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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 is 55% water, 13% carbohydrates, 19% protein, and 11% fat (table). In a 50 grams (1.8 ounces) serving, nattō supplies 110 calories and is a rich source (20% or more of the Daily Value, DV) of several dietary minerals, especially iron (33% DV) and manganese (73% DV), and vitamin K (542% DV). Nattō contains some B vitamins and vitamin C ...
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.
Platypus anatinusShaw, 1799. The platypus ( Ornithorhynchus anatinus ), [3] sometimes referred to as the duck-billed platypus, [4] is a semiaquatic, egg-laying mammal endemic to eastern Australia, including Tasmania. The platypus is the sole living representative or monotypic taxon of its family Ornithorhynchidae and genus Ornithorhynchus ...
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 ...
Fushimi Inari-taisha (Japanese: 伏見稲荷大社) is the head shrine of the kami Inari, located in Fushimi-ku, Kyoto, Kyoto Prefecture, Japan. The shrine sits at the base of a mountain, also named Inari, which is 233 metres (764 ft) above sea level, and includes trails up the mountain to many smaller shrines which span 4 kilometres (2.5 mi ...
