Application of magnetic stirrer for influencing extraction. Development and evaluation of herbal fast dissolving tablets of tectona grandis linn amrita a. Department of biotechnology, university of kerala, karyavattom, kerala, india abstract the timber value of tectona grandis has been well known from decades. Antihyperglycemic activity of tectona grandis linn. Antibacterial activity of ethanolic extract and compounds from fruits of tectona grandis verbenaceae. The formation of caoutchouc in teak sapwood and heartwood was examined in an increment borer core using light microscopy after staining with osmium tetroxide. Antibacterial, cytotoxic and antioxidant potential of. Genes free fulltext analysis of nac domain transcription.
Characterization of tectona grandis extractives by gcms. Files are available under licenses specified on their description page. International journal of pharmaceutical and medicinal research 20. Characterization and isolation of quinones from tectona grandis linn. Dendrometric evaluation of a clonal population of tectona. If the inline pdf is not rendering correctly, you can download the pdf file here. Over the past six years we have been studying extracts from tropical, specially amazon, plants, to search for new sensitizers for photodynamic therapy. The unsaponifiable fraction was the major part and exhibited strong activity. Some examples include physcion, emodin, and fallacinol 21, 22, 14. Traditionally, this species is globally used to relieve fever, diabetes, lipid. The extent of damage caused by it within a given period was investigated by invitro decay test. However, dearth of empirical means of expressing the dimensions, structure, quality and quantity of a removed tree has imped conviction of. Preliminary pruning programme for tectona grandis plantations in costa rica. Media in category tectona grandisthe following 143 files are in this category, out of 143 total.
Tectona grandis is an economically important species which is the source of most commercial teak wood. Studies reveal that the entire parts of the teak plant are useful for both culinary, medicinal and construction purposes. Pdf teak tectona grandis is one of the most valuable timber yielding species in the world, with predominant distribution in tropical or subtropical. Medicinally it has various pharmacological activities. Dendrometric evaluation of a clonal population of tectona grandis in forestlivestock system. Tectona grandis, antioxidant, free radical, nitric oxide correspondence to author. We have shown that both free and nanostructured presentations possess the ability to sensitize b16 f10 cells to red light of the led in vitro. The plant list includes a further 5 scientific plant names of infraspecific rank for the genus tectona. Tectona grandis is commonly known as teak belongs to verbenaceae family.
Tectona grandis leaf extract, free and associated with nanoemulsions, as a possible photosensitizer of mouse melanoma b16 cell. An improved protocol for micropropagation of teak tree. The present study was carried out to evaluate the antihyperglycemic effect of t. Simple protocol for the micropropagation of teak tectona.
The distribution of the polyisoprenoid in untreated and extracted heartwood, its influence on surface chemistry, contact angle with water and formation of radicals before and after irradiation with sunlight, and also on decay. The tropical forests in developing countries are faced with the problem of illegal exploitation of trees. To date there is virtually no information available concerning the fungi associated with tectona grandis teak lamiaceae in thailand. Microfungi on tectona grandis teak in northern thailand. It has small, fragrant white flowers arranged in dense clusters at the end of the branches. Phytochemical analysis of leaves of tectona grandis linn article pdf available in international journal of pharma and bio sciences 51. It is commonly found in india and other south asian countries. Teak is a major exotic species found in tropical region.
Phytochemical antioxidant free radical scavenging abstract. Tectona grandis wikispecies, free species directory. Outdoor lounges, garden tables, garden chairs, steamers and sun loungers, parasols and tents. Currently, tectona grandis is one of the most valuable trees in the world and no transcript dataset related to secondary xylem is available. We would like to show you a description here but the site wont allow us. Today, tectona grandis can be found across the countries of india, sri lanka, indonesia, malaysia, thailand, myanmar and bangladesh, with the largest forests and commercial exploitation happening in indonesia where this tree is grown on large plantations controlled by the stateowned foresting enterprise perum perhutani.
Tectona article about tectona by the free dictionary. Dec 03, 2014 antioxidant and antiinflammatory activity tectona grandis slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The height of the tree at the moment of first flowering is important in silviculture. It is the most important species of the genus tectona and has been naturalized in africa. It has small, fragrant white flowers and large papery leaves that are often hairy on the lower surface. In cameroon, this species is a reputed laxative in the northern region while in the western region, it is used in the treatment of skin diseases and diarrhoea.
