双花露纯天然植物饮料成分分析

对双花露纯天然植物饮料中所含药用有效成分及营养成分的含量进行了检测。RP-HPLC法、紫外分光光度法、氨基酸自动分析仪法和原子吸收光谱法分别用于检测绿原酸、总黄酮、氨基酸和矿质元素的含量。结果表明:双花露纯天然植物饮料中所含绿原酸含量为301.61μg/mL,总黄酮含量为2.93mg/mL,氨基酸总含量为2.607mg/100mL,矿质元素Fe、Ca、K、Na、Mg、Zn的含量分别为2.65、4.66、119.55、101.47、11.36、0.52μg/mL。双花露纯天然植物饮料含有丰富的药用有效成分及营养成分,值得进一步推广。      

枸杞类胡萝卜素研究进展

枸杞是传统药食两用药材。现代研究表明,枸杞及其提取物对氧化损伤、老年性黄斑、肝损伤等多种疾病均有显著的预防和治疗作用,且类胡萝卜素是其主要功效成分之一。本文就近年来枸杞中类胡萝卜素类成分的结构分类、植物学代谢、功效作用、分离提取和产品研发进行简要的综述,并对其未来可能的研究方向和内容进行了展望。     

中国古代皇家园林的管理机构

历代皇家园林的内容、规模及地位是有差别的,因之管理机构的设置也各有不同。反之,从管理机构的组织,又可以探索当时皇家园林的地位、内容和作用。     

北京地区园林史略（一）

园林是把自然美、人工美，与为了提供生活上的便利所进行的各种构筑物，以及人文景观，这四者，密切的融汇起来。本文介绍了从战国时代到民国时期北京地区园林的变化和发展。同时介绍了北京地区园林的历史久远与内容深厚的全面的概念。     

Composition and in-vitro digestibility of carbohydrates of wheat plants harvested at bloom and soft-dough stages

Wheat plants (Triticum aestivum) were harvested at the bloom and soft-dough stages, separated into leaves + sheaths, stems and spikes, and the effect of stage of maturity on neutral detergent fibre (NDF) composition and degradability was studied, the accumulation of starch in the spikes compensated for the decrease in the degradability of NDF polysaccharides so that the in-vitro digestibility of the organic matter (OM) was not changed between the bloom and soft-dough stages. Minor compositional changes occurred in the NDF of the various botanical fractions which can hardly explain the drop in NDF degradability with maturity. There was a decline in the ratio of hemicellulose to lignin, and the changes in NDF-monosaccharide degradability were probably related to the extension of covalent bonding between those matrix components during maturation. Irrespective of botanical fraction and maturity stage, NDF xylose was less digestible than NDF glucose. Between bloom and soft-dough stages there was an increase of 36% in the yield of digestible OM.     

双孢菇对6种植物杀虫剂的敏感性

采用平板加药法研究了双孢菇对6种植物杀虫剂的敏感性。结果表明,相同浓度下,不同种类的杀虫剂对菌丝生长的影响存在显著差异;不同浓度下,同一种类的杀虫剂对菌丝生长的影响也存在显著差异。当6种杀虫剂的浓度为0.1%时,双孢菇菌丝的生长都被明显地抑制,部分菌丝体产生污染、出现畸变;当杀虫剂的浓度降低至0.01%-0.07%时,印楝素和高效氯氰菊酯对菌丝生长的抑制影响较小,但杀灭虫害的效果却很明显。     

中国植物性农药开发前景

从绿色食品的兴起谈起,分析了国内外农药市场的需求,根据中国实际,提出大力发展的植物性农药,重点介绍了印楝素,鱼藤酮,除虫菊酯等品种的研究动态和生产需求现状,提出了导向农药的新概念。     

中原城市屋顶花园景观设计研究

通过对中原城市的屋顶场地、自然气候、传统园林文化等因素的分析,制定了中原城市屋顶花园在植物配置、水景设计、地域文化表达方面的设计策略.     

Whole Plant Response of Lettuce After Root Exposure to BOA (2(3<Emphasis Type="Italic">H</Emphasis>)-Benzoxazolinone)

The goal of our work was to expand the knowledge about plant stress response to the allelochemical 2(3H)-benzoxazolinone (BOA). We focused on physiological processes that are affected by this secondary metabolite. Physiological and biochemical characteristics of plants exposed to BOA help us to better understand its mode of action and open the gate to the use of allelochemicals as “natural” herbicides. Measurements on photosynthesis, fluorescence, water relations, antioxidant enzymes (superoxide dismutase, peroxidase), ATPases, and lipid peroxidation indicated that a phytotoxic effect follows BOA exposition. This effect was intense enough to interfere with plant growth and development and to produce “induced senescence.” Based on this, we propose a multifaceted mode of action for BOA with effects at different levels and in different parts of the plant.     

植物源除草活性物质研究进展

综述了植物源除草活性物质研究进展，介绍了具有除草活性的植物源天然产物、植物源除草剂及其作用机理。