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Lakawood
Lakawood, or laka wood (), is a reddish aromatic heartwood used as incense in China, India and South East Asia. It also had a number of other uses in the past, for example as a dye and for medicinal purposes. The name lakawood can refer to the wood of different plants, such as ''Acronychia pedunculata'', ''A. Laurifolia'', and in particular, '' Dalbergia parviflora'' found in South East Asia. Historically it was one of the most commonly-traded commodities of South East Asia in the trade between China and South East Asia from the Song dynasty onwards, possibly earlier. Names The lakawood of ''Dalbergia parviflora'' is a product of the Malay Peninsula and Archipelago, and its native name in Malay is ''kayu laka'' (literally "laka wood"), from which the words cayolaque and lakawood are derived. In old Javanese literature, the word ''"laka"'' was also used to denote a shade of red on cloth, and the word ''manglaka'' meant "processor of laka-wood dye", although the tree from which the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Incense In China
Incense in China is traditionally used in a wide range of Chinese culture, Chinese cultural activities including Religion in China, religious ceremonies, Ancestor veneration in China, ancestor veneration, traditional medicine, and in daily life. Known as ''xiang'' (), incense was used by the Chinese cultures starting from Neolithic times with it coming to greater prominence starting from the Xia dynasty, Xia, Shang dynasty, Shang, and Zhou dynasty, Zhou dynasties.�，2003 One study shows that during the Han dynasty (206 BC – AD 220) there was increased trade and acquisitions of more fragrant foreign incense materials when local incense materials were considered "poor man's incense". It reached its height during the Song dynasty with its nobility enjoying incense as a popular cultural pastime, to the extent of building rooms specifically for the use of incense ceremonies. Besides meaning "incense", the Chinese (language), Chinese word ''xiang'' () also means "fragrance; scent; a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Granulation Tissue
Granulation tissue is new connective tissue and microscopic blood vessels that form on the surfaces of a wound during the healing process. Granulation tissue typically grows from the base of a wound and is able to fill wounds of almost any size. Examples of granulation tissue can be seen in pyogenic granulomas and pulp polyps. Its histological appearance is characterized by proliferation of fibroblasts and thin-walled, delicate capillaries (angiogenesis), and infiltrated inflammatory cells in a loose extracellular matrix. Appearance During the migratory phase of wound healing, granulation tissue is: * light red or dark pink, being perfused with new capillary loops or "buds"; * soft to the touch; * moist; * bumpy (granular) in appearance, due to punctate hemorrhages; * pulsatile on palpation; * painless when healthy; Structure Granulation tissue is composed of tissue matrix supporting a variety of cell types, most of which can be associated with one of the following function ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Singapore
Singapore, officially the Republic of Singapore, is an island country and city-state in Southeast Asia. The country's territory comprises one main island, 63 satellite islands and islets, and one outlying islet. It is about one degree of latitude () north of the equator, off the southern tip of the Malay Peninsula, bordering the Strait of Malacca to the west, the Singapore Strait to the south along with the Riau Islands in Indonesia, the South China Sea to the east, and the Straits of Johor along with the State of Johor in Malaysia to the north. In its early history, Singapore was a maritime emporium known as '' Temasek''; subsequently, it was part of a major constituent part of several successive thalassocratic empires. Its contemporary era began in 1819, when Stamford Raffles established Singapore as an entrepôt trading post of the British Empire. In 1867, Singapore came under the direct control of Britain as part of the Straits Settlements. During World ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daoyi Zhilüe
''Daoyi Zhilüe'' ( zh, t=島夷誌略, s=岛夷志略, p=Dǎo Yí Zhì Lüè, w=Tao i chih lio) or ''Daoyi Zhi'' ( zh, t=島夷誌, s=岛夷志, p=Dǎo Yí Zhì, w=Tao i chih) which may be translated as ''A Brief Account of Island Barbarians'' or other similar titles, is a book written c. 1339 (completed c. 1349) by Yuan dynasty Chinese traveller Wang Dayuan recounting his travels to over a hundred places in South Asia, Southeast Asia, and Africa. The book was written in present-day Sri Lanka Sri Lanka, officially the Democratic Socialist Republic of Sri Lanka, also known historically as Ceylon, is an island country in South Asia. It lies in the Indian Ocean, southwest of the Bay of Bengal, separated from the Indian subcontinent, .... It described the weather, products, people, and customs of the places that Wang Dayuan visited. The timeline for Wang Dayuan's life and travels is: *1311 - born *1330 - sailed for the first time from Quanzhou *1334 - returned to Yuan dy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nanfang Caomu Zhuang
The (c. 304 CE) ''Nanfang caomu zhuang'' (南方草木狀 ''Plants of the Southern Regions''), attributed to the Jin dynasty (265-420), Western Jin dynasty scholar and botanist Ji Han (嵇含, 263-307), is a Flora (publication), Flora describing the plants of Nanyue and Jiaozhi, present-day South China and northern Vietnam. The ''Nanfang caomu zhuang'' is the oldest work extant in any language on subtropical botany. The book contains the first descriptions of several economic plants, for instance jasmine and black pepper, as well as the earliest accounts of some agricultural techniques such as biological pest control (using Oecophylla smaragdina, "citrus ants" to protect orange (fruit), orange crops), and the cultivation of vegetables on floating gardens (centuries before the earliest recorded Mesoamerican ''chinampa''). Since 1273, when the ''Nanfang caomu zhuang'' was first printed in the Song dynasty, it was frequently quoted by Chinese authors, both in literature and techn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neoflavonoids
