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Zhang J.,Yunnan Academy of Agricultural Sciences | Yuan T.,Yunnan Academy of Agricultural Sciences | Yuan T.,Yunnan Reascend Tobacco Technology Group Co. | Wang Y.,Yunnan Academy of Agricultural Sciences | And 2 more authors.
Biological Trace Element Research

The concentrations of nine mineral elements were determined by atomic absorption spectroscopy in Gentiana rigescens from three zones (middle, southeast, and northwest zones) of Yunnan province in China. The average concentrations of mineral elements were found in the order K>Ca>Mg> Fe>Na>Zn>Cu>Cr>Se. Samples collected from the middle zone of Yunnan were enriched in Na (242.24 ± 50.80 mg/kg) and Mg (959.78 ± 54.60 mg/kg). However, materials from the southeast zone were particularly enriched in Ca (3,448.70 ± 749.82 mg/kg), but depleted in Se. Whereas those from the northwest zone were plentiful of K (2,746.89 ± 84.84 mg/kg), Fe (923.06 ± 127.52 mg/kg), Zn (261.38 ± 53.05 mg/kg), Cu (110.08 ± 46.23 mg/kg), and Se (53.99 ± 22.38 mg/kg). © 2011 Springer Science+Business Media, LLC. Source

Guo J.-P.,Yunnan University | Tan J.-L.,Yunnan University | Wang Y.-L.,Yunnan University | Wu H.-Y.,Yunnan University | And 6 more authors.
Journal of Natural Products

Six indole alkaloids with various levels of prenylation were isolated from the thermophilic fungus Talaromyces thermophilus strain YM3-4. Their structures were identified by NMR and MS spectroscopic analyses. Compounds 1 and 2 are new analogues of the key versatile precursor notoamide E. Compound 3 is a novel analogue of preechinulin, and compound 4 was reported as a natural occurring cyclo(glycyltryptophyl) for the first time. The metabolite profile of this thermophilic organism displayed a biosynthetic pathway for talathermophilins. © 2011 The American Chemical Society and American Society of Pharmacognosy. Source

Ma S.-X.,Yunnan Nationalities University | Chen W.,Yunnan University | Yang X.-D.,Yunnan University | Zhang N.,Yunnan Nationalities University | And 3 more authors.
Journal of Pharmaceutical and Biomedical Analysis

The inclusion complexation behavior, characterization and binding ability of alpinetin with hydroxypropyl-β-cyclodextrin (HPβCD) has been investigated in both solution and the solid state by means of UV-vis spectroscopy, FT-IR, 1H and 2D NMR, XRD, SEM and DSC. The results showed that the water solubility and stability of alpinetin were obviously increased in the inclusion complex with HPβCD. This satisfactory water solubility and high stability of the alpinetin/HPβCD complex will be potentially useful for its application as herbal medicine or healthcare products. © 2012 Elsevier B.V. Source

Zhang C.-M.,Yunnan University | Huang X.-W.,Yunnan University | Pan W.-Z.,Yunnan University | Pan W.-Z.,Yunnan Reascend Tobacco Technology Group Co. | And 6 more authors.
International Journal of Systematic and Evolutionary Microbiology

Two novel thermophilic, spore-forming bacterial strains, T-11T and E-112T, were isolated from hot springs in Tengchong and Eryuan counties of Yunnan province in south-west China. The strains were Gram-stain-positive rods, occurring singly or in chains. Growth of strain T-11T was observed between 30 and 75 °C (optimum 50 °C) and at pH 7-11 (optimum pH 8.5), while the temperature range for strain E-112 T was 35-70 °C (optimum 55 °C) and the pH range was 7.0-11.0 (optimum pH 8.0). The DNA G+C contents of strains T-11T and E-112T were 41.1 and 42.6 mol%, respectively. On the basis of 16S rRNA gene sequence similarity, the two strains were shown to be related most closely to Anoxybacillus species. The chemotaxonomic characteristics [predominant isoprenoid quinone menaquinone 7 (MK-7); major fatty acids iso-C15:0 and iso-C17:0] also supported the affiliation of strains T-11T and E-112T to the genus Anoxybacillus. The results of DNA-DNA hybridization and physiological and biochemical tests allowed genotypic and phenotypic differentiation of strains T-11T and E-112T from Anoxybacillus species with validly published names. Strains T-11T and E-112T therefore represent two novel species, for which the names Anoxybacillus tengchongensis sp. nov. (type strain T-11T =CCTCC AB209237T =KCTC 13721T) and Anoxybacillus eryuanensis sp. nov. (type strain E-112T =CCTCC AB209236T =KCTC 13720T) are proposed. © 2011 IUMS. Source

Hong M.,Chinese Academy of Forestry | Qingjie P.,Shaohai Development Management Office of Jiaozhou City | Lan W.,Yunnan Reascend Tobacco Technology Group Co. | Zhenghong L.,Chinese Academy of Forestry | And 2 more authors.

Taxonomic study of the diversity of Musella lasiocarpa (Franch.) C. Y. Wu ex H. W. Li (Musaceae) in China has revealed an attractive new variety from Sichuan Province, southwestern China. Musella lasiocarpa var. rubribracteata Zhenghong Li &H. Ma differs from the autonymic variety by its orange-red to red bracts, the reddish to purple-red coloration of the abaxial surfaces of the petiole and leaf midrib, and a weaker ability of clone reproduction. Copyright © 2011 BioOne All rights reserved. Source

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