Plant Sterol Mixture 植物甾醇混合物

植物甾醇混标    25 mg/ml, 1ml
(b-sitosterol 53%, stigmasterol 7%, campesterol 26%, brassicasterol 13%)
（谷甾醇，豆甾醇，菜油甾醇，菜子甾醇）
Source: plant
Solvent: chloroform
Storage: -20°C
Components: (approximate amounts)
Brassicasterol (13%)
Campesterol (26%)
Stigmasterol (7%)
beta-Sitosterol (53%)

GC Conditions:
Column: RTX-1 30m x0.25mm x0.2µm
Carrier Gas: helium Linear Velocity: 20cm/sec
Make-up Gas: nitrogen  Flow Rate: 40ml/min
Split Ratio: 100:1  Vent Flow: 70ml/min
Oven Initial: 325°C Program Rate: Isothermal
Detector: FID, 350 °C  Injector: 350°C
GC elution order: Brassicasterol, Campesterol, Stigmasterol, beta-Sitosterol
This qualitative mixture contains four major plant sterols isolated from natural sources and is ideal for use as a standard with gas chromatography, 1 mass spectrometry, and high performance liquid chromatography.