Neoflavonoids are a class of polyphenolic compounds. While flavonoids (in the narrow sense) have the 2-phenylchromen-4-one backbone, neoflavonoids have the 4-phenylchromen backbone with no hydroxyl group substitution at position 2. Types Neoflavonoids include 4-arylcoumarins (neoflavones), 4-arylchromanes, dalbergiones and dalbergiquinols. * Neoflavones are derived from the 4-phenylcoumarin (or 4-aryl-coumarin) backbone (C15H12O2). The first neoflavone isolated from natural sources was calophyllolide from ''Calophyllum inophyllum'' seeds (1951). It is also found in the bark and timber of the plant '' Mesua thwaitesii'', endemic to Sri Lanka. * Neoflavenes possess the 4-phenylchromen backbone (C15H10O2). Dalbergichromene, extracted from the stem-bark and heartwood of ''Dalbergia sissoo'', is an example of such compounds Other examples * Coutareagenin (5-hydroxy-7-methoxy-4-(3,4-dihydroxyphenyl)-2H-benzo-1-pyran-2-on) found in ''Hintonia latiflora ''Hintonia latiflora'' is a pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benzofurans
Benzofuran is the heterocyclic compound consisting of fused benzene and furan rings. This colourless liquid is a component of coal tar. Benzofuran is the structural nucleus (parent compound) of many related compounds with more complex structures. For example, psoralen is a benzofuran derivative that occurs in several plants. Production Benzofuran is extracted from coal tar. It is also obtained by dehydrogenation of 2-ethylphenol. Laboratory methods Benzofurans can be prepared by various methods in the laboratory. Notable examples include: *''O''-alkylation of salicylaldehyde with chloroacetic acid followed by dehydration reaction, dehydration (cyclication) of the resulting ether and decarboxylation. *Perkin rearrangement, where a coumarin is reacted with a hydroxide: : *Diels–Alder reaction of Nitroalkene, nitro vinyl furans with various dienophiles: : *Isomerization, Cycloisomerization of alkyne Arene substitution pattern, ortho-substituted phenols: : Related compounds ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Furfurol
Furfural is an organic compound with the formula C4H3OCHO. It is a colorless liquid, although commercial samples are often brown. It has an aldehyde group attached to the 2-position of furan. It is a product of the dehydration of sugars, as occurs in a variety of agricultural byproducts, including corncobs, oat, wheat bran, and sawdust. The name ''furfural'' comes from the Latin word , meaning bran, referring to its usual source. Furfural is derived only from dried biomass. In addition to ethanol, acetic acid, and sugar, furfural is one of the oldest known organic chemicals available readily purified from natural precursors. History Furfural was first isolated in 1821 (published in 1832) by the German chemist Johann Wolfgang Döbereiner, who produced a small sample as a byproduct of formic acid synthesis. In 1840, the Scottish chemist John Stenhouse found that the same chemical could be produced by distilling a wide variety of crop materials, including corn, oats, bran, and sawdu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Farnesol
Farnesol is a natural 15-carbon organic compound which is an acyclic sesquiterpene alcohol. Under standard conditions, it is a colorless liquid. It is hydrophobic, and thus insoluble in water, but miscible with oils. As the pyrophosphate ester, farnesol is a precursor to many terpenes and terpenoids. Uses Farnesol is present in many essential oils such as citronella oil, citronella, neroli, cyclamen, lemon grass, tuberose, rose, musk, balsam, and Tolu balsam, tolu. It is used in perfumery to emphasize the odors of sweet, floral perfumes. It enhances perfume scent by acting as a co-solvent that regulates the volatility of the odorants. It is especially used in lilac and peony perfumes. Farnesol and its ester derivatives are important organic synthesis, precursors for a variety of other compounds used as fragrances and vitamins. Cosmetics Farnesol is used as a deodorant in cosmetic products. Farnesol is subject to restrictions on its use in perfumery, because some people may beco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nerolidol
Nerolidol, also known as peruviol and penetrol , is a naturally occurring sesquiterpene alcohol. A colorless liquid, it is found in the essential oils of many types of plants and flowers. There are four isomers of nerolidol', which differ in the geometry about the central double bond and configuration of the hydroxyl-bearing carbon, but most applications use such a mixture. The aroma of nerolidol is woody and reminiscent of fresh bark. It is used as a flavoring agent and in perfumery as well as in non-cosmetic products such as detergents and cleansers. Nerolidyl derivatives include nerolidyl diphosphate and the fragrance nerolidyl acetate. Synthesis and occurrence Nerolidol is produced commercially from geranylacetone, e.g., by the addition of vinyl Grignard reagent. It is used as a source of farnesol, vitamin E, and vitamin K1. Significant sources of natural nerolidol is Cabreuva oil and the oil of ''Dalbergia parviflora''. It is also present in neroli, ginger, jasmine, lave ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dracaena Cinnabari
''Dracaena cinnabari'', the Socotra dragon tree or dragon blood tree, is a dragon tree native to the Socotra archipelago, part of Yemen, located in the Arabian Sea. It is named after the blood-like color of the red sap that the trees produce. It is considered the national tree of Yemen. A related tree of similar appearance, the drago, ''Dracaena draco'', grows in the Canary Islands, more than 7000 km from Socotra. Description The dragon blood tree has an upturned, densely packed crown. This evergreen species is named after its dark red resin, which is known as "dragon's blood". Unlike most monocot plants, ''Dracaena'' displays secondary growth, ''D. cinnabari'' even has growth zones resembling tree rings found in dicot tree species. Along with other arborescent ''Dracaena'' species it has a distinctive growth habit called "dracoid ". Its leaves are found only at the end of its youngest branches; its leaves are all shed every three or four years as new leaves simultan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
