万佛山自然保护区蕨类植物区系特征及资源利用

目的:对安徽大别山东南部的万佛山蕨类植物进行资源调查,探明其区系特征与资源利用。方法:对万佛山区进行实地调查,标本采集和鉴定,并对它们的区系类型进行了分析。结果:蕨类植物有71种,隶属24科,39属,集中分布于海拔400~1100 m;具有明显热带性质和丰富的温带成分;并以水龙骨科、鳞毛蕨科、蹄盖蕨科等在系统演化上较高级的类群占优势。结论:万佛山区蕨类植物资源较为丰富,值得合理利用。     

3种天山蕨类植物体外抑菌活性研究

目的筛选新疆天山蕨类植物抑菌活性种类和药用部位.方法用滤纸片法,用3种蕨类植物营养叶、孢子叶和茎的乙醇提取液,对7种供试菌进行了抑菌活性测试.结果 3种蕨类植物营养叶、孢子叶和茎对6种实验菌都有良好的抑菌活性;3种蕨类植物对大肠杆菌、金黄色葡萄球菌和八叠球菌有较强的抑菌作用,对短芽孢杆菌、枯草芽孢杆菌和铜绿假单孢菌的作用较弱,而对白色念珠菌无任何抑菌作用.结论不同浓度的样品具有不同程度的抑菌作用.     

新疆天山八种蕨类植物体外抑菌活性初探

目的筛选新疆天山蕨类植物抑菌活性的种类及明确药用部位,为合理开发提供科学依据.方法用双层平板打孔法和滤纸片法,对8种蕨类植物营养叶或孢子叶的乙醇提取液进行了抑菌试验.结果 8种植物对实验菌有不同程度抑制作用,其中,对大肠杆菌和金黄色葡萄球菌的作用最强,对枯草杆菌、绿脓杆菌和变形杆菌的作用较弱,而对白色念珠菌无任何抑菌作用.结论新疆天山蕨类植物具有一定的抑菌作用.     

Antimicrobial activity of some important Adiantum species used traditionally in indigenous systems of medicine

Adiantum Linn. of Adiantaceae family is one of the most common and widely distributed species. Ethnomedicinally, the genus is important and popularly known as "Hansraj" in Ayurvedic System of Medicine. It has been used in cold, tumors of spleen, liver and other viscera, skin diseases, bronchitis and inflammatory diseases. It is also considered as tonic and diuretic. In the present study its four important species, i.e. Adiantum capillus-veneris, Adiantum peruvianum, Adiantum venustum and Adiantum caudatum were collected and extracted with methanol. These extracts were tested for their antimicrobial agents against five gram positive, six gram negative (including multiresistant bacteria Staphylococcus aureus) and eight fungal strains using standard microdilution assay. The maximum activity was exhibited by the methanolic extract of Adiantum venustum followed by Adiantum capillus-veneris, Adiantum peruvianum and Adiantum caudatum. The methanolic extract of Adiantum capillus-veneris had very low MIC value (0.48 microg/ml) against Escherichia coli whereas, Adiantum venustum extract against Aspergillus terreus with MIC of 0.97 microg/ml. Total phenolic constituents of Adiantum species viz. Adiantum venustum, Adiantum capillus-veneris, Adiantum peruvianum and Adiantum caudatum were 0.81% (w/w), 0.83% (w/w), 0.71% (w/w) and 0.52% (w/w), respectively (as gallic acid equivalent); implying that the observed activity could be related to the amount of phenolics.     

雷公山保护区药用蕨类植物资源调查

目的:对雷公山自然保护区药用蕨类植物的资源进行调查研究.方法:采用野外实地考察、资料查阅、标本的采集和鉴定以及药用蕨类植物资源蕴藏量的调查等研究方法进行调查.结果:雷公山自然保护区共有药用蕨类植物35科75属190种,占贵州药用蕨类植物总数的44％.科、属、种类型组成合理,药材品种达215种,其中清热类药物品种较多且蕴藏量较大.结论:雷公山自然保护区药用蕨类植物种类繁多,区系成分复杂,资源特别丰富,科、属、种类型组成合理,生态环境保护较好,对于开发和利用该区药用蕨类植物具有很大的价值.