【摘 要】
：
通过滑菇菌丝体液体深层培养和子实体栽培获得富锌滑菇多糖.一定浓度的锌离子能促进滑菇菌丝体生长，提高滑菇子实体产量，并对杂菌污染有一定的抑制作用.通过抑制羟自由基(·OH)的产生、清除DPPH自由基和超氧阴离子(O2-·)研究滑菇富锌多糖的抗氧化活性，用Vc作为对照.富锌滑菇多糖对自由基的清除能力和多糖浓度呈现出明显的剂量-效应关系.富锌子实体多糖对·OH、O2-·和DPPH自由基的半数抑制浓度(E
论文部分内容阅读
通过滑菇菌丝体液体深层培养和子实体栽培获得富锌滑菇多糖.一定浓度的锌离子能促进滑菇菌丝体生长，提高滑菇子实体产量，并对杂菌污染有一定的抑制作用.通过抑制羟自由基(·OH)的产生、清除DPPH自由基和超氧阴离子(O2-·)研究滑菇富锌多糖的抗氧化活性，用Vc作为对照.富锌滑菇多糖对自由基的清除能力和多糖浓度呈现出明显的剂量-效应关系.富锌子实体多糖对·OH、O2-·和DPPH自由基的半数抑制浓度(Ec50)分别为0.56 mg/ml、0.69 mg/ml和0.62 mg/ml.对应的子实体多糖的半数抑制浓度(Ec50)分别为0.70 mg/ml、0.72 mg/ml和0.93mg/ml.富锌菌丝体多糖对·OH、O2-·和DPPH自由基的半数抑制浓度(Ec50)分别为0.49 mg/ml、0.58 mg/ml和0.60 mg/ml.对应的菌丝体多糖的半数抑制浓度(Ec50)分别为0.71 mg/ml、0.75 mg/ml和0.92 mg/ml.Vc对·OH、O2-·和DPPH自由基的半数抑制浓度(Ec50)分别为0.41 mg/ml、0.45 mg/ml和0.41 mg/ml.富锌滑菇多糖具有更强的抗氧化作用.
其他文献
With LED‐technology,not only the topic “energy efficiency” is in the focus of the product development.With white and color LEDs,the variation of the LED‐spectra for generation of the correlated color
Flexible Lighting will be an important path for WOLED to entry the market of lighting.With the distinguished conjunction of mechanical,electrical and optical properties,the flexible WOLED exhibits a m
Two host materials and an electron-transporting material are designed and synthesized by integrating proper charge transporting units into the tetraarylsilane skeleton.By employing these materials,a h
Thermal management is fundamental for the design of cost competitive and reliable LED systems.Lumen output and lifetime depend on the junction temperature.Therefore,experimental and simulation methods
该报告主要从LED显示屏器件的发展历程以及对应的显示屏特点进行简要概述，从LED显示屏早期的单、双色图文显示屏到目前的视频播放各阶段对应的LED器件的区别和各自的特点进行说明。并介绍了目前最热门的户内小间距LED显示屏的主要应用领域、未来的市场空间和潜力；重点介绍目前小间距LED显示屏应用过程中的主要瓶颈以及对应的LED器件待解决的技术门槛，从LED器件封装的过程中怎么样解决这些问题；小间距LED
For the overall consideration of technology,performance and cost,blue LED chip + phosphor is the best technique for lighting,because of its high technical maturity and relatively low cost.Among them,p
Compared with the rapid cost down of the LED chips,the cost reductions of LED’s package and light source assembly go slowly.That result in LEDs lack of competitiveness over traditional light sources (
To keep pace with growing lighting demand for a wide variety of applications,including general lighting,LED manufacturers need efficient and productive LED chips to keep bulb costs down.Although it is
The progress of technology and the demand of market are the two impetus of the development Of LED industry.The package of LED has undergone the various traditional dress package and the wired flip chi
The characteristics of silicone materials was introduced; and the effect of organosilicon polymer molecular structure on the properties of LED packaging materials and the application performance of LE