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1.
广西产生姜精油成分的研究   总被引:3,自引:0,他引:3       下载免费PDF全文
陈秀珍  全德健  邓和兴   《广西植物》1992,12(2):129-132
采用水蒸汽蒸馏法,提取三种广西产生姜的精油,并进行了分析比较。通过GC/MS/DS技术对姜的精油进行定性、定量分析,检出53个成分,鉴定其中34个,占精油的92.2%。  相似文献   

2.
用直接测序法对国产黑果山姜Alpinia nigra(Gaertn.)Burtt以及“水山姜Alpinia aquatica (Koen.)Rose”。的核糖体DNA中的内转录间隔区(ITS)序列进行了测定,结果显示两者序列完全一致;ITS1长度为178bp,ITS2长度为232bp,5.8S编码区长度为164bp,GC含量为56.9%,形态学特征结合DNA分子证据,认为《中国植物志》记载的水山姜实为黑果山姜。  相似文献   

3.
对黑果山姜Alpinia nigra(Gaertn.)Burtt和舞花姜Globba racemosa Smith叶进行了组织构造观察,为其原植物鉴定提供了依据。  相似文献   

4.
侧穗姜Zingiber ellipticum曾因其花序自茎侧穿叶鞘而出而被童绍全等(1987)置于偏穗姜属作为新种椭圆偏穗姜发表,但侧穗姜的侧生退化雄蕊与唇瓣连合,使唇瓣具3裂片,其药隔附属体发达,延长弯曲成喙状,包囊花柱,具有典型的姜属花的特征;由于姜属侧穗姜组Sect. Pleuranthesis Benth. 的花序亦为侧生,因此,该植物应置于姜属而不应置于偏穗姜属。侧穗姜的花粉表面具脑皱状纹饰,与姜属姜组的花粉纹饰相同,形态亦相似,而与表面具长刺的偏穗姜属花粉迥异。侧穗姜种子内种皮由砖形薄壁细胞构成,与姜属的薄壁细胞型内种皮相同,而与偏穗姜属的石细胞型内种皮明显区别。本文综合花的形态学、孢粉学和种子解剖学特征,将侧穗姜转移至姜属并建立新组合〖WTBX〗Zingiber ellipticum[WTBZ] (S. Q. Tong et Y. M. Xia) Q. G.Wu et T. L. Wu.  相似文献   

5.
蔗糖和多效唑对试管生姜形成的影响   总被引:6,自引:0,他引:6  
用不同浓度的蔗糖、NAA、Ca3(PO4)2、多效唑(Pac)和光照条件对江西兴国九山生姜(ZingiberofficinaleRosc.cv.Jiushan)进行试管姜的诱导,成功诱导出试管姜。结果表明,诱导试管姜的最佳培养基为:MS 6-BA0.2mgL-1 NAA0.5mgL-1 Ca3(PO4)22.5mgL-1 Pac2.5mgL-1 蔗糖8%;适宜浓度的Pac、Ca3(PO4)2、蔗糖有利于试管姜诱导;NAA和6-BA对试管姜的诱导不起促进作用;延长光照时间有利于试管姜膨大。  相似文献   

6.
黑姜(Kaempferia parviflora)是东南亚地区广泛栽培的民间药用植物,被用于制造食品、化妆品和医药品。黑姜在我国西双版纳傣族自治州亦有较长的民间药用栽培历史。根茎是黑姜重要的药用部位,主要含有黄酮类物质。许多药理作用研究表明黑姜具有抗肿瘤、增强男性性能力、抗炎、抗氧化、抗真菌、抗病毒、神经保护、血管舒张和心脏保护活性、经皮促渗等作用。对黑姜的化学成分、药理作用及毒理学研究进行综述,以期为进一步深入研究和开发利用黑姜资源提供帮助。  相似文献   

7.
广西单子叶植物五新种   总被引:3,自引:0,他引:3       下载免费PDF全文
方鼎  覃德海   《广西植物》1996,16(1):3-8
广西单子叶植物五新种方鼎,覃德海(广西中医药研究所,南宁530022)关键词仙茅科,球序仙茅,兰花蕉科,长萼兰花蕉,姜科,裂舌姜,少斑姜,长腺姜FIVENEWSPECIESOFMONOCOTYLEDONEAEFROMGUANGXI¥FangDing;...  相似文献   

8.
生姜离体芽的快速繁殖   总被引:3,自引:0,他引:3  
姜(Zingiber offcinale Rose.)是芭蕉目、姜(襄荷)科的单子叶植物,其肉质根状茎富含姜醇、姜烯、枸橼醛和桉油精等芳香成分以及辛辣成分姜素。姜皮、姜片均可入药,具解表散寒,温胃止呕,祛痰止咳和解毒等功能。与泻下剂同用,可减轻肠绞  相似文献   

9.
艳山姜的果实俗称香料砂仁,兼具药用和食用价值,可作为香料专用作物进行规模化种植.介绍了它的生物学特性、繁殖方法及栽培管理技术等方面的内容,以供种植者参考.  相似文献   

10.
崖姜蕨Pseuchodrynaria coronans(Wall.)Ching.是一种药用、观赏兼备的珍稀蕨类植物。本文报道该种植物引种和繁殖技术,以便为合理开发与保护这一珍贵资源提供科学资料。  相似文献   

