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Extraction of Plant Secondary Metabolites

Extraction of Plant Secondary Metabolites. Introduction. Selection, Collection, and Identification of Plant Material Drying and Grinding Extraction Percolation and Soxhlet Extraction Maceration Choice of Solvent Sample Preparation for Large-Scale Biological Screening

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Extraction of Plant Secondary Metabolites

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  1. Extraction of Plant Secondary Metabolites

  2. Introduction

  3. Selection, Collection, and Identification of Plant Material • Drying and Grinding • Extraction • Percolation and Soxhlet Extraction • Maceration • Choice of Solvent • Sample Preparation for Large-Scale Biological Screening • Preparation of Enriched Extracts (alkaloids, flavonoids, saponins)

  4. General procedure for preparing extracts representing a range of polarities, including a virtually tannin-free chloroform extract

  5. General fractionation procedure to obtain a precipitate of crude saponin from plants

  6. General procedure to obtain alkaloidal extracts from crude plant material

  7. Water extraction (decoction, infusion) • Extraction artefacts • Interfering compounds • Lipids • Plant pigments (carotenoids, chlorphyll) • Vegetable tannins • Platicizers

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