Tectona grandis tg plant belonging to family verbenaceae, it is medicinally reported and claims to cure various diseases in indian traditional system ayurveda and in folklore. Antibacterial activity of ethanolic extract and compounds. Some remarkable benefits of teak are discussed below. Abstract fast dissolving tablets are disintegrating andor dissolve rapidly in the saliva without the need for water. The plants tectona grandis linn commonly known as teak is a large to very large deciduous tree, 2035 m in height with light brown bark. Largescale transcriptional profiling of lignified tissues. Tectona grandis on integrated taxonomic information system. Sometimes it is included in the subfamily prostantheroideae. Teak belongs to the family lamiaceae in older classifications in verbenaceae. Teak tectona grandis is a tropical hardwood tree species placed in the flowering plant family lamiaceae.
Well known as teak, tectona grandis is widely used in african folk medicine for its pharmacological relevance. Considering how important the secondary xylem and sapwood transition from young to mature trees is, little is known about the expression differences between those successional processes and which transcription factors could regulate lignin. All structured data from the file and property namespaces is available under the creative commons cc0 license. Effect of methanolic extracts of tectona grandis linn leaves. Family verbenaceae is commonly called as teak shown in figure 1 and locally known as sagwan and one of the most famous timber plants in the world.
Efficient and new method for tectona grandis in vitro. Tectona grandis is an economically important species which is the source of most commercial teak wood products. Teak simple english wikipedia, the free encyclopedia. Teak is very stable, which means that it does not warp when subjected to variations in humidity and temperature. It even prevents any metal used in it from rusting. Bioassayguided investigation by brine shrimp lethality and termite activity tests from the heartwood of teak tectona grandis led to the fractionation of nhexane soluble extract.
Tectona grandis is a large, deciduous tree that occurs in mixed hardwood forests. Bagli department of pharmaceutics, kle college of pharmacy, nipani591237, karnataka, india. Effect of methanolic extracts of tectona grandis linn. Anatomical characterisation of teak tectona grandis wood decayed by fungus chrysosporium asperatum. Read an improved protocol for micropropagation of teak tree tectona grandis l. Antibacterial, cytotoxic and antioxidant potential of different extracts from leaf, bark and wood of tectona grandis mahesh s. Tectona grandis leaf extract, free and associated with nanoemulsions, as a possible photosensitizer of mouse melanoma. We do not intend the plant list to be complete for names of infraspecific rank. This page was last edited on 9 october 2019, at 19. Efficient and new method for tectona grandis in vitro regeneration crop breeding and applied biotechnology 17 11 17 125 and exogenous factors, including salt composition in the medium, explanttissue competence, plant growth regulators, and light cangahualainocente et al. Development and evaluation of herbal fast dissolving. Tectona grandis linn is a widespread hard wood plant used for both therapeutic and commercial purpose. Generally, those possessing free hydroxyl groups display good activities. Tectona grandis leaf extract, free and associated with.
Family verbenaceae is commonly called as teak and locally known as sagwan and one of the most famous timber plants in the world. Teak wood logs are most often invaded by chrysosporium asperatum. Influence of rainfall, irrigation and age on the growth. Pdf phytochemical analysis of leaves of tectona grandis linn. Aluminum sensitivity and optimum ca and ph requirement of teak tectona grandis linn. Recent genomic and transcriptomic studies of tectona grandis l. It is native to india, myanmar burma, southeast asia, malaysia, and indonesia, but is now planted in tropical to subtropical areas throughout the globe, not only for ornamental reasons.
Pdf basal areastump diameter models for tectona grandis. Efficient and new method for tectona grandis in vitro regeneration crop breeding and applied biotechnology 17 11 17 125 and exogenous factors, including salt composition in the medium, explanttissue competence, plant growth regulators, and light cangahualainocente et. Site maintenance lasting about 2 days is scheduled to begin at 7. Said to be the worlds biggest teak tree, it grows in parambikkulam forest, kerala, india. Teak is considered a very valuable wood because of its ability to withstand weather. Tectona grandis at germplasm resources information. Impacts of irrigation on the deciduous period of teak tectona grandis in a monsoonal climatekatsunori tanaka, a nobuaki tanaka, b naoko matsuo, c chatchai tantasirin, d masakazu suzuki e a department of environmental geochemical cycle research, japan agency for marineearth science and technology, 317325 showamachi, kanazawaku. Teak is also considered as a major constituent in many folklore medicines. Micropropagation, teak, tectona grandis, rita bioreactors, temporary immersion, ex vitro rooting 1. Influence of rainfall, irrigation and age on the growth periodicity and wood structure in teak tectona grandis in iawa. Teak tectona grandis is one of the most valuable timber yielding species in the world, with predominant distribution in tropical or subtropical countries.
