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Supercritical fluid extractions in biotechnology.

T W Randolph1

  • 1Department of Chemical Engineering, Yale University, New Haven, CT 06520.

Trends in Biotechnology
|March 1, 1990
PubMed
Summary

Supercritical fluid (SCF) extraction offers a promising alternative to traditional methods for biological compound extraction. This technique is ideal for low-temperature processing, ensuring high purity and minimal solvent residue in final products.

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Area of Science:

  • Biotechnology and Chemical Engineering
  • Separation Science

Background:

  • Supercritical fluid (SCF) extraction is emerging as a viable alternative to conventional liquid-liquid extraction and distillation.
  • Current commercial SCF applications primarily focus on biologically produced materials.

Purpose of the Study:

  • To highlight the advantages of SCF extraction for biological compound isolation.
  • To explore the potential of SCFs in bioprocessing.

Main Methods:

  • Review of existing SCF extraction applications and advancements.
  • Analysis of SCF properties relevant to bioprocessing (low-temperature, high mass-transfer, negligible solvent carry-over).

Main Results:

  • SCF extraction is particularly suitable for biological compounds requiring low-temperature processing.
  • High mass-transfer rates and minimal solvent residue are key benefits.
  • Integration of SCF extraction with reaction or crystallization enhances its applicability.

Conclusions:

  • SCF extraction presents a compelling option for bioprocessing, offering efficiency and product purity.
  • Advancements in SCF technology are expanding its role in the bioprocessing industries.

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