1) pyrethrin
[英][pai'ri:θrin] [美][paɪ'riθrɪn, -'rɛθrɪn]
除虫菊脂
2) pyrethrins/hamacology
除虫菊脂类/药理学
3) pyrethrins
除虫菊酯
1.
Influence of supercritical carbon dioxide extraction of pyrethrins by using ultrasound;
超声场对超临界CO_2萃取除虫菊酯的影响
2.
Preliminary study on the effect of ultrasound on supercritical carbon dioxide extraction of pyrethrins;
超声场强化超临界CO_2萃取除虫菊酯的初步研究
3.
Separation and Purification of Natural Pyrethrins by Reversed Phase High Performance Liquid Chromatography;
反相高效液相色谱分离纯化天然除虫菊酯
4) pyrethrin
[英][pai'ri:θrin] [美][paɪ'riθrɪn, -'rɛθrɪn]
除虫菊素
1.
Efficacy of pyrethrin aerosol against mosquitoes and flies;
除虫菊素杀虫气雾剂对蚊蝇的药效研究
2.
Chromatographic techniques used in the sepration, preparation, structural comfirmation and determination of pyrethrin, cinerin, jasmolin, pyrethrin, cinerin and jasmolin are mainly TLCGCHPLC and GC-MS.
总结了TLC、GC、HPLC和GC-MS联用等现代色谱技术在除虫菊素各有效组分的分离、制备、结构鉴定和含量测定中的应用。
3.
The variety selection was also conducted by yield determination, pyrethrin content analysis and pesticide controlling experiment.
为了获取适宜在云南推广的高含量除虫菊素优良品种,从国外引进的8份除虫菊(PyrethrumcinerariaefoliumTrev)种质材料中,经组培快繁后,在云南省昆明、曲靖、楚雄、大理等地开展了组培苗的种植与品种选育研究,并经产量测定、含量分析和药效试验。
5) pyrethrin
[英][pai'ri:θrin] [美][paɪ'riθrɪn, -'rɛθrɪn]
除虫菊酯
1.
Study on extraction of pyrethrin by compressed CO_2;
压缩态CO_2萃取除虫菊酯的初步研究
2.
Supercritical carbon dioxide was used to extract pyrethrin from pyrethrum flowers.
采用超临界二氧化碳萃取除虫菊花中的有效成分除虫菊酯,设计了一个突然降压的过程,使除虫菊花的细胞壁破碎,减少过程的传质阻力。
3.
Compared with Soxhlet method and supercritical carbon dioxide extraction, microwave extraction of pyrethrins is a rapid method (about 200 s) with less solvent consumption (about 240 mL), higher yield and better product with light color.
对微波萃取、索氏提取和超临界二氧化碳萃取除虫菊酯的效果进行了比较 ,结果表明微波萃取法具有萃取时间短 (约 2 0 0 s) ,提取率高 ,溶剂用量少 (约 2 4 0 m L) ,产物品质好 ,色泽浅等优点。
6) pyrethrins
除虫菊素
1.
Control Effect of 2.5% Pyrethrins EC on Myzus persicae (Sulzer) in Tobacco Field;
2.5%除虫菊素乳油防治烟蚜田间药效试验
2.
Extracted pyrethrins from pyrethrum dried flower by super critical CO2 .
用超临界CO2从除虫菊干花中萃取的除虫菊素,这种膏状物不能直接用来加工或深加工杀虫产品。
3.
Application of microwave aid technique in the extraction of pyrethrins from the natural pyrethrum flower s was studied.
根据天然除虫菊花的生物化学特性,应用微波协助萃取技术来萃取天然植物除虫菊花中的菊素,在遵循不破坏除虫菊素中杀虫活性的前提下,选择适当的微波波长、萃取溶剂、溶剂用量、溶剂的pH值、微波计量、物料水分、温度、时间等因素控制得当,萃取效果十分明显;实践表明:采用此工艺,具有快速安全、简化工艺、节省能源、降低溶剂用量、降低成本、改善环境条件、提高产品纯度、减少装备投资等特点。
补充资料：除虫菊
| 除虫菊 pyrethrum cinerariifolium；Dalmatian chrysanthemum 菊科匹菊属的一种。原产欧洲，中国南北部分省区有栽培。是多年生草本杀虫植物，高15～80厘米，全株银灰色，被绒毛，叶羽状分裂。头状花序，边缘花为舌状花，雌性，花冠白色，中央管状花黄色。头状花序含有除虫菊素甲、乙及灰菊素甲、乙，除虫菊素甲的杀虫能力最强，10倍于除虫菊素乙。一般用于驱杀蚊虫，是蚊香的原料。 |
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条