Showing papers on "Michelia published in 2013"

Preliminary Researches on Influence of Several Kinds of Magnoliaceae Plants on Activity of Cholinesterase from Pig Serum

Abstract: Leaf extract of some kinds of Michelia plants could inhibit the activity of cholinesterase.Their inhibitory effect order was Michelia foveolataMerr.exDandy >Michelia maudiae >Michelia figo >Michelia shiluensis Chun et Y. F. Wu >Michelia crassipes Law >Michelia platypetala >Michelia skinneriana Dunn >Michelia wilsonii Finet et Gagnep. >Michelia balansae (DC.)Dandy. Among them inhibitory effect of Michelia balansae (DC.)Dandy was slightly.Leaf extract of Michelia viritepala Law et Zhou ined could activate the activity of cholinesterase. Leaf extract of Magnolia coco (Lour.) DC could inhibit the activity of cholinesterase.

Michelia fuscata essential oil extracted by vacuum water bath, and application thereof

Abstract: The invention provides michelia fuscata essential oil extracted by a vacuum water bath, and application thereof. The michelia fuscata essential oil is prepared by the following processes of: scalding the fresh michelia fuscata for three seconds by boiling water of 100 DEG C, pouring the scalded fresh flower and water of 60 DEG C into a round evaporator at the ratio of 1/2; firstly, carrying out rotary water bath for 10 minutes; then opening a vacuum pump to concentrate for 30 minutes in vacuum at 50 DEG C until no oily matter is generated; feeding volatile oil-water mixed vapor to a condenser, refluxing the vapor to an oil-water separating device in a condenser pipe because of low-temperature liquefaction; and obtaining the michelia fuscata essential oil by oil-water separation. The michelia fuscata essential oil prepared by the invention can be used as a flavouring agent, and also can be used as aroma chemicals and cigarette flavor. By combining with a vacuum technology, the oil yield of the fresh flower is improved under the premise of ensuring the activity of the michelia fuscata aromatic substance; and the processing cost is reduced.

A new name and seventeen new combinations in the Magnolia (Magnoliaceae) of China and Vietnam.

Abstract: A new name is proposed and seventeen new combinations are made as a result of the previous reduction of the remaining genera of subfamily Magnolioideae (Magnoliaceae) into the genus Magnolia. The replacement name Magnolia fansipanensis is proposed for Manglietia crassifolia Q. N. Vu et al., since its transfer to Magnolia would create an illegitimate later homonym of the fossil name M. crassifolia Gopp. A further 17 new combinations are made to transfer the following taxa to Magnolia: Manglietia guangzhouensis A. Q. Dong et al., M. kaifui Q. W. Zeng & X. M. Hu, M. lawii N. H. Xia & W. F. Liao, plus Michelia concinna H. Jiang & E. D. Liu, M. jianfenglingensis G. A. Fu & K. Pan, M. viridipetala Y. W. Law et al., M. wuzhishangensis G. A. Fu & K. Pan, M. xianianhei Q. N. Vu and Yulania carnosa D. L. Fu & D. L. Zhang, Y. cuneatofolia T. B. Chao (probably Zhao) et al., Y. dabieshanensis T. B. Zhao et al., Y. dimorpha T. B. Zhao & Z. X. Chen, Y. fragarigynandria T. B. Zhao et al., Y. shirenshanensis D. L. Fu & T. B. Zhao, Y. shizhenii D. L. Fu & F. W. Li, Y. verrucata D. L. Fu et al. and Y. xinyangensis T. B. Zhao et al. The transfer of the above taxa to Magnolia is necessary following the present almost universal recognition of Magnolioideae as one of two monogeneric subfamilies within Magnoliaceae.

Comparison of chlorophyll fluorescence Fv/Fm characteristics of four michelia trees

