Methods Of Extraction

Mechanical
1. No solvent Hydralic Pressure only
  1. F.O of Seeds
Maceration
1. Solvent + 3 days + RT
Percolation
1. Maceration + Continous Fresh solvent Flow
Digestion
1. Maceration + Gentle Heat
Infusion
1. Maceration short time
  1. Readily Soluble Cpds
Decoction
1. Boiling for 15'
  1. Thermostable Cpds
Continous HOT extraction Using Soxhlet Extractor
1. P.M is repeatedly extracted with solvent & the dissolved const. are conc. In the extraction flask
  1. Thermostable Cpds & If Thermoliable use Low B.P solvent
UAE
1. Ultrasonic Energy + Pressure
  1. High Temp = Inc. Solubility & Diffusion of Const. in solvent
    1. The oxidative energy from radicals Created during the process  Inc. Extraction Power
      1. If Pressure is Applied  inc. Penetration & Transport Between Solvent & P.M
MAE
1. Microwaves --> Agitation + Heat Energy
  1. If Pressure is Applied  inc. Penetration & Transport Between Solvent & P.M
PLE
1. Extraction with Liquid solvent under High Temp  Inc. Diffusion Rate & Solubility & High Pressure  Keep solvent Below B.P
SFE
1. Carbondioxide Gas Under Critical Temp. = Gas--> Liquid
  1. Available & cheap Inert Non-toxic Non-inflammable Easy to eliminate Has low critical temp. ( 31o C at P= 74 bar )
SPE
1. Solid phase pre-packed in column = stationary phase + solvent
  1. to isolate / purify a sub or sample of interest from a more complex sample Eg: Before analysis of Biological samples
SPME
1. Analysis of some V.O containing drugs In GC & LC Analysis of Dilute samples in both gaseous & Liquid states Adsorptive phase : silicone Fibers
Distillation
1. Steam Distillation
  1. V.O
2. Thermo-Micro-Distillation
  1. For Analytical separation of Vol. const. Steam distillation on a semi – micro scale

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Methods Of Extraction

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	Erstellt von Menna Fathy vor etwa 8 Jahre