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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.
A. niger is also being considered as a potential new source of natural food grade pigments. [26] The production of citric acid (CA) is achieved by growing strains of A. niger in a nutrient rich medium that includes high concentrations of sugar and mineral salts and an acidic pH of 2.5-3.5. [27]
Lemon juice and rind are used in a wide variety of foods and drinks, the juice for its sour taste, from its content of 5–6% citric acid. [28] The whole lemon is used to make marmalade, [29] lemon curd [30] and lemon liqueurs such as Limoncello. [31] Lemon slices and lemon rind are used as a garnish for food and drinks.
Hydroxycitric acid as such cannot be isolated from garcinia fruits or hibiscus sabdariffa fruits. It exists in both the open and lactone forms. The presence of two chiral centres in the molecule is exploited to construct molecular skeletons that are otherwise difficult to synthesize, thus demonstrating the lactones use as chirons. [3]
It is also used as an anticoagulant for laboratory testing, in that blood samples are collected into sodium citrate-containing tubes for tests such as the PT (INR), APTT, and fibrinogen levels. Sodium citrate is used in medical contexts as an alkalinizing agent in place of sodium bicarbonate, [2] to neutralize excess acid in the blood and urine ...
Other ingredients include carbonated water, natural flavors, tartaric acid and citric acid, plus caffeine, depending on the flavor. Zevia is also the only calorie-free option on this list.
Gatorade contains glucose, which is a source of sugar, making it potentially a poor choice for those who are managing acid reflux. “Just like high-fat foods, chocolate, mint, and spicy foods are ...
Biological systems create many more complex organic acids such as L-lactic, citric, and D-glucuronic acids that contain hydroxyl or carboxyl groups. Human blood and urine contain these plus organic acid degradation products of amino acids, neurotransmitters, and intestinal bacterial action on food