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Aquilegia Oxysepala
''Aquilegia oxysepala'' is a perennial flowering plant species in the genus ''Aquilegia'' (columbine) in the family Ranunculaceae. It is native to East Asia, with a range extending from southeastern Siberia to Japan. It produces purple and yellow flowers that bloom for three weeks in May. The plant has been used medicinally in China for thousands of years, while modern scientific research has determined that its extract has limited antioxidant qualities. Description ''Aquilegia oxysepala'' is a species of herbaceous, perennial flowering plant in the family Ranunculaceae (buttercups). ''A. oxysepala'' plants flower in May with blooms that last three weeks. Columbines possess flowers that generally have five sepals and five petals. Each petal of ''Aquilegia'' typically comprises a broad portion protruding forward, known as a ''blade'', and an elongated structure protruding backwards, known as a ''nectar spur''. The spurs contain the nectar of the flower. On ''A. oxysepala ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trautvetter
Ernst Rudolf von Trautvetter (20 February 1809, in Jelgava – 24 January 1889, in St. Petersburg), was a Baltic Germans, Baltic German Botany, botanist, specialising in the flora of the Caucasus and central Asia. He was the son of Ernst Christian Johann von Trautvetter (1780-1859), Professor of Philosophy.Geni (genealogy) He studied medicine and natural sciences at the University of Tartu, University of Dorpat. From 1829 to 1831, he conducted botanical field trips throughout Livonia, returning to Jelgava in 1831 as a private instructor.JSTOR Global Plants (biography) In 1833, he began work as an assistant at the University of Tartu Botanical Gardens, botanical garden in Dor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aquilegia Viridiflora
''Aquilegia viridiflora'', commonly known as the green columbine or green-flowered columbine, is a perennial flowering plant in the family Ranunculaceae, native to southern Siberia, northern China, Mongolia, and Japan. Description ''Aquilegia viridiflora'' is a herbaceous perennial growing to tall, with hairy or glandular stems which often branch towards the top. It has few basal leaves, which are biternate and mostly smooth with stalks of up to . It produces 3–7 nodding flowers measuring across which are either yellowish-green (in the variety ''viridiflora'') or dark purple (''atropurpurea''). The sepals and petals measure or less and the petals have straight or slightly incurved nectar spurs of length. Taxonomy There are two named varieties, distinguished by the colour of the flowers: * ''A. viridiflora'' var. ''atropurpurea'' (Willd.) Finet & Gagnep. which is native to Mongolia, Siberia, and Hebei, southern Liaoning, Nei Mongol, eastern Qinghai, southern Shandong, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ernst Rudolf Von Trautvetter
Ernst Rudolf von Trautvetter (20 February 1809, in Jelgava – 24 January 1889, in St. Petersburg), was a Baltic German botanist, specialising in the flora of the Caucasus and central Asia. He was the son of Ernst Christian Johann von Trautvetter (1780-1859), Professor of Philosophy.Geni (genealogy) He studied medicine and s at the . From 1829 to 1831, he conducted botanical field trips throughout , returni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Binomial Nomenclature
In taxonomy, binomial nomenclature ("two-term naming system"), also called binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms, although they can be based on words from other languages. Such a name is called a binomial name (often shortened to just "binomial"), a binomen, name, or a scientific name; more informally, it is also called a Latin name. In the International Code of Zoological Nomenclature (ICZN), the system is also called nomenclature, with an "n" before the "al" in "binominal", which is a typographic error, meaning "two-name naming system". The first part of the name – the '' generic name'' – identifies the genus to which the species belongs, whereas the second part – the specific name or specific epithet – distinguishes the species within the genus. For example, modern humans belong to the genus ''Homo'' and within this genus to the species ''Hom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species Description
A species description is a formal scientific description of a newly encountered species, typically articulated through a scientific publication. Its purpose is to provide a clear description of a new species of organism and explain how it differs from species that have been previously described or related species. For a species to be considered valid, a species description must follow established guidelines and naming conventions dictated by relevant nomenclature codes. These include the International Code of Zoological Nomenclature (ICZN) for animals, the International Code of Nomenclature for algae, fungi, and plants (ICN) for plants, and the International Committee on Taxonomy of Viruses (ICTV) for viruses. A species description often includes photographs or other illustrations of type material and information regarding where this material is deposited. The publication in which the species is described gives the new species a formal scientific name. Some 1.9 million ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Journal Of Food Biochemistry
The ''Journal of Food Biochemistry'' is a peer-reviewed scientific journal that covers research on the effects of handling, storage, and processing on the biochemical aspects of food. It was established in 1977 and is published by Wiley-Blackwell Wiley-Blackwell is an international scientific, technical, medical, and scholarly publishing business of John Wiley & Sons. It was formed by the merger of John Wiley & Sons Global Scientific, Technical, and Medical business with Blackwell Publish .... The journal moved to online-only publication in 2011. References External links * {{Official, http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1745-4514 Bimonthly journals Wiley-Blackwell academic journals English-language journals Academic journals established in 1977 Food science journals ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ascorbic Acid
