items that make our daily lives just a little bit better. Diluted, freshly-squeezed lemon juice has acquired something of a reputation in our diet-obsessed ...
The adjective alkaline, and less often, alkalescent, is commonly used in English as a synonym for basic, especially for bases soluble in water. This broad use of the term is likely to have come about because alkalis were the first bases known to obey the Arrhenius definition of a base, and they are still among the most common bases.
Paper form: It is a strip of coloured paper which changes colour to red if the solution is acidic and to blue, if the solution is basic. The strip can be placed directly onto a surface of a wet substance or a few drops of the solution can be dropped onto the universal indicator using dropping equipment.