Showing papers on "Michelia published in 2012"
TL;DR: Ninety-four compounds isolated from nine species of the genus Michelia like sesquiterpenes, steroids, flavonoids, aporphines, phenols, esters, benzenoid and alkaloids have antibacterial, anticancer and antiplasmodial activities.
Abstract: The genus Michelia, belonging to family Magnoliaceae, consists of about 80 plant species mainly distributed in South Asian countries. The plants of this genus have been traditionally used in curing various diseases like fever, colic, leprosy, eye disorders, inflammation, antidote for scorpion, etc. Ninety-four compounds isolated from nine species of the genus Michelia like sesquiterpenes, steroids, flavonoids, aporphines, phenols, esters, benzenoid and alkaloids have antibacterial, anticancer and antiplasmodial activities. This review presents first time detailed information on chemical and biological properties of constituents isolated from the genus Michelia.
14 citations
TL;DR: Michelia xianianhei Q. N. Vu, a new species of Michelia from Dien Bien Province, northern Vietnam is described and illustrated.
Abstract: Michelia xianianhei Q. N. Vu, a new species of Michelia from Dien Bien Province, northern Vietnam is described and illustrated. Michelia xianianhei is closely related to M. balansae (Aug. DC.) Dandy but differs mainly in the young twigs, petioles, terminal buds and brachyblasts being densely greyish silky hairy, 9–11 yellowish tepals, bigger fruit, and shorter fruiting gynophore.
4 citations
TL;DR: High Performance Thin Layer Chromatography has been developed for detection, and quantification of β-sitosterol in Michelia champaca (leaves and stem-bark), after its detection and characterization initially by TLC and was found to be a rapid and easy approach for detection and the quantitation of the bio-marker β- sitosterol.
4 citations
01 Jan 2012
TL;DR: In this paper, the authors used DPS (Data Processing System) to classify 40 common tree species from Jiangxi Province into four categories (strongest,stronger,general, and combustion species).
Abstract: Selection of strong fire-resistance tree species through study of their physical and chemical properties is important in construction of fire-preventing forest belt.Forty common tree species from Jiangxi Province were collected for determination of different organs' physical and chemical properties,and for combustion test.Seventeen factors such as moisture content,ignite temperature,energy content,ash content,crude fat content,lignin content,crude fiber content,burning time,burning intensity,bark thickness,were chosen as the classification indexes,through using DPS(Data Processing System),the speies were clustered into four categories(strongest,stronger,general,and combustion species).The strongest fire-resistant species were Symplocos setchuancnsis Brand,Buxus megistophylla Levl.,Pittosporum Banks ex Soland,Viburnum awabuki,Ilex purpurea Hassk.,Michelia chapensls,Michelia macclurel,Schima superba Gardn.et Champ.,and Cinnamomum camphora(L.) presI.,Cinnamomum burmannii,Castanopsis sclerophylla(Lindl.)Schott.,Thea Oleosa Lour.(Camellia oleifera Abel.),Cinnamomum Camphora(Linn) Presd.,Ligustrum lucidum Ait.,Michelia figo(Lour.)Spreng..The stronger fire-resistant species were Camptotheca acuminata Decne.,Populus canadensis Moench.,Paulownia fortunei Hemsl.,Loropetalum Chinense var.rubrum(Yieh.),Liriodendron chinense(Hemsl.) Sarg.,Nerium oleander,Elaeocarpus sylvestris(Lour.)Pior.,Magnolia denudata Desr.,Manglietia patungensis Hu.,Ternstroemia gymnanthera(Wight et Arn.)Sprague.The general fire-resistant species were Lithocarpus glaber(Thunb.)Nakai.,Camellia japomica,Osmanthus fragrans,Sabina chinensis(Linn.) Ant.,Sabina chinensis cv.kaizuka,Cryptomeria fortunei Hooibrenk ex Otto et Dietr..The weak fire-resistant species were Phyllostachys pubescens,Cunninghamia lanceojata(Lamb.)Hook.,Aceraceae fabri Hance.,Podocarpus macrophyllus(Thunb.) D.Don,Pinus massoniana Lamb.,Pinus elliottii Engelm.,Cedrus deodara(Roxb.)G.Don.,Metasequoia glyptostroboides Hu et cheng,Pseuxdolarix kaempferi(LindI) Gord.
2 citations
Journal Article•
TL;DR: Chang et al. as discussed by the authors extracted volatile oils from the leaves of the three species of Michelia coriacea and their chemical components were analyzed by Gas Chromatography-Mass (GC-MS).
Abstract: In order to obtain a profound understanding of the development and use values of Michelia coriacea H.T.Chang et B.L.Chen,Michelia opipara H.T.Chang et B.L.Chen and Michelia champaca Linn.,the volatile oils from the leaves of the three species were extracted with SDE and their chemical components were analyzed by Gas Chromatography-Mass(GC-MS).Among the results,a total of 20 compounds,accounting for 97.54% of its all volatile substances,were identified from Michelia coriacea H.T.Chang et B.L.Chen,whose main components are alpha-Farnesene,beta-Maaliene,germacrene B and Valencene;a total of 36 compounds,accounting for 98.47%,were identified from Michelia opipara Chang et B.L.Chen,whose main components are Nerolidol,alpha-Pinene,beta-Linalool and 2,6-Octadienal,3,7-dimethyl-3,7;a total of 19 compounds,accounting for 95.93%,were identified from Michelia champaca Linn.,whose main components are Germacrene B,beta-Linalool,Ocimene,Caryophyllene,Eucalyptol,β-elemene and Benzylcarbinyl isobutytate.The leaves of the three species contain many high bioactive compounds with very important uses for perfume and medicine industries.
1 citations
09 May 2012
1 citations
TL;DR: In this article, the authors used a single-beam normalized photo-acoustic tomography spectroscopy (PAS-CT) with non-damage detection to confirm the growth of trees.
Abstract: By using a new kind of single-beam normalized photo-acoustic tomography spectroscopy (PAS-CT) technology with non-damage detection, the photo-acoustic tomography spectroscopy, optical absorption properties and photosynthetic pigment content of the green and yellow leaves of Michelia alba were studied. The results show that: photo-acoustic tomography spectroscopy could be obtained from different chopping frequency and different sample position. The more photosynthetic pigment content the leaves of Michelia alba contains, the bigger optical absorption coefficient and the higher photosynthetic efficiency they have. In the research, we could find that the photosynthetic pigment content of the green leaves of Michelia alba is higher than that of the yellow ones. As a result, the optical absorption coefficient and the photosynthetic efficiency of the green ones are higher than the yellow ones. The photo-acoustic tomography spectroscopy technology could be a kind of non-damage detection to confirm the growth of trees.