Ascorbic acid is an organic compound with formula , originally called hexuronic acid. It is a white solid, but impure samples can appear yellowish. It dissolves freely in water to give mildly acidic solutions. It is a mild reducing agent. Ascorbic acid exists as two enantiomers (mirror-image isomers), commonly denoted "" (for "levo") and "" (for "dextro"). The isomer is the one most often encountered: it occurs naturally in many foods, and is one form (" vitamer") of vitamin C, an essential nutrient for humans and many animals. Deficiency of vitamin C causes scurvy, formerly a major disease of sailors in long sea voyages. It is used as a food additive and a dietary supplement for its antioxidant properties. The "" form ( erythorbic acid) can be made by chemical synthesis, but has no significant biological role. Etymology The term ''ascorbic'' means antiscruvy and denotes the ability to fight off scurvy. It is related to combating Vitamin C deficiency. History The antiscor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrogen Peroxide
Hydrogen peroxide is a chemical compound with the formula . In its pure form, it is a very pale blue liquid that is slightly more viscosity, viscous than Properties of water, water. It is used as an oxidizer, bleaching agent, and antiseptic, usually as a dilute solution (3%–6% by weight) in water for consumer use and in higher concentrations for industrial use. Concentrated hydrogen peroxide, or "high-test peroxide", decomposes explosively when heated and has been used as both a monopropellant and an oxidizer in rocketry. Hydrogen peroxide is a reactive oxygen species and the simplest peroxide, a compound having an oxygen–oxygen single bond. It decomposes slowly into water and elemental oxygen when exposed to light, and rapidly in the presence of organic or reactive compounds. It is typically stored with a Stabilizer (chemistry), stabilizer in a weakly acidic solution in an opaque bottle. Hydrogen peroxide is found in biological systems including the human body. Enzymes that u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydroxyl Radical
The hydroxyl radical, •HO, is the neutral form of the hydroxide ion (HO–). Hydroxyl radicals are highly reactive and consequently short-lived; however, they form an important part of radical chemistry. Most notably hydroxyl radicals are produced from the decomposition of hydroperoxides (ROOH) or, in atmospheric chemistry, by the reaction of excited atomic oxygen with water. It is also an important radical formed in radiation chemistry, since it leads to the formation of hydrogen peroxide and oxygen, which can accelerate corrosion and stress corrosion cracking in coolant systems subjected to radioactive environments. Hydroxyl radicals are also produced during UV-light dissociation of hydrogen peroxide (H2O2) (suggested in 1879) and likely in Fenton chemistry, where trace amounts of reduced transition metals catalyze peroxide-mediated oxidations of organic compounds. In organic synthesis, hydroxyl radicals are most commonly generated by photolysis of '' 1-Hydroxy-2(1H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Superoxide Anion
In chemistry, a superoxide is a compound that contains the superoxide ion, which has the chemical formula . The systematic name of the anion is dioxide(1−). The reactive oxygen ion superoxide is particularly important as the product of the one-electron reduction of dioxygen , which occurs widely in nature. Molecular oxygen (dioxygen) is a diradical containing two unpaired electrons, and superoxide results from the addition of an electron which fills one of the two degenerate molecular orbitals, leaving a charged ionic species with a single unpaired electron and a net negative charge of −1. Both dioxygen and the superoxide anion are free radicals that exhibit paramagnetism. Superoxide was historically also known as "hyperoxide". Salts Superoxide forms salts with alkali metals and alkaline earth metals. The salts sodium superoxide (), potassium superoxide (), rubidium superoxide () and caesium superoxide () are prepared by the reaction of with the respective alkali me ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DPPH
DPPH is a common abbreviation for the organic chemical compound 2,2-diphenyl-1-picrylhydrazyl. It is a dark-colored crystalline powder composed of stable Radical (chemistry), free radical molecules. DPPH has two major applications, both in laboratory research: one is a monitor of chemical reactions involving radicals, most notably it is a common antioxidant assay, and another is a standard of the position and intensity of electron paramagnetic resonance signals. Properties and applications DPPH has several crystalline forms which differ by the lattice symmetry and melting point. The commercial powder is a mixture of phases which melts at ~130 °C. DPPH-I (m.p. 106 °C) is Orthorhombic crystal system, orthorhombic, DPPH-II (m.p. 137 °C) is amorphous and DPPH-III (m.p. 128–129 °C) is Triclinic crystal system, triclinic. DPPH is a well-known radical and a trap ("scavenger") for other radicals. Therefore, rate reduction of a chemical reaction u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scavenger (chemistry)
A scavenger in chemistry is a chemical substance added to a mixture in order to remove or de-activate impurities and unwanted reaction products, for example oxygen, to make sure that they will not cause any unfavorable reactions. Their use is wide-ranged: * In atmospheric chemistry, the most common scavenger is the hydroxyl radical The hydroxyl radical, •HO, is the neutral form of the hydroxide ion (HO–). Hydroxyl radicals are highly reactive and consequently short-lived; however, they form an important part of radical chemistry. Most notably hydroxyl radicals are pr ..., a short-lived radical (chemistry), radical produced photolysis, photolytically in the atmosphere. It is the most important oxidant for carbon monoxide, methane and other hydrocarbons, sulfur dioxide, hydrogen sulfide, and most of other contaminants, removing them from the atmosphere. * In molecular laser isotope separation, methane is used as a scavenger gas for fluorine atoms. * Hydrazine and ascorbic ac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
