The most predominant sphingoilipids bases are phytosphingosine(phyto-sph) and phytosphingosine-1-phosphate(phyto-S1 P), followed by dihydrosphingosine(dh-sph) and dihydroshingosine-1-phosphate(dh-S1 P). In this study,...The most predominant sphingoilipids bases are phytosphingosine(phyto-sph) and phytosphingosine-1-phosphate(phyto-S1 P), followed by dihydrosphingosine(dh-sph) and dihydroshingosine-1-phosphate(dh-S1 P). In this study, a fast, sensitive and selective method for determining those four of sphingolipids by high performance liquid chromatography coupled to electrospray ionization ion trap mass spectrometry was introduced. Comparing two methods, method B’s recovery was better than method A. And the limit of detection(LOD) was between 0.003 to 0.013 μM for 20 μl injection.展开更多
利用1-丁基-3-甲基咪唑四氟硼酸盐([Bmim]BF4)和硫酸钠(Na2SO4)离子液体双水相萃取分离葡萄皮中齐墩果酸,分别对[Bmim]BF4、Na2SO4、齐墩果酸质量分数、萃取温度、p H值、低级醇进行了研究,确定双水相体系组成为18%[Bmim]BF4-16%Na2SO4,...利用1-丁基-3-甲基咪唑四氟硼酸盐([Bmim]BF4)和硫酸钠(Na2SO4)离子液体双水相萃取分离葡萄皮中齐墩果酸,分别对[Bmim]BF4、Na2SO4、齐墩果酸质量分数、萃取温度、p H值、低级醇进行了研究,确定双水相体系组成为18%[Bmim]BF4-16%Na2SO4,在25℃条件下,加入质量分数10%齐墩果酸、体积分数2%无水乙醇,调节p H 4.0,齐墩果酸萃取率可达97.9%,分配系数为16.58。利用这项技术有望为从天然植物中提取有效药用成分开辟一条崭新的思路。展开更多
基金Supported by Science and Technology Innovation Project of Hunan Academy of Agricultural Sciences (2021CX32)。
文摘The most predominant sphingoilipids bases are phytosphingosine(phyto-sph) and phytosphingosine-1-phosphate(phyto-S1 P), followed by dihydrosphingosine(dh-sph) and dihydroshingosine-1-phosphate(dh-S1 P). In this study, a fast, sensitive and selective method for determining those four of sphingolipids by high performance liquid chromatography coupled to electrospray ionization ion trap mass spectrometry was introduced. Comparing two methods, method B’s recovery was better than method A. And the limit of detection(LOD) was between 0.003 to 0.013 μM for 20 μl injection.
文摘利用1-丁基-3-甲基咪唑四氟硼酸盐([Bmim]BF4)和硫酸钠(Na2SO4)离子液体双水相萃取分离葡萄皮中齐墩果酸,分别对[Bmim]BF4、Na2SO4、齐墩果酸质量分数、萃取温度、p H值、低级醇进行了研究,确定双水相体系组成为18%[Bmim]BF4-16%Na2SO4,在25℃条件下,加入质量分数10%齐墩果酸、体积分数2%无水乙醇,调节p H 4.0,齐墩果酸萃取率可达97.9%,分配系数为16.58。利用这项技术有望为从天然植物中提取有效药用成分开辟一条崭新的思路。