Abstract: The diurnal changes of chlorophyll fluorescence parameter Fv/Fm of seedlings of Michelia maudiae,Michelia platypetala,Michelia foveolata and Michelia wilsonii in different seasons and correlations be-tween Fv/Fm values and photosynthetically active radiation(PAR),air temperature(Ta)and air humidity(RH)were studied in this paper.The diurnal change range of Fv/Fm of four michelia trees in spring was small and the values in a whole day were higher than 0.75.There was no significant correlation between the chlorophyll fluo-rescence parameter Fv/Fm of four michelia trees and PAR,Ta and RH in spring.The values of Fv/Fm in a wole day in summer showed a trend of descending first and then ascending and the lowest values(﹤0.75)appeared between 12:00 and 14:00.A negative relation was founded between Fv/Fm value of Michelia maudiae and Ta and RH,while a positive correlation between Fv/Fm value of Michelia platypetala and Ta and RH in summer;there was a significant negative correlation between Fv/Fm value of Michelia foveolata and PAR and Ta in summer.Based on the diurnal changes trend and the Fv/Fm value in a whole day,the effects of reversible stress on the photosynthetic tissues of Michelia maudiae,Michelia platypetala and Michelia foveolata were founded in summer from 12:00 to 14:00.The significant negative correlation and positive correlation between the values of Fv/Fm of Michelia wilsonii and Ta and RH were also founded in summer,respectively.The values of Fv/Fm of Michelia wilsonii in a whole day in summer were below 0.75,indicating that there was irreversible stress effect on the pho-tosynthetic tissues of Michelia wilsonii in summer.The diurnal change of Fv/Fm of Michelia wilsonii in autumn presented a trend of descending first and then ascending,and the lowest value(0.72)was at 14:00,and there was a significant postive correlation between the value of Fv/Fm and RH.The diurnal changes of Fv/Fm of the other three michelia trees in autumn were small,and the values were higher than 0.75 in a whole day.Meanwhile,no significant correlation between the values of Fv/Fm of three michelia trees mentioned above,and PAR,Ta and RH were founded from experimental results in autumn.The diurnal changes of Fv/Fm of four michelia trees in winter were ascending at first and then descending,and significant postive correlation between the Fv/Fm and Ta was showed from the experimental results.The diurnal changes trend and the values of Fv/Fm in a whole day in winter indicated that the effects of stress on the photosynthetic tissues of four michelia trees were only reversible.

Study on Analysis of Michelia Flower & Michelia Leaf Oil by GC /MS and Their Application in Fragrances

Abstract: Michelia flower oil Michelia leaf oil were analyzed by capillary GC / MS method combined with computer retrieval. 83 constituents accounting to 96. 07% of total voletiles were identified in Michelia flower oil,72 constitutes accounting to 98. 08% of total volatiles were identified in Michelia leaf oil,where 62 constitutes were the same in both essential oils. The differences in constituents between two oils were compared and the resulted variation of their scents were also suggested. Their applications in fragrances were studied in the same formulation. It provided the reference for their use in fragrances.

AFLP and ISSR markers analysis of the genetic relationship of 7 kinds of magnoliaceae evergreen plants

Abstract: To establish optimized reaction system and construct phenetic trees,we analysed the genetic polymorphisms and relationship of 7 kinds of magnoliaceae evergreen plants with AFLP and ISSR markers.7 kinds of materials were analysed with 11 screened primers by ISSR and 131 bands were obtained,and 86 of them were polymorphic bands,each primer producing 11.10 bands,with an average polymorphism detection rate of 70.37%,which indicated that the polymorphism between those plant materials germplasm was very high.And then the 7 kinds of materials were analysed with 22 pairs of EcoR Ⅰ/Mse Ⅰ primer combinations by AFLP,1 310 bands,and 1 204 of them were polymorphism bands,each pair of primer producing 59 bands,and the polymorphism rate was 92.5%.The results of these two molecular markers showed that plants in Magnolia and Michelia were clustered together,the genetic differences between them could be identified by molecular markers,however,the Manglietia duclouxii in Magnoliaceae showed the most significant differences in clustering analysis,especially compared with Michelia,although their external form were similar,the genetic distance was farther.The study also found that among these two groups of genetic similarity coefficient,there were some numbers beyond the range of 0 to 1.This phenomenon was partial separation,and it is preliminarily infered that it was related with the sources of plant materials.

Method for extracting and separating michelia lactone from michelia compressa

Abstract: The invention belongs to the field of natural pharmaceutical chemistry, which discloses a method for extracting and separating michelia lactone from michelia compressa. In the method, michelia compressa is taken as a raw material, crushed at 20 to 40 meshes and added into an extraction kettle; absolute methanol is taken as entrainer; supercritical CO2 extraction is adopted; extraction liquid is collected; methanol is recovered, so as to obtain extractive matter; sherwood oil is used for circumfluence to remove oil-soluble impurities; oil-soluble substance is dissolved through lower alcohol; active carbon is added into the oil-soluble substance to perform circumfluence destaining; destaining solution is recovered to proper volume; purification is performed through a prepared liquid phase ODSRP-C18 reversed-phase column; a mixed solution of methanol and water is used for elution; corresponding components are concentrated; and sherwood oil-acetone (2:1, V/V) is recrystallized, so that michelia lactone products are obtained.

Modeling and analyzing the topology development of young michelia chapensis

Abstract: Michelia chapensis is one of the most important landscape trees and it is important to study the plant topology structure. We measured the 2 years old michelia tree through one year, study the tree topology structure, well fit and simulate the tree with the new GreenLab version.