Tectona is native to south and southeast asia, mainly india, pakistan, bangladesh, myanmar, indonesia and thailand, and are commonly found as a component of monsoon forest vegetation. Nochoice feeding tests using ethanol, chloroform, and acetone extractives of teak tectona grandis heartwood clearly showed feeding deterrent activity and toxicity to the subterranean termite reticulitermes speratus. This plant is well known for its dimensional stability, extreme durability and hardness which also resist decay even when unprotected. Canadian journal of forest research nrc research press. This species occurs naturally in india, myanmar, laos and thailand and has become naturalized in indonesia. Comparative analysis of medicinal properties of the bark and. Tectona paris garden furniture, quality outdoor teak and. In this study, samples of microfungi were collected from both asymptomatic stems and dead wood, and symptomatic branches, stem and leaves of t.
May 19, 2016 to date there is virtually no information available concerning the fungi associated with tectona grandis teak lamiaceae in thailand. Photodynamic effect was observed for both tge and tgene because. Invitro antioxidant potential and phytochemical screening of tectona grandis linn. Tectona definition of tectona by the free dictionary. Teak is the common name for the tropical hardwood tree species tectona grandis and its wood products. Characterization of tectona grandis extractives by gcms and ir and their infusion into rubberwood to modify dimensional stability tongtong li, guanjun li, quanji lu, jiannan zhou, min li, shixin zhang and jianing li teak tectona grandis has been popularly known in the wood industry as a precious material due to its natural dimensional stability. Usda, international institute of tropical forestry. The plant list includes 5 scientific plant names of species rank for the genus tectona. Nac proteins are one of the largest families of plantspecific transcription factors tfs. They regulate diverse complex biological processes, including secondary xylem differentiation and wood formation. Antioxidant activity of tectona grandis linn s tem bark.
Characterization and isolation of quinones from tectona. Endusers requirements for fastgrown tectona grandis timber include straight bole with least taper, reduced flutes and buttresses as well as wood free of knots. Tectona grandis at national center for biotechnology information. Tectona grandis, commonly known as teak, is a tall deciduous tree that typically grows to 150 tall in its native habitat, but to about 80 in cultivation.
Tectona grandis is native to south and southeast asia, mainly india, indonesia, malaysia, and burma, but grows in many countries, including those in africa and the caribbean. Comparative analysis of medicinal properties of the bark and leaves of tectona grandis oke, david gbenga and ogunjimi, babatunde emmanuel department of chemistry and industrial chemistry, bowen university, nigeria abstract this study was carried out to compare the proximate and phytochemical properties of leaves and back of tectona grandis. The tree is endemic in southern and southeast asia but is now also cultivated in plantations in many of the tropical countries of africa and central america kertadikara and prat 1995. Comparative analysis of medicinal properties of the bark. If you continue browsing the site, you agree to the use of cookies on this website.
Tectona synonyms, tectona pronunciation, tectona translation, english dictionary definition of tectona. International journal of pharmaceutical and medicinal research. After the washing by alkaline solution and followed by saponification, the unsaponifiable, acidic and insoluble fractions were obtained. The amount of 2methylanthraquinone maq in teak wood extractives was not related to the feeding deterrents or toxicity, as shown by the nochoice feeding tests conducted using. A taxonomic genus within the family lamiaceae tectona grandis, the source of almost all commercial teak, and its endangered close relatives. The purpose of this study is to examine the methanol extract of tectona grandis leaves tgme in streptozotocin stz induced diabetic neuropathy in rat. Sound wood blocks of tectona grandis inoculated with c. It is not possible to distinguish the country of origin. When it is long it may reach up to 10 metres, the final bole form is positively affected, but earlyflowering trees may develop extremely wide crowns and short boles. Tectona grandis linn belongs to the family verbenaceae.