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Tannins are mainly physically located in the vacuoles or surface wax of plants. These storage sites keep tannins active against plant predators, but also keep some tannins from affecting plant metabolism while the plant tissue is alive. Tannins are classified as ergastic substances, i.e., non-protoplasm materials found in cells.
Tannic acid is a specific form of tannin, a type of polyphenol. Its weak acidity ( pK a around 6) is due to the numerous phenol groups in the structure. The chemical formula for commercial tannic acid is often given as C 76 H 52 O 46, which corresponds with decagalloyl glucose, but in fact it is a mixture of polygalloyl glucoses or polygalloyl ...
- C₇₆H₅₂O₄₆
- 1701.19 g/mol
- decomposes above 200 °C
- 2850 g/L or 250 g/L
Nattō (納豆) is a traditional Japanese food made from whole soybeans that have been fermented with Bacillus subtilis var. natto.[1] It is often served as a breakfast food with rice.[2] It is served with karashi mustard, soy or tare sauce, and sometimes Japanese bunching onion. Within Japan, nattō is most popular in the eastern regions ...
Phenylalanine (symbol Phe or F) is an essential α-amino acid with the formula C 9 H 11 NO 2.It can be viewed as a benzyl group substituted for the methyl group of alanine, or a phenyl group in place of a terminal hydrogen of alanine. This essential amino acid is classified as neutral, and nonpolar because of the inert and hydrophobic nature of the benzyl side chain.
Beatrice Foods Company was a major American food conglomerate founded in 1894.[1][2] One of the best-known food processing companies in the U.S., Beatrice owned many well-known brands such as Tropicana, Krispy Kreme, Jolly Rancher, Orville Redenbacher's, Swiss Miss, Peter Pan, Avis, Milk Duds, Samsonite, Playtex, La Choy and Dannon.[3][4] In ...
A representation of the 3D structure of the protein myoglobin showing turquoise α-helices. This protein was the first to have its structure solved by X-ray crystallography. Toward the right-center among the coils, a prosthetic group called a heme group (shown in gray) with a bound oxygen molecule (red). Proteins are large biomolecules and ...
Gross domestic product (GDP) is the market value of all final goods and services from a nation in a given year. [2] Countries are sorted by nominal GDP estimates from financial and statistical institutions, which are calculated at market or government official exchange rates. Nominal GDP does not take into account differences in the cost of ...
