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Extraction: Advanced Methods

Extraction: Advanced Methods

Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is formed in...

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Sample preparation is an essential step in the analytical process. It involves preparing a sample so that it can be analyzed accurately. The goal is to extract the analyte, the substance you want to measure, from the sample while removing any components that may interfere with the analysis. Sample preparation techniques vary depending on the physical state of the sample.
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Bioavailability is a critical pharmacological concept that measures the extent and rate at which an active drug ingredient or therapeutic moiety enters the systemic circulation, remaining unchanged. It's a pivotal factor in determining a drug's efficacy and safety.The Biopharmaceutics Classification System (BCS) plays an essential role in drug development by categorizing drugs into four classes based on their solubility and permeability. This classification aids in understanding drug absorption...

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Employing Pressurized Hot Water Extraction PHWE to Explore Natural Products Chemistry in the Undergraduate Laboratory

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A Comprehensive Review on Advanced Extraction Techniques for Retrieving Bioactive Components from Natural Sources.

Yogesh A Bhadange¹, Jitendra Carpenter², Virendra Kumar Saharan¹

¹Department of Chemical Engineering, Malaviya National Institute of Technology, Jaipur 302017, India.

|July 29, 2024

Summary

This review explores advanced techniques for extracting bioactive components from natural sources. It details methods like supercritical-fluid extraction and green extraction, crucial for pharmaceuticals and food industries.

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Area of Science:

Natural Product Chemistry
Separation Science
Green Chemistry

Background:

Growing demand for natural and functional compounds in pharmaceuticals, food, and cosmetics.
Need for efficient extraction methods to maintain integrity and bioactivity of natural components.

Purpose of the Study:

To provide a comprehensive overview of advanced extraction techniques for bioactive components from natural sources.
To highlight the principles, advantages, limitations, and optimization parameters of various extraction methods.
To discuss emerging green and nanotechnology-based approaches for enhanced extraction efficiency and sustainability.

Main Methods:

Review of literature on advanced extraction techniques.
Detailed exploration of supercritical-fluid extraction, microwave-assisted extraction, ultrasound-assisted extraction, subcritical solvent extraction, and solid-phase microextraction.
Analysis of factors influencing extraction: solvent, time, temperature, and amplitude.

Main Results:

Comparison of different extraction techniques regarding efficiency, yield, and bioactivity.
Case studies demonstrating the application of techniques for specific compounds (phenolics, flavonoids, alkaloids, essential oils).
Evaluation of emerging green and nanotechnology-based methods for improved sustainability and efficiency.

Conclusions:

Advanced extraction techniques are vital for obtaining high-quality bioactive components from natural sources.
Optimization of parameters and exploration of novel methods are key to maximizing extraction yield and bioactivity.
This review serves as a valuable resource for researchers and industry professionals in natural product extraction.