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As a food additive, phytic acid is used as the preservative E391. [23] [24] It is allowed as a food additive in the US , the EU, Japan, and China. It offers some antioxidant activity by binding away iron, and is especially effective in meat. It also inhibits polyphenol oxidase, the enzyme responsible for apple browning. Basic research also ...
The pH level of food influences its flavor, texture, and shelf life. [33] Acidic foods, such as citrus fruits, tomatoes, and vinegar, typically have a pH below 4.6 [34] with sharp and tangy taste, while basic foods tastes bitter or soapy. [35] Maintaining the appropriate pH in foods is essential for preventing the growth of harmful ...
Red cabbage extract at low pH (left) to high pH (right) Anthocyanins generally are degraded at higher pH. However, some anthocyanins, such as petanin (petunidin 3-[6-O-(4-O-(E)-p-coumaroyl-O-α-l-rhamnopyranosyl)-β-d-glucopyranoside]-5-O-β-d-glucopyranoside), are resistant to degradation at pH 8 and may be used effectively as a food colorant ...
The highest concentration that gastric acid reaches in the stomach is 160 mM in the canaliculi. This is about 3 million times that of arterial blood, but almost exactly isotonic with other bodily fluids. The lowest pH of the secreted acid is 0.8, [5] but the acid is diluted in the stomach lumen to a pH of between 1 and 3.
The highest levels of ellagic acid are found in raw chestnuts, walnuts, pecans, cranberries, raspberries, strawberries, and grapes, as well as distilled beverages. [12] It is also found in peaches [13] and pomegranates. [14]
The study which was published in Food Chemistry analyzed the pH and chlorogenic acid content of various commercial coffee brands. [6] The pH of the brewed coffees ranged from 4.95 to 5.99 for regular coffee and from 5.14 to 5.80 for decaffeinated coffee, with the brand exhibiting the highest pH also having the lowest total chlorogenic acid ...
Nutrition scientists began to refine this hypothesis in the early 20th century, emphasizing the role of negatively charged particles and positively charged particles in food. Diets high in chloride, phosphate and sulfate (all of which are anions) were presumed to be acid forming, while diets high in potassium, calcium and magnesium (all of ...
It has a characteristic reddish-purple color, though this can change with pH; solutions of the compound are red at pH < 3, violet at pH 7-8, and blue at pH > 11. In certain fruits, the highest concentrations of cyanidin are found in the seeds and skin. [citation needed] Cyanidin has been found to be a potent sirtuin 6 (SIRT6) activator. [2] [3]