Unlock Exclusive Discounts & Flash Sales! Click Here to Join the Deals on Every Wednesday!

Analysis of non-saponifiable lipids by super-/subcritical-fluid chromatography (CAT#: STEM-CT-0058-LJX)

Introduction

Non-saponifiable lipids are lipids that do not form esters. They are mainly composed of annular structures. The two main types of non-saponified lipids are terpenes and steroids.
Because of the particular properties of carbon dioxide or carbon dioxide/modifier mobile phases, super- or subcritical-fluid chromatography (SFC) can be an alternative to more classical chromatographic methods such as gas chromatography (GC) or high-performance liquid chromatography (HPLC) for the separation of unsaponifiable lipids. These fluids can also be helpful in the extraction and/or the concentration steps of sterols, tocopherols or carotenoids from complex samples.




Principle

Supercritical fluid is a substance that has both gaseous and liquid properties above the critical point. Supercritical fluids have the advantages of high diffusion coefficient, low viscosity, adjustable solubility and high vapor phase density, so they can provide efficient mass spectrometry ionization and separation results.
Supercritical fluid chromatography (SFC) is an efficient separation technique that uses supercritical fluid as a mobile phase. The samples are packed into short tubes or SPE columns, and the samples are compressed and regulated by supercritical fluid to obtain good solubility. The sample components are then separated by column interaction, thus achieving the separation of different compounds.

Applications

For efficient separation of substances
Widely used in biology, chemistry, environmental protection and other fields

Procedure

1. Sample injection
2. The high pressure pump increases the pressure of the sample and mobile phase
3. The sample and mobile phase enter the chromatographic column
4. Flow limiter assists sample separation

Materials

• Sample Type:
Non-saponifiable lipids

Notes

1. In the process of separation, the control of pressure and temperature of supercritical fluid is very important, which affects the properties and separation efficiency of supercritical fluid.
2. In addition, the selection of the appropriate column, packing and moving equivalent factors will also affect the separation effect.
Advertisement