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Mearnsetin
Mearnsetin is an ''O''-methylated flavonol. It can be found in '' Eucalyptus globulus'' and in '' Elaeocarpus lanceofolius''. The compound has antioxidative properties. Mearnsetin 3,7-dirhamnoside can be found in the fern ''Asplenium antiquum ''Asplenium antiquum'' is a fern of the group known as bird's-nest ferns. In Japanese it is known by ''ō-tani-watari '' and ''tani-watari''. Description ''Asplenium antiquum'' is an evergreen fern, 2–3 ft. (60–90 cm). It has b ...''. References O-methylated flavonols Resorcinols {{phenol-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eucalyptus Globulus
''Eucalyptus globulus'', commonly known as southern blue gum or blue gum, is a species of tall, evergreen tree endemic to southeastern Australia. This ''Eucalyptus'' species has mostly smooth bark, juvenile leaves that are whitish and waxy on the lower surface, glossy green, lance-shaped adult leaves, glaucous, ribbed flower buds arranged singly or in groups of three or seven in leaf axils, white flowers and woody fruit. There are four subspecies, each with a different distribution across Australia, occurring in New South Wales, Victoria and Tasmania. The subspecies are the Victorian blue gum, Tasmanian blue gum, Maiden's gum, and Victorian eurabbie. Description ''Eucalyptus globulus'' is a tree that typically grows to a height of but may sometimes only be a stunted shrub, or alternatively under ideal conditions can grow as tall as , and forms a lignotuber. The bark is usually smooth, white to cream-coloured but there are sometimes slabs of persistent, unshed bark at the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mearnsetin 3,7-dirhamnoside
Mearnsetin is an ''O''-methylated flavonol. It can be found in '' Eucalyptus globulus'' and in '' Elaeocarpus lanceofolius''. The compound has antioxidative properties. Mearnsetin 3,7-dirhamnoside can be found in the fern ''Asplenium antiquum ''Asplenium antiquum'' is a fern of the group known as bird's-nest ferns. In Japanese it is known by ''ō-tani-watari '' and ''tani-watari''. Description ''Asplenium antiquum'' is an evergreen fern, 2–3 ft. (60–90 cm). It has b ...''. References O-methylated flavonols Resorcinols {{phenol-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asplenium Antiquum
''Asplenium antiquum'' is a fern of the group known as bird's-nest ferns. In Japanese it is known by ''ō-tani-watari '' and ''tani-watari''. Description ''Asplenium antiquum'' is an evergreen fern, 2–3 ft. (60–90 cm). It has bright green, arching blades with a pointed end and a strong midrib. ''Asplenium antiquum'' can readily be distinguished from the closely related ''Asplenium nidus'' by its fronds of uniform width. Chemical composition Mearnsetin 3,7-dirhamnoside, a glycoside of the flavonol mearnsetin, can be found in ''A. antiquum''.Mearnsetin 3,7-dirhamnoside from Asplenium antiquum. Mizuo Mizuno, Yosuke Kyotani, Munekazu Iinuma, Toshiyuki Tanaka, Hiroyuki Kojima and Kunio Iwatsuki, Phytochemistry, Volume 30, Issue 8, 1991, pages 2817-2818, Taxonomy A global phylogeny of ''Asplenium'' published in 2020 divided the genus into eleven clades, which were given informal names pending further taxonomic study. ''A. antiquum'' belongs to the "''Neotto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
O-methylated Flavonol
The O-methylated flavonoids or methoxyflavonoids are flavonoids with methylations on hydroxyl groups (methoxy bonds). O-methylation has an effect on the solubility of flavonoids. Enzymes O-methylated flavonoids formation implies the presence of specific O-methyltransferase (OMT) enzymes which accept a variety of substrates. Those enzymes mediate the O-methylation on a specific hydroxyl group, like on 4' (example in ''Catharanthus roseus'') or 3' (example in rice) positions. Those positions can be Arene substitution patterns, ortho, meta, para and there can be a special 3-O-methyltransferase for the 3-OH position. Calamondin orange (''Citrus mitis'') exhibits all of those activities. Plant enzymes * Apigenin 4'-O-methyltransferase * 8-hydroxyquercetin 8-O-methyltransferase * Isoflavone 4'-O-methyltransferase * Isoflavone 7-O-methyltransferase * Isoliquiritigenin 2'-O-methyltransferase * Isoorientin 3'-O-methyltransferase * Kaempferol 4'-O-methyltransferase * Luteolin O-methyltransfer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elaeocarpus Lanceofolius
''Elaeocarpus lanceifolius'' is a tree species in the family ''Elaeocarpaceae''. It is found across tropical Asia from Thailand to Yunnan to Nepal to Karnataka, India. It is used for its wood (construction, firewood, charcoal), fruit (food and medicine), and nuts (jewellery, rosaries). Description A tall evergreen tree up to 20m tall with gray-black bark and a dense crown. Some of its distinctive features are: glabrous branchlets; cuneate, more-or-less decurrent leaf bases; and leaves possessing 7 or 8 lateral veins per side with veinlets sparse. Flowers bisexual, white, with a 3-4 x 2-2.5 cm ovoid green drupe that has an inconspicuous exocarp and a bony, conspiculously verrucose endocarp, 1-loculed. The seeds are around 2 cm. It flowers from June to July and fruits from July to September in China. April to June is the flowering season in India, with fruit appearing July to September. Distribution The plant is found in: Thailand; Cambodia; Vietnam; China (northwest Yu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antioxidant
Antioxidants are compounds that inhibit oxidation, a chemical reaction that can produce free radicals. This can lead to polymerization and other chain reactions. They are frequently added to industrial products, such as fuels and lubricants, to prevent oxidation, and to foods to prevent spoilage, in particular the rancidification of oils and fats. In cells, antioxidants such as glutathione, mycothiol or bacillithiol, and enzyme systems like superoxide dismutase, can prevent damage from oxidative stress. The only dietary antioxidants are vitamins A, C, and E, but the term ''antioxidant'' has also been applied to numerous other dietary compounds that only have antioxidant properties in vitro, with little evidence for antioxidant properties in vivo. Dietary supplements marketed as antioxidants have not been shown to maintain health or prevent disease in humans. History As part of their adaptation from marine life, terrestrial plants began producing non-marine anti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
