Novel Galactolipids from the Leaves of Ipomoea batatas L.: Characterization by Liquid Chromatography Coupled with Electrospray Ionization–Quadrupole Time-of-Flight Tandem Mass Spectrometry
作者:Assunta Napolitano、Virginia Carbone、Paola Saggese、Kinya Takagaki、Cosimo Pizza
DOI:10.1021/jf071331z
日期:2007.12.1
Sixteen novel and ten known galactolipids have been isolated and characterized from the leaves of Ipomoea batatas L. (sweet potato) using an analytical method based on high-performance liquid chromatography coupled with electrospray ionization-quadrupole time-of-flight tandem mass spectrometry. Using this technique, the structures and regiochemistries of the fatty acyl groups and the positions of the
使用高效液相色谱和电喷雾电离-四极杆飞行时间串联质谱联用的分析方法,从番薯叶中分离并鉴定了十六种新型半乳糖脂和十种已知的半乳糖脂。使用这种技术,确定了脂肪酰基的结构和区域化学以及酰基链上双键的位置。通过分析一维和二维核磁共振谱来鉴定糖部分。通过气相色谱-质谱法确定了多不饱和脂肪酸双键的位置,并在某些情况下确定了它们的几何形状。这是甘薯叶中半乳糖脂的首次报道。