Methods Of Extraction

Descripción

Mind Map of Lect.1&2 Methods of Extractions
Menna Fathy
Mapa Mental por Menna Fathy, actualizado hace más de 1 año
Menna Fathy
Creado por Menna Fathy hace más de 7 años
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Resumen del Recurso

Methods Of Extraction
  1. Mechanical
    1. No solvent Hydralic Pressure only
      1. F.O of Seeds
    2. Maceration
      1. Solvent + 3 days + RT
      2. Percolation
        1. Maceration + Continous Fresh solvent Flow
        2. Digestion
          1. Maceration + Gentle Heat
          2. Infusion
            1. Maceration short time
              1. Readily Soluble Cpds
            2. Decoction
              1. Boiling for 15'
                1. Thermostable Cpds
              2. 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
                2. 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
                  2. MAE
                    1. Microwaves --> Agitation + Heat Energy
                      1. If Pressure is Applied  inc. Penetration & Transport Between Solvent & P.M
                    2. PLE
                      1. Extraction with Liquid solvent under High Temp  Inc. Diffusion Rate & Solubility & High Pressure  Keep solvent Below B.P
                      2. 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 )
                        2. 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
                          2. 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
                            2. 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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