11.
We discuss the utilization of signal processing techniques during surgical procedures. These techniques are used to provide real-time monitoring of nervous system function. We describe the historical development of these techniques and the hardware and software that have been used to implement them.  相似文献   

12.
Dendritic processing multiplies the computational power of a single neuron by enabling the processing of inputs in a spatio-temporally differentiated manner. Recently, the development of new and refined optical, electrophysiological and molecular-biological techniques has led to new insights into dendritic function and revealed an astonishing plethora of computational mechanisms.  相似文献   

13.
油菜作为优势能源作物的发展潜力与展望   总被引:12,自引:0,他引:12  
介绍了生物能源的发展趋势、国内外油菜生产、用途与发展潜力,应用油菜作为生物能源的现状、趋势与生物柴油加工技术,提出了我国加快优势能源作物发展的建议。  相似文献   

14.
下一代测序中ChIP-seq数据的处理与分析   总被引:1,自引:0,他引:1  
Gao S  Zhang N  Li B  Xu S  Ye YB  Ruan JS 《遗传》2012,34(6):773-783
将染色质免疫共沉淀技术(ChIP)与下一代高通量测序技术相结合的染色质免疫共沉淀测序(ChIP-seq),已成为功能基因组学、特别是基因表达调控领域研究的关键技术。ChIP-seq实验带来的海量数据向生物信息学研究人员提出了新的挑战。由于此领域数据处理技术的发展大大滞后于实验技术进步,有必要系统地介绍和回顾ChIP-seq数据处理的各个方面,以便更多研究人员进入此领域设计或改进相应的算法。文章结合实例详细介绍了ChIP-seq数据整个流程,并重点讨论了其中的主要问题和关键环节,为这一研究领域的科研人员提供一个快速而深入的认识。  相似文献   

15.
Pseudocapacitive materials are used for supercapacitor applications due to their exceptionally high capacitance and low cost. Good capacitive performance of the pseudocapacitive materials at high active mass loadings is vital for the development of the next generation of supercapacitor devices. This review describes recent advances in materials and nanotechnologies, which allows the development of advanced pseudocapacitive devices with high active mass. An important breakthrough is the discovery of novel dispersing and capping agents for the colloidal processing of nanoparticles. Particularly important are novel co‐dispersants that exhibit enhanced adsorption on materials of different types, such as inorganic nanoparticles, carbon nanotubes, and graphene. Conceptually new strategies are designed to fabricate coated particles. Recent innovations pave the way for the development of multifunctional redox‐active dopants‐dispersants and dopants‐oxidants to manufacture conductive polymer composites. Among the most important advances in nanotechnology is the development of template methods and heterocoagulation techniques for composite manufacturing. The progress in the design of novel surface modification techniques and materials, discovery of advanced anchoring groups, and development of liquid–liquid extraction allows agglomerate‐free processing of nanomaterials and composites. This review describes fundamental aspects of novel technologies and their applications in the manufacturing of pseudocapacitive devices for energy storage.  相似文献   

16.
The emerging field of computational morphodynamics aims to understand the changes that occur in space and time during development by combining three technical strategies: live imaging to observe development as it happens; image processing and analysis to extract quantitative information; and computational modelling to express and test time-dependent hypotheses. The strength of the field comes from the iterative and combined use of these techniques, which has provided important insights into plant development.  相似文献   

17.
Since the discovery of the electron microscope and the development of the initial techniques for the processing of biological samples for electron microscopy, the protozoan Trypanosoma cruzi has been the subject of intense investigation. This review analyzes the results obtained by observation of whole trypanosomes as well as thin sections and replicas using several microscopic approaches. Micrographs detailing the appearance of T. cruzi using several methods illustrate the evolution of electron microscopic techniques as well as its contribution to understanding the structural organization of the protozoan.  相似文献   

18.
This review addresses the potential biotechnological techniques for textile fibre extraction (degumming), mainly focusing on bamboo, one of the main and recently developed textile natural fibres in China. The latest developments in microbial and enzymatic processing for ecological fibre extraction as well as the development of a molecular technique for natural fibre bio-treatment are highlighted.  相似文献   

19.
Recent advances in computational processing power and molecular docking algorithms have facilitated the development of computer-aided methods for the rapid and efficient discovery of G-quadruplex-interacting molecules. In this article, we provide an introductory framework for the methodology of in silico screening for the identification of novel DNA G-quadruplex ligands from chemical libraries. We discuss aspects of model construction, database selection and molecular docking techniques, and highlight representative examples from this field. Finally, we offer a perspective on the potential application of in silico techniques for the discovery of RNA G-quadruplex-binding ligands in the future.  相似文献   

20.
MicroRNAs (miRNAs) constitute a novel class of short, non-coding RNAs that play crucial roles as silencers of gene expression during biological processes such as development, growth control, cell death, and differentiation. To ensure correct function, the expression of miRNAs must be tightly regulated, a process that is believed to take place at the promoter level. Regulation of the miRNA processing cascade has only recently been shown to play an important role as well and we envision the discovery of additional factors affecting or modulating miRNA processing and ultimately miRNA expression. The biochemical analysis of such factors requires a robust assay to monitor miRNA processing. Here, we discuss protocols and techniques that were used to investigate how the expression of brain-specific miRNA miR-138 is controlled at the level of precursor-miRNA (pre-miRNA) processing.  相似文献   

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